q(...) -> Promise.resolve

```
find src test -name '*.js' | xargs perl -i -pe 's/\b[qQ]\(/Promise.resolve(/'
```

src/Lifecycle.js

@@ -116,12 +116,12 @@ export function loadSession(opts) {
  */
 export function attemptTokenLogin(queryParams, defaultDeviceDisplayName) {
     if (!queryParams.loginToken) {
-        return q(false);
+        return Promise.resolve(false);
     }
 
     if (!queryParams.homeserver) {
         console.warn("Cannot log in with token: can't determine HS URL to use");
-        return q(false);
+        return Promise.resolve(false);
     }
 
     // create a temporary MatrixClient to do the login
@@ -197,7 +197,7 @@ function _registerAsGuest(hsUrl, isUrl, defaultDeviceDisplayName) {
 //      localStorage (e.g. teamToken, isGuest etc.)
 function _restoreFromLocalStorage() {
     if (!localStorage) {
-        return q(false);
+        return Promise.resolve(false);
     }
     const hsUrl = localStorage.getItem("mx_hs_url");
     const isUrl = localStorage.getItem("mx_is_url") || 'https://matrix.org';
@@ -229,7 +229,7 @@ function _restoreFromLocalStorage() {
         }
     } else {
         console.log("No previous session found.");
-        return q(false);
+        return Promise.resolve(false);
     }
 }
 

src/Login.js

@@ -144,7 +144,7 @@ export default class Login {
 
         const client = this._createTemporaryClient();
         return client.login('m.login.password', loginParams).then(function(data) {
-            return q({
+            return Promise.resolve({
                 homeserverUrl: self._hsUrl,
                 identityServerUrl: self._isUrl,
                 userId: data.user_id,
@@ -160,7 +160,7 @@ export default class Login {
                     });
 
                     return fbClient.login('m.login.password', loginParams).then(function(data) {
-                        return q({
+                        return Promise.resolve({
                             homeserverUrl: self._fallbackHsUrl,
                             identityServerUrl: self._isUrl,
                             userId: data.user_id,

src/Rooms.js

@@ -102,7 +102,7 @@ export function guessAndSetDMRoom(room, isDirect) {
  */
 export function setDMRoom(roomId, userId) {
     if (MatrixClientPeg.get().isGuest()) {
-        return q();
+        return Promise.resolve();
     }
 
     const mDirectEvent = MatrixClientPeg.get().getAccountData('m.direct');

src/ScalarAuthClient.js

@@ -39,7 +39,7 @@ class ScalarAuthClient {
     // Returns a scalar_token string
     getScalarToken() {
         var tok = window.localStorage.getItem("mx_scalar_token");
-        if (tok) return q(tok);
+        if (tok) return Promise.resolve(tok);
 
         // No saved token, so do the dance to get one. First, we
         // need an openid bearer token from the HS.

src/UserSettingsStore.js

@@ -48,7 +48,7 @@ export default {
 
     loadThreePids: function() {
         if (MatrixClientPeg.get().isGuest()) {
-            return q({
+            return Promise.resolve({
                 threepids: [],
             }); // guests can't poke 3pid endpoint
         }

src/autocomplete/Autocompleter.js

@@ -57,7 +57,7 @@ export async function getCompletions(query: string, selection: SelectionRange, f
      state (== "fulfilled" || "rejected") and value. */
     const completionsList = await Q.allSettled(
         PROVIDERS.map(provider => {
-            return Q(provider.getCompletions(query, selection, force))
+            return Promise.resolve(provider.getCompletions(query, selection, force))
                 .timeout(PROVIDER_COMPLETION_TIMEOUT);
         }),
     );

src/components/structures/MatrixChat.js

@@ -323,9 +323,9 @@ module.exports = React.createClass({
                 return;
             }
 
-            // the extra q() ensures that synchronous exceptions hit the same codepath as
+            // the extra Promise.resolve() ensures that synchronous exceptions hit the same codepath as
             // asynchronous ones.
-            return q().then(() => {
+            return Promise.resolve().then(() => {
                 return Lifecycle.loadSession({
                     fragmentQueryParams: this.props.startingFragmentQueryParams,
                     enableGuest: this.props.enableGuest,
@@ -694,7 +694,7 @@ module.exports = React.createClass({
 
