Bug 1873189 - Port bug 1845586 - Replace PromiseUtils.defer with Promise.withResolvers. r=aleca

Differential Revision: https://phabricator.services.mozilla.com/D197777

--HG--
extra : moz-landing-system : lando

calendar/base/content/widgets/calendar-filter.js

@@ -1027,7 +1027,7 @@ let CalendarFilteredViewMixin = Base =>
      *
      * @type {object}
      */
-    #deferred = PromiseUtils.defer();
+    #deferred = Promise.withResolvers();
 
     /**
      * Any async iterator currently reading from a calendar.
@@ -1232,7 +1232,7 @@ let CalendarFilteredViewMixin = Base =>
         // If a previous refresh completed, start a new Promise that resolves when the next refresh
         // completes. Otherwise, continue with the current Promise.
         // If #currentRefresh is completed, #deferred is already resolved, so we can safely discard it.
-        this.#deferred = PromiseUtils.defer();
+        this.#deferred = Promise.withResolvers();
       }
       this.#currentRefresh = null;
     }

calendar/test/browser/providers/browser_caldavCalendar_cached.js

@@ -14,7 +14,7 @@ add_setup(async function () {
     loginInfo.init(CalDAVServer.origin, null, "test", "bob", "bob", "", "");
     await Services.logins.addLoginAsync(loginInfo);
   }
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   calendar = createCalendar("caldav", CalDAVServer.url, true);
   await calendarObserver._onLoadPromise.promise;
   info("calendar set-up complete");

calendar/test/browser/providers/browser_caldavCalendar_uncached.js

@@ -14,7 +14,7 @@ add_setup(async function () {
     loginInfo.init(CalDAVServer.origin, null, "test", "bob", "bob", "", "");
     await Services.logins.addLoginAsync(loginInfo);
   }
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   calendar = createCalendar("caldav", CalDAVServer.url, false);
   await calendarObserver._onLoadPromise.promise;
   info("calendar set-up complete");

calendar/test/browser/providers/browser_icsCalendar_cached.js

@@ -21,7 +21,7 @@ add_setup(async function () {
   // Remove the next line when this is fixed.
   calendarObserver._batchRequired = false;
 
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   calendar = createCalendar("ics", ICSServer.url, true);
   await calendarObserver._onLoadPromise.promise;
   info("calendar set-up complete");

calendar/test/browser/providers/browser_icsCalendar_uncached.js

@@ -14,7 +14,7 @@ add_setup(async function () {
     loginInfo.init(ICSServer.origin, null, "test", "bob", "bob", "", "");
     await Services.logins.addLoginAsync(loginInfo);
   }
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   calendar = createCalendar("ics", ICSServer.url, false);
   await calendarObserver._onLoadPromise.promise;
   info("calendar set-up complete");

calendar/test/unit/providers/head.js

@@ -111,8 +111,8 @@ async function runAddItem(calendar) {
   event.startDate = cal.createDateTime("20200303T205500Z");
   event.endDate = cal.createDateTime("20200303T210200Z");
 
-  calendarObserver._onAddItemPromise = PromiseUtils.defer();
-  calendarObserver._onModifyItemPromise = PromiseUtils.defer();
+  calendarObserver._onAddItemPromise = Promise.withResolvers();
+  calendarObserver._onModifyItemPromise = Promise.withResolvers();
   await calendar.addItem(event);
   await Promise.any([
     calendarObserver._onAddItemPromise.promise,
@@ -133,7 +133,7 @@ async function runModifyItem(calendar) {
   const clone = event.clone();
   clone.title = "Modified event";
 
-  calendarObserver._onModifyItemPromise = PromiseUtils.defer();
+  calendarObserver._onModifyItemPromise = Promise.withResolvers();
   await calendar.modifyItem(clone, event);
   await calendarObserver._onModifyItemPromise.promise;
 }
@@ -146,7 +146,7 @@ async function runModifyItem(calendar) {
 async function runDeleteItem(calendar) {
   const event = await calendar.getItem("6b7dd6f6-d6f0-4e93-a953-bb5473c4c47a");
 
