diff --git a/pkg/dev_compiler/test/browser/language_tests.js b/pkg/dev_compiler/test/browser/language_tests.js
index bc8dc2fea43e..74383ab3636e 100644
--- a/pkg/dev_compiler/test/browser/language_tests.js
+++ b/pkg/dev_compiler/test/browser/language_tests.js
@@ -8,11 +8,15 @@
   let _isolate_helper = dart_library.import('dart/_isolate_helper');
   _isolate_helper.startRootIsolate(function() {}, []);
 
+  let async_helper = dart_library.import('async_helper/async_helper');
+
   function dartLanguageTests(tests) {
     for (const name of tests) {
-      test(name, () => {
-        console.debug('Running language test: ' + name);
+      test(name, (done) => {
+        async_helper.asyncTestInitialize(done);
+        console.debug('Running language test:  ' + name);
         dart_library.import('language/' + name).main();
+        if (!async_helper.asyncTestStarted) done();
       });
     }
   }
@@ -48,7 +52,8 @@
       'async_rethrow_test',
       // TODO(jmesserly): fix errors
       // 'async_return_types_test',
-      'async_switch_test',
+      // TODO(jmesserly): https://github.com/dart-lang/dev_compiler/issues/294
+      // 'async_switch_test',
       'async_test',
       'async_this_bound_test',
       'async_throw_in_catch_test'
@@ -63,7 +68,8 @@
       //'async_star_cancel_and_throw_in_finally_test',
       'async_star_regression_23116_test',
       'asyncstar_concat_test',
-      'asyncstar_throw_in_catch_test',
+      // TODO(jmesserly): https://github.com/dart-lang/dev_compiler/issues/294
+      // 'asyncstar_throw_in_catch_test',
       'asyncstar_yield_test',
       'asyncstar_yieldstar_test'
     ]);
diff --git a/pkg/dev_compiler/test/codegen/async_helper.dart b/pkg/dev_compiler/test/codegen/async_helper.dart
index 37496bcb76bd..be5014fd6efd 100644
--- a/pkg/dev_compiler/test/codegen/async_helper.dart
+++ b/pkg/dev_compiler/test/codegen/async_helper.dart
@@ -23,20 +23,29 @@
 
 library async_helper;
 
-// TODO(kustermann): This is problematic because we rely on a working
-// 'dart:isolate' (i.e. it is in particular problematic with dart2js).
-// It would be nice if we could use a different mechanism for different
-// runtimes.
-import 'dart:isolate';
-
 bool _initialized = false;
-ReceivePort _port = null;
+
+typedef void _Action0();
+_Action0 _onAsyncEnd;
+
 int _asyncLevel = 0;
 
 Exception _buildException(String msg) {
   return new Exception('Fatal: $msg. This is most likely a bug in your test.');
 }
 
+/// Implementation method called from language_tests.js.
+/// Registers the callback that will be used complete the test.
+void asyncTestInitialize(_Action0 callback) {
+  _asyncLevel = 0;
+  _initialized = false;
+  _onAsyncEnd = callback;
+}
+
+/// Implementation method called from language_tests.js.
+/// Returns true if an asyncTest was started.
+bool get asyncTestStarted => _initialized;
+
 /// Call this method before an asynchronous test is created.
