Bug 1577746 - Enable ESLint rule object-shorthand for dom/. r=baku

Differential Revision: https://phabricator.services.mozilla.com/D44149

.eslintrc.js

@@ -259,7 +259,6 @@ module.exports = {
     "rules": {
       "consistent-return": "off",
       "dot-notation": "off",
-      "object-shorthand": "off",
       "mozilla/avoid-removeChild": "off",
       "mozilla/consistent-if-bracing": "off",
       "mozilla/no-arbitrary-setTimeout": "off",

dom/animation/test/chrome/test_animation_observers_sync.html

@@ -43,7 +43,7 @@ function setupSynchronousObserver(t, target, subtree) {
   t.add_cleanup(() => {
     observer.disconnect();
   });
-  observer.observe(target, { animations: true, subtree: subtree });
+  observer.observe(target, { animations: true, subtree });
   return observer;
 }
 

dom/animation/test/chrome/test_simulate_compute_values_failure.html

@@ -54,7 +54,7 @@ function assert_properties_equal(actual, expected) {
 
 // Shorthand for constructing a value object
 function value(offset, value, composite, easing) {
-  return { offset: offset, value: value, easing: easing, composite: composite };
+  return { offset, value, easing, composite };
 }
 
 var gTests = [

dom/animation/test/testcommon.js

@@ -136,7 +136,7 @@ function assert_properties_equal(actual, expected) {
  *   e.g. { offset: 0.1, value: '1px', composite: 'replace', easing: 'ease'}
  */
 function valueFormat(offset, value, composite, easing) {
-  return { offset: offset, value: value, easing: easing, composite: composite };
+  return { offset, value, easing, composite };
 }
 
 /**

dom/base/ContentAreaDropListener.jsm

@@ -18,11 +18,11 @@ ContentAreaDropListener.prototype = {
   classID: Components.ID("{1f34bc80-1bc7-11d6-a384-d705dd0746fc}"),
   QueryInterface: ChromeUtils.generateQI([Ci.nsIDroppedLinkHandler]),
 
-  _addLink: function(links, url, name, type) {
+  _addLink(links, url, name, type) {
     links.push({ url, name, type });
   },
 
-  _addLinksFromItem: function(links, dt, i) {
+  _addLinksFromItem(links, dt, i) {
     let types = dt.mozTypesAt(i);
     let type, data;
 
@@ -107,7 +107,7 @@ ContentAreaDropListener.prototype = {
     }
   },
 
-  _getDropLinks: function(dt) {
+  _getDropLinks(dt) {
     let links = [];
     for (let i = 0; i < dt.mozItemCount; i++) {
       this._addLinksFromItem(links, dt, i);
@@ -115,12 +115,7 @@ ContentAreaDropListener.prototype = {
     return links;
   },
 
-  _validateURI: function(
-    dataTransfer,
-    uriString,
-    disallowInherit,
-    triggeringPrincipal
-  ) {
+  _validateURI(dataTransfer, uriString, disallowInherit, triggeringPrincipal) {
     if (!uriString) {
       return "";
     }
@@ -159,7 +154,7 @@ ContentAreaDropListener.prototype = {
     return uri.spec;
   },
 
-  _getTriggeringPrincipalFromDataTransfer: function(
+  _getTriggeringPrincipalFromDataTransfer(
     aDataTransfer,
     fallbackToSystemPrincipal
   ) {
@@ -212,12 +207,12 @@ ContentAreaDropListener.prototype = {
     );
   },
 
-  getTriggeringPrincipal: function(aEvent) {
+  getTriggeringPrincipal(aEvent) {
     let dataTransfer = aEvent.dataTransfer;
     return this._getTriggeringPrincipalFromDataTransfer(dataTransfer, true);
   },
 
-  getCSP: function(aEvent) {
+  getCSP(aEvent) {
     let sourceNode = aEvent.dataTransfer.mozSourceNode;
     if (aEvent.dataTransfer.mozCSP !== null) {
       return aEvent.dataTransfer.mozCSP;
@@ -239,7 +234,7 @@ ContentAreaDropListener.prototype = {
     return null;
   },
 
-  canDropLink: function(aEvent, aAllowSameDocument) {
+  canDropLink(aEvent, aAllowSameDocument) {
     if (this._eventTargetIsDisabled(aEvent)) {
       return false;
     }
@@ -287,7 +282,7 @@ ContentAreaDropListener.prototype = {
     return true;
   },
 
-  dropLink: function(aEvent, aName, aDisallowInherit) {
+  dropLink(aEvent, aName, aDisallowInherit) {
     aName.value = "";
     let links = this.dropLinks(aEvent, aDisallowInherit);
     let url = "";
@@ -302,7 +297,7 @@ ContentAreaDropListener.prototype = {
     return url;
   },
 
-  dropLinks: function(aEvent, aDisallowInherit) {
+  dropLinks(aEvent, aDisallowInherit) {
     if (aEvent && this._eventTargetIsDisabled(aEvent)) {
       return [];
     }
@@ -334,7 +329,7 @@ ContentAreaDropListener.prototype = {
     return links;
   },
 
-  validateURIsForDrop: function(aEvent, aURIs, aDisallowInherit) {
+  validateURIsForDrop(aEvent, aURIs, aDisallowInherit) {
     let dataTransfer = aEvent.dataTransfer;
     let triggeringPrincipal = this._getTriggeringPrincipalFromDataTransfer(
       dataTransfer,
@@ -351,11 +346,11 @@ ContentAreaDropListener.prototype = {
     }
   },
 
-  queryLinks: function(aDataTransfer) {
+  queryLinks(aDataTransfer) {
     return this._getDropLinks(aDataTransfer);
   },
 
-  _eventTargetIsDisabled: function(aEvent) {
+  _eventTargetIsDisabled(aEvent) {
     let ownerDoc = aEvent.originalTarget.ownerDocument;
     if (!ownerDoc || !ownerDoc.defaultView) {
       return false;

dom/base/DOMRequestHelper.jsm

@@ -59,7 +59,7 @@ DOMRequestIpcHelper.prototype = {
    *  - or only strings containing the message name, in which case the listener
    *    will be added as a strong reference by default.
    */
-  addMessageListeners: function(aMessages) {
+  addMessageListeners(aMessages) {
     if (!aMessages) {
       return;
     }
@@ -100,7 +100,7 @@ DOMRequestIpcHelper.prototype = {
    * 'aMessages' is expected to be a string or an array of strings containing
    * the message names of the listeners to be removed.
    */
-  removeMessageListeners: function(aMessages) {
+  removeMessageListeners(aMessages) {
     if (!this._listeners || !aMessages) {
       return;
     }
@@ -142,7 +142,7 @@ DOMRequestIpcHelper.prototype = {
    *  - or only strings containing the message name, in which case the listener
    *    will be added as a strong referred one by default.
    */
-  initDOMRequestHelper: function(aWindow, aMessages) {
+  initDOMRequestHelper(aWindow, aMessages) {
     // Query our required interfaces to force a fast fail if they are not
     // provided. These calls will throw if the interface is not available.
     this.QueryInterface(Ci.nsISupportsWeakReference);
@@ -170,7 +170,7 @@ DOMRequestIpcHelper.prototype = {
     );
   },
 
-  destroyDOMRequestHelper: function() {
+  destroyDOMRequestHelper() {
     if (this._destroyed) {
       return;
     }
@@ -198,7 +198,7 @@ DOMRequestIpcHelper.prototype = {
     this._window = null;
   },
 
-  observe: function(aSubject, aTopic, aData) {
+  observe(aSubject, aTopic, aData) {
     if (aTopic !== "inner-window-destroyed") {
       return;
     }
@@ -211,7 +211,7 @@ DOMRequestIpcHelper.prototype = {
     this.destroyDOMRequestHelper();
   },
 
-  getRequestId: function(aRequest) {
+  getRequestId(aRequest) {
     if (!this._requests) {
       this._requests = {};
     }
@@ -221,37 +221,37 @@ DOMRequestIpcHelper.prototype = {
     return id;
   },
 
-  getPromiseResolverId: function(aPromiseResolver) {
+  getPromiseResolverId(aPromiseResolver) {
     // Delegates to getRequest() since the lookup table is agnostic about
     // storage.
     return this.getRequestId(aPromiseResolver);
   },
 
-  getRequest: function(aId) {
+  getRequest(aId) {
     if (this._requests && this._requests[aId]) {
       return this._requests[aId];
     }
   },
 
-  getPromiseResolver: function(aId) {
+  getPromiseResolver(aId) {
     // Delegates to getRequest() since the lookup table is agnostic about
     // storage.
     return this.getRequest(aId);
   },
 
-  removeRequest: function(aId) {
+  removeRequest(aId) {
     if (this._requests && this._requests[aId]) {
       delete this._requests[aId];
     }
   },
 
-  removePromiseResolver: function(aId) {
+  removePromiseResolver(aId) {
     // Delegates to getRequest() since the lookup table is agnostic about
     // storage.
     this.removeRequest(aId);
   },
 
-  takeRequest: function(aId) {
+  takeRequest(aId) {
     if (!this._requests || !this._requests[aId]) {
       return null;
     }
@@ -260,20 +260,20 @@ DOMRequestIpcHelper.prototype = {
     return request;
   },
 
-  takePromiseResolver: function(aId) {
+  takePromiseResolver(aId) {
     // Delegates to getRequest() since the lookup table is agnostic about
     // storage.
     return this.takeRequest(aId);
   },
 
-  _getRandomId: function() {
+  _getRandomId() {
     return Cc["@mozilla.org/uuid-generator;1"]
       .getService(Ci.nsIUUIDGenerator)
       .generateUUID()
       .toString();
   },
 
-  createRequest: function() {
+  createRequest() {
     // If we don't have a valid window object, throw.
     if (!this._window) {
       Cu.reportError(
@@ -289,7 +289,7 @@ DOMRequestIpcHelper.prototype = {
    * PromiseInit callback. The promise constructor is obtained from the
    * reference to window owned by this DOMRequestIPCHelper.
    */
-  createPromise: function(aPromiseInit) {
+  createPromise(aPromiseInit) {
     // If we don't have a valid window object, throw.
     if (!this._window) {
       Cu.reportError(
@@ -304,7 +304,7 @@ DOMRequestIpcHelper.prototype = {
    * createPromiseWithId() creates a new Promise, accepting a callback
    * which is immediately called with the generated resolverId.
    */
-  createPromiseWithId: function(aCallback) {
+  createPromiseWithId(aCallback) {
     return this.createPromise((aResolve, aReject) => {
       let resolverId = this.getPromiseResolverId({
         resolve: aResolve,
@@ -314,7 +314,7 @@ DOMRequestIpcHelper.prototype = {
     });
   },
 
-  forEachRequest: function(aCallback) {
+  forEachRequest(aCallback) {
     if (!this._requests) {
       return;
     }
@@ -326,7 +326,7 @@ DOMRequestIpcHelper.prototype = {
     });
   },
 
-  forEachPromiseResolver: function(aCallback) {
+  forEachPromiseResolver(aCallback) {
     if (!this._requests) {
       return;
     }

dom/base/test/browser_bug1011748.js

@@ -4,7 +4,7 @@ add_task(async function() {
   var statusTexts = [];
   var xhr = new XMLHttpRequest();
   var observer = {
-    observe: function(aSubject, aTopic, aData) {
+    observe(aSubject, aTopic, aData) {
       try {
         var channel = aSubject.QueryInterface(Ci.nsIHttpChannel);
         channel.getResponseHeader("Location");

dom/base/test/browser_use_counters.js

@@ -194,9 +194,7 @@ var check_use_counter_iframe = async function(
   await waitForPageLoad(gBrowser.selectedBrowser);
 
   // Inject our desired file into the iframe of the newly-loaded page.
-  await ContentTask.spawn(gBrowser.selectedBrowser, { file: file }, function(
-    opts
-  ) {
+  await ContentTask.spawn(gBrowser.selectedBrowser, { file }, function(opts) {
     let iframe = content.document.getElementById("content");
     iframe.src = opts.file;
 
@@ -268,22 +266,20 @@ var check_use_counter_img = async function(file, use_counter_middlefix) {
   await waitForPageLoad(gBrowser.selectedBrowser);
 
   // Inject our desired file into the img of the newly-loaded page.
-  await ContentTask.spawn(
-    gBrowser.selectedBrowser,
-    { file: file },
-    async function(opts) {
-      let img = content.document.getElementById("display");
-      img.src = opts.file;
+  await ContentTask.spawn(gBrowser.selectedBrowser, { file }, async function(
+    opts
+  ) {
+    let img = content.document.getElementById("display");
+    img.src = opts.file;
 
-      return new Promise(resolve => {
-        let listener = event => {
-          img.removeEventListener("load", listener, true);
-          resolve();
-        };
-        img.addEventListener("load", listener, true);
-      });
-    }
-  );
+    return new Promise(resolve => {
+      let listener = event => {
+        img.removeEventListener("load", listener, true);
+        resolve();
+      };
+      img.addEventListener("load", listener, true);
+    });
+  });
 
   // Tear down the page.
   let tabClosed = BrowserTestUtils.waitForTabClosing(newTab);

dom/base/test/file_bug1008126_worker.js

@@ -16,11 +16,11 @@ var gData1 = "TEST_DATA_1:ABCDEFGHIJKLMNOPQRSTUVWXYZ" + gPadding;
 var gData2 = "TEST_DATA_2:1234567890" + gPadding;
 
 function ok(a, msg) {
-  postMessage({ type: "status", status: !!a, msg: msg });
+  postMessage({ type: "status", status: !!a, msg });
 }
 
 function is(a, b, msg) {
-  postMessage({ type: "status", status: a === b, msg: msg });
+  postMessage({ type: "status", status: a === b, msg });
 }
 
 function checkData(xhr, data, mapped, cb) {

dom/base/test/file_bug416317.xhtml

@@ -453,7 +453,7 @@
     }
 
     function check( type, root, expect, fragment ){
-      var walker = document.createTreeWalker( root, NodeFilter.SHOW_ELEMENT, { acceptNode: function(){ return 1; } } );
+      var walker = document.createTreeWalker( root, NodeFilter.SHOW_ELEMENT, { acceptNode(){ return 1; } } );
 
       while ( walker.nextNode() ) {
         var div = walker.currentNode;

dom/base/test/file_bug907892.html

@@ -8,5 +8,5 @@
     threw = true;
   }
   var sandboxed = (location.search == "?sandboxed");
-  parent.postMessage({ threw: threw, sandboxed: sandboxed }, "*");
+  parent.postMessage({ threw, sandboxed }, "*");
 </script>

dom/base/test/file_bug945152_worker.js

@@ -9,11 +9,11 @@ for (var i = 0; i < gPaddingSize; i++) {
 }
 
 function ok(a, msg) {
-  postMessage({ type: "status", status: !!a, msg: msg });
+  postMessage({ type: "status", status: !!a, msg });
 }
 
 function is(a, b, msg) {
-  postMessage({ type: "status", status: a === b, msg: msg });
+  postMessage({ type: "status", status: a === b, msg });
 }
 
 function checkData(response, data_head, cb) {

dom/base/test/file_youtube_flash_embed.html

@@ -9,13 +9,13 @@
     <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
     <script type="application/javascript">
      let SimpleTest = {
-       finish: function() {
-         parent.postMessage(JSON.stringify({fn: "finish"}), "*");
-       }
+       finish() {
+    parent.postMessage(JSON.stringify({fn: "finish"}), "*");
+  }
      };
      ["ok", "is", "info"].forEach(fn => {
        self[fn] = function (...args) {
-         parent.postMessage(JSON.stringify({fn: fn, args: args}), "*");
+         parent.postMessage(JSON.stringify({fn, args}), "*");
        }
      });
      "use strict";

dom/base/test/test_audioNotification.html

@@ -16,7 +16,7 @@ SimpleTest.waitForExplicitFinish();
 var expectedNotification = null;
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     is(topic, "audio-playback", "audio-playback received");
     is(data, expectedNotification, "This is the right notification");
     runTest();

dom/base/test/test_audioNotificationNavigationWebAudio.html

@@ -23,7 +23,7 @@ async function startTest() {
 }
 
 const observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     is(topic, "audio-playback", "audio-playback received");
     const expected = expectedNotifications.shift();
     is(data, expected, `"${data}" is the right notification`);

dom/base/test/test_audioNotificationSilent_audioFile.html

@@ -20,7 +20,7 @@ var observerService = SpecialPowers.Cc["@mozilla.org/observer-service;1"]
                                    .getService(SpecialPowers.Ci.nsIObserverService);
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     is(topic, "audio-playback", "audio-playback received");
     is(data, expectedPlaybackActive, "Corrrect audible state");
     continueTest();

dom/base/test/test_audioNotificationSilent_webAudio.html

@@ -21,7 +21,7 @@ var observerService = SpecialPowers.Cc["@mozilla.org/observer-service;1"]
                                    .getService(SpecialPowers.Ci.nsIObserverService);
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     is(topic, "audio-playback", "audio-playback received");
     is(data, expectedPlaybackActive, "Corrrect audible state");
     is(ac.state, expectedPlaying, "Corrrect playing state");

dom/base/test/test_audioNotificationStopOnNavigation.html

@@ -18,7 +18,7 @@ var expectedNotification = null;
 var iframe = null;
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     is(topic, "audio-playback", "audio-playback received");
     is(data, expectedNotification, "This is the right notification");
     runTest();

dom/base/test/test_audioNotificationStream.html

@@ -16,7 +16,7 @@ SimpleTest.waitForExplicitFinish();
 var expectedNotification = null;
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     is(topic, "audio-playback", "audio-playback received");
     is(data, expectedNotification, "This is the right notification");
     runTest();

dom/base/test/test_audioNotificationWithEarlyPlay.html

@@ -16,7 +16,7 @@ SimpleTest.waitForExplicitFinish();
 var expectedNotification = null;
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     is(topic, "audio-playback", "audio-playback received");
     is(data, expectedNotification, "This is the right notification");
     runTest();

dom/base/test/test_bug375314.html

@@ -29,7 +29,7 @@ var policyID = SpecialPowers.wrap(SpecialPowers.Components).ID("{b80e19d0-878f-d
 var policyName = "@mozilla.org/testpolicy;1";
 var policy = {
   // nsISupports implementation
-  QueryInterface: function(iid) {
+  QueryInterface(iid) {
 
     iid = SpecialPowers.wrap(iid);
     if (iid.equals(Ci.nsISupports) ||
@@ -41,12 +41,12 @@ var policy = {
   },
 
   // nsIFactory implementation
-  createInstance: function(outer, iid) {
+  createInstance(outer, iid) {
     return this.QueryInterface(iid);
   },
 
   // nsIContentPolicy implementation
-  shouldLoad: function(contentLocation, loadInfo, mimeTypeGuess) {
+  shouldLoad(contentLocation, loadInfo, mimeTypeGuess) {
     let contentType = loadInfo.externalContentPolicyType;
     // Remember last content type seen for the test url
     if (SpecialPowers.wrap(contentLocation).spec == testURL) {
@@ -57,7 +57,7 @@ var policy = {
     return Ci.nsIContentPolicy.ACCEPT;
   },
 
-  shouldProcess: function(contentLocation, loadInfo, mimeTypeGuess) {
+  shouldProcess(contentLocation, loadInfo, mimeTypeGuess) {
 
     return Ci.nsIContentPolicy.ACCEPT;
   }

dom/base/test/test_bug475156.html

@@ -24,33 +24,33 @@ function fromCache(xhr)
 var tests = [
   // First just init the file with an ETag
   {
-    init: function(xhr) 
+    init(xhr) 
     {
       xhr.open("GET", path + "bug475156.sjs?etag=a1");
     },
     
-    loading: function(xhr)
+    loading(xhr)
     {
     },
 
-    done: function(xhr)
+    done(xhr)
     {
     },
   },
 
   // Try to load the file the first time regularly, we have to get 200 OK
   {    
-    init: function(xhr)
+    init(xhr)
     {
       xhr.open("GET", path + "bug475156.sjs");
     },
 
-    loading: function(xhr)
+    loading(xhr)
     {
       is(fromCache(xhr), false, "Not coming from the cache");
     },
 
-    done: function(xhr)
+    done(xhr)
     {
       is(xhr.status, 200, "We get a fresh version of the file");
       is(xhr.getResponseHeader("Etag"), "a1", "We got correct ETag");
@@ -60,18 +60,18 @@ var tests = [
 
   // Try to load the file the second time regularly, we have to get 304 Not Modified
   {    
-    init: function(xhr)
+    init(xhr)
     {
       xhr.open("GET", path + "bug475156.sjs");
       xhr.setRequestHeader("If-Match", "a1");
     },
 
-    loading: function(xhr)
+    loading(xhr)
     {
       is(fromCache(xhr), true, "Coming from the cache");
     },
 
-    done: function(xhr)
+    done(xhr)
     {
       is(xhr.status, 200, "We got cached version");
       is(xhr.getResponseHeader("Etag"), "a1", "We got correct ETag");
@@ -81,18 +81,18 @@ var tests = [
 