-  calendarObserver._onDeleteItemPromise = PromiseUtils.defer();
+  calendarObserver._onDeleteItemPromise = Promise.withResolvers();
   await calendar.deleteItem(event);
   await calendarObserver._onDeleteItemPromise.promise;
 }

calendar/test/unit/providers/test_caldavCalendar_cached.js

@@ -23,8 +23,8 @@ add_setup(async function () {
 registerCleanupFunction(() => CalDAVServer.close());
 
 add_task(async function () {
-  calendarObserver._onAddItemPromise = PromiseUtils.defer();
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onAddItemPromise = Promise.withResolvers();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   const calendar = createCalendar("caldav", CalDAVServer.url, true);
   await calendarObserver._onAddItemPromise.promise;
   await calendarObserver._onLoadPromise.promise;
@@ -34,12 +34,12 @@ add_task(async function () {
 
   info("creating the item");
   calendarObserver._batchRequired = true;
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   await runAddItem(calendar);
   await calendarObserver._onLoadPromise.promise;
 
   info("modifying the item");
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   await runModifyItem(calendar);
   await calendarObserver._onLoadPromise.promise;
 
@@ -55,7 +55,7 @@ add_task(async function () {
  */
 add_task(async function testCalendarWithNoPrivSupport() {
   CalDAVServer.privileges = null;
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
 
   const calendar = createCalendar("caldav", CalDAVServer.url, true);
   await calendarObserver._onLoadPromise.promise;
@@ -100,8 +100,8 @@ add_task(async function testModifyItemWithNoChanges() {
  * items from the local calendar.
  */
 add_task(async function testSyncError1() {
-  calendarObserver._onAddItemPromise = PromiseUtils.defer();
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onAddItemPromise = Promise.withResolvers();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   const calendar = createCalendar("caldav", CalDAVServer.url, true);
   await calendarObserver._onAddItemPromise.promise;
   await calendarObserver._onLoadPromise.promise;
@@ -114,7 +114,7 @@ add_task(async function testSyncError1() {
 
   info("syncing with rate limit error");
   CalDAVServer.throwRateLimitErrors = true;
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   calendar.refresh();
   await calendarObserver._onLoadPromise.promise;
   CalDAVServer.throwRateLimitErrors = false;
@@ -132,7 +132,7 @@ add_task(async function testSyncError1() {
   );
 
   info("syncing without rate limit error");
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   calendar.refresh();
   await calendarObserver._onLoadPromise.promise;
   info("sync without rate limit error complete");
@@ -171,8 +171,8 @@ add_task(async function testSyncError2() {
     );
   }
 
-  calendarObserver._onAddItemPromise = PromiseUtils.defer();
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onAddItemPromise = Promise.withResolvers();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   const calendar = createCalendar("caldav", CalDAVServer.url, true);
   await calendarObserver._onAddItemPromise.promise;
   await calendarObserver._onLoadPromise.promise;
@@ -184,7 +184,7 @@ add_task(async function testSyncError2() {
   info("forced syncing with multiple pages");
   calendar.wrappedJSObject.mUncachedCalendar.wrappedJSObject.mWebdavSyncToken = null;
   calendar.wrappedJSObject.mUncachedCalendar.wrappedJSObject.saveCalendarProperties();
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   calendar.refresh();
   await calendarObserver._onLoadPromise.promise;
   info("forced sync with multiple pages complete");

calendar/test/unit/providers/test_caldavCalendar_uncached.js

@@ -23,8 +23,8 @@ add_setup(async function () {
 registerCleanupFunction(() => CalDAVServer.close());
 
 add_task(async function () {
-  calendarObserver._onAddItemPromise = PromiseUtils.defer();
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onAddItemPromise = Promise.withResolvers();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   const calendar = createCalendar("caldav", CalDAVServer.url, false);
   await calendarObserver._onAddItemPromise.promise;
   await calendarObserver._onLoadPromise.promise;
@@ -34,12 +34,12 @@ add_task(async function () {
 
   info("creating the item");
   calendarObserver._batchRequired = true;
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   await runAddItem(calendar);
   await calendarObserver._onLoadPromise.promise;
 
   info("modifying the item");
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   await runModifyItem(calendar);
   await calendarObserver._onLoadPromise.promise;
 