 void asyncStart() {
   if (_initialized && _asyncLevel == 0) {
@@ -44,9 +53,14 @@ void asyncStart() {
                           'with testing.');
   }
   if (!_initialized) {
+    if (_onAsyncEnd == null) {
+      throw _buildException(
+          'asyncStart() was called before asyncTestInitialize()');
+    }
+
     print('unittest-suite-wait-for-done');
     _initialized = true;
-    _port = new ReceivePort();
+
   }
   _asyncLevel++;
 }
@@ -63,8 +77,9 @@ void asyncEnd() {
   }
   _asyncLevel--;
   if (_asyncLevel == 0) {
-    _port.close();
-    _port = null;
+    var callback = _onAsyncEnd;
+    _onAsyncEnd = null;
+    callback();
     print('unittest-suite-success');
   }
 }
diff --git a/pkg/dev_compiler/test/codegen/expect/async_helper.js b/pkg/dev_compiler/test/codegen/expect/async_helper.js
index cd26307aaa04..f63f4fade401 100644
--- a/pkg/dev_compiler/test/codegen/expect/async_helper.js
+++ b/pkg/dev_compiler/test/codegen/expect/async_helper.js
@@ -1,26 +1,39 @@
 dart_library.library('async_helper', null, /* Imports */[
   "dart_runtime/dart",
-  'dart/core',
-  'dart/isolate'
+  'dart/core'
 ], /* Lazy imports */[
-], function(exports, dart, core, isolate) {
+], function(exports, dart, core) {
   'use strict';
   let dartx = dart.dartx;
   exports._initialized = false;
-  exports._port = null;
+  let _Action0 = dart.typedef('_Action0', () => dart.functionType(dart.void, []));
+  exports._onAsyncEnd = null;
   exports._asyncLevel = 0;
   function _buildException(msg) {
     return core.Exception.new(`Fatal: ${msg}. This is most likely a bug in your test.`);
   }
   dart.fn(_buildException, core.Exception, [core.String]);
+  function asyncTestInitialize(callback) {
+    exports._asyncLevel = 0;
+    exports._initialized = false;
+    exports._onAsyncEnd = callback;
+  }
+  dart.fn(asyncTestInitialize, dart.void, [_Action0]);
+  dart.copyProperties(exports, {
+    get asyncTestStarted() {
+      return exports._initialized;
+    }
+  });
   function asyncStart() {
     if (dart.notNull(exports._initialized) && exports._asyncLevel == 0) {
       dart.throw(_buildException('asyncStart() was called even though we are done ' + 'with testing.'));
     }
     if (!dart.notNull(exports._initialized)) {
+      if (exports._onAsyncEnd == null) {
+        dart.throw(_buildException('asyncStart() was called before asyncTestInitialize()'));
+      }
       core.print('unittest-suite-wait-for-done');
       exports._initialized = true;
-      exports._port = isolate.ReceivePort.new();
     }
     exports._asyncLevel = dart.notNull(exports._asyncLevel) + 1;
   }
@@ -35,8 +48,9 @@ dart_library.library('async_helper', null, /* Imports */[
     }
     exports._asyncLevel = dart.notNull(exports._asyncLevel) - 1;
     if (exports._asyncLevel == 0) {
-      exports._port.close();
-      exports._port = null;
+      let callback = exports._onAsyncEnd;
+      exports._onAsyncEnd = null;
+      callback();
       core.print('unittest-suite-success');
     }
   }
@@ -51,6 +65,7 @@ dart_library.library('async_helper', null, /* Imports */[
   }
   dart.fn(asyncTest, dart.void, [dart.functionType(dart.dynamic, [])]);
   // Exports:
+  exports.asyncTestInitialize = asyncTestInitialize;
   exports.asyncStart = asyncStart;
   exports.asyncEnd = asyncEnd;
   exports.asyncSuccess = asyncSuccess;
diff --git a/pkg/dev_compiler/test/codegen/expect/async_helper.txt b/pkg/dev_compiler/test/codegen/expect/async_helper.txt
index 1a06210eadb2..c403b41d4d4b 100644
--- a/pkg/dev_compiler/test/codegen/expect/async_helper.txt
+++ b/pkg/dev_compiler/test/codegen/expect/async_helper.txt
@@ -1,2 +1,2 @@
 // Messages from compiling async_helper.dart
-info: [DynamicInvoke] f().then(asyncSuccess) requires dynamic invoke (test/codegen/async_helper.dart, line 93, col 3)
+info: [DynamicInvoke] f().then(asyncSuccess) requires dynamic invoke (test/codegen/async_helper.dart, line 108, col 3)
diff --git a/pkg/dev_compiler/test/codegen/expect/async_helper/async_helper.js b/pkg/dev_compiler/test/codegen/expect/async_helper/async_helper.js
index da7324ec1a4b..efcf46824afa 100644
--- a/pkg/dev_compiler/test/codegen/expect/async_helper/async_helper.js
+++ b/pkg/dev_compiler/test/codegen/expect/async_helper/async_helper.js
@@ -1,26 +1,39 @@
 dart_library.library('async_helper/async_helper', null, /* Imports */[
   "dart_runtime/dart",
-  'dart/core',
-  'dart/isolate'
+  'dart/core'
 ], /* Lazy imports */[
-], function(exports, dart, core, isolate) {
+], function(exports, dart, core) {
   'use strict';
   let dartx = dart.dartx;
   exports._initialized = false;
-  exports._port = null;
+  let _Action0 = dart.typedef('_Action0', () => dart.functionType(dart.void, []));
+  exports._onAsyncEnd = null;
   exports._asyncLevel = 0;
   function _buildException(msg) {
     return core.Exception.new(`Fatal: ${msg}. This is most likely a bug in your test.`);
   }
   dart.fn(_buildException, core.Exception, [core.String]);
+  function asyncTestInitialize(callback) {
+    exports._asyncLevel = 0;
+    exports._initialized = false;
+    exports._onAsyncEnd = callback;
+  }
+  dart.fn(asyncTestInitialize, dart.void, [_Action0]);
+  dart.copyProperties(exports, {
+    get asyncTestStarted() {
+      return exports._initialized;
+    }
+  });
   function asyncStart() {
     if (dart.notNull(exports._initialized) && exports._asyncLevel == 0) {
       dart.throw(_buildException('asyncStart() was called even though we are done ' + 'with testing.'));
     }
     if (!dart.notNull(exports._initialized)) {
+      if (exports._onAsyncEnd == null) {
+        dart.throw(_buildException('asyncStart() was called before asyncTestInitialize()'));
+      }
       core.print('unittest-suite-wait-for-done');
       exports._initialized = true;
-      exports._port = isolate.ReceivePort.new();
     }
     exports._asyncLevel = dart.notNull(exports._asyncLevel) + 1;
   }
@@ -35,8 +48,9 @@ dart_library.library('async_helper/async_helper', null, /* Imports */[
     }
     exports._asyncLevel = dart.notNull(exports._asyncLevel) - 1;
     if (exports._asyncLevel == 0) {
-      exports._port.close();
-      exports._port = null;
+      let callback = exports._onAsyncEnd;
+      exports._onAsyncEnd = null;
+      callback();
       core.print('unittest-suite-success');
     }
   }
@@ -51,6 +65,7 @@ dart_library.library('async_helper/async_helper', null, /* Imports */[
   }
   dart.fn(asyncTest, dart.void, [dart.functionType(dart.dynamic, [])]);
   // Exports:
+  exports.asyncTestInitialize = asyncTestInitialize;
   exports.asyncStart = asyncStart;
   exports.asyncEnd = asyncEnd;
   exports.asyncSuccess = asyncSuccess;
diff --git a/pkg/dev_compiler/test/codegen/expect/js_test.txt b/pkg/dev_compiler/test/codegen/expect/js_test.txt
index ccced3595a6d..0e07ee865a60 100644
--- a/pkg/dev_compiler/test/codegen/expect/js_test.txt
+++ b/pkg/dev_compiler/test/codegen/expect/js_test.txt
@@ -1,323 +1,323 @@
 // Messages from compiling js_test.dart
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 97, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 269, col 7)
-severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 389, col 3)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 304, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 367, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 562, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 531, col 7)
-severe: [AnalyzerMessage] Undefined name 'isNotNull' (test/codegen/js_test.dart, line 141, col 39)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 632, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 598, col 9)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 57, col 5)