   // Try to load the file the third time regularly, we have to get 304 Not Modified
   {    
-    init: function(xhr)
+    init(xhr)
     {
       xhr.open("GET", path + "bug475156.sjs");
       xhr.setRequestHeader("If-Match", "a1");
     },
 
-    loading: function(xhr)
+    loading(xhr)
     {
       is(fromCache(xhr), true, "Coming from the cache");
     },
 
-    done: function(xhr)
+    done(xhr)
     {
       is(xhr.status, 200, "We got cached version");
       is(xhr.getResponseHeader("Etag"), "a1", "We got correct ETag");
@@ -102,34 +102,34 @@ var tests = [
 
   // Now modify the ETag
   {
-    init: function(xhr) 
+    init(xhr) 
     {
       xhr.open("GET", path + "bug475156.sjs?etag=a2");
     },
 
-    loading: function(xhr)
+    loading(xhr)
     {
     },
 
-    done: function(xhr)
+    done(xhr)
     {
     },
   },
 
   // Try to load the file, we have to get 200 OK with the new content
   {    
-    init: function(xhr)
+    init(xhr)
     {
       xhr.open("GET", path + "bug475156.sjs");
       xhr.setRequestHeader("If-Match", "a2");
     },
 
-    loading: function(xhr)
+    loading(xhr)
     {
       is(fromCache(xhr), false, "Not coming from the cache");
     },
 
-    done: function(xhr)
+    done(xhr)
     {
       is(xhr.status, 200, "We get a fresh version of the file");
       is(xhr.getResponseHeader("Etag"), "a2", "We got correct ETag");
@@ -139,18 +139,18 @@ var tests = [
 
   // Try to load the file the second time regularly, we have to get 304 Not Modified
   {    
-    init: function(xhr)
+    init(xhr)
     {
       xhr.open("GET", path + "bug475156.sjs");
       xhr.setRequestHeader("If-Match", "a2");
     },
 
-    loading: function(xhr)
+    loading(xhr)
     {
       is(fromCache(xhr), true, "Coming from the cache");
     },
 
-    done: function(xhr)
+    done(xhr)
     {
       is(xhr.status, 200, "We got cached version");
       is(xhr.getResponseHeader("Etag"), "a2", "We got correct ETag");
@@ -160,18 +160,18 @@ var tests = [
 
   // Try to load the file the third time regularly, we have to get 304 Not Modified
   {    
-    init: function(xhr)
+    init(xhr)
     {
       xhr.open("GET", path + "bug475156.sjs");
       xhr.setRequestHeader("If-Match", "a2");
     },
 
-    loading: function(xhr)
+    loading(xhr)
     {
       is(fromCache(xhr), true, "Coming from the cache");
     },
 
-    done: function(xhr)
+    done(xhr)
     {
       is(xhr.status, 200, "We got cached version");
       is(xhr.getResponseHeader("Etag"), "a2", "We got correct ETag");
@@ -181,34 +181,34 @@ var tests = [
 
   // Now modify the ETag ones more
   {
-    init: function(xhr) 
+    init(xhr) 
     {
       xhr.open("GET", path + "bug475156.sjs?etag=a3");
     },
 
-    loading: function(xhr)
+    loading(xhr)
     {
     },
 
-    done: function(xhr)
+    done(xhr)
     {
     },
   },
 
   // Try to load the file, we have to get 200 OK with the new content
   {    
-    init: function(xhr)
+    init(xhr)
     {
       xhr.open("GET", path + "bug475156.sjs");
       xhr.setRequestHeader("If-Match", "a3");
     },
 
-    loading: function(xhr)
+    loading(xhr)
     {
       is(fromCache(xhr), false, "Not coming from the cache");
     },
 
-    done: function(xhr)
+    done(xhr)
     {
       is(xhr.status, 200, "We get a fresh version of the file");
       is(xhr.getResponseHeader("Etag"), "a3", "We got correct ETag");
@@ -218,18 +218,18 @@ var tests = [
 
   // Try to load the file the second time regularly, we have to get 304 Not Modified
   {    
-    init: function(xhr)
+    init(xhr)
     {
       xhr.open("GET", path + "bug475156.sjs");
       xhr.setRequestHeader("If-Match", "a3");
     },
 
-    loading: function(xhr)
+    loading(xhr)
     {
       is(fromCache(xhr), true, "Coming from the cache");
     },
 
-    done: function(xhr)
+    done(xhr)
     {
       is(xhr.status, 200, "We got cached version");
       is(xhr.getResponseHeader("Etag"), "a3", "We got correct ETag");
@@ -239,18 +239,18 @@ var tests = [
 
   // Try to load the file the third time regularly, we have to get 304 Not Modified
   {    
-    init: function(xhr)
+    init(xhr)
     {
       xhr.open("GET", path + "bug475156.sjs");
       xhr.setRequestHeader("If-Match", "a3");
     },
 
-    loading: function(xhr)
+    loading(xhr)
     {
       is(fromCache(xhr), true, "Coming from the cache");
     },
 
-    done: function(xhr)
+    done(xhr)
     {
       is(xhr.status, 200, "We got cached version");
       is(xhr.getResponseHeader("Etag"), "a3", "We got correct ETag");
@@ -260,15 +260,15 @@ var tests = [
 
   // Load one last time to reset the state variable in the .sjs file
   {
-    init: function (xhr) {
+    init (xhr) {
       xhr.open("GET", path + "bug475156.sjs");
       xhr.setRequestHeader("If-Match", "a1");
     },
 
-    loading: function (xhr) {
+    loading (xhr) {
     },
 
-    done: function (xhr) {
+    done (xhr) {
     },
   },
 ]

dom/base/test/test_bug498897.html

@@ -29,7 +29,7 @@ var policyID = SpecialPowers.wrap(SpecialPowers.Components).ID("{65944d64-2390-4
 var policyName = "@mozilla.org/498897_testpolicy;1";
 var policy = {
   // nsISupports implementation
-  QueryInterface: function(iid) {
+  QueryInterface(iid) {
     if (iid.equals(Ci.nsISupports) ||
         iid.equals(Ci.nsIFactory) ||
         iid.equals(Ci.nsIContentPolicy))
@@ -39,12 +39,12 @@ var policy = {
   },
 
   // nsIFactory implementation
-  createInstance: function(outer, iid) {
+  createInstance(outer, iid) {
     return this.QueryInterface(iid);
   },
 
   // nsIContentPolicy implementation
-  shouldLoad: function(contentLocation, loadInfo, mimeTypeGuess) {
+  shouldLoad(contentLocation, loadInfo, mimeTypeGuess) {
     var url = window.location.href.substr(0, window.location.href.indexOf('test_bug498897'));
     let loadingPrincipal = loadInfo.loadingPrincipal;
     if (loadingPrincipal) {
@@ -58,7 +58,7 @@ var policy = {
     return Ci.nsIContentPolicy.ACCEPT;
   },
 
-  shouldProcess: function(contentLocation, loadInfo, mimeTypeGuess) {
+  shouldProcess(contentLocation, loadInfo, mimeTypeGuess) {
     return Ci.nsIContentPolicy.ACCEPT;
   }
 }

dom/base/test/test_bug628938.html

@@ -119,7 +119,7 @@ function noWhiteSpaceWalk()
   var walker = document.createTreeWalker(document.getElementById('content'),
                                          NodeFilter.SHOW_ALL,
                                          {
-                                           acceptNode : function(node) {
+                                           acceptNode(node) {
                                              if (node.nodeType == Node.TEXT_NODE &&
                                                  !(/[^\t\n\r ]/.test(node.nodeValue)))
                                                return NodeFilter.FILTER_REJECT;
@@ -175,7 +175,7 @@ function onlyDivSubTreeWalk()
   var walker = document.createTreeWalker(document.getElementById('content'),
                                          NodeFilter.SHOW_ALL,
                                          {
-                                           acceptNode : function(node) {
+                                           acceptNode(node) {
                                              if (node.nodeType == Node.TEXT_NODE &&
                                                  !(/[^\t\n\r ]/.test(node.nodeValue)))
                                                return NodeFilter.FILTER_REJECT;
@@ -213,7 +213,7 @@ function onlyDivDataWalk()
   var walker = document.createTreeWalker(document.getElementById('content'),
                                          NodeFilter.SHOW_ALL,
                                          {
-                                           acceptNode : function(node) {
+                                           acceptNode(node) {
                                              if (node.nodeName == "DIV" ||
                                                  (node.parentNode &&
                                                   node.parentNode.nodeName == "DIV"))

dom/base/test/test_encodeToStringWithRequiresReinitAfterOutput.html

@@ -45,19 +45,19 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1352882
 
     encoder = getEncoder();
     var stream = {
-      close: function() {
-      },
+      close() {
+    },
 
-      flush: function() {
-      },
+      flush() {
+    },
 
-      write: function(buffer, length) {
-        return length;
-      },
+      write(buffer, length) {
+      return length;
+    },
 
-      writeFrom: function(buffer, length) {
-        return length;
-      },
+      writeFrom(buffer, length) {
+      return length;
+    },
     };
 
     encoder.setCharset("utf-8");

dom/base/test/test_explicit_user_agent.html

@@ -53,7 +53,7 @@
     headers.set('User-Agent', 'custom-ua/20.0');
     var response2 = await fetch('file_explicit_user_agent.sjs', {
       method: 'GET',
-      headers: headers,
+      headers,
     });
     is(response2.headers.get("Result-User-Agent"), 'custom-ua/20.0',
        "The user-agent is the custom UA");

dom/base/test/test_intersectionobservers.html

@@ -52,7 +52,7 @@ limitations under the License.
   function it(msg, fn) {
     tests.push({
       msg: `${msg} [${curDescribeMsg}]`,
-      fn: fn
+      fn
     });
   }
 
@@ -74,14 +74,14 @@ limitations under the License.
   function expect(val) {
     return {
       to: {
-        throwException: function (regexp) {
-          try {
-            val();
-            ok(false, `${curItMsg} - an exception should have beeen thrown`);
-          } catch (e) {
-            ok(regexp.test(e), `${curItMsg} - supplied regexp should match thrown exception`);
-          }
-        },
+        throwException (regexp) {
+        try {
+          val();
+          ok(false, `${curItMsg} - an exception should have beeen thrown`);
+        } catch (e) {
+          ok(regexp.test(e), `${curItMsg} - supplied regexp should match thrown exception`);
+        }
+      },
         get be() {
           var fn = function (expected) {
             is(val, expected, curItMsg);
@@ -97,25 +97,25 @@ limitations under the License.
           };
           return fn;
         },
-        eql: function (expected) {
-          if (Array.isArray(expected)) {
-            if (!Array.isArray(val)) {
-              ok(false, curItMsg, `${curItMsg} - should be an array,`);
-              return;
-            }
-            is(val.length, expected.length, curItMsg, `${curItMsg} - arrays should be the same length`);
-            if (expected.length != val.length) {
-              return;
-            }
-            for (var i = 0; i < expected.length; i++) {
-              is(val[i], expected[i], `${curItMsg} - array elements at position ${i} should be equal`);
-              if (expected[i] != val[i]) {
-                return;
-              }
-            }
-            ok(true);
+        eql (expected) {
+        if (Array.isArray(expected)) {
+          if (!Array.isArray(val)) {
+            ok(false, curItMsg, `${curItMsg} - should be an array,`);
+            return;
           }
-        },
+          is(val.length, expected.length, curItMsg, `${curItMsg} - arrays should be the same length`);
+          if (expected.length != val.length) {
+            return;
+          }
+          for (var i = 0; i < expected.length; i++) {
+            is(val[i], expected[i], `${curItMsg} - array elements at position ${i} should be equal`);
+            if (expected[i] != val[i]) {
+              return;
+            }
+          }
+          ok(true);
+        }
+      },
       }
     }
   }
@@ -149,22 +149,22 @@ limitations under the License.
   }
 
   var sinon = {
-    spy: function () {
-      var cbs = [];
-      var fn = function () {
-        fn.callCount++;
-        fn.lastCall = { args: arguments };
-        if (cbs.length) {
-          cbs.shift()();
-        }
-      };
-      fn.callCount = 0;
-      fn.lastCall = { args: [] };
-      fn.waitForNotification = (fn1) => {
-        cbs.push(fn1);
-      };
-      return fn;
-    }
+    spy () {
+    var cbs = [];
+    var fn = function () {
+      fn.callCount++;
+      fn.lastCall = { args: arguments };
+      if (cbs.length) {
+        cbs.shift()();
+      }
+    };
+    fn.callCount = 0;
+    fn.lastCall = { args: [] };
+    fn.waitForNotification = (fn1) => {
+      cbs.push(fn1);
+    };
+    return fn;
+  }
   };
 
   var ASYNC_TIMEOUT = 300;

dom/base/test/test_mutationobservers.html

@@ -68,10 +68,10 @@ if (!("isnot" in window)) {
 if (!("SimpleTest" in window)) {
   window.SimpleTest =
   {
-    finish: function() {
+    finish() {
       document.getElementById("log").appendChild(document.createTextNode("DONE"));
     },
-    waitForExplicitFinish: function() {}
+    waitForExplicitFinish() {}
   }
 }
 

dom/base/test/test_noAudioNotification.html

@@ -14,7 +14,7 @@
 SimpleTest.waitForExplicitFinish();
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     ok(false, "should not receive audio-playback notification!");
   }
 };

dom/base/test/test_noAudioNotificationOnMutedElement.html

@@ -16,7 +16,7 @@ SimpleTest.waitForExplicitFinish();
 var expectedNotification = null;
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     if (expectedNotification !== null) {
       is(topic, "audio-playback", "audio-playback received");
       is(data, expectedNotification, "This is the right notification");

dom/base/test/test_noAudioNotificationOnMutedOrVolume0Element.html

@@ -16,7 +16,7 @@ SimpleTest.waitForExplicitFinish();
 var expectedNotification = null;
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     if (expectedNotification !== null) {
       is(topic, "audio-playback", "audio-playback received");
       is(data, expectedNotification, "This is the right notification");

dom/base/test/test_noAudioNotificationOnVolume0Element.html

@@ -16,7 +16,7 @@ SimpleTest.waitForExplicitFinish();
 var expectedNotification = null;
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     if (expectedNotification !== null) {
       is(topic, "audio-playback", "audio-playback received");
       is(data, expectedNotification, "This is the right notification");

dom/base/test/test_noWebAudioNotification.html

@@ -15,7 +15,7 @@ SimpleTest.waitForExplicitFinish();
 SimpleTest.requestFlakyTimeout("Testing an event not happening");
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     ok(false, "should not receive audio-playback notification!");
   }
 };

dom/base/test/test_postMessages.html

@@ -316,7 +316,7 @@ function test_windowToWindow() {
     clonableObjectsEveryWhere: true,
     clonableObjectsSameProcess: true,
     transferableObjects: true,
-    send: function(what, ports) {
+    send(what, ports) {
       return new Promise(function(r, rr) {
         resolve = r;
 
@@ -329,7 +329,7 @@ function test_windowToWindow() {
       });
     },
 
-    finished: function() {
+    finished() {
       onmessage = null;
       next();
     }
@@ -370,7 +370,7 @@ function test_windowToIframeURL(url) {
       clonableObjectsEveryWhere: true,
       clonableObjectsSameProcess: true,
       transferableObjects: true,
-      send: function(what, ports) {
+      send(what, ports) {
         return new Promise(function(r, rr) {
           resolve = r;
           try {
@@ -382,7 +382,7 @@ function test_windowToIframeURL(url) {
         });
       },
 
-      finished: function() {
+      finished() {
         document.body.removeChild(ifr);
         onmessage = null;
         next();
@@ -418,7 +418,7 @@ function test_workers() {
       clonableObjectsEveryWhere: true,
       clonableObjectsSameProcess: true,
       transferableObjects: true,
-      send: function(what, ports) {
+      send(what, ports) {
         return new Promise(function(r, rr) {
           resolve = r;
           try {
@@ -430,7 +430,7 @@ function test_workers() {
         });
       },
 
-      finished: function() {
+      finished() {
         onmessage = null;
         next();
       }
@@ -462,7 +462,7 @@ function test_broadcastChannel() {
     clonableObjectsEveryWhere: true,
     clonableObjectsSameProcess: false,
     transferableObjects: false,
-    send: function(what, ports) {
+    send(what, ports) {
       return new Promise(function(r, rr) {
         if (ports.length) {
           rr();
@@ -474,7 +474,7 @@ function test_broadcastChannel() {
       });
     },
 
-    finished: function() {
+    finished() {
       onmessage = null;
       next();
     }
@@ -508,7 +508,7 @@ function test_broadcastChannel_inWorkers() {
       clonableObjectsEveryWhere: true,
       clonableObjectsSameProcess: false,
       transferableObjects: false,
-      send: function(what, ports) {
+      send(what, ports) {
         return new Promise(function(r, rr) {
           if (ports.length) {
             rr();
@@ -520,7 +520,7 @@ function test_broadcastChannel_inWorkers() {
         });
       },
 
-      finished: function() {
+      finished() {
         onmessage = null;
         next();
       }
@@ -550,7 +550,7 @@ function test_messagePort() {
     clonableObjectsEveryWhere: true,
     clonableObjectsSameProcess: false,
     transferableObjects: true,
-    send: function(what, ports) {
+    send(what, ports) {
       return new Promise(function(r, rr) {
         resolve = r;
         try {
@@ -562,7 +562,7 @@ function test_messagePort() {
       });
     },
 
-    finished: function() {
+    finished() {
       onmessage = null;
       next();
     }
@@ -596,7 +596,7 @@ function test_messagePort_inWorkers() {
       clonableObjectsEveryWhere: true,
       clonableObjectsSameProcess: false,
       transferableObjects: true,
-      send: function(what, ports) {
+      send(what, ports) {
         return new Promise(function(r, rr) {
           resolve = r;
           try {
@@ -608,7 +608,7 @@ function test_messagePort_inWorkers() {
         });
       },
 
-      finished: function() {
+      finished() {
         onmessage = null;
         next();
       }

dom/base/test/test_webaudioNotification.html

@@ -18,7 +18,7 @@ var expectedNotification = null;
 var iframe = null;
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     is(topic, "audio-playback", "audio-playback received");
     is(data, expectedNotification, "This is the right notification");
     SimpleTest.executeSoon(runTest);

dom/base/test/test_webaudioNotificationStopOnNavigation.html

@@ -18,7 +18,7 @@ var expectedNotification = null;
 var iframe = null;
 
 var observer = {
-  observe: function(subject, topic, data) {
+  observe(subject, topic, data) {
     is(topic, "audio-playback", "audio-playback received");
     is(data, expectedNotification, "This is the right notification");
     runTest();

dom/canvas/test/captureStream_common.js

@@ -40,7 +40,7 @@ CaptureStreamTestHelper.prototype = {
    * Perform the drawing operation on each animation frame until stop is called
    * on the returned object.
    */
-  startDrawing: function(f) {
+  startDrawing(f) {
     var stop = false;
     var draw = () => {
       if (stop) {
@@ -54,7 +54,7 @@ CaptureStreamTestHelper.prototype = {
   },
 
   /* Request a frame from the stream played by |video|. */
-  requestFrame: function(video) {
+  requestFrame(video) {
     info("Requesting frame from " + video.id);
     video.srcObject.requestFrame();
   },
@@ -63,7 +63,7 @@ CaptureStreamTestHelper.prototype = {
    * Returns the pixel at (|offsetX|, |offsetY|) (from top left corner) of
    * |video| as an array of the pixel's color channels: [R,G,B,A].
    */
-  getPixel: function(video, offsetX = 0, offsetY = 0) {
+  getPixel(video, offsetX = 0, offsetY = 0) {
     // Avoids old values in case of a transparent image.
     CaptureStreamTestHelper2D.prototype.clear.call(this, this.cout);
 
@@ -89,7 +89,7 @@ CaptureStreamTestHelper.prototype = {
    *
    * Threshold defaults to 0 which is an exact match.
    */
-  isPixel: function(px, refColor, threshold = 0) {
+  isPixel(px, refColor, threshold = 0) {
     return px.every((ch, i) => Math.abs(ch - refColor.data[i]) <= threshold);
   },
 
@@ -100,14 +100,14 @@ CaptureStreamTestHelper.prototype = {
    *
    * Threshold defaults to 127 which should be far enough for most cases.
    */
-  isPixelNot: function(px, refColor, threshold = 127) {
+  isPixelNot(px, refColor, threshold = 127) {
     return px.some((ch, i) => Math.abs(ch - refColor.data[i]) > threshold);
   },
 