@@ -55,7 +55,7 @@ add_task(async function () {
  */
 add_task(async function testCalendarWithNoPrivSupport() {
   CalDAVServer.privileges = null;
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
 
   const calendar = createCalendar("caldav", CalDAVServer.url, false);
   await calendarObserver._onLoadPromise.promise;

calendar/test/unit/providers/test_icsCalendar_cached.js

@@ -27,8 +27,8 @@ add_task(async function () {
   // Remove the next line when this is fixed.
   calendarObserver._batchRequired = false;
 
-  calendarObserver._onAddItemPromise = PromiseUtils.defer();
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onAddItemPromise = Promise.withResolvers();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   const calendar = createCalendar("ics", ICSServer.url, true);
   await calendarObserver._onAddItemPromise.promise;
   await calendarObserver._onLoadPromise.promise;
@@ -37,17 +37,17 @@ add_task(async function () {
   Assert.ok(await calendar.getItem("5a9fa76c-93f3-4ad8-9f00-9e52aedd2821"));
 
   info("creating the item");
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   await runAddItem(calendar);
   await calendarObserver._onLoadPromise.promise;
 
   info("modifying the item");
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   await runModifyItem(calendar);
   await calendarObserver._onLoadPromise.promise;
 
   info("deleting the item");
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   await runDeleteItem(calendar);
   await calendarObserver._onLoadPromise.promise;
 });

calendar/test/unit/providers/test_icsCalendar_uncached.js

@@ -20,8 +20,8 @@ ICSServer.putICSInternal(
 registerCleanupFunction(() => ICSServer.close());
 
 add_task(async function () {
-  calendarObserver._onAddItemPromise = PromiseUtils.defer();
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onAddItemPromise = Promise.withResolvers();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   const calendar = createCalendar("ics", ICSServer.url, false);
   await calendarObserver._onAddItemPromise.promise;
   await calendarObserver._onLoadPromise.promise;
@@ -30,17 +30,17 @@ add_task(async function () {
   Assert.ok(await calendar.getItem("5a9fa76c-93f3-4ad8-9f00-9e52aedd2821"));
 
   info("creating the item");
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   await runAddItem(calendar);
   await calendarObserver._onLoadPromise.promise;
 
   info("modifying the item");
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   await runModifyItem(calendar);
   await calendarObserver._onLoadPromise.promise;
 
   info("deleting the item");
-  calendarObserver._onLoadPromise = PromiseUtils.defer();
+  calendarObserver._onLoadPromise = Promise.withResolvers();
   await runDeleteItem(calendar);
   await calendarObserver._onLoadPromise.promise;
 });

mail/base/test/browser/browser_linkHandler.js

@@ -84,7 +84,7 @@ const webProgressListener = {
       Ci.nsIWebProgress.NOTIFY_STATE_ALL | Ci.nsIWebProgress.NOTIFY_LOCATION
     );
 
-    this._deferred = PromiseUtils.defer();
+    this._deferred = Promise.withResolvers();
     return this._deferred.promise;
   },
 