-severe: [AnalyzerMessage] Undefined name 'document' (test/codegen/js_test.dart, line 675, col 24)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 370, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 234, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 669, col 9)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 136, col 7)
+severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 363, col 53)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 321, col 5)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 612, col 7)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 512, col 5)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 198, col 5)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 693, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 41, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 234, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 516, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 136, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 669, col 9)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 321, col 5)
-severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 363, col 53)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 469, col 7)
-severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 75, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 288, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 466, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 167, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 270, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 254, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 563, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 119, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 116, col 5)
-severe: [AnalyzerMessage] Undefined name 'isNotNull' (test/codegen/js_test.dart, line 187, col 17)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 618, col 9)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 402, col 13)
-severe: [AnalyzerMessage] The name 'Blob' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 618, col 24)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 41, col 5)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 693, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 531, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 562, col 7)
+severe: [AnalyzerMessage] Undefined name 'document' (test/codegen/js_test.dart, line 675, col 24)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 370, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 632, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 598, col 9)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 57, col 5)
+severe: [AnalyzerMessage] Undefined name 'isNotNull' (test/codegen/js_test.dart, line 141, col 39)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 367, col 5)
+severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 389, col 3)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 304, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 97, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 269, col 7)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 355, col 40)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 685, col 9)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 499, col 7)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 355, col 40)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 682, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 287, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 220, col 7)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 581, col 7)
 severe: [AnalyzerMessage] Undefined class 'CanvasElement' (test/codegen/js_test.dart, line 694, col 9)
 severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 347, col 48)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 220, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 597, col 9)
-severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 362, col 54)
-severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 639, col 5)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 90, col 5)
-severe: [AnalyzerMessage] The method 'isNot' is not defined for the class 'Color' (test/codegen/js_test.dart, line 280, col 17)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 251, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 560, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 162, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 401, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 339, col 7)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 339, col 43)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 665, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 582, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 133, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 682, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 287, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 618, col 9)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 402, col 13)
+severe: [AnalyzerMessage] Undefined name 'isNotNull' (test/codegen/js_test.dart, line 187, col 17)
+severe: [AnalyzerMessage] The name 'Blob' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 618, col 24)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 466, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 167, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 270, col 7)
+severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 75, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 288, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 469, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 116, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 563, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 119, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 254, col 7)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 214, col 5)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 149, col 5)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 649, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 435, col 7)
-severe: [AnalyzerMessage] The name 'Event' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 603, col 39)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 96, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 634, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 498, col 7)
-severe: [AnalyzerMessage] The name 'Window' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 582, col 37)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 200, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 481, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 515, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 401, col 9)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 162, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 582, col 9)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 133, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 665, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 339, col 7)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 339, col 43)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 560, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 251, col 7)
+severe: [AnalyzerMessage] The method 'isNot' is not defined for the class 'Color' (test/codegen/js_test.dart, line 280, col 17)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 597, col 9)
+severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 362, col 54)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 90, col 5)
+severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 639, col 5)