   /*
    * Behaves like isPixelNot but ignores the alpha channel.
    */
-  isOpaquePixelNot: function(px, refColor, threshold) {
+  isOpaquePixelNot(px, refColor, threshold) {
     px[3] = refColor.data[3];
     return this.isPixelNot(px, refColor, threshold);
   },
@@ -116,7 +116,7 @@ CaptureStreamTestHelper.prototype = {
    * Returns a promise that resolves when the provided function |test|
    * returns true, or rejects when the optional `cancel` promise resolves.
    */
-  waitForPixel: async function(
+  async waitForPixel(
     video,
     test,
     {
@@ -151,7 +151,7 @@ CaptureStreamTestHelper.prototype = {
    * on all channels. Use |threshold| for fuzzy matching the color on each
    * channel, in the range [0,255]. 0 means exact match, 255 accepts anything.
    */
-  pixelMustBecome: async function(
+  async pixelMustBecome(
     video,
     refColor,
     { threshold = 0, infoString = "n/a", cancel = new Promise(() => {}) } = {}
@@ -202,7 +202,7 @@ CaptureStreamTestHelper.prototype = {
    * top left pixel of |video| becomes |refColor|. The test is failed if the
    * time is not reached, or if the cancel promise resolves.
    */
-  pixelMustNotBecome: async function(
+  async pixelMustNotBecome(
     video,
     refColor,
     { threshold = 0, time = 5000, infoString = "n/a" } = {}
@@ -236,7 +236,7 @@ CaptureStreamTestHelper.prototype = {
   },
 
   /* Create an element of type |type| with id |id| and append it to the body. */
-  createAndAppendElement: function(type, id) {
+  createAndAppendElement(type, id) {
     var e = document.createElement(type);
     e.id = id;
     e.width = this.elemWidth;

dom/canvas/test/imagebitmap_on_worker.js

@@ -1,7 +1,7 @@
 importScripts("imagebitmap_bug1239300.js");
 
 function ok(expect, msg) {
-  postMessage({ type: "status", status: !!expect, msg: msg });
+  postMessage({ type: "status", status: !!expect, msg });
 }
 
 function doneTask() {

dom/canvas/test/imagebitmap_structuredclone.js

@@ -1,5 +1,5 @@
 function ok(expect, msg) {
-  postMessage({ type: "status", status: !!expect, msg: msg });
+  postMessage({ type: "status", status: !!expect, msg });
 }
 
 onmessage = function(event) {
@@ -21,7 +21,7 @@ onmessage = function(event) {
       );
 
       // send the newly created ImageBitmap back to the main-thread
-      postMessage({ type: "bitmap2", bitmap: bitmap });
+      postMessage({ type: "bitmap2", bitmap });
 
       // finish the test
       postMessage({ type: "finish" });

dom/canvas/test/imagebitmap_structuredclone_iframe.html

@@ -4,7 +4,7 @@
   <script type="application/javascript">
 
   function ok(expect, msg) {
-    window.parent.postMessage({"type": "status", status: !!expect, msg: msg}, "*");
+    window.parent.postMessage({"type": "status", status: !!expect, msg}, "*");
   }
 
   window.onmessage = function(event) {

dom/canvas/test/imagebitmap_structuredclone_utils.js

@@ -87,7 +87,7 @@ function compareImageBitmapWithImageElement(imageBitmap, imageElement) {
   var yGap = imageElement.naturalHeight / 4;
   for (var y = 0; y < imageElement.naturalHeight; y += yGap) {
     for (var x = 0; x < imageElement.naturalWidth; x += xGap) {
-      pixels.push({ x: x, y: y });
+      pixels.push({ x, y });
     }
   }
 
@@ -123,7 +123,7 @@ function compareImageBitmapWithImageData(imageBitmap, imageData, info) {
   var yGap = imageBitmap.height / 4;
   for (var y = 0; y < imageBitmap.height; y += yGap) {
     for (var x = 0; x < imageBitmap.width; x += xGap) {
-      pixels.push({ x: x, y: y });
+      pixels.push({ x, y });
     }
   }
 

dom/canvas/test/offscreencanvas.js

@@ -31,11 +31,11 @@
   }
 
   function drawCount(count) {
-    postMessageGeneral({ type: "draw", count: count });
+    postMessageGeneral({ type: "draw", count });
   }
 
   function sendBlob(blob) {
-    postMessageGeneral({ type: "blob", blob: blob });
+    postMessageGeneral({ type: "blob", blob });
   }
 
   function sendImageBitmap(img) {

dom/canvas/test/test_imagebitmap_on_worker.html

@@ -39,7 +39,7 @@ TaskWithCrop.prototype.constructor = TaskWithCrop;
 
 var WORKER_TASKS = {
   tasks: [], // an arrayf of Task objects
-  dispatch: function() {
+  dispatch() {
     if (this.tasks.length) {
       worker.postMessage(this.tasks.pop());
     } else {

dom/canvas/test/test_offscreencanvas_many.html

@@ -43,7 +43,7 @@ function runTest() {
     }
 
     var offscreenCanvas = canvas.transferControlToOffscreen();
-    worker.postMessage({test: test, canvas: offscreenCanvas}, [offscreenCanvas]);
+    worker.postMessage({test, canvas: offscreenCanvas}, [offscreenCanvas]);
   }
 
   /* create 4 workers that do the regular drawing test and 4 workers

dom/canvas/test/webgl-mochitest/driver-info.js

@@ -123,16 +123,16 @@ DriverInfo = (function() {
   dump(x => console.log(x));
 
   return {
-    DRIVER: DRIVER,
-    OS: OS,
-    dump: dump,
-    getDriver: function() {
+    DRIVER,
+    OS,
+    dump,
+    getDriver() {
       return kDriver;
     },
-    getOS: function() {
+    getOS() {
       return kOS;
     },
-    getOSVersion: function() {
+    getOSVersion() {
       return kOSVersion;
     },
   };

dom/canvas/test/webgl-mochitest/webgl-util.js

@@ -161,15 +161,15 @@ WebGLUtil = (function() {
   }
 
   return {
-    setErrorFunc: setErrorFunc,
-    setWarningFunc: setWarningFunc,
+    setErrorFunc,
+    setWarningFunc,
 
-    getWebGL: getWebGL,
-    withWebGL2: withWebGL2,
-    createShaderById: createShaderById,
-    createProgramByIds: createProgramByIds,
+    getWebGL,
+    withWebGL2,
+    createShaderById,
+    createProgramByIds,
 
-    linkProgramByIds: function(gl, vertSrcElem, fragSrcElem) {
+    linkProgramByIds(gl, vertSrcElem, fragSrcElem) {
       const prog = gl.createProgram();
 
       function attachShaderById(type, srcElem) {

dom/encoding/test/test_BOMEncoding.js

@@ -206,7 +206,7 @@ function testDecodeValidBOMUTF16() {
   ];
   testBOMCharset({
     encoding: "utf-16be",
-    data: data,
+    data,
     expected: expectedString,
     msg: "decoder valid UTF-16BE test.",
   });
@@ -218,7 +218,7 @@ function testBOMEncodingUTF8() {
   var expectedString = " !\"#$%&'";
   testBOMCharset({
     encoding: "utf-8",
-    data: data,
+    data,
     expected: expectedString,
     msg: "utf-8 encoding.",
   });
@@ -228,7 +228,7 @@ function testBOMEncodingUTF8() {
   expectedString = " !\"#$%&'";
   testBOMCharset({
     encoding: "utf-8",
-    data: data,
+    data,
     expected: expectedString,
     msg: "valid utf-8 encoding provided with VALID utf-8 BOM test.",
   });
@@ -238,7 +238,7 @@ function testBOMEncodingUTF8() {
   testBOMCharset({
     encoding: "utf-8",
     fatal: true,
-    data: data,
+    data,
     error: "TypeError",
     msg: "valid utf-8 encoding provided with invalid utf-8 fatal BOM test.",
   });
@@ -248,7 +248,7 @@ function testBOMEncodingUTF8() {
   expectedString = "\ufffd\ufffd !\"#$%&'";
   testBOMCharset({
     encoding: "utf-8",
-    data: data,
+    data,
     expected: expectedString,
     msg: "valid utf-8 encoding provided with invalid utf-8 BOM test.",
   });
@@ -257,7 +257,7 @@ function testBOMEncodingUTF8() {
   data = [0xff, 0xfe, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27];
   testBOMCharset({
     encoding: "",
-    data: data,
+    data,
     error: "RangeError",
     msg: "empty encoding provided with invalid utf-8 BOM test.",
   });
@@ -462,14 +462,14 @@ function testMoreBOMEncoding() {
   testBOMCharset({
     encoding: "utf-16be",
     fatal: true,
-    data: data,
+    data,
     expected: "\ufffe" + expectedString,
     msg: "test decoder invalid BOM encoding for utf-16be fatal.",
   });
 
   testBOMCharset({
     encoding: "utf-16be",
-    data: data,
+    data,
     expected: "\ufffe" + expectedString,
     msg: "test decoder invalid BOM encoding for utf-16be.",
   });
@@ -1081,7 +1081,7 @@ function testMoreBOMEncoding() {
   testBOMCharset({
     encoding: "utf-8",
     fatal: true,
-    data: data,
+    data,
     error: "TypeError",
     msg:
       "test decoder invalid BOM encoding for valid utf-8 fatal provided label.",
@@ -1089,7 +1089,7 @@ function testMoreBOMEncoding() {
 
   testBOMCharset({
     encoding: "utf-8",
-    data: data,
+    data,
     expected: "\ufffd\ufffd" + expectedString,
     msg: "test decoder invalid BOM encoding for valid utf-8 provided label.",
   });
@@ -1202,14 +1202,14 @@ function testMoreBOMEncoding() {
   testBOMCharset({
     encoding: "greek",
     fatal: true,
-    data: data,
+    data,
     error: "TypeError",
     msg: "test decoder encoding provided with invalid BOM encoding for greek.",
   });
 
   testBOMCharset({
     encoding: "greek",
-    data: data,
+    data,
     expected: expectedString,
     msg: "test decoder encoding provided with invalid BOM encoding for greek.",
   });

dom/encoding/test/test_TextDecoder.js

@@ -165,7 +165,7 @@ function testConstructorEncodingOption(aData, aExpectedString) {
   // valid encoding passed
   var encoding = "iso-8859-11";
   testCharset({
-    encoding: encoding,
+    encoding,
     input: aData,
     expected: aExpectedString,
     msg: "decoder testing constructor valid encoding.",
@@ -174,7 +174,7 @@ function testConstructorEncodingOption(aData, aExpectedString) {
   // passing spaces for encoding
   encoding = "   ";
   testCharset({
-    encoding: encoding,
+    encoding,
     input: aData,
     error: "RangeError",
     errorMessage: errorMessage(encoding),
@@ -184,7 +184,7 @@ function testConstructorEncodingOption(aData, aExpectedString) {
   // invalid encoding passed
   encoding = "asdfasdf";
   testCharset({
-    encoding: encoding,
+    encoding,
     input: aData,
     error: "RangeError",
     errorMessage: errorMessage(encoding),
@@ -194,7 +194,7 @@ function testConstructorEncodingOption(aData, aExpectedString) {
   // null encoding passed
   encoding = null;
   testCharset({
-    encoding: encoding,
+    encoding,
     input: aData,
     error: "RangeError",
     errorMessage: errorMessage(encoding),
@@ -204,7 +204,7 @@ function testConstructorEncodingOption(aData, aExpectedString) {
   // empty encoding passed
   encoding = "";
   testCharset({
-    encoding: encoding,
+    encoding,
     input: aData,
     error: "RangeError",
     errorMessage: errorMessage(encoding),
@@ -519,7 +519,7 @@ function testDecodeStreamCompositions() {
       }
       testCharset({
         encoding: t.encoding,
-        array: array,
+        array,
         msg: "decode() stream test " + t.encoding + " " + a.join("-") + ".",
       });
       while (a[l] > 1) {

dom/encoding/test/unit/head.js

@@ -122,8 +122,8 @@ var tests = [];
 
 function test(func, msg) {
   tests.push({
-    msg: msg,
-    func: func,
+    msg,
+    func,
     filename: Components.stack.caller.filename,
   });
 }

dom/encoding/test/worker_helper.js

@@ -8,7 +8,7 @@ function runTestInWorker(files) {
     var asserts;
     test = function(func, msg) {
       asserts = [];
-      tests.push({ asserts: asserts, msg: msg });
+      tests.push({ asserts, msg });
     };
     assert_equals = function(result, expected, msg) {
       asserts.push(["assert_equals", result, expected, msg]);

dom/events/test/error_event_worker.js

@@ -8,9 +8,9 @@ addEventListener("error", function(e) {
 });
 onerror = function(message, filename, lineno) {
   var obj = {
-    message: message,
-    filename: filename,
-    lineno: lineno,
+    message,
+    filename,
+    lineno,
     type: "callback",
   };
   postMessage(obj);

dom/events/test/pointerevents/mochitest_support_external.js

@@ -69,7 +69,7 @@ var MouseEventHelper = (function() {
     BUTTONS_5TH: utils.MOUSE_BUTTONS_5TH_BUTTON,
 
     // Utils
-    computeButtonsMaskFromButton: function(aButton) {
+    computeButtonsMaskFromButton(aButton) {
       // Since the range of button values is 0 ~ 2 (see nsIDOMWindowUtils.idl),
       // we can use an array to find out the desired mask.
       var mask = [
@@ -83,7 +83,7 @@ var MouseEventHelper = (function() {
       return mask;
     },
 
-    checkExitState: function() {
+    checkExitState() {
       ok(!this.BUTTONS_STATE, "Mismatched mousedown/mouseup caught.");
     },
   };
@@ -179,7 +179,7 @@ var TouchEventHelper = {
   TOUCH_STATE: false,
 
   // Utils
-  checkExitState: function() {
+  checkExitState() {
     ok(!this.TOUCH_STATE, "Mismatched touchstart/touchend caught.");
   },
 };

dom/events/test/pointerevents/mochitest_support_internal.js

@@ -26,7 +26,7 @@ function resultCallback(aTestObj) {
   window.opener.postMessage(
     {
       type: "RESULT",
-      message: message,
+      message,
       result: aTestObj["status"] === aTestObj["PASS"],
     },
     PARENT_ORIGIN

dom/events/test/pointerevents/pointerevent_support.js

@@ -49,16 +49,16 @@ function check_PointerEvent(event, testNamePrefix) {
   // * if the attribute is "readonly", it cannot be changed
   // TA: 1.1, 1.2
   var idl_type_check = {
-    long: function(v) {
+    long(v) {
       return typeof v === "number" && Math.round(v) === v;
     },
-    float: function(v) {
+    float(v) {
       return typeof v === "number";
     },
-    string: function(v) {
+    string(v) {
       return typeof v === "string";
     },
-    boolean: function(v) {
+    boolean(v) {
       return typeof v === "boolean";
     },
   };