@@ -114,7 +114,7 @@ const mockExternalProtocolService = {
   },
 
   promiseEvent() {
-    this._deferred = PromiseUtils.defer();
+    this._deferred = Promise.withResolvers();
     return this._deferred.promise;
   },
 

mail/base/test/browser/browser_mailContext_messageContent.js

@@ -501,7 +501,7 @@ const mockExternalProtocolService = {
   },
 
   promiseEvent() {
-    this._deferred = PromiseUtils.defer();
+    this._deferred = Promise.withResolvers();
     return this._deferred.promise;
   },
 

mail/base/test/unit/test_alertHook.js

@@ -102,7 +102,7 @@ class MockAlertsService {
   QueryInterface = ChromeUtils.generateQI(["nsIAlertsService"]);
 
   constructor() {
-    this._deferredPromise = PromiseUtils.defer();
+    this._deferredPromise = Promise.withResolvers();
   }
 
   showAlert() {
@@ -110,7 +110,7 @@ class MockAlertsService {
   }
 
   deferPromise() {
-    this._deferredPromise = PromiseUtils.defer();
+    this._deferredPromise = Promise.withResolvers();
   }
 
   get promise() {

mail/components/addrbook/test/browser/browser_edit_async.js

@@ -79,7 +79,7 @@ add_task(async function testCreateCard() {
   // Saving the contact will get an immediate notification.
   // Delay the server response so we can test the state of the UI.
   const promise1 = TestUtils.topicObserved("addrbook-contact-created");
-  CardDAVServer.responseDelay = PromiseUtils.defer();
+  CardDAVServer.responseDelay = Promise.withResolvers();
   EventUtils.synthesizeMouseAtCenter(saveEditButton, {}, abWindow);
   await promise1;
   await notInEditingMode();
@@ -105,7 +105,7 @@ add_task(async function testCreateCard() {
   // Saving the contact will get an immediate notification.
   // Delay the server response so we can test the state of the UI.
   const promise3 = TestUtils.topicObserved("addrbook-contact-updated");
-  CardDAVServer.responseDelay = PromiseUtils.defer();
+  CardDAVServer.responseDelay = Promise.withResolvers();
   EventUtils.synthesizeMouseAtCenter(saveEditButton, {}, abWindow);
   await promise3;
   await notInEditingMode();
@@ -129,7 +129,7 @@ add_task(async function testCreateCard() {
   // Saving the contact will get an immediate notification.
   // Delay the server response so we can test the state of the UI.
   const promise5 = TestUtils.topicObserved("addrbook-contact-deleted");
-  CardDAVServer.responseDelay = PromiseUtils.defer();
+  CardDAVServer.responseDelay = Promise.withResolvers();
   BrowserTestUtils.promiseAlertDialog("accept");
   EventUtils.synthesizeMouseAtCenter(deleteButton, {}, abWindow);
   await promise5;
@@ -178,7 +178,7 @@ add_task(async function testCreateCardWithUIDChange() {
   // Saving the contact will get an immediate notification.
   // Delay the server response so we can test the state of the UI.
   const promise1 = TestUtils.topicObserved("addrbook-contact-created");
-  CardDAVServer.responseDelay = PromiseUtils.defer();
+  CardDAVServer.responseDelay = Promise.withResolvers();
   EventUtils.synthesizeMouseAtCenter(saveEditButton, {}, abWindow);
   await promise1;
   await notInEditingMode();
@@ -219,7 +219,7 @@ add_task(async function testCreateCardWithUIDChange() {
   // Saving the contact will get an immediate notification.
   // Delay the server response so we can test the state of the UI.
   const promise4 = TestUtils.topicObserved("addrbook-contact-deleted");
-  CardDAVServer.responseDelay = PromiseUtils.defer();
+  CardDAVServer.responseDelay = Promise.withResolvers();
   BrowserTestUtils.promiseAlertDialog("accept");
   EventUtils.synthesizeMouseAtCenter(deleteButton, {}, abWindow);
   await promise4;