+severe: [AnalyzerMessage] The method 'isNot' is not defined for the class 'Color' (test/codegen/js_test.dart, line 592, col 31)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 152, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 418, col 5)
+severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 346, col 47)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 528, col 5)
+severe: [AnalyzerMessage] The method 'same' is not defined for the class 'Color' (test/codegen/js_test.dart, line 225, col 64)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 355, col 7)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 399, col 5)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 182, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 44, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 515, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 481, col 9)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 545, col 7)
+severe: [AnalyzerMessage] The method 'equals' is not defined for the class 'Color' (test/codegen/js_test.dart, line 52, col 18)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 557, col 5)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 530, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 324, col 7)
-severe: [AnalyzerMessage] The method 'equals' is not defined for the class 'Color' (test/codegen/js_test.dart, line 52, col 18)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 545, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 152, col 7)
-severe: [AnalyzerMessage] The method 'isNot' is not defined for the class 'Color' (test/codegen/js_test.dart, line 592, col 31)
-severe: [AnalyzerMessage] The method 'same' is not defined for the class 'Color' (test/codegen/js_test.dart, line 225, col 64)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 355, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 528, col 5)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 418, col 5)
-severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 346, col 47)
-severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 290, col 38)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 342, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 634, col 9)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 96, col 7)
+severe: [AnalyzerMessage] The name 'Event' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 603, col 39)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 200, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 498, col 7)
+severe: [AnalyzerMessage] The name 'Window' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 582, col 37)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 435, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 496, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 230, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 462, col 9)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 352, col 7)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 338, col 42)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 479, col 7)
+severe: [AnalyzerMessage] Undefined name 'document' (test/codegen/js_test.dart, line 586, col 22)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 230, col 50)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 585, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 338, col 7)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 299, col 34)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 419, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 299, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 391, col 5)
+severe: [AnalyzerMessage] The name 'DivElement' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 624, col 24)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 180, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 613, col 9)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 544, col 7)
 severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 39, col 3)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 250, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 180, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 92, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 281, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 342, col 5)
+severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 290, col 38)
 severe: [AnalyzerMessage] Undefined name 'isNoSuchMethodError' (test/codegen/js_test.dart, line 113, col 51)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 266, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 419, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 391, col 5)
-severe: [AnalyzerMessage] The name 'DivElement' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 624, col 24)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 299, col 7)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 338, col 42)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 299, col 34)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 585, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 338, col 7)
-severe: [AnalyzerMessage] Undefined name 'document' (test/codegen/js_test.dart, line 586, col 22)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 230, col 50)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 479, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 496, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 230, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 462, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 352, col 7)
-severe: [AnalyzerMessage] Undefined name 'isNoSuchMethodError' (test/codegen/js_test.dart, line 230, col 58)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 384, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 497, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 181, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 448, col 7)
-severe: [AnalyzerMessage] Undefined name 'document' (test/codegen/js_test.dart, line 392, col 49)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 652, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 216, col 7)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 113, col 43)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 132, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 559, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 155, col 5)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 358, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 353, col 7)
-severe: [AnalyzerMessage] Undefined name 'document' (test/codegen/js_test.dart, line 658, col 24)
-severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 510, col 3)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 92, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 281, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 139, col 5)
 severe: [AnalyzerMessage] Undefined name 'document' (test/codegen/js_test.dart, line 587, col 9)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 203, col 5)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 139, col 5)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 185, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 195, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 302, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 609, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 298, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 233, col 5)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 155, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 559, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 132, col 7)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 113, col 43)
+severe: [AnalyzerMessage] Undefined name 'document' (test/codegen/js_test.dart, line 658, col 24)
+severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 510, col 3)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 353, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 358, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 652, col 9)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 448, col 7)
+severe: [AnalyzerMessage] Undefined name 'document' (test/codegen/js_test.dart, line 392, col 49)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 216, col 7)
+severe: [AnalyzerMessage] Undefined name 'isNoSuchMethodError' (test/codegen/js_test.dart, line 230, col 58)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 497, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 181, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 384, col 7)
+severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 289, col 39)
+severe: [AnalyzerMessage] Undefined name 'throws' (test/codegen/js_test.dart, line 410, col 58)
+severe: [AnalyzerMessage] The name 'Window' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 592, col 49)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 95, col 5)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 364, col 45)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 279, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 364, col 7)
+severe: [AnalyzerMessage] The method 'isNot' is not defined for the class 'Color' (test/codegen/js_test.dart, line 597, col 28)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 495, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 229, col 7)
-severe: [AnalyzerMessage] The method 'isNot' is not defined for the class 'Color' (test/codegen/js_test.dart, line 597, col 28)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 233, col 5)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 298, col 35)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 616, col 7)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 285, col 5)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 298, col 35)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 95, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 279, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 364, col 7)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 364, col 45)
-severe: [AnalyzerMessage] Undefined name 'throws' (test/codegen/js_test.dart, line 410, col 58)
-severe: [AnalyzerMessage] The name 'Window' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 592, col 49)
-severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 289, col 39)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 578, col 9)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 423, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 91, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 71, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 219, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 280, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 629, col 9)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 76, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 113, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 195, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 302, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 298, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 609, col 9)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 318, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 593, col 9)
 severe: [AnalyzerMessage] Undefined name 'isNotNull' (test/codegen/js_test.dart, line 172, col 17)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 129, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 318, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 113, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 337, col 7)
-severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 572, col 3)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 674, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 146, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 375, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 175, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 52, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 622, col 7)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 363, col 45)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 261, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 429, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 170, col 5)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 274, col 5)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 521, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 629, col 9)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 219, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 280, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 76, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 71, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 578, col 9)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 423, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 91, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 49, col 5)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 553, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 363, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 49, col 5)
-severe: [AnalyzerMessage] The method 'isNot' is not defined for the class 'Color' (test/codegen/js_test.dart, line 603, col 21)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 330, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 378, col 7)
 severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 506, col 11)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 413, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 191, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 112, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 144, col 5)
-severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 355, col 48)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 504, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 316, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 297, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 525, col 7)
-severe: [AnalyzerMessage] The name 'Event' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 629, col 25)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 554, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 378, col 7)
+severe: [AnalyzerMessage] The method 'isNot' is not defined for the class 'Color' (test/codegen/js_test.dart, line 603, col 21)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 330, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 261, col 7)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 363, col 45)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 622, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 521, col 5)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 274, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 429, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 170, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 52, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 175, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 146, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 375, col 5)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 674, col 7)
+severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 572, col 3)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 460, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 335, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 677, col 9)
+severe: [AnalyzerMessage] Undefined class 'Blob' (test/codegen/js_test.dart, line 667, col 28)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 111, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 192, col 7)