dom/events/test/test_all_synthetic_events.html

@@ -24,70 +24,70 @@
  *         aName specifies the event's type name.  See each create() code for the detail of aProps.
  */
 const kEventConstructors = {
-  Event:                                     { create: function (aName, aProps) {
+  Event:                                     { create (aName, aProps) {
                                                          return new Event(aName, aProps);
                                                        },
                                              },
-  AnimationEvent:                            { create: function (aName, aProps) {
+  AnimationEvent:                            { create (aName, aProps) {
                                                          return new AnimationEvent(aName, aProps);
                                                        },
                                              },
-  AnimationPlaybackEvent:                    { create: function (aName, aProps) {
+  AnimationPlaybackEvent:                    { create (aName, aProps) {
                                                          return new AnimationPlaybackEvent(aName, aProps);
                                                        },
                                              },
   AudioProcessingEvent:                      { create: null, // Cannot create untrusted event from JS.
                                              },
-  BeforeUnloadEvent:                         { create: function (aName, aProps) {
+  BeforeUnloadEvent:                         { create (aName, aProps) {
                                                          var e = document.createEvent("beforeunloadevent");
                                                          e.initEvent(aName, aProps.bubbles, aProps.cancelable);
                                                          return e;
                                                        },
                                              },
-  BlobEvent:                                 { create: function (aName, aProps) {
+  BlobEvent:                                 { create (aName, aProps) {
                                                          return new BlobEvent(aName, aProps);
                                                        },
                                              },
-  CallEvent:                                 { create: function (aName, aProps) {
+  CallEvent:                                 { create (aName, aProps) {
                                                           return new CallEvent(aName, aProps);
                                                        },
                                              },
-  CallGroupErrorEvent:                       { create: function (aName, aProps) {
+  CallGroupErrorEvent:                       { create (aName, aProps) {
                                                           return new CallGroupErrorEvent(aName, aProps);
                                                        },
                                              },
-  CFStateChangeEvent:                        { create: function (aName, aProps) {
+  CFStateChangeEvent:                        { create (aName, aProps) {
                                                           return new CFStateChangeEvent(aName, aProps);
                                                        },
                                              },
-  CloseEvent:                                { create: function (aName, aProps) {
+  CloseEvent:                                { create (aName, aProps) {
                                                          return new CloseEvent(aName, aProps);
                                                        },
                                              },
-  ClipboardEvent:                            { create: function (aName, aProps) {
+  ClipboardEvent:                            { create (aName, aProps) {
                                                          return new ClipboardEvent(aName, aProps);
                                                        },
                                              },
-  CompositionEvent:                          { create: function (aName, aProps) {
+  CompositionEvent:                          { create (aName, aProps) {
                                                          var e = document.createEvent("compositionevent");
                                                          e.initCompositionEvent(aName, aProps.bubbles, aProps.cancelable,
                                                                                 aProps.view, aProps.data, aProps.locale);
                                                          return e;
                                                        },
                                              },
-  CustomEvent:                               { create: function (aName, aProps) {
+  CustomEvent:                               { create (aName, aProps) {
                                                          return new CustomEvent(aName, aProps);
                                                        },
                                              },
-  DataErrorEvent:                            { create: function (aName, aProps) {
+  DataErrorEvent:                            { create (aName, aProps) {
                                                           return new DataErrorEvent(aName, aProps);
                                                        },
                                              },
-  DeviceLightEvent:                          { create: function (aName, aProps) {
+  DeviceLightEvent:                          { create (aName, aProps) {
                                                          return new DeviceLightEvent(aName, aProps);
                                                        },
                                              },
-  DeviceMotionEvent:                         { create: function (aName, aProps) {
+  DeviceMotionEvent:                         { create (aName, aProps) {
                                                          var e = document.createEvent("devicemotionevent");
                                                          e.initDeviceMotionEvent(aName, aProps.bubbles, aProps.cancelable, aProps.acceleration,
                                                                                  aProps.accelerationIncludingGravity, aProps.rotationRate,
@@ -95,19 +95,19 @@ const kEventConstructors = {
                                                          return e;
                                                        },
                                              },
-  DeviceOrientationEvent:                    { create: function (aName, aProps) {
+  DeviceOrientationEvent:                    { create (aName, aProps) {
                                                          return new DeviceOrientationEvent(aName, aProps);
                                                        },
                                              },
-  DeviceProximityEvent:                      { create: function (aName, aProps) {
+  DeviceProximityEvent:                      { create (aName, aProps) {
                                                          return new DeviceProximityEvent(aName, aProps);
                                                        },
                                              },
-  DownloadEvent:                             { create: function (aName, aProps) {
+  DownloadEvent:                             { create (aName, aProps) {
                                                          return new DownloadEvent(aName, aProps);
                                                        },
                                              },
-  DragEvent:                                 { create: function (aName, aProps) {
+  DragEvent:                                 { create (aName, aProps) {
                                                          var e = document.createEvent("dragevent");
                                                          e.initDragEvent(aName, aProps.bubbles, aProps.cancelable,
                                                                          aProps.view, aProps.detail,
@@ -118,93 +118,93 @@ const kEventConstructors = {
                                                          return e;
                                                        },
                                              },
-  ErrorEvent:                                { create: function (aName, aProps) {
+  ErrorEvent:                                { create (aName, aProps) {
                                                          return new ErrorEvent(aName, aProps);
                                                        },
   },
-  FocusEvent:                                { create: function (aName, aProps) {
+  FocusEvent:                                { create (aName, aProps) {
                                                          return new FocusEvent(aName, aProps);
                                                        },
                                              },
-  FontFaceSetLoadEvent:                      { create: function (aName, aProps) {
+  FontFaceSetLoadEvent:                      { create (aName, aProps) {
                                                          return new FontFaceSetLoadEvent(aName, aProps);
                                                        },
                                              },
-  GamepadEvent:                              { create: function (aName, aProps) {
+  GamepadEvent:                              { create (aName, aProps) {
                                                          return new GamepadEvent(aName, aProps);
                                                        },
                                              },
-  GamepadAxisMoveEvent:                      { create: function (aName, aProps) {
+  GamepadAxisMoveEvent:                      { create (aName, aProps) {
                                                          return new GamepadAxisMoveEvent(aName, aProps);
                                                        },
                                              },
-  GamepadButtonEvent:                        { create: function (aName, aProps) {
+  GamepadButtonEvent:                        { create (aName, aProps) {
                                                          return new GamepadButtonEvent(aName, aProps);
                                                        },
                                              },
-  HashChangeEvent:                           { create: function (aName, aProps) {
+  HashChangeEvent:                           { create (aName, aProps) {
                                                          return new HashChangeEvent(aName, aProps);
                                                        },
                                              },
-  IDBVersionChangeEvent:                     { create: function (aName, aProps) {
+  IDBVersionChangeEvent:                     { create (aName, aProps) {
                                                          return new IDBVersionChangeEvent(aName, aProps);
                                                        },
                                              },
-  ImageCaptureErrorEvent:                                { create: function (aName, aProps) {
+  ImageCaptureErrorEvent:                                { create (aName, aProps) {
                                                          return new ImageCaptureErrorEvent(aName, aProps);
                                                        },
                                              },
-  InputEvent:                                { create: function (aName, aProps) {
+  InputEvent:                                { create (aName, aProps) {
                                                          return new InputEvent(aName, aProps);
                                                        },
                                              },
-  KeyEvent:                                  { create: function (aName, aProps) {
+  KeyEvent:                                  { create (aName, aProps) {
                                                          return new KeyboardEvent(aName, aProps);
                                                        },
                                              },
-  KeyboardEvent:                             { create: function (aName, aProps) {
+  KeyboardEvent:                             { create (aName, aProps) {
                                                          return new KeyboardEvent(aName, aProps);
                                                        },
                                              },
-  MediaEncryptedEvent:                       { create: function (aName, aProps) {
+  MediaEncryptedEvent:                       { create (aName, aProps) {
                                                          return new MediaEncryptedEvent(aName, aProps);
                                                        },
                                              },
-  MediaKeyMessageEvent:                      { create: function (aName, aProps) {
+  MediaKeyMessageEvent:                      { create (aName, aProps) {
                                                          return new MediaKeyMessageEvent(aName, {
                                                            messageType: "license-request",
                                                            message: new ArrayBuffer(0)
                                                          });
                                                        },
                                              },
-  MediaQueryListEvent:                       { create: function (aName, aProps) {
+  MediaQueryListEvent:                       { create (aName, aProps) {
                                                          return new MediaQueryListEvent(aName, aProps);
                                                        },
                                              },
-  MediaRecorderErrorEvent:                   { create: function (aName, aProps) {
+  MediaRecorderErrorEvent:                   { create (aName, aProps) {
                                                          aProps.error = new DOMException();
                                                          return new MediaRecorderErrorEvent(aName, aProps);
                                                        },
                                              },
-  MediaStreamEvent:                          { create: function (aName, aProps) {
+  MediaStreamEvent:                          { create (aName, aProps) {
                                                          return new MediaStreamEvent(aName, aProps);
                                                        },
                                              },
   MediaStreamTrackEvent:                     {
                                                // Difficult to test required arguments.
                                              },
-  MessageEvent:                              { create: function (aName, aProps) {
+  MessageEvent:                              { create (aName, aProps) {
                                                          var e = new MessageEvent("messageevent", { bubbles: aProps.bubbles,
                                                              cancelable: aProps.cancelable, data: aProps.data, origin: aProps.origin,
                                                              lastEventId: aProps.lastEventId, source: aProps.source });
                                                          return e;
                                                        },
                                              },
-  MouseEvent:                                { create: function (aName, aProps) {
+  MouseEvent:                                { create (aName, aProps) {
                                                          return new MouseEvent(aName, aProps);
                                                        },
                                              },
-  MouseScrollEvent:                          { create: function (aName, aProps) {
+  MouseScrollEvent:                          { create (aName, aProps) {
                                                          var e = document.createEvent("mousescrollevents");
                                                          e.initMouseScrollEvent(aName, aProps.bubbles, aProps.cancelable,
                                                                                 aProps.view, aProps.detail,
@@ -215,43 +215,43 @@ const kEventConstructors = {
                                                          return e;
                                                        },
                                              },
-  MozApplicationEvent:                       { create: function (aName, aProps) {
+  MozApplicationEvent:                       { create (aName, aProps) {
                                                          return new MozApplicationEvent(aName, aProps);
                                                        },
                                              },
-  MozClirModeEvent:                          { create: function (aName, aProps) {
+  MozClirModeEvent:                          { create (aName, aProps) {
                                                          return new MozClirModeEvent(aName, aProps);
                                                        },
                                              },
-  MozContactChangeEvent:                     { create: function (aName, aProps) {
+  MozContactChangeEvent:                     { create (aName, aProps) {
                                                          return new MozContactChangeEvent(aName, aProps);
                                                        },
                                              },
-  MozEmergencyCbModeEvent:                   { create: function (aName, aProps) {
+  MozEmergencyCbModeEvent:                   { create (aName, aProps) {
                                                           return new MozEmergencyCbModeEvent(aName, aProps);
                                                        },
                                              },
-  MozMessageDeletedEvent:                    { create: function (aName, aProps) {
+  MozMessageDeletedEvent:                    { create (aName, aProps) {
                                                          return new MozMessageDeletedEvent(aName, aProps);
                                                        },
                                              },
-  MozMmsEvent:                               { create: function (aName, aProps) {
+  MozMmsEvent:                               { create (aName, aProps) {
                                                          return new MozMmsEvent(aName, aProps);
                                                        },
                                              },
-  MozOtaStatusEvent:                         { create: function (aName, aProps) {
+  MozOtaStatusEvent:                         { create (aName, aProps) {
                                                           return new MozOtaStatusEvent(aName, aProps);
                                                        },
                                              },
-  MozSmsEvent:                               { create: function (aName, aProps) {
+  MozSmsEvent:                               { create (aName, aProps) {
                                                          return new MozSmsEvent(aName, aProps);
                                                        },
                                              },
-  MozStkCommandEvent:                        { create: function (aName, aProps) {
+  MozStkCommandEvent:                        { create (aName, aProps) {
                                                           return new MozStkCommandEvent(aName, aProps);
                                                        },
                                              },
-  MutationEvent:                             { create: function (aName, aProps) {
+  MutationEvent:                             { create (aName, aProps) {
                                                          var e = document.createEvent("mutationevent");
                                                          e.initMutationEvent(aName, aProps.bubbles, aProps.cancelable,
                                                                              aProps.relatedNode, aProps.prevValue, aProps.newValue,
@@ -268,32 +268,32 @@ const kEventConstructors = {
                                                           }
                                                         : null,
                                              },
-  PageTransitionEvent:                       { create: function (aName, aProps) {
+  PageTransitionEvent:                       { create (aName, aProps) {
                                                          return new PageTransitionEvent(aName, aProps);
                                                        },
                                              },
-  PointerEvent:                              { create: function (aName, aProps) {
+  PointerEvent:                              { create (aName, aProps) {
                                                          return new PointerEvent(aName, aProps);
                                                        },
                                              },
-  PopStateEvent:                             { create: function (aName, aProps) {
+  PopStateEvent:                             { create (aName, aProps) {
                                                          return new PopStateEvent(aName, aProps);
                                                        },
                                              },
-  PopupBlockedEvent:                         { create: function (aName, aProps) {
+  PopupBlockedEvent:                         { create (aName, aProps) {
                                                          return new PopupBlockedEvent(aName, aProps);
                                                        },
                                              },
-  ProgressEvent:                             { create: function (aName, aProps) {
+  ProgressEvent:                             { create (aName, aProps) {
                                                          return new ProgressEvent(aName, aProps);
                                                        },
                                              },
-  PromiseRejectionEvent:                     { create: function (aName, aProps) {
+  PromiseRejectionEvent:                     { create (aName, aProps) {
                                                          aProps.promise = new Promise(() => {});
                                                          return new PromiseRejectionEvent(aName, aProps);
                                                        },
                                              },
-  RTCDataChannelEvent:                       { create: function (aName, aProps) {
+  RTCDataChannelEvent:                       { create (aName, aProps) {
                                                          let pc = new RTCPeerConnection();
                                                          aProps.channel = pc.createDataChannel("foo");
                                                          let e = new RTCDataChannelEvent(aName, aProps);
@@ -302,18 +302,18 @@ const kEventConstructors = {
                                                          return e;
                                                        },
                                              },
-  RTCDTMFToneChangeEvent:                       { create: function (aName, aProps) {
+  RTCDTMFToneChangeEvent:                       { create (aName, aProps) {
                                                          return new RTCDTMFToneChangeEvent(aName, aProps);
                                                        },
                                              },
-  RTCPeerConnectionIceEvent:                 { create: function (aName, aProps) {
+  RTCPeerConnectionIceEvent:                 { create (aName, aProps) {
                                                          return new RTCPeerConnectionIceEvent(aName, aProps);
                                                        },
                                              },
   RTCTrackEvent:                             {
                                                // Difficult to test required arguments.
                                              },
-  ScrollAreaEvent:                           { create: function (aName, aProps) {
+  ScrollAreaEvent:                           { create (aName, aProps) {
                                                          var e = document.createEvent("scrollareaevent");
                                                          e.initScrollAreaEvent(aName, aProps.bubbles, aProps.cancelable,
                                                                                aProps.view, aProps.details,
@@ -322,63 +322,63 @@ const kEventConstructors = {
                                                          return e;
                                                        },
                                              },
-  SpeechRecognitionError:                    { create: function (aName, aProps) {
+  SpeechRecognitionError:                    { create (aName, aProps) {
                                                          return new SpeechRecognitionError(aName, aProps);
                                                        },
                                              },
-  SpeechRecognitionEvent:                    { create: function (aName, aProps) {
+  SpeechRecognitionEvent:                    { create (aName, aProps) {
                                                          return new SpeechRecognitionEvent(aName, aProps);
                                                        },
                                              },
-  SpeechSynthesisErrorEvent:                 { create: function (aName, aProps) {
+  SpeechSynthesisErrorEvent:                 { create (aName, aProps) {
                                                          aProps.error = "synthesis-unavailable";
                                                          aProps.utterance = new SpeechSynthesisUtterance("Hello World");
                                                          return new SpeechSynthesisErrorEvent(aName, aProps);
                                                        },
                                              },
-  SpeechSynthesisEvent:                      { create: function (aName, aProps) {
+  SpeechSynthesisEvent:                      { create (aName, aProps) {
                                                          aProps.utterance = new SpeechSynthesisUtterance("Hello World");
                                                          return new SpeechSynthesisEvent(aName, aProps);
                                                        },
                                              },
-  StorageEvent:                              { create: function (aName, aProps) {
+  StorageEvent:                              { create (aName, aProps) {
                                                          return new StorageEvent(aName, aProps);
                                                        },
                                              },
-  StyleRuleChangeEvent:                      { create: function (aName, aProps) {
+  StyleRuleChangeEvent:                      { create (aName, aProps) {
                                                          return new StyleRuleChangeEvent(aName, aProps);
                                                        },
                                                chromeOnly: true,
                                              },
-  StyleSheetApplicableStateChangeEvent:      { create: function (aName, aProps) {
+  StyleSheetApplicableStateChangeEvent:      { create (aName, aProps) {
                                                          return new StyleSheetApplicableStateChangeEvent(aName, aProps);
                                                        },
                                                chromeOnly: true,
                                              },
-  StyleSheetChangeEvent:                     { create: function (aName, aProps) {
+  StyleSheetChangeEvent:                     { create (aName, aProps) {
                                                          return new StyleSheetChangeEvent(aName, aProps);
                                                        },
                                                chromeOnly: true,
                                              },
-  TCPSocketErrorEvent:                       { create: function(aName, aProps) {
+  TCPSocketErrorEvent:                       { create(aName, aProps) {
                                                          return new TCPSocketErrorEvent(aName, aProps);
                                                        },
                                              },
-  TCPSocketEvent:                            { create: function(aName, aProps) {
+  TCPSocketEvent:                            { create(aName, aProps) {
                                                          return new TCPSocketEvent(aName, aProps);
                                                        },
                                              },
-  TCPServerSocketEvent:                      { create: function(aName, aProps) {
+  TCPServerSocketEvent:                      { create(aName, aProps) {
                                                          return new TCPServerSocketEvent(aName, aProps);
                                                        },
                                              },
-  TimeEvent:                                 { create: function (aName, aProps) {
+  TimeEvent:                                 { create (aName, aProps) {
                                                          var e = document.createEvent("timeevent");
                                                          e.initTimeEvent(aName, aProps.view, aProps.detail);
                                                          return e;
                                                        },
                                              },
-  TouchEvent:                                { create: function (aName, aProps) {
+  TouchEvent:                                { create (aName, aProps) {
                                                          var e = document.createEvent("touchevent");
                                                          e.initTouchEvent(aName, aProps.bubbles, aProps.cancelable,
                                                                           aProps.view, aProps.detail,
@@ -387,23 +387,23 @@ const kEventConstructors = {
                                                          return e;
                                                        },
                                              },
-  TrackEvent:                                { create: function (aName, aProps) {
+  TrackEvent:                                { create (aName, aProps) {
                                                          return new TrackEvent(aName, aProps);
                                                        },
                                              },
-  TransitionEvent:                           { create: function (aName, aProps) {
+  TransitionEvent:                           { create (aName, aProps) {
                                                          return new TransitionEvent(aName, aProps);
                                                        },
                                              },
-  UIEvent:                                   { create: function (aName, aProps) {
+  UIEvent:                                   { create (aName, aProps) {
                                                          return new UIEvent(aName, aProps);
                                                        },
                                              },
-  UserProximityEvent:                        { create: function (aName, aProps) {
+  UserProximityEvent:                        { create (aName, aProps) {
                                                          return new UserProximityEvent(aName, aProps);
                                                        },
                                              },
-  USSDReceivedEvent:                         { create: function (aName, aProps) {
+  USSDReceivedEvent:                         { create (aName, aProps) {
                                                           return new USSDReceivedEvent(aName, aProps);
                                                        },
                                              },
@@ -413,15 +413,15 @@ const kEventConstructors = {
                                                // connected.  When Bug 1229480 lands, this test can be
                                                // updated to use the puppet VR device.
                                              },
-  WheelEvent:                                { create: function (aName, aProps) {
+  WheelEvent:                                { create (aName, aProps) {
                                                          return new WheelEvent(aName, aProps);
                                                        },
                                              },
-  WebGLContextEvent:                         { create: function (aName, aProps) {
+  WebGLContextEvent:                         { create (aName, aProps) {
                                                          return new WebGLContextEvent(aName, aProps);
                                                        },
                                              },
-  SecurityPolicyViolationEvent:              { create: function (aName, aProps) {
+  SecurityPolicyViolationEvent:              { create (aName, aProps) {
                                                          return new SecurityPolicyViolationEvent(aName, aProps);
                                                        },
                                              },

dom/events/test/test_bug422132.html

@@ -42,7 +42,7 @@ function runTests()
 
   var tests = [
     {
-      prepare: function() {
+      prepare() {
         scrollLeft = target.scrollLeft;
         scrollTop = target.scrollTop;
       },
@@ -61,14 +61,14 @@ function runTests()
         lineOrPageDeltaX: 0,
         lineOrPageDeltaY: 0
       },
-      check: function() {
+      check() {
         is(target.scrollLeft - scrollLeft, 1,
            "not scrolled to right by 0.5px delta value with pending 0.5px delta");
         is(target.scrollTop - scrollTop, 1,
            "not scrolled to bottom by 0.5px delta value with pending 0.5px delta");
       },
     }, {
-      prepare: function() {
+      prepare() {
         scrollLeft = target.scrollLeft;
         scrollTop = target.scrollTop;
       },
@@ -87,7 +87,7 @@ function runTests()
         lineOrPageDeltaX: 1,
         lineOrPageDeltaY: 1
       },
-      check: function() {
+      check() {
         is(target.scrollLeft - scrollLeft, 1,
            "not scrolled to right by 0.5 line delta value with pending 0.5 line delta");
         is(target.scrollTop - scrollTop, 1,

dom/events/test/test_bug603008.html

@@ -130,7 +130,7 @@ function testSingleTouch(name) {
   let touch1 = new testtouch({
     page: {x: Math.round(bcr.left + bcr.width/2),
            y: Math.round(bcr.top  + bcr.height/2)},
-    target: target
+    target
   });
   let event = new touchEvent({
     touches: [touch1],
@@ -176,7 +176,7 @@ function testSingleTouch2(name) {
     identifier: 0,
     page: {x: Math.round(bcr.left + bcr.width/2),
            y: Math.round(bcr.top  + bcr.height/2)},
-    target: target
+    target
   });
   let event1 = new touchEvent({
     touches: [touch1],
@@ -395,7 +395,7 @@ function testPreventDefault() {
   let touch1 = new testtouch({
     page: {x: bcr.left + bcr.width/2,
            y: bcr.top + bcr.height/2},
-    target: target
+    target
   });
   let event = new touchEvent({
     touches: [touch1],
@@ -507,7 +507,7 @@ function testNAC() {
   let touch1 = new testtouch({
     page: {x: Math.round(bcr.left + bcr.width/2),
            y: Math.round(bcr.top  + bcr.height/2)},
-    target: target
+    target
   });
   let event = new touchEvent({
     touches: [touch1],

dom/events/test/test_bug741666.html

@@ -123,7 +123,7 @@ function testPreventDefault(name) {
   let touch1 = new testtouch({
     page: {x: Math.round(bcr.left + bcr.width/2),
            y: Math.round(bcr.top  + bcr.height/2)},
-    target: target
+    target
   });
 
   let event = new touchEvent({

dom/events/test/test_bug822898.html

@@ -47,9 +47,9 @@ function createTestEventValue(name) {
   return function() {
     let event = new PointerEvent("pointerdown", {
       bubbles: true, cancelable: true, view: window,
-      detail: detail, screenX: screenX, screenY: screenY, clientX: clientX, clientY: clientY,
-      ctrlKey: ctrlKey, altKey: altKey, shiftKey: shiftKey, metaKey: metaKey,
-      button: button, relatedTarget: null, pointerId: pointerId
+      detail, screenX, screenY, clientX, clientY,
+      ctrlKey, altKey, shiftKey, metaKey,
+      button, relatedTarget: null, pointerId
     });
 
 

dom/events/test/test_bug946632.html

@@ -73,7 +73,7 @@ function prepare(check)
 
 var tests = [
   { 
-    check: function(event) {
+    check(event) {
       is(event.target, container, "<input> vertical line scroll targets container");
       ok(container.scrollTop > 0, "<input> vertical line scroll container.scrollTop");
       is(container.scrollLeft, 0, "<input> vertical line scroll container.scrollLeft");
@@ -87,7 +87,7 @@ var tests = [
     }
   },
  { 
-    check: function(event) {
+    check(event) {
       is(event.target, input, "<input> horizontal line scroll targets <input>");
       is(input.scrollTop, 0, "<input> horizontal line scroll input.scrollTop");
       ok(input.scrollLeft > 0, "<input> horizontal line scroll input.scrollLeft");
@@ -101,7 +101,7 @@ var tests = [
     }
   },
  { 
-    check: function(event) {
+    check(event) {
       is(event.target, container, "<input> vertical page scroll targets container");
       ok(container.scrollTop > 0, "<input> vertical line scroll container.scrollTop");
       is(container.scrollLeft, 0, "<input> vertical line scroll container.scrollLeft");
@@ -115,7 +115,7 @@ var tests = [
     }
   },
  { 
-    check: function(event) {
+    check(event) {
       is(event.target, input, "<input> horizontal page scroll targets <input>");
       is(input.scrollTop, 0, "<input> horizontal page scroll input.scrollTop");
       ok(input.scrollLeft > 0, "<input> horizontal page scroll input.scrollLeft");

dom/events/test/test_continuous_wheel_events.html

@@ -2666,7 +2666,7 @@ function* testContinuousTrustedEvents()
 
     // Tests for accumulation delta when delta_multiplier_is customized.
     { description: "lineOrPageDelta should be recomputed by ESM (pixel) #1",
-      prepare: function () {
+      prepare () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.delta_multiplier_x", 200],
                                            ["mousewheel.default.delta_multiplier_y", 300]]},
                                   continueTest);
@@ -2720,7 +2720,7 @@ function* testContinuousTrustedEvents()
       MozMousePixelScroll: {
         horizontal: { expected: true,   preventDefault: false, detail: Math.floor((gHorizontalLine / 4 + 1) * 2) },
         vertical:   { expected: true,   preventDefault: false, detail: Math.floor((gLineHeight / 8 + 1) * 3) } },
-      finished: function () {
+      finished () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.delta_multiplier_x", 100],
                                            ["mousewheel.default.delta_multiplier_y", 100]]},
                                   continueTest);
@@ -2728,7 +2728,7 @@ function* testContinuousTrustedEvents()
     },
 
