fixes #66878

src/vs/base/browser/dom.ts

@@ -1167,8 +1167,3 @@ export function animate(fn: () => void): IDisposable {
 	let stepDisposable = scheduleAtNextAnimationFrame(step);
 	return toDisposable(() => stepDisposable.dispose());
 }
-
-export function timeout(fn: () => void, millis: number): IDisposable {
-	const timer = setTimeout(fn, millis);
-	return toDisposable(() => clearTimeout(timer));
-}
\ No newline at end of file

src/vs/base/browser/ui/list/listView.ts

@@ -21,6 +21,7 @@ import { memoize } from 'vs/base/common/decorators';
 import { Range, IRange } from 'vs/base/common/range';
 import { equals, distinct } from 'vs/base/common/arrays';
 import { DataTransfers, StaticDND, IDragAndDropData } from 'vs/base/browser/dnd';
+import { disposableTimeout } from 'vs/base/common/async';
 
 function canUseTranslate3d(): boolean {
 	if (browser.isFirefox) {
@@ -731,7 +732,7 @@ export class ListView<T> implements ISpliceable<T>, IDisposable {
 
 	private onDragLeave(): void {
 		this.onDragLeaveTimeout.dispose();
-		this.onDragLeaveTimeout = DOM.timeout(() => this.clearDragOverFeedback(), 100);
+		this.onDragLeaveTimeout = disposableTimeout(() => this.clearDragOverFeedback(), 100);
 	}
 
 	private onDrop(event: IListDragEvent<T>): void {
@@ -777,7 +778,7 @@ export class ListView<T> implements ISpliceable<T>, IDisposable {
 		}
 
 		this.dragOverAnimationStopDisposable.dispose();
-		this.dragOverAnimationStopDisposable = DOM.timeout(() => {
+		this.dragOverAnimationStopDisposable = disposableTimeout(() => {
 			if (this.dragOverAnimationDisposable) {
 				this.dragOverAnimationDisposable.dispose();
 				this.dragOverAnimationDisposable = undefined;

src/vs/base/browser/ui/tree/abstractTree.ts

@@ -7,7 +7,7 @@ import 'vs/css!./media/tree';
 import { IDisposable, dispose, Disposable, toDisposable } from 'vs/base/common/lifecycle';
 import { IListOptions, List, IListStyles, mightProducePrintableCharacter } from 'vs/base/browser/ui/list/listWidget';
 import { IListVirtualDelegate, IListRenderer, IListMouseEvent, IListEvent, IListContextMenuEvent, IListDragAndDrop, IListDragOverReaction, IKeyboardNavigationLabelProvider } from 'vs/base/browser/ui/list/list';
-import { append, $, toggleClass, timeout, getDomNodePagePosition, removeClass, addClass } from 'vs/base/browser/dom';
+import { append, $, toggleClass, getDomNodePagePosition, removeClass, addClass } from 'vs/base/browser/dom';
 import { Event, Relay, Emitter } from 'vs/base/common/event';
 import { StandardKeyboardEvent, IKeyboardEvent } from 'vs/base/browser/keyboardEvent';
 import { KeyCode } from 'vs/base/common/keyCodes';
@@ -20,6 +20,7 @@ import { domEvent } from 'vs/base/browser/event';
 import { fuzzyScore, FuzzyScore } from 'vs/base/common/filters';
 import { getVisibleState, isFilterResult } from 'vs/base/browser/ui/tree/indexTreeModel';
 import { localize } from 'vs/nls';
+import { disposableTimeout } from 'vs/base/common/async';
 
 function asTreeDragAndDropData<T, TFilterData>(data: IDragAndDropData): IDragAndDropData {
 	if (data instanceof ElementsDragAndDropData) {
@@ -69,7 +70,7 @@ class TreeNodeListDragAndDrop<T, TFilterData, TRef> implements IListDragAndDrop<
 		}
 
 		if (didChangeAutoExpandNode && typeof result !== 'boolean' && result.autoExpand) {
-			this.autoExpandDisposable = timeout(() => {
+			this.autoExpandDisposable = disposableTimeout(() => {
 				const model = this.modelProvider();
 				const ref = model.getNodeLocation(targetNode);
 

src/vs/base/common/async.ts

@@ -6,7 +6,7 @@
 import { CancellationToken, CancellationTokenSource } from 'vs/base/common/cancellation';
 import * as errors from 'vs/base/common/errors';
 import { Emitter, Event } from 'vs/base/common/event';
-import { Disposable, IDisposable } from 'vs/base/common/lifecycle';
+import { Disposable, IDisposable, toDisposable } from 'vs/base/common/lifecycle';
 import { URI } from 'vs/base/common/uri';
 
 export function isThenable<T>(obj: any): obj is Promise<T> {
@@ -320,11 +320,7 @@ export function timeout(millis: number, token?: CancellationToken): CancelablePr
 
 export function disposableTimeout(handler: () => void, timeout = 0): IDisposable {
 	const timer = setTimeout(handler, timeout);
-	return {
-		dispose() {
-			clearTimeout(timer);
-		}
-	};
+	return toDisposable(() => clearTimeout(timer));
 }
 
 /**