         // Wait for the first sync to complete so that if a room does have an alias,
         // it would have been retrieved.
-        let waitFor = q(null);
+        let waitFor = Promise.resolve(null);
         if (!this.firstSyncComplete) {
             if (!this.firstSyncPromise) {
                 console.warn('Cannot view a room before first sync. room_id:', roomInfo.room_id);

src/components/structures/RoomView.js

@@ -788,7 +788,7 @@ module.exports = React.createClass({
 
     onSearchResultsFillRequest: function(backwards) {
         if (!backwards) {
-            return q(false);
+            return Promise.resolve(false);
         }
 
         if (this.state.searchResults.next_batch) {
@@ -798,7 +798,7 @@ module.exports = React.createClass({
             return this._handleSearchResult(searchPromise);
         } else {
             debuglog("no more search results");
-            return q(false);
+            return Promise.resolve(false);
         }
     },
 
@@ -859,7 +859,7 @@ module.exports = React.createClass({
             return;
         }
 
-        q().then(() => {
+        Promise.resolve().then(() => {
             const signUrl = this.props.thirdPartyInvite ?
                 this.props.thirdPartyInvite.inviteSignUrl : undefined;
             dis.dispatch({
@@ -878,7 +878,7 @@ module.exports = React.createClass({
                     }
                 }
             }
-            return q();
+            return Promise.resolve();
         });
     },
 

src/components/structures/ScrollPanel.js

@@ -145,7 +145,7 @@ module.exports = React.createClass({
         return {
             stickyBottom: true,
             startAtBottom: true,
-            onFillRequest: function(backwards) { return q(false); },
+            onFillRequest: function(backwards) { return Promise.resolve(false); },
             onUnfillRequest: function(backwards, scrollToken) {},
             onScroll: function() {},
         };

src/components/structures/TimelinePanel.js

@@ -311,13 +311,13 @@ var TimelinePanel = React.createClass({
 
         if (!this.state[canPaginateKey]) {
             debuglog("TimelinePanel: have given up", dir, "paginating this timeline");
-            return q(false);
+            return Promise.resolve(false);
         }
 
         if(!this._timelineWindow.canPaginate(dir)) {
             debuglog("TimelinePanel: can't", dir, "paginate any further");
             this.setState({[canPaginateKey]: false});
-            return q(false);
+            return Promise.resolve(false);
         }
 
         debuglog("TimelinePanel: Initiating paginate; backwards:"+backwards);

src/components/structures/UserSettings.js

@@ -203,7 +203,7 @@ module.exports = React.createClass({
         this._addThreepid = null;
 
         if (PlatformPeg.get()) {
-            q().then(() => {
+            Promise.resolve().then(() => {
                 return PlatformPeg.get().getAppVersion();
             }).done((appVersion) => {
                 if (this._unmounted) return;
@@ -301,7 +301,7 @@ module.exports = React.createClass({
     },
 
     _refreshMediaDevices: function() {
-        q().then(() => {
+        Promise.resolve().then(() => {
             return CallMediaHandler.getDevices();
         }).then((mediaDevices) => {
             // console.log("got mediaDevices", mediaDevices, this._unmounted);

src/components/structures/login/Registration.js

@@ -180,7 +180,7 @@ module.exports = React.createClass({
         // will just nop. The point of this being we might not have the email address
         // that the user registered with at this stage (depending on whether this
         // is the client they initiated registration).
-        let trackPromise = q(null);
+        let trackPromise = Promise.resolve(null);
         if (this._rtsClient && extra.emailSid) {
             // Track referral if this.props.referrer set, get team_token in order to
             // retrieve team config and see welcome page etc.
@@ -232,7 +232,7 @@ module.exports = React.createClass({
 
     _setupPushers: function(matrixClient) {
         if (!this.props.brand) {
-            return q();
+            return Promise.resolve();
         }
         return matrixClient.getPushers().then((resp)=>{
             const pushers = resp.pushers;

src/components/views/elements/EditableTextContainer.js

@@ -148,5 +148,5 @@ EditableTextContainer.defaultProps = {
     initialValue: "",
     placeholder: "",
     blurToSubmit: false,
-    onSubmit: function(v) {return q(); },
+    onSubmit: function(v) {return Promise.resolve(); },
 };

src/components/views/messages/MImageBody.js

@@ -123,7 +123,7 @@ module.exports = React.createClass({
         this.fixupHeight();
         const content = this.props.mxEvent.getContent();
         if (content.file !== undefined && this.state.decryptedUrl === null) {
-            let thumbnailPromise = q(null);
+            let thumbnailPromise = Promise.resolve(null);
             if (content.info.thumbnail_file) {
                 thumbnailPromise = decryptFile(
                     content.info.thumbnail_file,