     { description: "lineOrPageDelta should be recomputed by ESM (pixel, negative, shift) #1",
-      prepare: function () {
+      prepare () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.with_shift.delta_multiplier_x", 200],
                                            ["mousewheel.with_shift.delta_multiplier_y", 300]]},
                                   continueTest);
@@ -2782,7 +2782,7 @@ function* testContinuousTrustedEvents()
       MozMousePixelScroll: {
         horizontal: { expected: true,   preventDefault: false, detail: Math.ceil(-(gHorizontalLine / 4 + 1) * 2) },
         vertical:   { expected: true,   preventDefault: false, detail: Math.ceil(-(gLineHeight / 8 + 1) * 3) } },
-      finished: function () {
+      finished () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.with_shift.delta_multiplier_x", 100],
                                            ["mousewheel.with_shift.delta_multiplier_y", 100]]},
                                   continueTest);
@@ -2790,7 +2790,7 @@ function* testContinuousTrustedEvents()
     },
 
     { description: "lineOrPageDelta should be recomputed by ESM (line) #1",
-      prepare: function () {
+      prepare () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.delta_multiplier_x", 200],
                                            ["mousewheel.default.delta_multiplier_y", 100]]},
                                   continueTest);
@@ -2844,7 +2844,7 @@ function* testContinuousTrustedEvents()
       MozMousePixelScroll: {
         horizontal: { expected: true,  preventDefault: false, detail: Math.floor(gHorizontalLine * 0.6) },
         vertical:   { expected: true,  preventDefault: false, detail: Math.floor(gLineHeight * 0.4) } },
-      finished: function () {
+      finished () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.delta_multiplier_x", 100],
                                            ["mousewheel.default.delta_multiplier_y", 100]]},
                                   continueTest);
@@ -2852,7 +2852,7 @@ function* testContinuousTrustedEvents()
     },
 
     { description: "lineOrPageDelta should be recomputed by ESM (line, negative) #1",
-      prepare: function () {
+      prepare () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.delta_multiplier_x", 200],
                                            ["mousewheel.default.delta_multiplier_y", -100]]},
                                   continueTest);
@@ -2906,7 +2906,7 @@ function* testContinuousTrustedEvents()
       MozMousePixelScroll: {
         horizontal: { expected: true,  preventDefault: false, detail: Math.ceil(gHorizontalLine * -0.6) },
         vertical:   { expected: true,  preventDefault: false, detail: Math.floor(gLineHeight * 0.4) } },
-      finished: function () {
+      finished () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.delta_multiplier_x", 100],
                                            ["mousewheel.default.delta_multiplier_y", 100]]},
                                   continueTest);
@@ -2914,7 +2914,7 @@ function* testContinuousTrustedEvents()
     },
 
     { description: "lineOrPageDelta should be recomputed by ESM (page) #1",
-      prepare: function () {
+      prepare () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.delta_multiplier_x", 100],
                                            ["mousewheel.default.delta_multiplier_y", 200]]},
                                   continueTest);
@@ -2968,7 +2968,7 @@ function* testContinuousTrustedEvents()
       MozMousePixelScroll: {
         horizontal: { expected: true,  preventDefault: false, detail: Math.floor(gPageWidth * 0.4) },
         vertical:   { expected: true,  preventDefault: false, detail: Math.floor(gPageHeight * 0.8) } },
-      finished: function () {
+      finished () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.delta_multiplier_x", 100],
                                            ["mousewheel.default.delta_multiplier_y", 100]]},
                                   continueTest);
@@ -2976,7 +2976,7 @@ function* testContinuousTrustedEvents()
     },
 
     { description: "lineOrPageDelta should be recomputed by ESM (page, negative) #1",
-      prepare: function () {
+      prepare () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.delta_multiplier_x", 100],
                                            ["mousewheel.default.delta_multiplier_y", 200]]},
                                   continueTest);
@@ -3030,7 +3030,7 @@ function* testContinuousTrustedEvents()
       MozMousePixelScroll: {
         horizontal: { expected: true,  preventDefault: false, detail: Math.ceil(gPageWidth * -0.4) },
         vertical:   { expected: true,  preventDefault: false, detail: Math.ceil(gPageHeight * -0.8) } },
-      finished: function () {
+      finished () {
         SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.delta_multiplier_x", 100],
                                            ["mousewheel.default.delta_multiplier_y", 100]]},
                                   continueTest);

dom/events/test/test_eventctors.html

@@ -888,7 +888,7 @@ is(e.eventPhase, Event.NONE, "Wrong event phase");
 // InputEvent
 let dataTransfer = new DataTransfer();
 dataTransfer.setData("text/plain", "foo");
-e = new InputEvent("hello", {data: "something data", dataTransfer: dataTransfer, inputType: "invalid input type", isComposing: true});
+e = new InputEvent("hello", {data: "something data", dataTransfer, inputType: "invalid input type", isComposing: true});
 is(e.type, "hello", "InputEvent should set type attribute");
 is(e.data, "something data", "InputEvent should have data attribute");
 is(e.dataTransfer, dataTransfer, "InputEvent should have the dataTransfer");
@@ -903,7 +903,7 @@ is(e.inputType, "invalid input type", "InputEvent should have inputType attribut
 is(e.isComposing, true, "InputEvent should have isComposing attribute");
 
 dataTransfer = new DataTransfer();
-e = new InputEvent("hello", {data: "", dataTransfer: dataTransfer, inputType: "insertText"});
+e = new InputEvent("hello", {data: "", dataTransfer, inputType: "insertText"});
 is(e.data, "", "InputEvent.data should be empty string when empty string is specified explicitly");
 is(e.dataTransfer, dataTransfer, "InputEvent.dataTransfer should have the empty dataTransfer");
 is(e.inputType, "insertText", "InputEvent.inputType should return valid inputType from EditorInputType enum");

dom/events/test/test_moz_mouse_pixel_scroll_event.html

@@ -228,11 +228,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable128, y: gScrollable128
@@ -243,11 +243,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: -1.0, deltaY: -1.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable128, y: gScrollable128
@@ -258,11 +258,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable96, y: gScrollable96
@@ -273,11 +273,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: -1.0, deltaY: -1.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable96, y: gScrollable96
@@ -288,11 +288,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable64, y: gScrollable64
@@ -303,11 +303,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: -1.0, deltaY: -1.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable64, y: gScrollable64
@@ -318,11 +318,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable32, y: gScrollable32
@@ -333,11 +333,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: -1.0, deltaY: -1.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable32, y: gScrollable32
@@ -348,9 +348,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gRoot, y: gRoot
@@ -361,9 +361,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: -1.0, deltaY: -1.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gRoot, y: gRoot
@@ -374,11 +374,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable128
@@ -389,11 +389,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: -1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable128
@@ -404,11 +404,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable96
@@ -419,11 +419,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: -1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable96
@@ -434,11 +434,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable64
@@ -449,11 +449,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: -1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable64
@@ -464,11 +464,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable32
@@ -479,11 +479,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: -1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable32
@@ -494,9 +494,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gRoot
@@ -507,9 +507,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: -1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gRoot
@@ -520,11 +520,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable128, y: null
@@ -535,11 +535,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: -1.0, deltaY: 0.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable128, y: null
@@ -550,11 +550,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable96, y: null
@@ -565,11 +565,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: -1.0, deltaY: 0.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable96, y: null
@@ -580,11 +580,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable64, y: null
@@ -595,11 +595,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: -1.0, deltaY: 0.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable64, y: null
@@ -610,11 +610,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable32, y: null
@@ -625,11 +625,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: -1.0, deltaY: 0.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable32, y: null
@@ -640,9 +640,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gRoot, y: null
@@ -653,9 +653,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: -1.0, deltaY: 0.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gRoot, y: null
@@ -668,11 +668,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable128, y: gScrollable128
@@ -683,11 +683,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: -1.0, deltaY: -1.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable128, y: gScrollable128
@@ -698,11 +698,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable96, y: gScrollable96
@@ -713,11 +713,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: -1.0, deltaY: -1.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable96, y: gScrollable96
@@ -728,11 +728,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable64, y: gScrollable64
@@ -743,11 +743,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: -1.0, deltaY: -1.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable64, y: gScrollable64
@@ -758,11 +758,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable32, y: gScrollable32
@@ -773,11 +773,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: -1.0, deltaY: -1.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable32, y: gScrollable32
@@ -788,9 +788,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gRoot, y: gRoot
@@ -801,9 +801,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: -1.0, deltaY: -1.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gRoot, y: gRoot
@@ -814,11 +814,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable128
@@ -829,11 +829,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 0.0, deltaY: -1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable128
@@ -844,11 +844,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable96
@@ -859,11 +859,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 0.0, deltaY: -1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable96
@@ -874,11 +874,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable64
@@ -889,11 +889,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 0.0, deltaY: -1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable64
@@ -904,11 +904,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable32
@@ -919,11 +919,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 0.0, deltaY: -1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gScrollable32
@@ -934,9 +934,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gRoot
@@ -947,9 +947,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 0.0, deltaY: -1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: -1 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: null, y: gRoot
@@ -960,11 +960,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable128, y: null
@@ -975,11 +975,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: -1.0, deltaY: 0.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable128.scrollLeft = 0;
         gScrollable128.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable128, y: null
@@ -990,11 +990,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable96, y: null
@@ -1005,11 +1005,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: -1.0, deltaY: 0.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable96, y: null
@@ -1020,11 +1020,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable64, y: null
@@ -1035,11 +1035,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: -1.0, deltaY: 0.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable64, y: null
@@ -1050,11 +1050,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable32, y: null
@@ -1065,11 +1065,11 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: -1.0, deltaY: 0.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable32.scrollLeft = 0;
         gScrollable32.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gScrollable32, y: null
@@ -1080,9 +1080,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gRoot, y: null
@@ -1093,9 +1093,9 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_PAGE,
         deltaX: -1.0, deltaY: 0.0, lineOrPageDeltaX: -1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
       },
-      cleanup: function () {
+      cleanup () {
       },
       expected: {
         x: gRoot, y: null
@@ -1108,14 +1108,14 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.style.overflow = "hidden";
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
         gScrollable64.style.overflow = "auto";
       },
       expected: {
@@ -1127,14 +1127,14 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.style.overflowX = "hidden";
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
         gScrollable64.style.overflow = "auto";
       },
       expected: {
@@ -1146,14 +1146,14 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 1.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.style.overflowY = "hidden";
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
         gScrollable64.style.overflow = "auto";
       },
       expected: {
@@ -1165,14 +1165,14 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.style.overflowX = "hidden";
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
         gScrollable64.style.overflow = "auto";
       },
       expected: {
@@ -1184,14 +1184,14 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 0.0, deltaY: 1.0, lineOrPageDeltaX: 0, lineOrPageDeltaY: 1 },
-      prepare: function () {
+      prepare () {
         gScrollable64.style.overflowY = "hidden";
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
         gScrollable64.style.overflow = "auto";
       },
       expected: {
@@ -1203,14 +1203,14 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable64.style.overflowX = "hidden";
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
         gScrollable64.style.overflow = "auto";
       },
       expected: {
@@ -1222,14 +1222,14 @@ function* doTests()
       event: {
         deltaMode: WheelEvent.DOM_DELTA_LINE,
         deltaX: 1.0, deltaY: 0.0, lineOrPageDeltaX: 1, lineOrPageDeltaY: 0 },
-      prepare: function () {
+      prepare () {
         gScrollable64.style.overflowY = "hidden";
         gScrollable96.scrollLeft = 0;
         gScrollable96.scrollTop = 0;
         gScrollable64.scrollLeft = 0;
         gScrollable64.scrollTop = 0;
       },
-      cleanup: function () {
+      cleanup () {
         gScrollable64.style.overflow = "auto";
       },
       expected: {

dom/events/test/window_wheel_default_action.html

@@ -541,8 +541,8 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: 0, expectedOverflowDeltaY: 0,
                shiftKey: false, ctrlKey: true, altKey: false, metaKey: false, osKey: false },
       expected: kNoScroll,
-      prepare: function (cb) { SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.action", 0]]}, cb); },
-      cleanup: function (cb) { SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.action", 1]]}, cb); } },
+      prepare (cb) { SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.action", 0]]}, cb); },
+      cleanup (cb) { SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.action", 1]]}, cb); } },
 
     // momentum scroll should cause scroll even if the action is history, but if the default action is none,
     // shouldn't do it.
@@ -644,8 +644,8 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: 0, expectedOverflowDeltaY: 0,
                shiftKey: false, ctrlKey: false, altKey: true, metaKey: false, osKey: false },
       expected: kNoScroll,
-      prepare: function (cb) { SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.action", 0]]}, cb); },
-      cleanup: function (cb) { SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.action", 1]]}, cb); } },
+      prepare (cb) { SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.action", 0]]}, cb); },
+      cleanup (cb) { SpecialPowers.pushPrefEnv({"set": [["mousewheel.default.action", 1]]}, cb); } },
 
     // Don't scroll along axis whose overflow style is hidden.
     { description: "Scroll to only bottom by oblique pixel wheel event with overflow-x: hidden",
@@ -655,7 +655,7 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: 1, expectedOverflowDeltaY: 0,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       expected: kScrollDown,
-      prepare: function(cb) { gScrollableElement.style.overflowX = "hidden"; cb(); } },
+      prepare(cb) { gScrollableElement.style.overflowX = "hidden"; cb(); } },
     { description: "Scroll to only bottom by oblique line wheel event with overflow-x: hidden",
       event: { deltaMode: WheelEvent.DOM_DELTA_LINE,
                deltaX: 1.0, deltaY: 1.0, deltaZ: 0.0,
@@ -691,7 +691,7 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: -1, expectedOverflowDeltaY: 0,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       expected: kScrollUp,
-      cleanup: function (cb) { gScrollableElement.style.overflowX = "auto"; cb(); } },
+      cleanup (cb) { gScrollableElement.style.overflowX = "auto"; cb(); } },
     { description: "Scroll to only right by oblique pixel wheel event with overflow-y: hidden",
       event: { deltaMode: WheelEvent.DOM_DELTA_PIXEL,
                deltaX: 16.0, deltaY: 16.0, deltaZ: 0.0,
@@ -699,7 +699,7 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: 0, expectedOverflowDeltaY: 1,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       expected: kScrollRight,
-      prepare: function(cb) { gScrollableElement.style.overflowY = "hidden"; cb(); } },
+      prepare(cb) { gScrollableElement.style.overflowY = "hidden"; cb(); } },
     { description: "Scroll to only right by oblique line wheel event with overflow-y: hidden",
       event: { deltaMode: WheelEvent.DOM_DELTA_LINE,
                deltaX: 1.0, deltaY: 1.0, deltaZ: 0.0,
@@ -735,7 +735,7 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: 0, expectedOverflowDeltaY: -1,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       expected: kScrollLeft,
-      cleanup: function (cb) { gScrollableElement.style.overflowY = "auto"; cb(); } },
+      cleanup (cb) { gScrollableElement.style.overflowY = "auto"; cb(); } },
     { description: "Don't be scrolled by oblique pixel wheel event with overflow: hidden",
       event: { deltaMode: WheelEvent.DOM_DELTA_PIXEL,
                deltaX: 16.0, deltaY: 16.0, deltaZ: 0.0,
@@ -743,7 +743,7 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: 1, expectedOverflowDeltaY: 1,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       expected: kNoScroll,
-      prepare: function(cb) { gScrollableElement.style.overflow = "hidden"; cb(); } },
+      prepare(cb) { gScrollableElement.style.overflow = "hidden"; cb(); } },
     { description: "Don't be scrolled by oblique line wheel event with overflow: hidden",
       event: { deltaMode: WheelEvent.DOM_DELTA_LINE,
                deltaX: 1.0, deltaY: 1.0, deltaZ: 0.0,
@@ -779,7 +779,7 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: -1, expectedOverflowDeltaY: -1,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       expected: kNoScroll,
-      cleanup: function (cb) { gScrollableElement.style.overflow = "auto"; cb(); } },
+      cleanup (cb) { gScrollableElement.style.overflow = "auto"; cb(); } },
 
     // Don't scroll along axis whose overflow style is hidden and overflow delta values should
     // be zero if there is ancestor scrollable element.
@@ -790,7 +790,7 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: 0, expectedOverflowDeltaY: 0,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       expected: kScrollDown,
-      prepare: function(cb) {
+      prepare(cb) {
         gScrollableElement.style.overflowX = "hidden";
         gScrollableElement.style.position = "fixed";
         gScrollableElement.style.top = "30px";
@@ -836,7 +836,7 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: 0, expectedOverflowDeltaY: 0,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       expected: kScrollUp,
-      cleanup: function (cb) { gScrollableElement.style.overflowX = "auto"; cb(); } },
+      cleanup (cb) { gScrollableElement.style.overflowX = "auto"; cb(); } },
     { description: "Scroll to only right by oblique pixel wheel event with overflow-y: hidden (body is scrollable)",
       event: { deltaMode: WheelEvent.DOM_DELTA_PIXEL,
                deltaX: 16.0, deltaY: 16.0, deltaZ: 0.0,
@@ -844,7 +844,7 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: 0, expectedOverflowDeltaY: 0,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       expected: kScrollRight,
-      prepare: function(cb) { gScrollableElement.style.overflowY = "hidden"; cb(); } },
+      prepare(cb) { gScrollableElement.style.overflowY = "hidden"; cb(); } },
     { description: "Scroll to only right by oblique line wheel event with overflow-y: hidden (body is scrollable)",
       event: { deltaMode: WheelEvent.DOM_DELTA_LINE,
                deltaX: 1.0, deltaY: 1.0, deltaZ: 0.0,
@@ -880,7 +880,7 @@ function doTestScroll(aSettings, aCallback)
                expectedOverflowDeltaX: 0, expectedOverflowDeltaY: 0,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       expected: kScrollLeft,
-      cleanup: function (cb) {
+      cleanup (cb) {
         gScrollableElement.style.overflowY = "auto";
         gScrollableElement.style.position = "static";
         gSpacerForBodyElement.style.width = "";
@@ -1414,7 +1414,7 @@ function getFirstWritingModeStyle()
       return false;
     }
   }
-  return {typeIndex: typeIndex, styleIndex: 0};
+  return {typeIndex, styleIndex: 0};
 }
 
 function getNextWritingModeStyle(curStyle)
@@ -1423,7 +1423,7 @@ function getNextWritingModeStyle(curStyle)
   let styleIndex = curStyle.styleIndex + 1;
   while (typeIndex < kWritingModes.length) {
     if (styleIndex < kWritingModes[typeIndex].styles.length) {
-      return {typeIndex: typeIndex, styleIndex: styleIndex};
+      return {typeIndex, styleIndex};
     }
     typeIndex++;
     styleIndex = 0;
@@ -1520,7 +1520,7 @@ function doTestAutoDirScroll2(aSettings, aAutoDirTrait,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       adjusted: false,
       expected: kScrollDown,
-      prepare: function (cb) {
+      prepare (cb) {
                  // Static contents will not start from the topleft side in some
                  // writing modes, for ease of coding, we simply absolutely
                  // position the target to the topleft in every case.
@@ -1869,7 +1869,7 @@ function doTestAutoDirScroll2(aSettings, aAutoDirTrait,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       adjusted: true,
       expected: kAdjustedForDown.result,
-      prepare: function (cb) {
+      prepare (cb) {
                  gScrollableElement.style.overflowX = "auto";
                  gScrollableElement.style.overflowY = "hidden";
                  cb();
@@ -1957,7 +1957,7 @@ function doTestAutoDirScroll2(aSettings, aAutoDirTrait,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       adjusted: false,
       expected: kScrollDown,
-      prepare: function (cb) {
+      prepare (cb) {
                  gScrollableElement.style.overflowX = "hidden";
                  gScrollableElement.style.overflowY = "auto";
                  cb();
@@ -2047,7 +2047,7 @@ function doTestAutoDirScroll2(aSettings, aAutoDirTrait,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       adjusted: true,
       expected: kAdjustedForDown.result,
-      prepare: function (cb) {
+      prepare (cb) {
                  gScrollableElement.style.overflowX = "auto";
                  gScrollableElement.style.overflowY = "hidden";
                  cb();
@@ -2135,7 +2135,7 @@ function doTestAutoDirScroll2(aSettings, aAutoDirTrait,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       adjusted: false,
       expected: kScrollDown,
-      prepare: function (cb) {
+      prepare (cb) {
                  gScrollableElement.style.overflowX = "hidden";
                  gScrollableElement.style.overflowY = "auto";
                  cb();
@@ -2225,7 +2225,7 @@ function doTestAutoDirScroll2(aSettings, aAutoDirTrait,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       adjusted: true,
       expected: kAdjustedForDown.result,
-      prepare: function (cb) {
+      prepare (cb) {
                  gScrollableElement.style.overflowX = "auto";
                  gScrollableElement.style.overflowY = "hidden";
                  cb();
@@ -2313,7 +2313,7 @@ function doTestAutoDirScroll2(aSettings, aAutoDirTrait,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       adjusted: false,
       expected: kScrollDown,
-      prepare: function (cb) {
+      prepare (cb) {
                  gScrollableElement.style.overflowX = "hidden";
                  gScrollableElement.style.overflowY = "auto";
                  cb();
@@ -2385,7 +2385,7 @@ function doTestAutoDirScroll2(aSettings, aAutoDirTrait,
                shiftKey: false, ctrlKey: false, altKey: false, metaKey: false, osKey: false },
       adjusted: true,
       expected: kAdjustedForLeft.result,
-      cleanup: function (cb) {
+      cleanup (cb) {
                  gScrollableElement.style.position = "static";
                  gScrollableElement.style.top = "auto";
                  gScrollableElement.style.left = "auto";
@@ -3009,7 +3009,7 @@ function doTestWholeScroll2(aCallback)
 {
   const kTests = [
     { description: "try whole-scroll to top (line)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },
@@ -3027,7 +3027,7 @@ function doTestWholeScroll2(aCallback)
       expectedScrollLeft: 1000
     },
     { description: "try whole-scroll to bottom (line)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },
@@ -3045,7 +3045,7 @@ function doTestWholeScroll2(aCallback)
       expectedScrollLeft: 1000
     },
     { description: "try whole-scroll to left (line)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },
@@ -3063,7 +3063,7 @@ function doTestWholeScroll2(aCallback)
       expectedScrollLeft: 0
     },
     { description: "try whole-scroll to right (line)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },
@@ -3083,7 +3083,7 @@ function doTestWholeScroll2(aCallback)
 