mail/components/extensions/extensionPopup.js

@@ -354,7 +354,7 @@ var gBrowserInit = {
 
     const initiallyFocusedElement = document.commandDispatcher.focusedElement;
     const promise = gBrowser.selectedBrowser.isRemoteBrowser
-      ? PromiseUtils.defer().promise
+      ? Promise.withResolvers().promise
       : Promise.resolve();
 
     contentProgress.addListener({

mail/components/extensions/parent/ext-tabs.js

@@ -70,7 +70,7 @@ const tabListener = {
   awaitTabReady(nativeTabInfo) {
     let deferred = this.tabReadyPromises.get(nativeTabInfo);
     if (!deferred) {
-      deferred = PromiseUtils.defer();
+      deferred = Promise.withResolvers();
       const browser = getTabBrowser(nativeTabInfo);
       if (
         !this.initializingTabs.has(nativeTabInfo) &&

mail/modules/GlobalPopupNotifications.jsm

@@ -6,10 +6,6 @@
 
 var EXPORTED_SYMBOLS = ["PopupNotifications"];
 
-const { PromiseUtils } = ChromeUtils.importESModule(
-  "resource://gre/modules/PromiseUtils.sys.mjs"
-);
-
 const NOTIFICATION_EVENT_DISMISSED = "dismissed";
 const NOTIFICATION_EVENT_REMOVED = "removed";
 const NOTIFICATION_EVENT_SHOWING = "showing";
@@ -638,7 +634,7 @@ PopupNotifications.prototype = {
     if (this._ignoreDismissal) {
       return this._ignoreDismissal.promise;
     }
-    const deferred = PromiseUtils.defer();
+    const deferred = Promise.withResolvers();
     this._ignoreDismissal = deferred;
     this.panel.hidePopup();
     return deferred.promise;

mailnews/base/test/unit/test_junkingWhenDisabled.js

@@ -50,12 +50,12 @@ var gDBView;
 var gTreeView;
 
 var CommandUpdaterWithPromise = function () {
-  this.deferred = PromiseUtils.defer();
+  this.deferred = Promise.withResolvers();
 };
 CommandUpdaterWithPromise.prototype = {
   async promiseSelectionSummarized() {
     await this.deferred.promise;
-    this.deferred = PromiseUtils.defer();
+    this.deferred = Promise.withResolvers();
     return this.deferred.promise;
   },
 

mailnews/compose/test/unit/test_bcc.js

@@ -209,7 +209,7 @@ add_task(async function testBccWithSendLater() {
   );
   await promise;
 
-  const onStopSendingPromise = PromiseUtils.defer();
+  const onStopSendingPromise = Promise.withResolvers();
   const msgSendLater = Cc[
     "@mozilla.org/messengercompose/sendlater;1"
   ].getService(Ci.nsIMsgSendLater);
@@ -299,7 +299,7 @@ add_task(async function testBccOnlyWithSendLater() {
   );
   await promise;
 
-  const onStopSendingPromise = PromiseUtils.defer();
+  const onStopSendingPromise = Promise.withResolvers();
   const msgSendLater = Cc[
     "@mozilla.org/messengercompose/sendlater;1"
   ].getService(Ci.nsIMsgSendLater);

mailnews/compose/test/unit/test_sendMessageLater2.js

@@ -47,7 +47,7 @@ var msgSendLater = Cc["@mozilla.org/messengercompose/sendlater;1"].getService(
 );
 
 var messageListener;
-var onStopCopyPromise = PromiseUtils.defer();
+var onStopCopyPromise = Promise.withResolvers();
 