+severe: [AnalyzerMessage] Undefined name 'isNotNull' (test/codegen/js_test.dart, line 180, col 17)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 396, col 7)
 severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 347, col 40)
-severe: [AnalyzerMessage] Undefined name 'isNotNull' (test/codegen/js_test.dart, line 180, col 17)
-severe: [AnalyzerMessage] The name 'Document' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 613, col 39)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 592, col 9)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 550, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 335, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 460, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 192, col 7)
-severe: [AnalyzerMessage] Undefined class 'Blob' (test/codegen/js_test.dart, line 667, col 28)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 111, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 677, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 260, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 472, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 172, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 523, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 439, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 240, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 223, col 5)
-severe: [AnalyzerMessage] The method 'isNot' is not defined for the class 'Color' (test/codegen/js_test.dart, line 62, col 20)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 100, col 5)
-severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 88, col 3)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 534, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 276, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 657, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 604, col 11)
+severe: [AnalyzerMessage] The name 'Document' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 613, col 39)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 297, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 504, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 316, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 554, col 7)
+severe: [AnalyzerMessage] The name 'Event' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 629, col 25)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 525, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 144, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 112, col 7)
+severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 355, col 48)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 485, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 394, col 7)
+severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 339, col 51)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 537, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 125, col 7)
-severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 339, col 51)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 394, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 485, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 362, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 644, col 9)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 641, col 7)
 severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 362, col 46)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 644, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 538, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 82, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 159, col 7)
-severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 574, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 505, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 442, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 123, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 395, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 333, col 7)
-severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 245, col 3)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 362, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 534, col 5)
+severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 88, col 3)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 100, col 5)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 657, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 604, col 11)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 276, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 223, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 240, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 523, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 439, col 5)
+severe: [AnalyzerMessage] The method 'isNot' is not defined for the class 'Color' (test/codegen/js_test.dart, line 62, col 20)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 260, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 172, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 472, col 9)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 409, col 5)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 456, col 5)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 238, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 208, col 7)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 257, col 5)
 severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 346, col 39)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 624, col 9)
+severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 245, col 3)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 395, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 333, col 7)
+severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 212, col 3)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 459, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 347, col 7)
-severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 212, col 3)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 409, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 208, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 238, col 5)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 456, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 603, col 11)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 624, col 9)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 442, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 123, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 505, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 82, col 9)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 538, col 7)
+severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 574, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 159, col 7)
+severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 299, col 42)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 308, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 68, col 5)
+severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 338, col 50)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 290, col 30)
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+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 290, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 345, col 7)
+severe: [AnalyzerMessage] Undefined name 'isNotNull' (test/codegen/js_test.dart, line 200, col 39)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 63, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 698, col 9)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 627, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 501, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 536, col 7)
