Improve typing (#7349)

src/@types/global.d.ts

@@ -163,6 +163,16 @@ declare global {
 
     interface HTMLAudioElement {
         type?: string;
+        // sinkId & setSinkId are experimental and typescript doesn't know about them
+        sinkId: string;
+        setSinkId(outputId: string): void;
+    }
+
+    interface HTMLVideoElement {
+        type?: string;
+        // sinkId & setSinkId are experimental and typescript doesn't know about them
+        sinkId: string;
+        setSinkId(outputId: string): void;
     }
 
     interface HTMLStyleElement {

src/DecryptionFailureTracker.ts

@@ -94,9 +94,9 @@ export class DecryptionFailureTracker {
     //     localStorage.setItem('mx-decryption-failure-event-id-hashes', JSON.stringify(this.trackedEventHashMap));
     // }
 
-    public eventDecrypted(e: MatrixEvent, err: MatrixError | Error): void {
+    public eventDecrypted(e: MatrixEvent, err: MatrixError): void {
         if (err) {
-            this.addDecryptionFailure(new DecryptionFailure(e.getId(), err.code));
+            this.addDecryptionFailure(new DecryptionFailure(e.getId(), err.errcode));
         } else {
             // Could be an event in the failures, remove it
             this.removeDecryptionFailuresForEvent(e);

src/components/structures/MatrixChat.tsx

@@ -15,7 +15,8 @@ limitations under the License.
 */
 
 import React, { ComponentType, createRef } from 'react';
-import { createClient } from "matrix-js-sdk/src/matrix";
+import { createClient } from 'matrix-js-sdk/src/matrix';
+import { MatrixError } from 'matrix-js-sdk/src/http-api';
 import { InvalidStoreError } from "matrix-js-sdk/src/errors";
 import { MatrixEvent } from "matrix-js-sdk/src/models/event";
 import { Error as ErrorEvent } from "matrix-analytics-events/types/typescript/Error";
@@ -233,7 +234,7 @@ interface IState {
     // When showing Modal dialogs we need to set aria-hidden on the root app element
     // and disable it when there are no dialogs
     hideToSRUsers: boolean;
-    syncError?: Error;
+    syncError?: MatrixError;
     resizeNotifier: ResizeNotifier;
     serverConfig?: ValidatedServerConfig;
     ready: boolean;

src/components/structures/RoomView.tsx

@@ -33,6 +33,7 @@ import { EventType } from 'matrix-js-sdk/src/@types/event';
 import { RoomState } from 'matrix-js-sdk/src/models/room-state';
 import { CallState, CallType, MatrixCall } from "matrix-js-sdk/src/webrtc/call";
 import { throttle } from "lodash";
+import { MatrixError } from 'matrix-js-sdk/src/http-api';
 
 import shouldHideEvent from '../../shouldHideEvent';
 import { _t } from '../../languageHandler';
@@ -164,7 +165,7 @@ export interface IRoomState {
     // error object, as from the matrix client/server API
     // If we failed to load information about the room,
     // store the error here.
-    roomLoadError?: Error;
+    roomLoadError?: MatrixError;
     // Have we sent a request to join the room that we're waiting to complete?
     joining: boolean;
     // this is true if we are fully scrolled-down, and are looking at

src/components/structures/auth/Login.tsx

@@ -454,7 +454,7 @@ export default class LoginComponent extends React.PureComponent<IProps, IState>
         let errorText: ReactNode = _t("There was a problem communicating with the homeserver, " +
             "please try again later.") + (errCode ? " (" + errCode + ")" : "");
 
-        if (err.cors === 'rejected') {
+        if (err["cors"] === 'rejected') { // browser-request specific error field
             if (window.location.protocol === 'https:' &&
                 (this.props.serverConfig.hsUrl.startsWith("http:") ||
                  !this.props.serverConfig.hsUrl.startsWith("http"))

src/stores/CommunityPrototypeStore.ts

@@ -18,6 +18,7 @@ import { Room } from "matrix-js-sdk/src/models/room";
 import * as utils from "matrix-js-sdk/src/utils";
 import { isNullOrUndefined } from "matrix-js-sdk/src/utils";
 import { logger } from "matrix-js-sdk/src/logger";
+import { Method } from "matrix-js-sdk/src/http-api";
 
 import { AsyncStoreWithClient } from "./AsyncStoreWithClient";
 import defaultDispatcher from "../dispatcher/dispatcher";
@@ -131,7 +132,7 @@ export class CommunityPrototypeStore extends AsyncStoreWithClient<IState> {
                 try {
                     const path = utils.encodeUri("/rooms/$roomId/group_info", { $roomId: room.roomId });
                     const profile = await this.matrixClient.http.authedRequest(
-                        undefined, "GET", path,
+                        undefined, Method.Get, path,
                         undefined, undefined,
                         { prefix: "/_matrix/client/unstable/im.vector.custom" });
                     // we use global account data because per-room account data on invites is unreliable

src/stores/RoomViewStore.tsx

@@ -16,7 +16,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import React from "react";
+import React, { ReactNode } from "react";
 import { Store } from 'flux/utils';
 import { MatrixError } from "matrix-js-sdk/src/http-api";
 import { logger } from "matrix-js-sdk/src/logger";
@@ -317,8 +317,8 @@ class RoomViewStore extends Store<ActionPayload> {
         }
     }
 
-    public showJoinRoomError(err: Error | MatrixError, roomId: string) {
-        let msg = err.message ? err.message : JSON.stringify(err);
+    public showJoinRoomError(err: MatrixError, roomId: string) {
+        let msg: ReactNode = err.message ? err.message : JSON.stringify(err);
         logger.log("Failed to join room:", msg);
 
         if (err.name === "ConnectionError") {

src/utils/ErrorUtils.tsx

@@ -57,7 +57,7 @@ export function messageForResourceLimitError(
     }
 }
 
-export function messageForSyncError(err: MatrixError | Error): ReactNode {
+export function messageForSyncError(err: MatrixError): ReactNode {
     if (err.errcode === 'M_RESOURCE_LIMIT_EXCEEDED') {
         const limitError = messageForResourceLimitError(
             err.data.limit_type,