format code with Prettier

.eslintrc.yml

@@ -1,5 +1,7 @@
 root: true
-extends: semistandard
+extends:
+  - semistandard
+  - plugin:prettier/recommended
 env:
   node: yes
   browser: yes

bin/_mocha

@@ -58,7 +58,7 @@ const exit = code => {
   // https://github.com/joyent/node/issues/6247 is just one bug example
   // https://github.com/visionmedia/mocha/issues/333 has a good discussion
   const done = () => {
-    if (!(draining--)) {
+    if (!draining--) {
       process.exit(clampedCode);
     }
   };
@@ -150,9 +150,16 @@ const images = {
 // options
 
 program
-  .version(JSON.parse(fs.readFileSync(path.join(__dirname, '..', 'package.json'), 'utf8')).version)
+  .version(
+    JSON.parse(
+      fs.readFileSync(path.join(__dirname, '..', 'package.json'), 'utf8')
+    ).version
+  )
   .usage('[debug] [options] [files]')
-  .option('-A, --async-only', 'force all tests to take a callback (async) or return a promise')
+  .option(
+    '-A, --async-only',
+    'force all tests to take a callback (async) or return a promise'
+  )
   .option('-c, --colors', 'force enabling of colors')
   .option('-C, --no-colors', 'force disabling of colors')
   .option('-G, --growl', 'enable growl notification support')
@@ -168,24 +175,53 @@ program
   .option('-r, --require <name>', 'require the given module')
   .option('-s, --slow <ms>', '"slow" test threshold in milliseconds [75]')
   .option('-t, --timeout <ms>', 'set test-case timeout in milliseconds [2000]')
-  .option('-u, --ui <name>', `specify user-interface (${interfaceNames.join('|')})`, 'bdd')
+  .option(
+    '-u, --ui <name>',
+    `specify user-interface (${interfaceNames.join('|')})`,
+    'bdd'
+  )
   .option('-w, --watch', 'watch files for changes')
   .option('--check-leaks', 'check for global variable leaks')
   .option('--full-trace', 'display the full stack trace')
-  .option('--compilers <ext>:<module>,...', 'use the given module(s) to compile files', list, [])
+  .option(
+    '--compilers <ext>:<module>,...',
+    'use the given module(s) to compile files',
+    list,
+    []
+  )
   .option('--debug-brk', "enable node's debugger breaking on the first line")
-  .option('--globals <names>', 'allow the given comma-delimited global [names]', list, [])
+  .option(
+    '--globals <names>',
+    'allow the given comma-delimited global [names]',
+    list,
+    []
+  )
   .option('--es_staging', 'enable all staged features')
-  .option('--harmony<_classes,_generators,...>', 'all node --harmony* flags are available')
-  .option('--preserve-symlinks', 'Instructs the module loader to preserve symbolic links when resolving and caching modules')
+  .option(
+    '--harmony<_classes,_generators,...>',
+    'all node --harmony* flags are available'
+  )
+  .option(
+    '--preserve-symlinks',
+    'Instructs the module loader to preserve symbolic links when resolving and caching modules'
+  )
   .option('--icu-data-dir', 'include ICU data')
-  .option('--inline-diffs', 'display actual/expected differences inline within each string')
+  .option(
+    '--inline-diffs',
+    'display actual/expected differences inline within each string'
+  )
   .option('--no-diff', 'do not show a diff on failure')
   .option('--inspect', 'activate devtools in chrome')
-  .option('--inspect-brk', 'activate devtools in chrome and break on the first line')
+  .option(
+    '--inspect-brk',
+    'activate devtools in chrome and break on the first line'
+  )
   .option('--interfaces', 'display available interfaces')
   .option('--no-deprecation', 'silence deprecation warnings')
-  .option('--exit', 'force shutdown of the event loop after test run: mocha will call process.exit')
+  .option(
+    '--exit',
+    'force shutdown of the event loop after test run: mocha will call process.exit'
+  )
   .option('--no-timeouts', 'disables timeouts, given implicitly with --debug')
   .option('--no-warnings', 'silence all node process warnings')
   .option('--opts <path>', 'specify opts path', 'test/mocha.opts')
@@ -195,18 +231,37 @@ program
   .option('--log-timer-events', 'Time events including external callbacks')
   .option('--recursive', 'include sub directories')
   .option('--reporters', 'display available reporters')
-  .option('--retries <times>', 'set numbers of time to retry a failed test case')
-  .option('--throw-deprecation', 'throw an exception anytime a deprecated function is used')
+  .option(
+    '--retries <times>',
+    'set numbers of time to retry a failed test case'
+  )
+  .option(
+    '--throw-deprecation',
+    'throw an exception anytime a deprecated function is used'
+  )
   .option('--trace', 'trace function calls')
   .option('--trace-deprecation', 'show stack traces on deprecations')
   .option('--trace-warnings', 'show stack traces on node process warnings')
   .option('--use_strict', 'enforce strict mode')
-  .option('--watch-extensions <ext>,...', 'specify extensions to monitor with --watch', list, [])
+  .option(
+    '--watch-extensions <ext>,...',
+    'specify extensions to monitor with --watch',
+    list,
+    []
+  )
   .option('--delay', 'wait for async suite definition')
   .option('--allow-uncaught', 'enable uncaught errors to propagate')
   .option('--forbid-only', 'causes test marked with only to fail the suite')
-  .option('--forbid-pending', 'causes pending tests and test marked with skip to fail the suite')
-  .option('--file <file>', 'include a file to be ran during the suite', collect, [])
+  .option(
+    '--forbid-pending',
+    'causes pending tests and test marked with skip to fail the suite'
+  )
+  .option(
+    '--file <file>',
+    'include a file to be ran during the suite',
+    collect,
+    []
+  )
   .option('--exclude <file>', 'a file or glob pattern to ignore', collect, []);
 
