Fix webview type name casing

extensions/markdown-language-features/src/features/preview.ts

@@ -155,7 +155,7 @@ export class MarkdownPreview {
 	private readonly _onDisposeEmitter = new vscode.EventEmitter<void>();
 	public readonly onDispose = this._onDisposeEmitter.event;
 
-	private readonly _onDidChangeViewStateEmitter = new vscode.EventEmitter<vscode.WebViewOnDidChangeViewStateEvent>();
+	private readonly _onDidChangeViewStateEmitter = new vscode.EventEmitter<vscode.WebviewOnDidChangeViewStateEvent>();
 	public readonly onDidChangeViewState = this._onDidChangeViewStateEmitter.event;
 
 	public get resource(): vscode.Uri {

src/vs/vscode.proposed.d.ts

@@ -532,7 +532,7 @@ declare module 'vscode' {
 		readonly localResourceRoots?: Uri[];
 	}
 
-	export interface WebViewOnDidChangeViewStateEvent {
+	export interface WebviewOnDidChangeViewStateEvent {
 		readonly viewColumn: ViewColumn;
 		readonly active: boolean;
 	}
@@ -581,7 +581,7 @@ declare module 'vscode' {
 		/**
 		 * Fired when the webview's view state changes.
 		 */
-		readonly onDidChangeViewState: Event<WebViewOnDidChangeViewStateEvent>;
+		readonly onDidChangeViewState: Event<WebviewOnDidChangeViewStateEvent>;
 
 		/**
 		 * Post a message to the webview content.

src/vs/workbench/api/node/extHostWebview.ts

@@ -29,8 +29,8 @@ export class ExtHostWebview implements vscode.Webview {
 	public readonly onDisposeEmitter = new Emitter<void>();
 	public readonly onDidDispose: Event<void> = this.onDisposeEmitter.event;
 
-	public readonly onDidChangeViewStateEmitter = new Emitter<vscode.WebViewOnDidChangeViewStateEvent>();
-	public readonly onDidChangeViewState: Event<vscode.WebViewOnDidChangeViewStateEvent> = this.onDidChangeViewStateEmitter.event;
+	public readonly onDidChangeViewStateEmitter = new Emitter<vscode.WebviewOnDidChangeViewStateEvent>();
+	public readonly onDidChangeViewState: Event<vscode.WebviewOnDidChangeViewStateEvent> = this.onDidChangeViewStateEmitter.event;
 
 	constructor(
 		handle: WebviewHandle,