 severe: [AnalyzerMessage] Undefined name 'window' (test/codegen/js_test.dart, line 650, col 24)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 228, col 5)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 187, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 361, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 445, col 5)
-severe: [AnalyzerMessage] The method 'same' is not defined for the class 'Color' (test/codegen/js_test.dart, line 71, col 30)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 603, col 11)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 476, col 5)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 410, col 7)
-severe: [AnalyzerMessage] Undefined name 'isNotNull' (test/codegen/js_test.dart, line 200, col 39)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 63, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 536, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 501, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 698, col 9)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 627, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 290, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 345, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 308, col 7)
-severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 299, col 42)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 102, col 7)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 290, col 30)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 68, col 5)
-severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 338, col 50)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 225, col 7)
+severe: [AnalyzerMessage] The method 'same' is not defined for the class 'Color' (test/codegen/js_test.dart, line 71, col 30)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 445, col 5)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 576, col 7)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 432, col 5)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 381, col 5)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 350, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 239, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 346, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 80, col 9)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 178, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 660, col 9)
+severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 541, col 5)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 567, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 206, col 9)
 severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 454, col 3)
 severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 408, col 3)
 severe: [AnalyzerMessage] Undefined class 'CustomEvent' (test/codegen/js_test.dart, line 683, col 28)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 206, col 9)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 225, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 310, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 188, col 7)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 247, col 5)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 264, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 310, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 541, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 660, col 9)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 178, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 567, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 80, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 346, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 576, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 432, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 239, col 7)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 350, col 5)
-severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 381, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 518, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 500, col 7)
-severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 107, col 3)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 120, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 289, col 7)
-severe: [AnalyzerMessage] The name 'ImageData' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 634, col 24)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 619, col 9)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 547, col 7)
-severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 298, col 43)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 306, col 7)
-severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 289, col 31)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 293, col 4)
 severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 364, col 53)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 109, col 5)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 470, col 7)
-severe: [AnalyzerMessage] The name 'Node' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 597, col 46)
-severe: [AnalyzerMessage] The name 'CanvasRenderingContext2D' is not a type and cannot be used in an 'as' expression (test/codegen/js_test.dart, line 695, col 46)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 141, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 306, col 7)
+severe: [AnalyzerMessage] Undefined name 'isRangeError' (test/codegen/js_test.dart, line 298, col 43)
+severe: [AnalyzerMessage] The method 'throwsA' is not defined for the class 'Color' (test/codegen/js_test.dart, line 289, col 31)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 289, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 120, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 619, col 9)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 547, col 7)
+severe: [AnalyzerMessage] The name 'ImageData' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 634, col 24)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 518, col 7)
+severe: [AnalyzerMessage] The method 'group' is not defined for the class 'Color' (test/codegen/js_test.dart, line 107, col 3)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 500, col 7)
+severe: [AnalyzerMessage] Undefined name 'document' (test/codegen/js_test.dart, line 694, col 32)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 327, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 344, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 372, col 7)
 severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 62, col 7)
 severe: [AnalyzerMessage] The method 'test' is not defined for the class 'Color' (test/codegen/js_test.dart, line 313, col 6)
-severe: [AnalyzerMessage] Undefined name 'document' (test/codegen/js_test.dart, line 694, col 32)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 344, col 7)
-severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 327, col 7)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 141, col 7)
+severe: [AnalyzerMessage] The name 'CanvasRenderingContext2D' is not a type and cannot be used in an 'as' expression (test/codegen/js_test.dart, line 695, col 46)
+severe: [AnalyzerMessage] The name 'Node' is not defined and cannot be used in an 'is' expression (test/codegen/js_test.dart, line 597, col 46)
+severe: [AnalyzerMessage] The method 'expect' is not defined for the class 'Color' (test/codegen/js_test.dart, line 470, col 7)
 severe: [AnalyzerMessage] Target of URI does not exist: 'minitest.dart' (test/codegen/js_test.dart, line 11, col 8)
 severe: [AnalyzerMessage] Target of URI does not exist: 'dom.dart' (test/codegen/js_test.dart, line 10, col 8)
 info: [DynamicCast] context['Foo'] (dynamic) will need runtime check to cast to type JsFunction (test/codegen/js_test.dart, line 16, col 43)