 
     { description: "try whole-scroll to top (pixel)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },
@@ -3101,7 +3101,7 @@ function doTestWholeScroll2(aCallback)
       expectedScrollLeft: 1000
     },
     { description: "try whole-scroll to bottom (pixel)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },
@@ -3119,7 +3119,7 @@ function doTestWholeScroll2(aCallback)
       expectedScrollLeft: 1000
     },
     { description: "try whole-scroll to left (pixel)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },
@@ -3137,7 +3137,7 @@ function doTestWholeScroll2(aCallback)
       expectedScrollLeft: 0
     },
     { description: "try whole-scroll to right (pixel)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },
@@ -3157,7 +3157,7 @@ function doTestWholeScroll2(aCallback)
 
 
     { description: "try whole-scroll to top (page)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },
@@ -3175,7 +3175,7 @@ function doTestWholeScroll2(aCallback)
       expectedScrollLeft: 1000
     },
     { description: "try whole-scroll to bottom (page)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },
@@ -3193,7 +3193,7 @@ function doTestWholeScroll2(aCallback)
       expectedScrollLeft: 1000
     },
     { description: "try whole-scroll to left (page)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },
@@ -3211,7 +3211,7 @@ function doTestWholeScroll2(aCallback)
       expectedScrollLeft: 0
     },
     { description: "try whole-scroll to right (page)",
-      prepare: function () {
+      prepare () {
         gScrollableElement.scrollTop = 1000;
         gScrollableElement.scrollLeft = 1000;
       },

dom/html/HTMLMenuBuilder.jsm

@@ -34,11 +34,11 @@ HTMLMenuBuilder.prototype = {
   items: {},
   nestedStack: [],
 
-  toJSONString: function() {
+  toJSONString() {
     return JSON.stringify(this.root);
   },
 
-  openContainer: function(aLabel) {
+  openContainer(aLabel) {
     if (!this.currentNode) {
       this.root = {
         type: "menu",
@@ -57,7 +57,7 @@ HTMLMenuBuilder.prototype = {
     }
   },
 
-  addItemFor: function(aElement, aCanLoadIcon) {
+  addItemFor(aElement, aCanLoadIcon) {
     // Since we no longer type check this at the IDL level, make sure we've got
     // the right element type here.
     if (ChromeUtils.getClassName(aElement) !== "HTMLMenuItemElement") {
@@ -96,7 +96,7 @@ HTMLMenuBuilder.prototype = {
     this.items[item.id] = aElement;
   },
 
-  addSeparator: function() {
+  addSeparator() {
     if (!("children" in this.currentNode)) {
       return;
     }
@@ -104,7 +104,7 @@ HTMLMenuBuilder.prototype = {
     this.currentNode.children.push({ type: "separator" });
   },
 
-  undoAddSeparator: function() {
+  undoAddSeparator() {
     if (!("children" in this.currentNode)) {
       return;
     }
@@ -115,13 +115,13 @@ HTMLMenuBuilder.prototype = {
     }
   },
 
-  closeContainer: function() {
+  closeContainer() {
     this.currentNode = this.nestedStack.length
       ? this.nestedStack.pop()
       : this.root;
   },
 
-  click: function(id) {
+  click(id) {
     let item = this.items[id];
     if (item) {
       item.click();

dom/html/test/bug199692-popup.html

@@ -107,7 +107,7 @@ function getCoords(elt)
     y += elt.offsetTop;
   } while ((elt = elt.offsetParent));
 
-  return { x: x, y: y };
+  return { x, y };
 }
 
 var elts = ["txt", "empty", "whitespace", "static", "fixed", "absolute",

dom/html/test/file_iframe_sandbox_c_if1.html

@@ -8,7 +8,7 @@
 </head>
 <script type="text/javascript">
   function ok(result, desc) {
-    window.parent.postMessage({ok: result, desc: desc}, "*");
+    window.parent.postMessage({ok: result, desc}, "*");
   }
 
   function doStuff() {

dom/html/test/file_iframe_sandbox_c_if2.html

@@ -8,7 +8,7 @@
 </head>
 <script type="text/javascript">
   function ok(result, desc) {
-    window.parent.postMessage({ok: result, desc: desc}, "*");
+    window.parent.postMessage({ok: result, desc}, "*");
   }
 
   function doStuff() {

dom/html/test/file_iframe_sandbox_c_if6.html

@@ -10,7 +10,7 @@
 <script type="text/javascript">
   function ok(result, desc) {
     window.parent.ok_wrapper(result, desc);
-    window.parent.postMessage({ok: result, desc: desc}, "*");
+    window.parent.postMessage({ok: result, desc}, "*");
   }
   
   function doStuff() {

dom/html/test/file_iframe_sandbox_c_if7.html

@@ -7,7 +7,7 @@
 </head>
 <script type="text/javascript">
   function ok(result, desc) {
-    window.parent.postMessage({ok: result, desc: desc}, "*");
+    window.parent.postMessage({ok: result, desc}, "*");
   }
 
   function doStuff() {

dom/html/test/file_iframe_sandbox_c_if8.html

@@ -7,7 +7,7 @@
 </head>
 <script type="text/javascript">
   function ok(result, desc) {
-    window.parent.postMessage({ok: result, desc: desc}, "*");
+    window.parent.postMessage({ok: result, desc}, "*");
   }
 
   function doStuff() {

dom/html/test/file_iframe_sandbox_g_if1.html

@@ -8,7 +8,7 @@
 </head>
 <script type="text/javascript">
   function ok(result, desc) {
-    window.parent.postMessage({ok: result, desc: desc}, "*");
+    window.parent.postMessage({ok: result, desc}, "*");
   }
 
   function doStuff() {

dom/html/test/forms/test_input_sanitization.html

@@ -48,7 +48,7 @@ var anyFailedDelayedTests = false;
 function delayed_is(actual, expected, description)
 {
   var result = actual == expected;
-  delayedTests.push({ actual: actual, expected: expected, description: description });
+  delayedTests.push({ actual, expected, description });
   if (!result) {
     anyFailedDelayedTests = true;
   }

dom/html/test/forms/test_option_disabled.html

@@ -43,57 +43,57 @@ var testCases = [
 
   // Dynamic checks: changing disable value.
   { html: "<option></option>",
-    modifier: function(c) { c.querySelector('option').disabled = true; },
+    modifier(c) { c.querySelector('option').disabled = true; },
     result: { attr: "", idl: true, pseudo: true } },
   { html: "<option disabled></option>",
-    modifier: function(c) { c.querySelector('option').disabled = false; },
+    modifier(c) { c.querySelector('option').disabled = false; },
     result: { attr: null, idl: false, pseudo: false } },
   { html: "<optgroup><option></option></otpgroup>",
-    modifier: function(c) { c.querySelector('optgroup').disabled = true; },
+    modifier(c) { c.querySelector('optgroup').disabled = true; },
     result: { attr: null, idl: false, pseudo: true } },
   { html: "<optgroup><option disabled></option></optgroup>",
-    modifier: function(c) { c.querySelector('option').disabled = false; },
+    modifier(c) { c.querySelector('option').disabled = false; },
     result: { attr: null, idl: false, pseudo: false } },
   { html: "<optgroup disabled><option disabled></option></optgroup>",
-    modifier: function(c) { c.querySelector('optgroup').disabled = false; },
+    modifier(c) { c.querySelector('optgroup').disabled = false; },
     result: { attr: "", idl: true, pseudo: true } },
   { html: "<optgroup disabled><option disabled></option></optgroup>",
-    modifier: function(c) { c.querySelector('option').disabled = false; },
+    modifier(c) { c.querySelector('option').disabled = false; },
     result: { attr: null, idl: false, pseudo: true } },
   { html: "<optgroup disabled><option disabled></option></optgroup>",
-    modifier: function(c) { c.querySelector('optgroup').disabled = c.querySelector('option').disabled = false; },
+    modifier(c) { c.querySelector('optgroup').disabled = c.querySelector('option').disabled = false; },
     result: { attr: null, idl: false, pseudo: false } },
   { html: "<optgroup disabled><option></option></optgroup>",
-    modifier: function(c) { c.querySelector('optgroup').disabled = false; },
+    modifier(c) { c.querySelector('optgroup').disabled = false; },
     result: { attr: null, idl: false, pseudo: false } },
   { html: "<optgroup><optgroup disabled><option></option></optgroup></optgroup>",
-    modifier: function(c) { c.querySelector('optgroup[disabled]').disabled = false; },
+    modifier(c) { c.querySelector('optgroup[disabled]').disabled = false; },
     result: { attr: null, idl: false, pseudo: false } },
   { html: "<optgroup disabled><optgroup><option></option></optgroup></optgroup>",
-    modifier: function(c) { c.querySelector('optgroup[disabled]').disabled = false; },
+    modifier(c) { c.querySelector('optgroup[disabled]').disabled = false; },
     result: { attr: null, idl: false, pseudo: false } },
   { html: "<optgroup disabled><optgroup><option disabled></option></optgroup></optgroup>",
-    modifier: function(c) { c.querySelector('optgroup').disabled = false; },
+    modifier(c) { c.querySelector('optgroup').disabled = false; },
     result: { attr: "", idl: true, pseudo: true } },
   { html: "<optgroup disabled><optgroup><option disabled></option></optgroup></optgroup>",
-    modifier: function(c) { c.querySelector('option').disabled = false; },
+    modifier(c) { c.querySelector('option').disabled = false; },
     result: { attr: null, idl: false, pseudo: false } },
   { html: "<optgroup disabled><optgroup><option disabled></option></optgroup></optgroup>",
-    modifier: function(c) { c.querySelector('option').disabled = c.querySelector('option').disabled = false; },
+    modifier(c) { c.querySelector('option').disabled = c.querySelector('option').disabled = false; },
     result: { attr: null, idl: false, pseudo: false } },
 
   // Dynamic checks: moving option element.
   { html: "<optgroup id='a'><option></option></optgroup><optgroup id='b'></optgroup>",
-    modifier: function(c) { c.querySelector('#b').appendChild(c.querySelector('option')); },
+    modifier(c) { c.querySelector('#b').appendChild(c.querySelector('option')); },
     result: { attr: null, idl: false, pseudo: false } },
   { html: "<optgroup id='a'><option disabled></option></optgroup><optgroup id='b'></optgroup>",
-    modifier: function(c) { c.querySelector('#b').appendChild(c.querySelector('option')); },
+    modifier(c) { c.querySelector('#b').appendChild(c.querySelector('option')); },
     result: { attr: "", idl: true, pseudo: true } },
   { html: "<optgroup id='a'><option></option></optgroup><optgroup disabled id='b'></optgroup>",
-    modifier: function(c) { c.querySelector('#b').appendChild(c.querySelector('option')); },
+    modifier(c) { c.querySelector('#b').appendChild(c.querySelector('option')); },
     result: { attr: null, idl: false, pseudo: true } },
   { html: "<optgroup disabled id='a'><option></option></optgroup><optgroup id='b'></optgroup>",
-    modifier: function(c) { c.querySelector('#b').appendChild(c.querySelector('option')); },
+    modifier(c) { c.querySelector('#b').appendChild(c.querySelector('option')); },
     result: { attr: null, idl: false, pseudo: false } },
 ];
 

dom/html/test/forms/test_valueasnumber_attribute.html

@@ -412,7 +412,7 @@ function checkTimeSet()
     // Some NaN values (should set to empty string).
     { value: NaN, result: "" },
     { value: "foobar", result: "" },
-    { value: function() {}, result: "" },
+    { value() {}, result: "" },
     // Inifinity (should throw).
     { value: Infinity, throw: true },
     { value: -Infinity, throw: true },

dom/html/test/head.js

@@ -29,7 +29,7 @@ function promiseWaitForEvent(
 function waitForDocLoadComplete(aBrowser = gBrowser) {
   return new Promise(resolve => {
     let listener = {
-      onStateChange: function(webProgress, req, flags, status) {
+      onStateChange(webProgress, req, flags, status) {
         let docStop =
           Ci.nsIWebProgressListener.STATE_IS_NETWORK |
           Ci.nsIWebProgressListener.STATE_STOP;

dom/html/test/reflect.js

@@ -122,7 +122,7 @@ function reflectString(aParameters) {
     // ES5, verse 8.12.8.
     [
       {
-        toString: function() {
+        toString() {
           return "foo";
         },
       },
@@ -130,7 +130,7 @@ function reflectString(aParameters) {
     ],
     [
       {
-        valueOf: function() {
+        valueOf() {
           return "foo";
         },
       },
@@ -138,7 +138,7 @@ function reflectString(aParameters) {
     ],
     [
       {
-        valueOf: function() {
+        valueOf() {
           return "quux";
         },
         toString: undefined,
@@ -147,10 +147,10 @@ function reflectString(aParameters) {
     ],
     [
       {
-        valueOf: function() {
+        valueOf() {
           return "foo";
         },
-        toString: function() {
+        toString() {
           return "bar";
         },
       },
@@ -681,7 +681,7 @@ function reflectBoolean(aParameters) {
     // ES5, verse 9.2.
     {
       value: {
-        toString: function() {
+        toString() {
           return "foo";
         },
       },
@@ -690,7 +690,7 @@ function reflectBoolean(aParameters) {
     },
     {
       value: {
-        valueOf: function() {
+        valueOf() {
           return "foo";
         },
       },
@@ -699,7 +699,7 @@ function reflectBoolean(aParameters) {
     },
     {
       value: {
-        valueOf: function() {
+        valueOf() {
           return "quux";
         },
         toString: undefined,
@@ -709,10 +709,10 @@ function reflectBoolean(aParameters) {
     },
     {
       value: {
-        valueOf: function() {
+        valueOf() {
           return "foo";
         },
-        toString: function() {
+        toString() {
           return "bar";
         },
       },
@@ -721,7 +721,7 @@ function reflectBoolean(aParameters) {
     },
     {
       value: {
-        valueOf: function() {
+        valueOf() {
           return false;
         },
       },

dom/html/test/test_bug593689.html

@@ -29,7 +29,7 @@ testWidth("xxx");
 testWidth(null);
 testWidth(undefined);
 testWidth({});
-testWidth({ valueOf: function() { return 10; } });
+testWidth({ valueOf() { return 10; } });
 
 function testHeight(h) {
   var img = new Image(100, h);
@@ -42,7 +42,7 @@ testHeight("xxx");
 testHeight(null);
 testHeight(undefined);
 testHeight({});
-testHeight({ valueOf: function() { return 10; } });
+testHeight({ valueOf() { return 10; } });
 
 </script>
 </pre>

dom/html/test/test_fullscreen-api-race.html

@@ -107,7 +107,7 @@ function* testGenerator() {
   for (var openWinFunc of OPEN_WINDOW_FUNCS) {
     for (var actionFunc of ACTION_FUNCS) {
       info(`Testing ${openWinFunc.name}, ${actionFunc.name}`);
-      yield { openWinFunc: openWinFunc, actionFunc: actionFunc };
+      yield { openWinFunc, actionFunc };
     }
   }
 }

dom/media/tests/mochitest/head.js

@@ -126,7 +126,7 @@ AudioStreamAnalyser.prototype = {
    *
    * @returns {array} A Uint8Array containing the frequency domain data.
    */
-  getByteFrequencyData: function() {
+  getByteFrequencyData() {
     this.analyser.getByteFrequencyData(this.data);
     return this.data;
   },
@@ -135,7 +135,7 @@ AudioStreamAnalyser.prototype = {
    * Append a canvas to the DOM where the frequency data are drawn.
    * Useful to debug tests.
    */
-  enableDebugCanvas: function() {
+  enableDebugCanvas() {
     var cvs = (this.debugCanvas = document.createElement("canvas"));
     const content = document.getElementById("content");
     content.insertBefore(cvs, content.children[0]);
@@ -166,7 +166,7 @@ AudioStreamAnalyser.prototype = {
    * Stop drawing of and remove the debug canvas from the DOM if it was
    * previously added.
    */
-  disableDebugCanvas: function() {
+  disableDebugCanvas() {
     if (!this.debugCanvas || !this.debugCanvas.parentElement) {
       return;
     }
@@ -180,7 +180,7 @@ AudioStreamAnalyser.prototype = {
    * Call this to reduce main thread processing, mostly necessary on slow
    * devices.
    */
-  disconnect: function() {
+  disconnect() {
     this.disableDebugCanvas();
     this.sourceNodes.forEach(n => n.disconnect());
     this.sourceNodes = [];
@@ -198,7 +198,7 @@ AudioStreamAnalyser.prototype = {
    * @param {promise} cancel
    *        A promise that on resolving will reject the promise we returned.
    */
-  waitForAnalysisSuccess: async function(
+  async waitForAnalysisSuccess(
     analysisFunction,
     cancel = wait(60000, new Error("Audio analysis timed out"))
   ) {
@@ -223,7 +223,7 @@ AudioStreamAnalyser.prototype = {
    *        The frequency for whicht to return the bin number.
    * @returns {integer} the index of the bin in the FFT array.
    */
-  binIndexForFrequency: function(frequency) {
+  binIndexForFrequency(frequency) {
     return (
       1 +
       Math.round(
@@ -238,7 +238,7 @@ AudioStreamAnalyser.prototype = {
    * @param {integer} index an index in an FFT array
    * @returns {double} the frequency for this bin
    */
-  frequencyForBinIndex: function(index) {
+  frequencyForBinIndex(index) {
     return ((index - 1) * this.audioContext.sampleRate) / this.analyser.fftSize;
   },
 };
@@ -932,7 +932,7 @@ CommandChain.prototype = {
    * Start the command chain.  This returns a promise that always resolves
    * cleanly (this catches errors and fails the test case).
    */
-  execute: function() {
+  execute() {
     return this.commands
       .reduce((prev, next, i) => {
         if (typeof next !== "function" || !next.name) {
@@ -959,7 +959,7 @@ CommandChain.prototype = {
   /**
    * Add new commands to the end of the chain
    */
-  append: function(commands) {
+  append(commands) {
     this.commands = this.commands.concat(commands);
   },
 
@@ -968,7 +968,7 @@ CommandChain.prototype = {
    * @param {occurrence} Optional param specifying which occurrence to match,
    * with 0 representing the first occurrence.
    */
-  indexOf: function(functionOrName, occurrence) {
+  indexOf(functionOrName, occurrence) {
     occurrence = occurrence || 0;
     return this.commands.findIndex(func => {
       if (typeof functionOrName === "string") {
@@ -986,7 +986,7 @@ CommandChain.prototype = {
     });
   },
 
-  mustHaveIndexOf: function(functionOrName, occurrence) {
+  mustHaveIndexOf(functionOrName, occurrence) {
     var index = this.indexOf(functionOrName, occurrence);
     if (index == -1) {
       throw new Error("Unknown test: " + functionOrName);
@@ -997,25 +997,25 @@ CommandChain.prototype = {
   /**
    * Inserts the new commands after the specified command.
    */
-  insertAfter: function(functionOrName, commands, all, occurrence) {
+  insertAfter(functionOrName, commands, all, occurrence) {
     this._insertHelper(functionOrName, commands, 1, all, occurrence);
   },
 
   /**
    * Inserts the new commands after every occurrence of the specified command
    */
-  insertAfterEach: function(functionOrName, commands) {
+  insertAfterEach(functionOrName, commands) {
     this._insertHelper(functionOrName, commands, 1, true);
   },
 
   /**
    * Inserts the new commands before the specified command.
    */
-  insertBefore: function(functionOrName, commands, all, occurrence) {
+  insertBefore(functionOrName, commands, all, occurrence) {
     this._insertHelper(functionOrName, commands, 0, all, occurrence);
   },
 
