Add lint for unused locals (#8007)

src/components/structures/InteractiveAuth.tsx

@@ -177,10 +177,6 @@ export default class InteractiveAuthComponent extends React.Component<IProps, IS
         }
     };
 
-    private tryContinue = (): void => {
-        this.stageComponent.current?.tryContinue?.();
-    };
-
     private authStateUpdated = (stageType: AuthType, stageState: IStageStatus): void => {
         const oldStage = this.state.authStage;
         this.setState({

src/components/structures/LoggedInView.tsx

@@ -1,5 +1,5 @@
 /*
-Copyright 2015 - 2021 The Matrix.org Foundation C.I.C.
+Copyright 2015 - 2022 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -58,6 +58,7 @@ import AudioFeedArrayForCall from '../views/voip/AudioFeedArrayForCall';
 import { OwnProfileStore } from '../../stores/OwnProfileStore';
 import { UPDATE_EVENT } from "../../stores/AsyncStore";
 import RoomView from './RoomView';
+import type { RoomView as RoomViewType } from './RoomView';
 import ToastContainer from './ToastContainer';
 import MyGroups from "./MyGroups";
 import UserView from "./UserView";
@@ -139,7 +140,7 @@ class LoggedInView extends React.Component<IProps, IState> {
     static displayName = 'LoggedInView';
 
     protected readonly _matrixClient: MatrixClient;
-    protected readonly _roomView: React.RefObject<any>;
+    protected readonly _roomView: React.RefObject<RoomViewType>;
     protected readonly _resizeContainer: React.RefObject<HTMLDivElement>;
     protected readonly resizeHandler: React.RefObject<HTMLDivElement>;
     protected layoutWatcherRef: string;

src/components/structures/MatrixChat.tsx

@@ -229,7 +229,6 @@ export default class MatrixChat extends React.PureComponent<IProps, IState> {
     private firstSyncPromise: IDeferred<void>;
 
     private screenAfterLogin?: IScreen;
-    private pageChanging: boolean;
     private tokenLogin?: boolean;
     private accountPassword?: string;
     private accountPasswordTimer?: number;
@@ -284,8 +283,6 @@ export default class MatrixChat extends React.PureComponent<IProps, IState> {
         this.prevWindowWidth = UIStore.instance.windowWidth || 1000;
         UIStore.instance.on(UI_EVENTS.Resize, this.handleResize);
 
-        this.pageChanging = false;
-
         // For PersistentElement
         this.state.resizeNotifier.on("middlePanelResized", this.dispatchTimelineResize);
 

src/components/structures/RoomDirectory.tsx

@@ -78,7 +78,6 @@ interface IState {
 
 @replaceableComponent("structures.RoomDirectory")
 export default class RoomDirectory extends React.Component<IProps, IState> {
-    private readonly startTime: number;
     private unmounted = false;
     private nextBatch: string = null;
     private filterTimeout: number;

src/components/structures/RoomView.tsx

@@ -1681,8 +1681,8 @@ export class RoomView extends React.Component<IRoomProps, IRoomState> {
      *
      * We pass it down to the scroll panel.
      */
-    private handleScrollKey = ev => {
-        let panel;
+    public handleScrollKey = ev => {
+        let panel: ScrollPanel | TimelinePanel;
         if (this.searchResultsPanel.current) {
             panel = this.searchResultsPanel.current;
         } else if (this.messagePanel) {