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Add null type annotations for the common x: T = null pattern

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In these cases, the programmer has explicitly indicated that the type should be nullable
This commit is contained in:
Matt Bierner
2018-10-11 14:13:20 -07:00
parent da546f5d5d
commit 0318e90c93
130 changed files with 257 additions and 221 deletions
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6
src/vs/base/browser/dom.ts
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@@ -272,7 +272,7 @@ export function addDisposableNonBubblingMouseOutListener(node: Element, handler:
interface IRequestAnimationFrame {
(callback: (time: number) => void): number;
}
let _animationFrame: IRequestAnimationFrame = null;
let _animationFrame: IRequestAnimationFrame | null = null;
function doRequestAnimationFrame(callback: (time: number) => void): number {
if (!_animationFrame) {
const emulatedRequestAnimationFrame = (callback: (time: number) => void): any => {
@@ -425,7 +425,7 @@ class TimeoutThrottledDomListener<R, E extends DOMEvent> extends Disposable {
constructor(node: any, type: string, handler: (event: R) => void, eventMerger: IEventMerger<R, E> = <any>DEFAULT_EVENT_MERGER, minimumTimeMs: number = MINIMUM_TIME_MS) {
super();
let lastEvent: R = null;
let lastEvent: R | null = null;
let lastHandlerTime = 0;
let timeout = this._register(new TimeoutTimer());
@@ -771,7 +771,7 @@ export function createStyleSheet(container: HTMLElement = document.getElementsBy
return style;
}
let _sharedStyleSheet: HTMLStyleElement = null;
let _sharedStyleSheet: HTMLStyleElement | null = null;
function getSharedStyleSheet(): HTMLStyleElement {
if (!_sharedStyleSheet) {
_sharedStyleSheet = createStyleSheet();