-  _insertHelper: function(functionOrName, commands, delta, all, occurrence) {
+  _insertHelper(functionOrName, commands, delta, all, occurrence) {
     occurrence = occurrence || 0;
     for (
       var index = this.mustHaveIndexOf(functionOrName, occurrence);
@@ -1036,7 +1036,7 @@ CommandChain.prototype = {
   /**
    * Removes the specified command, returns what was removed.
    */
-  remove: function(functionOrName, occurrence) {
+  remove(functionOrName, occurrence) {
     return this.commands.splice(
       this.mustHaveIndexOf(functionOrName, occurrence),
       1
@@ -1046,7 +1046,7 @@ CommandChain.prototype = {
   /**
    * Removes all commands after the specified one, returns what was removed.
    */
-  removeAfter: function(functionOrName, occurrence) {
+  removeAfter(functionOrName, occurrence) {
     return this.commands.splice(
       this.mustHaveIndexOf(functionOrName, occurrence) + 1
     );
@@ -1055,7 +1055,7 @@ CommandChain.prototype = {
   /**
    * Removes all commands before the specified one, returns what was removed.
    */
-  removeBefore: function(functionOrName, occurrence) {
+  removeBefore(functionOrName, occurrence) {
     return this.commands.splice(
       0,
       this.mustHaveIndexOf(functionOrName, occurrence)
@@ -1065,7 +1065,7 @@ CommandChain.prototype = {
   /**
    * Replaces a single command, returns what was removed.
    */
-  replace: function(functionOrName, commands) {
+  replace(functionOrName, commands) {
     this.insertBefore(functionOrName, commands);
     return this.remove(functionOrName);
   },
@@ -1073,7 +1073,7 @@ CommandChain.prototype = {
   /**
    * Replaces all commands after the specified one, returns what was removed.
    */
-  replaceAfter: function(functionOrName, commands, occurrence) {
+  replaceAfter(functionOrName, commands, occurrence) {
     var oldCommands = this.removeAfter(functionOrName, occurrence);
     this.append(commands);
     return oldCommands;
@@ -1082,7 +1082,7 @@ CommandChain.prototype = {
   /**
    * Replaces all commands before the specified one, returns what was removed.
    */
-  replaceBefore: function(functionOrName, commands) {
+  replaceBefore(functionOrName, commands) {
     var oldCommands = this.removeBefore(functionOrName);
     this.insertBefore(functionOrName, commands);
     return oldCommands;
@@ -1091,7 +1091,7 @@ CommandChain.prototype = {
   /**
    * Remove all commands whose name match the specified regex.
    */
-  filterOut: function(id_match) {
+  filterOut(id_match) {
     this.commands = this.commands.filter(c => !id_match.test(c.name));
   },
 };
@@ -1101,7 +1101,7 @@ function AudioStreamHelper() {
 }
 
 AudioStreamHelper.prototype = {
-  checkAudio: function(stream, analyser, fun) {
+  checkAudio(stream, analyser, fun) {
     /*
     analyser.enableDebugCanvas();
     return analyser.waitForAnalysisSuccess(fun)
@@ -1110,13 +1110,13 @@ AudioStreamHelper.prototype = {
     return analyser.waitForAnalysisSuccess(fun);
   },
 
-  checkAudioFlowing: function(stream) {
+  checkAudioFlowing(stream) {
     var analyser = new AudioStreamAnalyser(this._context, stream);
     var freq = analyser.binIndexForFrequency(TEST_AUDIO_FREQ);
     return this.checkAudio(stream, analyser, array => array[freq] > 200);
   },
 
-  checkAudioNotFlowing: function(stream) {
+  checkAudioNotFlowing(stream) {
     var analyser = new AudioStreamAnalyser(this._context, stream);
     var freq = analyser.binIndexForFrequency(TEST_AUDIO_FREQ);
     return this.checkAudio(stream, analyser, array => array[freq] < 50);

dom/media/tests/mochitest/identity/idp-min.js

@@ -5,7 +5,7 @@
   // This is needed so that we can have a "working" IdP served
   // from two different locations in the tree.
   global.rtcIdentityProvider.register({
-    generateAssertion: function(payload, origin, usernameHint) {
+    generateAssertion(payload, origin, usernameHint) {
       dump("idp: generateAssertion(" + payload + ")\n");
       return Promise.resolve({
         idp: { domain: "example.com", protocol: "idp.js" },
@@ -13,7 +13,7 @@
       });
     },
 
-    validateAssertion: function(assertion, origin) {
+    validateAssertion(assertion, origin) {
       dump("idp: validateAssertion(" + assertion + ")\n");
       return Promise.resolve({
         identity: "user@example.com",

dom/media/tests/mochitest/identity/idp.js

@@ -20,12 +20,12 @@
   }
 
   IDPJS.prototype = {
-    getLogin: function() {
+    getLogin() {
       return fetch(
         "https://example.com/.well-known/idp-proxy/idp.sjs?" + this.id
       ).then(response => response.status === 200);
     },
-    checkLogin: function(result) {
+    checkLogin(result) {
       return this.getLogin().then(loggedIn => {
         if (loggedIn) {
           return result;
@@ -38,7 +38,7 @@
       });
     },
 
-    borkResult: function(result) {
+    borkResult(result) {
       if (instructions.some(is("throw"))) {
         throw new Error("Throwing!");
       }
@@ -55,7 +55,7 @@
       return Promise.resolve(result);
     },
 
-    _selectUsername: function(usernameHint) {
+    _selectUsername(usernameHint) {
       dump("_selectUsername: usernameHint(" + usernameHint + ")\n");
       var username = "someone@" + this.domain;
       if (usernameHint) {
@@ -69,7 +69,7 @@
       return username;
     },
 
-    generateAssertion: function(payload, origin, options) {
+    generateAssertion(payload, origin, options) {
       dump(
         "idp: generateAssertion(" +
           payload +
@@ -95,7 +95,7 @@
       });
     },
 
-    validateAssertion: function(assertion, origin) {
+    validateAssertion(assertion, origin) {
       dump("idp: validateAssertion(" + assertion + ")\n");
       var assertion = JSON.parse(assertion);
       if (instructions.some(is("bad-validate"))) {

dom/media/tests/mochitest/identity/test_idpproxy.html

@@ -18,7 +18,7 @@ var dummyPayload = JSON.stringify({
 
 function test_domain_sandbox() {
   var diabolical = {
-    toString : function() {
+    toString() {
       return 'example.com/path';
     }
   };

dom/media/tests/mochitest/mediaStreamPlayback.js

@@ -31,7 +31,7 @@ MediaStreamPlayback.prototype = {
    * @param {Boolean} isResume specifies if this media element is being resumed
    *                           from a previous run
    */
-  playMedia: function(isResume) {
+  playMedia(isResume) {
     this.startMedia(isResume);
     return this.verifyPlaying()
       .then(() => this.stopTracksForStreamInMediaPlayback())
@@ -45,7 +45,7 @@ MediaStreamPlayback.prototype = {
    * Precondition: The media stream and element should both be actively
    *               being played. All the stream's tracks must be local.
    */
-  stopTracksForStreamInMediaPlayback: function() {
+  stopTracksForStreamInMediaPlayback() {
     var elem = this.mediaElement;
     return Promise.all([
       haveEvent(
@@ -66,7 +66,7 @@ MediaStreamPlayback.prototype = {
    * @param {Boolean} isResume specifies if this media element is being resumed
    *                           from a previous run
    */
-  playMediaWithoutStoppingTracks: function(isResume) {
+  playMediaWithoutStoppingTracks(isResume) {
     this.startMedia(isResume);
     return this.verifyPlaying().then(() => this.detachFromMediaElement());
   },
@@ -77,7 +77,7 @@ MediaStreamPlayback.prototype = {
    * @param {Boolean} isResume specifies if the media element playback
    *                           is being resumed from a previous run
    */
-  startMedia: function(isResume) {
+  startMedia(isResume) {
     // If we're playing media element for the first time, check that time is zero.
     if (!isResume) {
       is(
@@ -100,7 +100,7 @@ MediaStreamPlayback.prototype = {
   /**
    * Verifies that media is playing.
    */
-  verifyPlaying: function() {
+  verifyPlaying() {
     var lastElementTime = this.mediaElement.currentTime;
 
     var mediaTimeProgressed = listenUntil(
@@ -164,7 +164,7 @@ MediaStreamPlayback.prototype = {
    * Precondition: The media stream and element should both be actively
    *               being played.
    */
-  detachFromMediaElement: function() {
+  detachFromMediaElement() {
     this.mediaElement.pause();
     this.mediaElement.srcObject = null;
   },

dom/media/tests/mochitest/nonTrickleIce.js

@@ -4,7 +4,7 @@
 
 function removeTrickleOption(desc) {
   var sdp = desc.sdp.replace(/\r\na=ice-options:trickle\r\n/, "\r\n");
-  return new mozRTCSessionDescription({ type: desc.type, sdp: sdp });
+  return new mozRTCSessionDescription({ type: desc.type, sdp });
 }
 
 function makeOffererNonTrickle(chain) {

dom/media/tests/mochitest/parser_rtp.js

@@ -83,7 +83,7 @@ var ParseRtpPacket = buffer => {
     // |                             ....                              |
     let addExtension = (id, len) =>
       header.extensions.push({
-        id: id,
+        id,
         data: new DataView(buffer, offset, len),
       });
     let extensionId = view.getUint16(offset);
@@ -127,5 +127,5 @@ var ParseRtpPacket = buffer => {
       }
     }
   }
-  return { type: "rtp", header: header, payload: new DataView(buffer, offset) };
+  return { type: "rtp", header, payload: new DataView(buffer, offset) };
 };

dom/media/tests/mochitest/pc.js

@@ -841,7 +841,7 @@ DataChannelWrapper.prototype = {
   /**
    * Close the data channel
    */
-  close: function() {
+  close() {
     info(this + ": Closing channel");
     this._channel.close();
   },
@@ -852,7 +852,7 @@ DataChannelWrapper.prototype = {
    * @param {String|Object} data
    *        Data which has to be sent through the data channel
    */
-  send: function(data) {
+  send(data) {
     info(this + ": Sending data '" + data + "'");
     this._channel.send(data);
   },
@@ -862,7 +862,7 @@ DataChannelWrapper.prototype = {
    *
    * @returns {String} The string representation
    */
-  toString: function() {
+  toString() {
     return (
       "DataChannelWrapper (" + this._pc.label + "_" + this._channel.label + ")"
     );
@@ -974,7 +974,7 @@ PeerConnectionWrapper.prototype = {
    *
    * @returns {sequence<RTCRtpSender>} the senders
    */
-  getSenders: function() {
+  getSenders() {
     return this._pc.getSenders();
   },
 
@@ -983,7 +983,7 @@ PeerConnectionWrapper.prototype = {
    *
    * @returns {sequence<RTCRtpReceiver>} the receivers
    */
-  getReceivers: function() {
+  getReceivers() {
     return this._pc.getReceivers();
   },
 
@@ -1022,7 +1022,7 @@ PeerConnectionWrapper.prototype = {
     return this._pc.iceConnectionState;
   },
 
-  setIdentityProvider: function(provider, options) {
+  setIdentityProvider(provider, options) {
     this._pc.setIdentityProvider(provider, options);
   },
 
@@ -1030,17 +1030,17 @@ PeerConnectionWrapper.prototype = {
     return [this.label, direction].join("_");
   },
 
-  getMediaElementForTrack: function(track, direction) {
+  getMediaElementForTrack(track, direction) {
     var prefix = this.elementPrefix(direction);
     return getMediaElementForTrack(track, prefix);
   },
 
-  createMediaElementForTrack: function(track, direction) {
+  createMediaElementForTrack(track, direction) {
     var prefix = this.elementPrefix(direction);
     return createMediaElementForTrack(track, prefix);
   },
 
-  ensureMediaElement: function(track, direction) {
+  ensureMediaElement(track, direction) {
     var prefix = this.elementPrefix(direction);
     var element = this.getMediaElementForTrack(track, direction);
     if (!element) {
@@ -1059,18 +1059,18 @@ PeerConnectionWrapper.prototype = {
     element.play();
   },
 
-  addSendStream: function(stream) {
+  addSendStream(stream) {
     // The PeerConnection will not necessarily know about this stream
     // automatically, because replaceTrack is not told about any streams the
     // new track might be associated with. Only content really knows.
     this._sendStreams.push(stream);
   },
 
-  getStreamForSendTrack: function(track) {
+  getStreamForSendTrack(track) {
     return this._sendStreams.find(str => str.getTrackById(track.id));
   },
 
-  getStreamForRecvTrack: function(track) {
+  getStreamForRecvTrack(track) {
     return this._pc.getRemoteStreams().find(s => !!s.getTrackById(track.id));
   },
 
@@ -1086,7 +1086,7 @@ PeerConnectionWrapper.prototype = {
    * @param {MediaStream} stream
    *        MediaStream to use as container for `track` on remote side
    */
-  attachLocalTrack: function(track, stream) {
+  attachLocalTrack(track, stream) {
     info("Got a local " + track.kind + " track");
 
     this.expectNegotiationNeeded();
@@ -1119,7 +1119,7 @@ PeerConnectionWrapper.prototype = {
    * @param {MediaStream} stream
    *        Media stream to handle
    */
-  attachLocalStream: function(stream, useAddTransceiver) {
+  attachLocalStream(stream, useAddTransceiver) {
     info("Got local media stream: (" + stream.id + ")");
 
     this.expectNegotiationNeeded();
@@ -1163,7 +1163,7 @@ PeerConnectionWrapper.prototype = {
     return this.observedNegotiationNeeded;
   },
 
-  removeSender: function(index) {
+  removeSender(index) {
     var sender = this._pc.getSenders()[index];
     this.expectedLocalTrackInfo = this.expectedLocalTrackInfo.filter(
       i => i.sender != sender
@@ -1173,7 +1173,7 @@ PeerConnectionWrapper.prototype = {
     return this.observedNegotiationNeeded;
   },
 
-  senderReplaceTrack: function(sender, withTrack, stream) {
+  senderReplaceTrack(sender, withTrack, stream) {
     const info = this.expectedLocalTrackInfo.find(i => i.sender == sender);
     if (!info) {
       return; // replaceTrack on a null track, probably
@@ -1184,7 +1184,7 @@ PeerConnectionWrapper.prototype = {
     return sender.replaceTrack(withTrack);
   },
 
-  getUserMedia: async function(constraints) {
+  async getUserMedia(constraints) {
     var stream = await getUserMedia(constraints);
     if (constraints.audio) {
       stream.getAudioTracks().forEach(track => {
@@ -1217,7 +1217,7 @@ PeerConnectionWrapper.prototype = {
    * @param {array} constraintsList
    *        Array of constraints for GUM calls
    */
-  getAllUserMedia: function(constraintsList) {
+  getAllUserMedia(constraintsList) {
     if (constraintsList.length === 0) {
       info("Skipping GUM: no UserMedia requested");
       return Promise.resolve();
@@ -1229,7 +1229,7 @@ PeerConnectionWrapper.prototype = {
     );
   },
 
-  getAllUserMediaAndAddStreams: async function(constraintsList) {
+  async getAllUserMediaAndAddStreams(constraintsList) {
     var streams = await this.getAllUserMedia(constraintsList);
     if (!streams) {
       return;
@@ -1237,7 +1237,7 @@ PeerConnectionWrapper.prototype = {
     return Promise.all(streams.map(stream => this.attachLocalStream(stream)));
   },
 
-  getAllUserMediaAndAddTransceivers: async function(constraintsList) {
+  async getAllUserMediaAndAddTransceivers(constraintsList) {
     var streams = await this.getAllUserMedia(constraintsList);
     if (!streams) {
       return;
@@ -1251,7 +1251,7 @@ PeerConnectionWrapper.prototype = {
    * Create a new data channel instance.  Also creates a promise called
    * `this.nextDataChannel` that resolves when the next data channel arrives.
    */
-  expectDataChannel: function(message) {
+  expectDataChannel(message) {
     this.nextDataChannel = new Promise(resolve => {
       this.ondatachannel = e => {
         ok(e.channel, message);
@@ -1272,7 +1272,7 @@ PeerConnectionWrapper.prototype = {
    *        Options which get forwarded to nsIPeerConnection.createDataChannel
    * @returns {DataChannelWrapper} The created data channel
    */
-  createDataChannel: function(options) {
+  createDataChannel(options) {
     var label = "channel_" + this.dataChannels.length;
     info(this + ": Create data channel '" + label);
 
@@ -1289,7 +1289,7 @@ PeerConnectionWrapper.prototype = {
   /**
    * Creates an offer and automatically handles the failure case.
    */
-  createOffer: function() {
+  createOffer() {
     return this._pc.createOffer(this.offerOptions).then(offer => {
       info("Got offer: " + JSON.stringify(offer));
       // note: this might get updated through ICE gathering
@@ -1301,7 +1301,7 @@ PeerConnectionWrapper.prototype = {
   /**
    * Creates an answer and automatically handles the failure case.
    */
-  createAnswer: function() {
+  createAnswer() {
     return this._pc.createAnswer().then(answer => {
       info(this + ": Got answer: " + JSON.stringify(answer));
       this._last_answer = answer;
@@ -1315,7 +1315,7 @@ PeerConnectionWrapper.prototype = {
    * @param {object} desc
    *        RTCSessionDescriptionInit for the local description request
    */
-  setLocalDescription: function(desc) {
+  setLocalDescription(desc) {
     this.observedNegotiationNeeded = undefined;
     return this._pc.setLocalDescription(desc).then(() => {
       info(this + ": Successfully set the local description");
@@ -1331,7 +1331,7 @@ PeerConnectionWrapper.prototype = {
    * @returns {Promise}
    *        A promise that resolves to the expected error
    */
-  setLocalDescriptionAndFail: function(desc) {
+  setLocalDescriptionAndFail(desc) {
     return this._pc
       .setLocalDescription(desc)
       .then(
@@ -1349,7 +1349,7 @@ PeerConnectionWrapper.prototype = {
    * @param {object} desc
    *        RTCSessionDescriptionInit for the remote description request
    */
-  setRemoteDescription: function(desc) {
+  setRemoteDescription(desc) {
     this.observedNegotiationNeeded = undefined;
     return this._pc.setRemoteDescription(desc).then(() => {
       info(this + ": Successfully set remote description");
@@ -1372,7 +1372,7 @@ PeerConnectionWrapper.prototype = {
    * @returns {Promise}
    *        a promise that resolve to the returned error
    */
-  setRemoteDescriptionAndFail: function(desc) {
+  setRemoteDescriptionAndFail(desc) {
     return this._pc
       .setRemoteDescription(desc)
       .then(
@@ -1388,7 +1388,7 @@ PeerConnectionWrapper.prototype = {
    * Registers a callback for the signaling state change and
    * appends the new state to an array for logging it later.
    */
-  logSignalingState: function() {
+  logSignalingState() {
     this.signalingStateLog = [this._pc.signalingState];
     this._pc.addEventListener("signalingstatechange", e => {
       var newstate = this._pc.signalingState;
@@ -1415,15 +1415,15 @@ PeerConnectionWrapper.prototype = {
     });
   },
 
-  isTrackOnPC: function(track) {
+  isTrackOnPC(track) {
     return !!this.getStreamForRecvTrack(track);
   },
 
-  allExpectedTracksAreObserved: function(expected, observed) {
+  allExpectedTracksAreObserved(expected, observed) {
     return Object.keys(expected).every(trackId => observed[trackId]);
   },
 
-  setupStreamEventHandlers: function(stream) {
+  setupStreamEventHandlers(stream) {
     const myTrackIds = new Set(stream.getTracks().map(t => t.id));
 
     stream.addEventListener("addtrack", ({ track }) => {
@@ -1472,7 +1472,7 @@ PeerConnectionWrapper.prototype = {
     });
   },
 
-  setupTrackEventHandler: function() {
+  setupTrackEventHandler() {
     this._pc.addEventListener("track", ({ track, streams }) => {
       info(`${this}: 'ontrack' event fired for ${track.id}`);
       ok(this.isTrackOnPC(track), `Found track ${track.id}`);
@@ -1518,7 +1518,7 @@ PeerConnectionWrapper.prototype = {
    * @param {object} candidate
    *        The RTCIceCandidate to be added or stored
    */
-  storeOrAddIceCandidate: function(candidate) {
+  storeOrAddIceCandidate(candidate) {
     this._remote_ice_candidates.push(candidate);
     if (this.signalingState === "closed") {
       info("Received ICE candidate for closed PeerConnection - discarding");
@@ -1544,7 +1544,7 @@ PeerConnectionWrapper.prototype = {
    * Registers a callback for the ICE connection state change and
    * appends the new state to an array for logging it later.
    */
-  logIceConnectionState: function() {
+  logIceConnectionState() {
     this.iceConnectionLog = [this._pc.iceConnectionState];
     this.ice_connection_callbacks.logIceStatus = () => {
       var newstate = this._pc.iceConnectionState;
@@ -1595,7 +1595,7 @@ PeerConnectionWrapper.prototype = {
    * Resets the ICE connected Promise and allows ICE connection state monitoring
    * to go backwards to 'checking'.
    */
-  expectIceChecking: function() {
+  expectIceChecking() {
     this.iceCheckingRestartExpected = true;
     this.iceConnected = new Promise((resolve, reject) => {
       this.iceConnectedResolve = resolve;
@@ -1609,7 +1609,7 @@ PeerConnectionWrapper.prototype = {
    * @returns {Promise}
    *          resolves when connected, rejects on failure
    */
-  waitForIceConnected: function() {
+  waitForIceConnected() {
     return this.iceConnected;
   },
 
