debt - more strictPropertyInitialization (#78168)

src/vs/workbench/contrib/files/common/explorerModel.ts

@@ -88,6 +88,7 @@ export class ExplorerItem {
 		private _mtime?: number,
 	) {
 		this._isDirectoryResolved = false;
+		this._isDisposed = false;
 	}
 
 	get isDisposed(): boolean {

src/vs/workbench/contrib/preferences/browser/settingsEditor2.ts

@@ -131,9 +131,6 @@ export class SettingsEditor2 extends BaseEditor {
 	private scheduledRefreshes: Map<string, DOM.IFocusTracker>;
 	private lastFocusedSettingElement: string | null = null;
 
-	private actionBar: ActionBar;
-	private actionsContainer: HTMLElement;
-
 	/** Don't spam warnings */
 	private hasWarnedMissingSettings = false;
 
@@ -441,14 +438,14 @@ export class SettingsEditor2 extends BaseEditor {
 		this.settingsTargetsWidget.settingsTarget = ConfigurationTarget.USER_LOCAL;
 		this.settingsTargetsWidget.onDidTargetChange(target => this.onDidSettingsTargetChange(target));
 
-		this.actionsContainer = DOM.append(searchContainer, DOM.$('.settings-clear-widget'));
+		const actionsContainer = DOM.append(searchContainer, DOM.$('.settings-clear-widget'));
 
-		this.actionBar = this._register(new ActionBar(this.actionsContainer, {
+		const actionBar = this._register(new ActionBar(actionsContainer, {
 			animated: false,
 			actionViewItemProvider: (action: Action) => { return undefined; }
 		}));
 
-		this.actionBar.push([clearInputAction], { label: false, icon: true });
+		actionBar.push([clearInputAction], { label: false, icon: true });
 	}
 
 	private onDidSettingsTargetChange(target: SettingsTarget): void {

src/vs/workbench/contrib/webview/browser/baseWebviewElement.ts

@@ -50,8 +50,8 @@ export abstract class BaseWebview<T extends HTMLElement> extends Disposable {
 	private _element: T | undefined;
 	protected get element(): T | undefined { return this._element; }
 
-	private _focused: boolean;
-	protected get focused(): boolean { return this._focused; }
+	private _focused: boolean | undefined;
+	protected get focused(): boolean { return !!this._focused; }
 
 	private readonly _ready: Promise<void>;
 

src/vs/workbench/contrib/welcome/walkThrough/browser/walkThroughPart.ts

@@ -58,11 +58,11 @@ export class WalkThroughPart extends BaseEditor {
 
 	private readonly disposables = new DisposableStore();
 	private contentDisposables: IDisposable[] = [];
-	private content: HTMLDivElement;
-	private scrollbar: DomScrollableElement;
+	private content!: HTMLDivElement;
+	private scrollbar!: DomScrollableElement;
 	private editorFocus: IContextKey<boolean>;
-	private lastFocus: HTMLElement;
-	private size: Dimension;
+	private lastFocus: HTMLElement | undefined;
+	private size: Dimension | undefined;
 	private editorMemento: IEditorMemento<IWalkThroughEditorViewState>;
 
 	constructor(

src/vs/workbench/services/configuration/browser/configurationService.ts

@@ -33,7 +33,7 @@ export class WorkspaceService extends Disposable implements IConfigurationServic
 
 	public _serviceBrand: undefined;
 
-	private workspace: Workspace;
+	private workspace!: Workspace;
 	private completeWorkspaceBarrier: Barrier;
 	private readonly configurationCache: IConfigurationCache;
 	private _configuration: Configuration;