 program._name = 'mocha';
@@ -447,7 +502,7 @@ if (program.forbidPending) mocha.forbidPending();
 
 if (program.compilers.length > 0) {
   require('util').deprecate(() => {},
-    '"--compilers" will be removed in a future version of Mocha; see https://git.io/vdcSr for more info')();
+  '"--compilers" will be removed in a future version of Mocha; see https://git.io/vdcSr for more info')();
 }
 const extensions = ['js'];
 program.compilers.forEach(c => {
@@ -489,7 +544,9 @@ args.forEach(arg => {
     newFiles = utils.lookupFiles(arg, extensions, program.recursive);
   } catch (err) {
     if (err.message.indexOf('cannot resolve path') === 0) {
-      console.error(`Warning: Could not find any test files matching pattern: ${arg}`);
+      console.error(
+        `Warning: Could not find any test files matching pattern: ${arg}`
+      );
       return;
     }
 
@@ -500,7 +557,9 @@ args.forEach(arg => {
     if (typeof newFiles === 'string') {
       newFiles = [newFiles];
     }
-    newFiles = newFiles.filter(fileName => program.exclude.every(pattern => !minimatch(fileName, pattern)));
+    newFiles = newFiles.filter(fileName =>
+      program.exclude.every(pattern => !minimatch(fileName, pattern))
+    );
   }
 
   files = files.concat(newFiles);
@@ -585,7 +644,7 @@ if (program.watch) {
     }
   });
 } else {
-// load
+  // load
 
   mocha.files = files;
   runner = mocha.run(program.exit ? exit : exitLater);

bin/options.js

@@ -16,17 +16,22 @@ module.exports = getOptions;
  * Get options.
  */
 
-function getOptions () {
-  if (process.argv.length === 3 && (process.argv[2] === '-h' || process.argv[2] === '--help')) {
+function getOptions() {
+  if (
+    process.argv.length === 3 &&
+    (process.argv[2] === '-h' || process.argv[2] === '--help')
+  ) {
     return;
   }
 
-  const optsPath = process.argv.indexOf('--opts') === -1
-    ? 'test/mocha.opts'
-    : process.argv[process.argv.indexOf('--opts') + 1];
+  const optsPath =
+    process.argv.indexOf('--opts') === -1
+      ? 'test/mocha.opts'
+      : process.argv[process.argv.indexOf('--opts') + 1];
 
   try {
-    const opts = fs.readFileSync(optsPath, 'utf8')
+    const opts = fs
+      .readFileSync(optsPath, 'utf8')
       .replace(/\\\s/g, '%20')
       .split(/\s/)
       .filter(Boolean)

browser-entry.js

@@ -17,7 +17,7 @@ var Mocha = require('./lib/mocha');
  * @return {undefined}
  */
 
-var mocha = new Mocha({ reporter: 'html' });
+var mocha = new Mocha({reporter: 'html'});
 
 /**
  * Save timer references to avoid Sinon interfering (see GH-237).
@@ -38,12 +38,12 @@ var originalOnerrorHandler = global.onerror;
  * Revert to original onerror handler if previously defined.
  */
 
-process.removeListener = function (e, fn) {
+process.removeListener = function(e, fn) {
   if (e === 'uncaughtException') {
     if (originalOnerrorHandler) {
       global.onerror = originalOnerrorHandler;
     } else {
-      global.onerror = function () {};
+      global.onerror = function() {};
     }
     var i = uncaughtExceptionHandlers.indexOf(fn);
     if (i !== -1) {
@@ -56,9 +56,9 @@ process.removeListener = function (e, fn) {
  * Implements uncaughtException listener.
  */
 