src/components/views/messages/MVideoBody.js

@@ -89,7 +89,7 @@ module.exports = React.createClass({
     componentDidMount: function() {
         const content = this.props.mxEvent.getContent();
         if (content.file !== undefined && this.state.decryptedUrl === null) {
-            var thumbnailPromise = q(null);
+            var thumbnailPromise = Promise.resolve(null);
             if (content.info.thumbnail_file) {
                 thumbnailPromise = decryptFile(
                     content.info.thumbnail_file

src/components/views/room_settings/ColorSettings.js

@@ -72,7 +72,7 @@ module.exports = React.createClass({
 
     saveSettings: function() { // : Promise
         if (!this.state.hasChanged) {
-            return q(); // They didn't explicitly give a color to save.
+            return Promise.resolve(); // They didn't explicitly give a color to save.
         }
         var originalState = this.getInitialState();
         if (originalState.primary_color !== this.state.primary_color ||
@@ -92,7 +92,7 @@ module.exports = React.createClass({
                 }
             });
         }
-        return q(); // no color diff
+        return Promise.resolve(); // no color diff
     },
 
     _getColorIndex: function(scheme) {

src/components/views/rooms/Autocomplete.js

@@ -64,7 +64,7 @@ export default class Autocomplete extends React.Component {
                 // Hide the autocomplete box
                 hide: true,
             });
-            return Q(null);
+            return Promise.resolve(null);
         }
         let autocompleteDelay = UserSettingsStore.getLocalSetting('autocompleteDelay', 200);
 

src/components/views/rooms/RoomSettings.js

@@ -305,25 +305,25 @@ module.exports = React.createClass({
     },
 
     saveAliases: function() {
-        if (!this.refs.alias_settings) { return [q()]; }
+        if (!this.refs.alias_settings) { return [Promise.resolve()]; }
         return this.refs.alias_settings.saveSettings();
     },
 
     saveColor: function() {
-        if (!this.refs.color_settings) { return q(); }
+        if (!this.refs.color_settings) { return Promise.resolve(); }
         return this.refs.color_settings.saveSettings();
     },
 
     saveUrlPreviewSettings: function() {
-        if (!this.refs.url_preview_settings) { return q(); }
+        if (!this.refs.url_preview_settings) { return Promise.resolve(); }
         return this.refs.url_preview_settings.saveSettings();
     },
 
     saveEnableEncryption: function() {
-        if (!this.refs.encrypt) { return q(); }
+        if (!this.refs.encrypt) { return Promise.resolve(); }
 
         var encrypt = this.refs.encrypt.checked;
-        if (!encrypt) { return q(); }
+        if (!encrypt) { return Promise.resolve(); }
 
         var roomId = this.props.room.roomId;
         return MatrixClientPeg.get().sendStateEvent(

src/createRoom.js

@@ -42,7 +42,7 @@ function createRoom(opts) {
     const client = MatrixClientPeg.get();
     if (client.isGuest()) {
         dis.dispatch({action: 'view_set_mxid'});
-        return q(null);
+        return Promise.resolve(null);
     }
 
     const defaultPreset = opts.dmUserId ? 'trusted_private_chat' : 'private_chat';
@@ -92,7 +92,7 @@ function createRoom(opts) {
         if (opts.dmUserId) {
             return Rooms.setDMRoom(roomId, opts.dmUserId);
         } else {
-            return q();
+            return Promise.resolve();
         }
     }).then(function() {
         // NB createRoom doesn't block on the client seeing the echo that the

src/utils/DecryptFile.js

@@ -53,7 +53,7 @@ export function readBlobAsDataUri(file) {
 export function decryptFile(file) {
     const url = MatrixClientPeg.get().mxcUrlToHttp(file.url);
     // Download the encrypted file as an array buffer.
-    return q(fetch(url)).then(function(response) {
+    return Promise.resolve(fetch(url)).then(function(response) {
         return response.arrayBuffer();
     }).then(function(responseData) {
         // Decrypt the array buffer using the information taken from

test/components/structures/ScrollPanel-test.js

@@ -58,7 +58,7 @@ var Tester = React.createClass({
         if (handler) {
             res = handler();
         } else {
-            res = q(false);
+            res = Promise.resolve(false);
         }
 
         if (defer) {
@@ -168,7 +168,7 @@ describe('ScrollPanel', function() {
         const sp = tester.scrollPanel();
         let retriesRemaining = 1;
         const awaitReady = function() {
-            return q().then(() => {
+            return Promise.resolve().then(() => {
                 if (sp._pendingFillRequests.b === false &&
                     sp._pendingFillRequests.f === false
                    ) {
@@ -195,7 +195,7 @@ describe('ScrollPanel', function() {
     it('should handle scrollEvent strangeness', function() {
         const events = [];
 