 /* exported OnStopCopy */
 // for head_compose.js
@@ -184,7 +184,7 @@ async function sendMessageLater(aTestFileIndex) {
   );
   await onStopCopyPromise.promise;
   // Reset onStopCopyPromise.
-  onStopCopyPromise = PromiseUtils.defer();
+  onStopCopyPromise = Promise.withResolvers();
 }
 
 function resetCounts() {
@@ -214,7 +214,7 @@ async function sendUnsentMessages() {
 // sequence and ensures the data is correct.
 class MsgSendLaterListener {
   constructor() {
-    this._deferredPromise = PromiseUtils.defer();
+    this._deferredPromise = Promise.withResolvers();
   }
 
   checkMessageSend(aCurrentMessage) {
@@ -292,7 +292,7 @@ class MsgSendLaterListener {
   }
 
   deferPromise() {
-    this._deferredPromise = PromiseUtils.defer();
+    this._deferredPromise = Promise.withResolvers();
   }
 
   get promise() {

mailnews/mime/test/unit/test_openpgp_decrypt.js

@@ -44,7 +44,7 @@ const contents = "Sundays are nothing without callaloo.";
  */
 const headerSink = {
   expectResults(maxLen) {
-    this._deferred = PromiseUtils.defer();
+    this._deferred = Promise.withResolvers();
     this.expectedCount = maxLen;
     this.countReceived = 0;
     this.results = [];

mailnews/mime/test/unit/test_smime_decrypt.js

@@ -81,7 +81,7 @@ var smimeDataDirectory = "../../../data/smime/";
 const smimeHeaderSink = {
   expectResults(maxLen) {
     // dump("Restarting for next test\n");
-    this._deferred = PromiseUtils.defer();
+    this._deferred = Promise.withResolvers();
     this._expectedEvents = maxLen;
     this.countReceived = 0;
     this._results = [];
@@ -605,7 +605,7 @@ var gMessages = [
   },
 ];
 
-const gCopyWaiter = PromiseUtils.defer();
+const gCopyWaiter = Promise.withResolvers();
 
 add_task(async function copy_messages() {
   for (const msg of gMessages) {

mailnews/mime/test/unit/test_smime_decrypt_allow_sha1.js

@@ -101,7 +101,7 @@ var smimeDataDirectory = "../../../data/smime/";
 const smimeHeaderSink = {
   expectResults(maxLen) {
     // dump("Restarting for next test\n");
-    this._deferred = PromiseUtils.defer();
+    this._deferred = Promise.withResolvers();
     this._expectedEvents = maxLen;
     this.countReceived = 0;
     this._results = [];
@@ -621,7 +621,7 @@ var gMessages = [
   },
 ];
 
-const gCopyWaiter = PromiseUtils.defer();
+const gCopyWaiter = Promise.withResolvers();
 
 add_task(async function copy_messages() {
   for (const msg of gMessages) {

mailnews/mime/test/unit/test_smime_perm_decrypt.js

@@ -88,7 +88,7 @@ var smimeDataDirectory = "../../../data/smime/";
 const smimeHeaderSink = {
   expectResults(maxLen) {
     // dump("Restarting for next test\n");
-    this._deferred = PromiseUtils.defer();
+    this._deferred = Promise.withResolvers();
     this._expectedEvents = maxLen;
     this.countReceived = 0;
     this._results = [];

mailnews/news/test/unit/test_internalUris.js

@@ -167,7 +167,7 @@ add_task(async function test_search() {
 add_task(async function test_grouplist() {
   // This tests nsNntpService::GetListOfGroupsOnServer.
   const subserver = localserver.QueryInterface(Ci.nsISubscribableServer);
-  const subscribablePromise = PromiseUtils.defer();
+  const subscribablePromise = Promise.withResolvers();
   const subscribeListener = {
     OnDonePopulating() {
       subscribablePromise.resolve();
@@ -271,7 +271,7 @@ class DummyMsgWindow {
   ]);
 
   constructor() {
-    this._deferredPromise = PromiseUtils.defer();
+    this._deferredPromise = Promise.withResolvers();
   }
 
   get statusFeedback() {
@@ -290,7 +290,7 @@ class DummyMsgWindow {
   }
 
   deferPromise() {
-    this._deferredPromise = PromiseUtils.defer();
+    this._deferredPromise = Promise.withResolvers();
   }
 
   get promise() {