-process.on = function (e, fn) {
+process.on = function(e, fn) {
   if (e === 'uncaughtException') {
-    global.onerror = function (err, url, line) {
+    global.onerror = function(err, url, line) {
       fn(new Error(err + ' (' + url + ':' + line + ')'));
       return !mocha.allowUncaught;
     };
@@ -74,9 +74,9 @@ mocha.suite.removeAllListeners('pre-require');
 var immediateQueue = [];
 var immediateTimeout;
 
-function timeslice () {
+function timeslice() {
   var immediateStart = new Date().getTime();
-  while (immediateQueue.length && (new Date().getTime() - immediateStart) < 100) {
+  while (immediateQueue.length && new Date().getTime() - immediateStart < 100) {
     immediateQueue.shift()();
   }
   if (immediateQueue.length) {
@@ -90,7 +90,7 @@ function timeslice () {
  * High-performance override of Runner.immediately.
  */
 
-Mocha.Runner.immediately = function (callback) {
+Mocha.Runner.immediately = function(callback) {
   immediateQueue.push(callback);
   if (!immediateTimeout) {
     immediateTimeout = setTimeout(timeslice, 0);
@@ -102,8 +102,8 @@ Mocha.Runner.immediately = function (callback) {
  * This is useful when running tests in a browser because window.onerror will
  * only receive the 'message' attribute of the Error.
  */
-mocha.throwError = function (err) {
-  uncaughtExceptionHandlers.forEach(function (fn) {
+mocha.throwError = function(err) {
+  uncaughtExceptionHandlers.forEach(function(fn) {
     fn(err);
   });
   throw err;
@@ -114,7 +114,7 @@ mocha.throwError = function (err) {
  * Normally this would happen in Mocha.prototype.loadFiles.
  */
 
-mocha.ui = function (ui) {
+mocha.ui = function(ui) {
   Mocha.prototype.ui.call(this, ui);
   this.suite.emit('pre-require', global, null, this);
   return this;
@@ -124,9 +124,9 @@ mocha.ui = function (ui) {
  * Setup mocha with the given setting options.
  */
 
-mocha.setup = function (opts) {
+mocha.setup = function(opts) {
   if (typeof opts === 'string') {
-    opts = { ui: opts };
+    opts = {ui: opts};
   }
   for (var opt in opts) {
     if (opts.hasOwnProperty(opt)) {
@@ -140,7 +140,7 @@ mocha.setup = function (opts) {
  * Run mocha, returning the Runner.
  */
 
-mocha.run = function (fn) {
+mocha.run = function(fn) {
   var options = mocha.options;
   mocha.globals('location');
 
@@ -155,10 +155,14 @@ mocha.run = function (fn) {
     mocha.invert();
   }
 
-  return Mocha.prototype.run.call(mocha, function (err) {
+  return Mocha.prototype.run.call(mocha, function(err) {
     // The DOM Document is not available in Web Workers.
     var document = global.document;
-    if (document && document.getElementById('mocha') && options.noHighlighting !== true) {
+    if (
+      document &&
+      document.getElementById('mocha') &&
+      options.noHighlighting !== true
+    ) {
       Mocha.utils.highlightTags('code');
     }
     if (fn) {

karma.conf.js

@@ -16,11 +16,7 @@ const browserPlatformPairs = {
 module.exports = config => {
   let bundleDirpath;
   const cfg = {
-    frameworks: [
-      'browserify',
-      'expect',
-      'mocha'
-    ],
+    frameworks: ['browserify', 'expect', 'mocha'],
     files: [
       // we use the BDD interface for all of the tests that
       // aren't interface-specific.
@@ -32,8 +28,9 @@ module.exports = config => {
     },
     browserify: {
       debug: true,
-      configure: function configure (b) {
-        b.ignore('glob')
+      configure: function configure(b) {
+        b
+          .ignore('glob')
           .ignore('fs')
           .ignore('path')
           .ignore('supports-color')
@@ -43,8 +40,10 @@ module.exports = config => {
             }
             if (bundleDirpath) {
               // write bundle to directory for debugging
-              fs.writeFileSync(path.join(bundleDirpath,
-                `mocha.${Date.now()}.js`), content);
+              fs.writeFileSync(
+                path.join(bundleDirpath, `mocha.${Date.now()}.js`),
+                content
+              );
             }
           });
       }
@@ -155,7 +154,7 @@ module.exports = config => {
   config.set(cfg);
 };
 
-function addSauceTests (cfg) {
+function addSauceTests(cfg) {
   cfg.reporters.push('saucelabs');
   const browsers = Object.keys(browserPlatformPairs);
   cfg.browsers = cfg.browsers.concat(browsers);