@@ -1620,7 +1620,7 @@ PeerConnectionWrapper.prototype = {
    *        A PeerConnectionTest object to which the ice candidates gets
    *        forwarded.
    */
-  setupIceCandidateHandler: function(test, candidateHandler) {
+  setupIceCandidateHandler(test, candidateHandler) {
     candidateHandler = candidateHandler || test.iceCandidateHandler.bind(test);
 
     var resolveEndOfTrickle;
@@ -1661,7 +1661,7 @@ PeerConnectionWrapper.prototype = {
     };
   },
 
-  checkLocalMediaTracks: function() {
+  checkLocalMediaTracks() {
     info(
       `${this}: Checking local tracks ${JSON.stringify(
         this.expectedLocalTrackInfo
@@ -1687,11 +1687,11 @@ PeerConnectionWrapper.prototype = {
   /**
    * Checks that we are getting the media tracks we expect.
    */
-  checkMediaTracks: function() {
+  checkMediaTracks() {
     this.checkLocalMediaTracks();
   },
 
-  checkLocalMsids: function() {
+  checkLocalMsids() {
     const sdp = this.localDescription.sdp;
     const msections = sdputils.getMSections(sdp);
     const expectedStreamIdCounts = new Map();
@@ -1753,7 +1753,7 @@ PeerConnectionWrapper.prototype = {
    * @returns {Promise}
    *        A promise that resolves when media data is flowing.
    */
-  waitForMediaElementFlow: function(element) {
+  waitForMediaElementFlow(element) {
     info("Checking data flow for element: " + element.id);
     is(
       element.ended,
@@ -1849,7 +1849,7 @@ PeerConnectionWrapper.prototype = {
     );
   },
 
-  getExpectedActiveReceiveTracks: function() {
+  getExpectedActiveReceiveTracks() {
     return this._pc
       .getTransceivers()
       .filter(t => {
@@ -1876,7 +1876,7 @@ PeerConnectionWrapper.prototype = {
       .filter(t => t);
   },
 
-  getExpectedSendTracks: function() {
+  getExpectedSendTracks() {
     return this._pc
       .getSenders()
       .map(s => s.track)
@@ -1890,7 +1890,7 @@ PeerConnectionWrapper.prototype = {
    * @returns {Promise}
    *        A promise that resolves when media flows for all elements and tracks
    */
-  waitForMediaFlow: function() {
+  waitForMediaFlow() {
     return Promise.all(
       [].concat(
         this.localMediaElements.map(element =>
@@ -1963,7 +1963,7 @@ PeerConnectionWrapper.prototype = {
    * @returns {Promise}
    *        A promise that resolves when we're receiving the tone/s from |from|.
    */
-  checkReceivingToneFrom: async function(
+  async checkReceivingToneFrom(
     audiocontext,
     from,
     cancel = wait(60000, new Error("Tone not detected"))
@@ -2067,7 +2067,7 @@ PeerConnectionWrapper.prototype = {
   /**
    * Check that stats are present by checking for known stats.
    */
-  getStats: function(selector) {
+  getStats(selector) {
     return this._pc.getStats(selector).then(stats => {
       info(this + ": Got stats: " + JSON.stringify(stats));
       this._last_stats = stats;
@@ -2081,7 +2081,7 @@ PeerConnectionWrapper.prototype = {
    * @param {object} stats
    *        The stats to check from this PeerConnectionWrapper
    */
-  checkStats: function(stats, twoMachines) {
+  checkStats(stats, twoMachines) {
     // Allow for clock drift observed on Windows 7. (Bug 979649)
     const isWin7 = navigator.userAgent.includes("Windows NT 6.1");
     const clockDriftAllowanceMs = isWin7 ? 1000 : 250;
@@ -2231,7 +2231,7 @@ PeerConnectionWrapper.prototype = {
    * @param {object} stats
    *        The stats to be verified for relayed vs. direct connection.
    */
-  checkStatsIceConnectionType: function(stats, expectedLocalCandidateType) {
+  checkStatsIceConnectionType(stats, expectedLocalCandidateType) {
     let lId;
     let rId;
     for (let stat of stats.values()) {
@@ -2299,7 +2299,7 @@ PeerConnectionWrapper.prototype = {
    * @param {object} testOptions
    *        The test options object from the PeerConnectionTest
    */
-  checkStatsIceConnections: function(stats, testOptions) {
+  checkStatsIceConnections(stats, testOptions) {
     var numIceConnections = 0;
     stats.forEach(stat => {
       if (stat.type === "candidate-pair" && stat.selected) {
@@ -2359,7 +2359,7 @@ PeerConnectionWrapper.prototype = {
     }
   },
 
-  expectNegotiationNeeded: function() {
+  expectNegotiationNeeded() {
     if (!this.observedNegotiationNeeded) {
       this.observedNegotiationNeeded = new Promise(resolve => {
         this.onnegotiationneeded = resolve;
@@ -2376,7 +2376,7 @@ PeerConnectionWrapper.prototype = {
    *        The properties to look for
    * @returns {boolean} Whether an entry containing all match-props was found.
    */
-  hasStat: function(stats, props) {
+  hasStat(stats, props) {
     for (let res of stats.values()) {
       var match = true;
       for (let prop in props) {
@@ -2395,7 +2395,7 @@ PeerConnectionWrapper.prototype = {
   /**
    * Closes the connection
    */
-  close: function() {
+  close() {
     this._pc.close();
     this.localMediaElements.forEach(e => e.pause());
     info(this + ": Closed connection.");
@@ -2406,7 +2406,7 @@ PeerConnectionWrapper.prototype = {
    *
    * @returns {String} The string representation
    */
-  toString: function() {
+  toString() {
     return "PeerConnectionWrapper (" + this.label + ")";
   },
 };

dom/media/tests/mochitest/sdpUtils.js

@@ -6,7 +6,7 @@ var sdputils = {
   // Finds the codec id / payload type given a codec format
   // (e.g., "VP8", "VP9/90000"). `offset` tells us which one to use in case of
   // multiple matches.
-  findCodecId: function(sdp, format, offset = 0) {
+  findCodecId(sdp, format, offset = 0) {
     let regex = new RegExp("rtpmap:([0-9]+) " + format, "gi");
     let match;
     for (let i = 0; i <= offset; ++i) {
@@ -32,7 +32,7 @@ var sdputils = {
   // Finds all the extmap ids in the given sdp.  Note that this does NOT
   // consider m-sections, so a more generic version would need to
   // look at each m-section separately.
-  findExtmapIds: function(sdp) {
+  findExtmapIds(sdp) {
     var sdpExtmapIds = [];
     extmapRegEx = /^a=extmap:([0-9+])/gm;
     // must call exec on the regex to get each match in the string
@@ -45,7 +45,7 @@ var sdputils = {
     return sdpExtmapIds;
   },
 
-  findExtmapIdsUrnsDirections: function(sdp) {
+  findExtmapIdsUrnsDirections(sdp) {
     var sdpExtmap = [];
     extmapRegEx = /^a=extmap:([0-9+])([A-Za-z/]*) ([A-Za-z0-9_:\-\/\.]+)/gm;
     // must call exec on the regex to get each match in the string
@@ -62,7 +62,7 @@ var sdputils = {
     return sdpExtmap;
   },
 
-  verify_unique_extmap_ids: function(sdp) {
+  verify_unique_extmap_ids(sdp) {
     const sdpExtmapIds = sdputils.findExtmapIdsUrnsDirections(sdp);
 
     return sdpExtmapIds.reduce(function(result, item, index) {
@@ -76,26 +76,26 @@ var sdputils = {
     }, {});
   },
 
-  getMSections: function(sdp) {
+  getMSections(sdp) {
     return sdp
       .split(new RegExp("^m=", "gm"))
       .slice(1)
       .map(s => "m=" + s);
   },
 
-  getAudioMSections: function(sdp) {
+  getAudioMSections(sdp) {
     return this.getMSections(sdp).filter(section =>
       section.startsWith("m=audio")
     );
   },
 
-  getVideoMSections: function(sdp) {
+  getVideoMSections(sdp) {
     return this.getMSections(sdp).filter(section =>
       section.startsWith("m=video")
     );
   },
 
-  checkSdpAfterEndOfTrickle: function(description, testOptions, label) {
+  checkSdpAfterEndOfTrickle(description, testOptions, label) {
     info("EOC-SDP: " + JSON.stringify(description));
 
     const checkForTransportAttributes = msection => {
@@ -155,7 +155,7 @@ var sdputils = {
 
   // Note, we don't bother removing the fmtp lines, which makes a good test
   // for some SDP parsing issues.
-  removeCodec: function(sdp, codec) {
+  removeCodec(sdp, codec) {
     var updated_sdp = sdp.replace(
       new RegExp("a=rtpmap:" + codec + ".*\\/90000\\r\\n", ""),
       ""
@@ -179,59 +179,59 @@ var sdputils = {
     return updated_sdp;
   },
 
-  removeAllButPayloadType: function(sdp, pt) {
+  removeAllButPayloadType(sdp, pt) {
     return sdp.replace(
       new RegExp("m=(\\w+ \\w+) UDP/TLS/RTP/SAVPF .*" + pt + ".*\\r\\n", "gi"),
       "m=$1 UDP/TLS/RTP/SAVPF " + pt + "\r\n"
     );
   },
 
-  removeRtpMapForPayloadType: function(sdp, pt) {
+  removeRtpMapForPayloadType(sdp, pt) {
     return sdp.replace(new RegExp("a=rtpmap:" + pt + ".*\\r\\n", "gi"), "");
   },
 
-  removeRtcpMux: function(sdp) {
+  removeRtcpMux(sdp) {
     return sdp.replace(/a=rtcp-mux\r\n/g, "");
   },
 
-  removeSSRCs: function(sdp) {
+  removeSSRCs(sdp) {
     return sdp.replace(/a=ssrc.*\r\n/g, "");
   },
 
-  removeBundle: function(sdp) {
+  removeBundle(sdp) {
     return sdp.replace(/a=group:BUNDLE .*\r\n/g, "");
   },
 
-  reduceAudioMLineToPcmuPcma: function(sdp) {
+  reduceAudioMLineToPcmuPcma(sdp) {
     return sdp.replace(
       /m=audio .*\r\n/g,
       "m=audio 9 UDP/TLS/RTP/SAVPF 0 8\r\n"
     );
   },
 
-  setAllMsectionsInactive: function(sdp) {
+  setAllMsectionsInactive(sdp) {
     return sdp
       .replace(/\r\na=sendrecv/g, "\r\na=inactive")
       .replace(/\r\na=sendonly/g, "\r\na=inactive")
       .replace(/\r\na=recvonly/g, "\r\na=inactive");
   },
 
-  removeAllRtpMaps: function(sdp) {
+  removeAllRtpMaps(sdp) {
     return sdp.replace(/a=rtpmap:.*\r\n/g, "");
   },
 
-  reduceAudioMLineToDynamicPtAndOpus: function(sdp) {
+  reduceAudioMLineToDynamicPtAndOpus(sdp) {
     return sdp.replace(
       /m=audio .*\r\n/g,
       "m=audio 9 UDP/TLS/RTP/SAVPF 101 109\r\n"
     );
   },
 
-  addTiasBps: function(sdp, bps) {
+  addTiasBps(sdp, bps) {
     return sdp.replace(/c=IN (.*)\r\n/g, "c=IN $1\r\nb=TIAS:" + bps + "\r\n");
   },
 
-  removeSimulcastProperties: function(sdp) {
+  removeSimulcastProperties(sdp) {
     return sdp
       .replace(/a=simulcast:.*\r\n/g, "")
       .replace(/a=rid:.*\r\n/g, "")
@@ -241,7 +241,7 @@ var sdputils = {
       );
   },
 
-  transferSimulcastProperties: function(offer_sdp, answer_sdp) {
+  transferSimulcastProperties(offer_sdp, answer_sdp) {
     if (!offer_sdp.includes("a=simulcast:")) {
       return answer_sdp;
     }
@@ -269,7 +269,7 @@ var sdputils = {
     return new_answer_sdp;
   },
 
-  verifySdp: function(
+  verifySdp(
     desc,
     expectedType,
     offerConstraintsList,
@@ -365,7 +365,7 @@ var sdputils = {
    * @param constraints
    *        The contraint to be examined.
    */
-  countTracksInConstraint: function(type, constraints) {
+  countTracksInConstraint(type, constraints) {
     if (!Array.isArray(constraints)) {
       return 0;
     }

dom/media/webaudio/test/test_analyserNodeOutput.html

@@ -13,7 +13,7 @@
 var gTest = {
   length: 2048,
   numberOfChannels: 1,
-  createGraph: function(context) {
+  createGraph(context) {
     var source = context.createBufferSource();
 
     var analyser = context.createAnalyser();
@@ -25,7 +25,7 @@ var gTest = {
     source.start(0);
     return analyser;
   },
-  createExpectedBuffers: function(context) {
+  createExpectedBuffers(context) {
     this.buffer = context.createBuffer(1, 2048, context.sampleRate);
     for (var i = 0; i < 2048; ++i) {
       this.buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);

dom/media/webaudio/test/test_analyserNodePassThrough.html

@@ -13,7 +13,7 @@
 var gTest = {
   length: 2048,
   numberOfChannels: 1,
-  createGraph: function(context) {
+  createGraph(context) {
     var source = context.createBufferSource();
 
     var analyser = context.createAnalyser();
@@ -29,7 +29,7 @@ var gTest = {
     source.start(0);
     return analyser;
   },
-  createExpectedBuffers: function(context) {
+  createExpectedBuffers(context) {
     this.buffer = context.createBuffer(1, 2048, context.sampleRate);
     for (var i = 0; i < 2048; ++i) {
       this.buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);

dom/media/webaudio/test/test_audioBufferSourceNode.html

@@ -12,7 +12,7 @@
 
 var gTest = {
   length: 4096,
-  createGraph: function(context) {
+  createGraph(context) {
     var buffer = context.createBuffer(1, 2048, context.sampleRate);
     for (var i = 0; i < 2048; ++i) {
       buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
@@ -23,7 +23,7 @@ var gTest = {
     source.buffer = buffer;
     return source;
   },
-  createExpectedBuffers: function(context) {
+  createExpectedBuffers(context) {
     var buffers = [];
     var buffer = context.createBuffer(2, 2048, context.sampleRate);
     for (var i = 0; i < 2048; ++i) {

dom/media/webaudio/test/test_audioBufferSourceNodeDetached.html

@@ -27,7 +27,7 @@ var worker = new Worker("audioBufferSourceNodeDetached_worker.js");
 var gTest = {
   length: 2048,
   numberOfChannels: 1,
-  createGraph: function(context) {
+  createGraph(context) {
     var buffer = context.createBuffer(1, 10000000, context.sampleRate);
     var data = buffer.getChannelData(0);
     for (var i = 0; i < data.length; ++i) {

dom/media/webaudio/test/test_audioBufferSourceNodeLazyLoopParam.html

@@ -13,7 +13,7 @@
 var gTest = {
   length: 4096,
   numberOfChannels: 1,
-  createGraph: function(context) {
+  createGraph(context) {
     // silence for half of the buffer, ones after that.
     var buffer = context.createBuffer(1, 2048, context.sampleRate);
     for (var i = 1024; i < 2048; i++) {
@@ -30,7 +30,7 @@ var gTest = {
     source.start(0, 1024 / context.sampleRate, 1024 / context.sampleRate);
     return source;
   },
-  createExpectedBuffers: function(context) {
+  createExpectedBuffers(context) {
     var expectedBuffer = context.createBuffer(1, 4096, context.sampleRate);
     for (var i = 0; i < 4096; i++) {
       expectedBuffer.getChannelData(0)[i] = 1;

dom/media/webaudio/test/test_audioBufferSourceNodeLoop.html

@@ -13,7 +13,7 @@
 var gTest = {
   length: 2048 * 4,
   numberOfChannels: 1,
-  createGraph: function(context) {
+  createGraph(context) {
     var buffer = context.createBuffer(1, 2048, context.sampleRate);
     for (var i = 0; i < 2048; ++i) {
       buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
@@ -26,7 +26,7 @@ var gTest = {
     source.loop = true;
     return source;
   },
-  createExpectedBuffers: function(context) {
+  createExpectedBuffers(context) {
     var expectedBuffer = context.createBuffer(1, 2048 * 4, context.sampleRate);
     for (var i = 0; i < 4; ++i) {
       for (var j = 0; j < 2048; ++j) {

dom/media/webaudio/test/test_audioBufferSourceNodeLoopStartEnd.html

@@ -13,17 +13,17 @@
 var gTest = {
   length: 2048 * 4,
   numberOfChannels: 1,
-  createGraph: function(context) {
+  createGraph(context) {
     var buffer = context.createBuffer(1, 2048, context.sampleRate);
     for (var i = 0; i < 2048; ++i) {
       buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
     }
 
-    var source = new AudioBufferSourceNode(context, {buffer: buffer, loop: true, loopStart: buffer.duration * 0.25, loopEnd: buffer.duration * 0.75 });
+    var source = new AudioBufferSourceNode(context, {buffer, loop: true, loopStart: buffer.duration * 0.25, loopEnd: buffer.duration * 0.75 });
     source.start(0);
     return source;
   },
-  createExpectedBuffers: function(context) {
+  createExpectedBuffers(context) {
     var expectedBuffer = context.createBuffer(1, 2048 * 4, context.sampleRate);
     for (var i = 0; i < 1536; ++i) {
       expectedBuffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);

dom/media/webaudio/test/test_audioBufferSourceNodeLoopStartEndSame.html

@@ -13,7 +13,7 @@
 var gTest = {
   length: 2048,
   numberOfChannels: 1,
-  createGraph: function(context) {
+  createGraph(context) {
     var buffer = context.createBuffer(1, 2048, context.sampleRate);
     for (var i = 0; i < 2048; ++i) {
       buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
@@ -27,7 +27,7 @@ var gTest = {
     source.start(0);
     return source;
   },
-  createExpectedBuffers: function(context) {
+  createExpectedBuffers(context) {
     var buffer = context.createBuffer(1, 2048, context.sampleRate);
     for (var i = 0; i < 2048; ++i) {
       buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);

dom/media/webaudio/test/test_audioBufferSourceNodeNoStart.html

@@ -13,7 +13,7 @@
 var gTest = {
   length: 2048,
   numberOfChannels: 1,
-  createGraph: function(context) {
+  createGraph(context) {
     var buffer = context.createBuffer(1, 2048, context.sampleRate);
     var data = buffer.getChannelData(0);
     for (var i = 0; i < data.length; ++i) {

dom/media/webaudio/test/test_audioBufferSourceNodeNullBuffer.html

@@ -13,7 +13,7 @@
 var gTest = {
   length: 2048,
   numberOfChannels: 1,
-  createGraph: function(context) {
+  createGraph(context) {
     var source = context.createBufferSource();
 
     source.start(0);

dom/media/webaudio/test/test_audioBufferSourceNodePassThrough.html

@@ -13,7 +13,7 @@
 var gTest = {
   length: 2048,
   numberOfChannels: 1,
-  createGraph: function(context) {
+  createGraph(context) {
     var buffer = context.createBuffer(1, 2048, context.sampleRate);
     for (var i = 0; i < 2048; ++i) {
       buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
@@ -30,7 +30,7 @@ var gTest = {
     source.start(0);
     return source;
   },
-  createExpectedBuffers: function(context) {
+  createExpectedBuffers(context) {
     var expectedBuffer = context.createBuffer(1, 2048, context.sampleRate);
 
     return [expectedBuffer];

dom/media/webaudio/test/test_audioParamExponentialRamp.html

@@ -17,7 +17,7 @@ var T0 = 0;
 var gTest = {
   length: 2048,
   numberOfChannels: 1,
-  createGraph: function(context) {
+  createGraph(context) {
     var sourceBuffer = context.createBuffer(1, 2048, context.sampleRate);
     for (var i = 0; i < 2048; ++i) {
       sourceBuffer.getChannelData(0)[i] = 1;
@@ -35,7 +35,7 @@ var gTest = {
     source.start(0);
     return gain;
   },
-  createExpectedBuffers: function(context) {
+  createExpectedBuffers(context) {
     var T1 = 2048 / context.sampleRate;
     var expectedBuffer = context.createBuffer(1, 2048, context.sampleRate);
     for (var i = 0; i < 2048; ++i) {