-        return q().then(() => {
+        return Promise.resolve().then(() => {
             // initialise with a load of events
             for (let i = 0; i < 20; i++) {
                 events.push(i+80);
@@ -227,7 +227,7 @@ describe('ScrollPanel', function() {
 
     it('should not get stuck in #528 workaround', function(done) {
         var events = [];
-        q().then(() => {
+        Promise.resolve().then(() => {
             // initialise with a bunch of events
             for (var i = 0; i < 40; i++) {
                 events.push(i);

test/components/structures/TimelinePanel-test.js

@@ -145,7 +145,7 @@ describe('TimelinePanel', function() {
         // panel isn't paginating
         var awaitPaginationCompletion = function() {
             if(!panel.state.forwardPaginating)
-                return q();
+                return Promise.resolve();
             else
                 return q.delay(0).then(awaitPaginationCompletion);
         };
@@ -214,7 +214,7 @@ describe('TimelinePanel', function() {
         client.paginateEventTimeline = sinon.spy((tl, opts) => {
             console.log("paginate:", opts);
             expect(opts.backwards).toBe(true);
-            return q(true);
+            return Promise.resolve(true);
         });
 
         var rendered = ReactDOM.render(

test/components/views/dialogs/InteractiveAuthDialog-test.js

@@ -50,7 +50,7 @@ describe('InteractiveAuthDialog', function () {
 
     it('Should successfully complete a password flow', function() {
         const onFinished = sinon.spy();
-        const doRequest = sinon.stub().returns(q({a:1}));
+        const doRequest = sinon.stub().returns(Promise.resolve({a:1}));
 
         // tell the stub matrixclient to return a real userid
         var client = MatrixClientPeg.get();

test/stores/RoomViewStore-test.js

@@ -39,7 +39,7 @@ describe('RoomViewStore', function() {
     });
 
     it('can be used to view a room by alias and join', function(done) {
-        peg.get().getRoomIdForAlias.returns(q({room_id: "!randomcharacters:aser.ver"}));
+        peg.get().getRoomIdForAlias.returns(Promise.resolve({room_id: "!randomcharacters:aser.ver"}));
         peg.get().joinRoom = (roomAddress) => {
             expect(roomAddress).toBe("#somealias2:aser.ver");
             done();

test/test-utils.js

@@ -75,12 +75,12 @@ export function createTestClient() {
         on: sinon.stub(),
         removeListener: sinon.stub(),
         isRoomEncrypted: sinon.stub().returns(false),
-        peekInRoom: sinon.stub().returns(q(mkStubRoom())),
+        peekInRoom: sinon.stub().returns(Promise.resolve(mkStubRoom())),
 
-        paginateEventTimeline: sinon.stub().returns(q()),
-        sendReadReceipt: sinon.stub().returns(q()),
-        getRoomIdForAlias: sinon.stub().returns(q()),
-        getProfileInfo: sinon.stub().returns(q({})),
+        paginateEventTimeline: sinon.stub().returns(Promise.resolve()),
+        sendReadReceipt: sinon.stub().returns(Promise.resolve()),
+        getRoomIdForAlias: sinon.stub().returns(Promise.resolve()),
+        getProfileInfo: sinon.stub().returns(Promise.resolve({})),
         getAccountData: (type) => {
             return mkEvent({
                 type,
@@ -89,9 +89,9 @@ export function createTestClient() {
             });
         },
         setAccountData: sinon.stub(),
-        sendTyping: sinon.stub().returns(q({})),
-        sendTextMessage: () => q({}),
-        sendHtmlMessage: () => q({}),
+        sendTyping: sinon.stub().returns(Promise.resolve({})),
+        sendTextMessage: () => Promise.resolve({}),
+        sendHtmlMessage: () => Promise.resolve({}),
         getSyncState: () => "SYNCING",
         generateClientSecret: () => "t35tcl1Ent5ECr3T",
         isGuest: () => false,
@@ -101,13 +101,13 @@ export function createTestClient() {
 export function createTestRtsClient(teamMap, sidMap) {
     return {
         getTeamsConfig() {
-            return q(Object.keys(teamMap).map((token) => teamMap[token]));
+            return Promise.resolve(Object.keys(teamMap).map((token) => teamMap[token]));
         },
         trackReferral(referrer, emailSid, clientSecret) {
-            return q({team_token: sidMap[emailSid]});
+            return Promise.resolve({team_token: sidMap[emailSid]});
         },
         getTeam(teamToken) {
-            return q(teamMap[teamToken]);
+            return Promise.resolve(teamMap[teamToken]);
         },
     };
 }