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src/vs/platform/files/node/diskFileSystemProvider.ts

@@ -544,10 +544,8 @@ export class DiskFileSystemProvider extends Disposable implements
 
 		// Buffer requests for recursive watching to decide on right watcher
 		// that supports potentially watching more than one folder at once
-		this.recursiveWatchRequestDelayer.trigger(() => {
+		this.recursiveWatchRequestDelayer.trigger(async () => {
 			this.doRefreshRecursiveWatchers();
-
-			return Promise.resolve();
 		});
 	}
 

src/vs/workbench/browser/parts/editor/editorGroupView.ts

@@ -894,7 +894,7 @@ export class EditorGroupView extends Themable implements IEditorGroupView {
 	private async doShowEditor(editor: EditorInput, active: boolean, options?: EditorOptions): Promise<IEditorPane | undefined> {
 
 		// Show in editor control if the active editor changed
-		let openEditorPromise: Promise<IEditorPane | undefined>;
+		let openEditorPromise: Promise<IEditorPane | undefined> | undefined;
 		if (active) {
 			openEditorPromise = (async () => {
 				try {
@@ -915,7 +915,7 @@ export class EditorGroupView extends Themable implements IEditorGroupView {
 				}
 			})();
 		} else {
-			openEditorPromise = Promise.resolve(undefined); // inactive: return undefined as result to signal this
+			openEditorPromise = undefined; // inactive: return undefined as result to signal this
 		}
 
 		// Show in title control after editor control because some actions depend on it

src/vs/workbench/common/editor/diffEditorModel.ts

@@ -32,8 +32,8 @@ export class DiffEditorModel extends EditorModel {
 
 	async load(): Promise<EditorModel> {
 		await Promise.all([
-			this._originalModel ? this._originalModel.load() : Promise.resolve(undefined),
-			this._modifiedModel ? this._modifiedModel.load() : Promise.resolve(undefined),
+			this._originalModel?.load(),
+			this._modifiedModel?.load(),
 		]);
 
 		return this;

src/vs/workbench/contrib/backup/electron-browser/backupTracker.ts

@@ -228,7 +228,7 @@ export class NativeBackupTracker extends BackupTracker implements IWorkbenchCont
 		// If we still have dirty working copies, save those directly
 		// unless the save was not successful (e.g. cancelled)
 		if (result !== false) {
-			await Promise.all(workingCopies.map(workingCopy => workingCopy.isDirty() ? workingCopy.save(saveOptions) : Promise.resolve(true)));
+			await Promise.all(workingCopies.map(workingCopy => workingCopy.isDirty() ? workingCopy.save(saveOptions) : true));
 		}
 	}
 
@@ -244,7 +244,7 @@ export class NativeBackupTracker extends BackupTracker implements IWorkbenchCont
 
 		// If we still have dirty working copies, revert those directly
 		// unless the revert operation was not successful (e.g. cancelled)
-		await Promise.all(workingCopies.map(workingCopy => workingCopy.isDirty() ? workingCopy.revert(revertOptions) : Promise.resolve()));
+		await Promise.all(workingCopies.map(workingCopy => workingCopy.isDirty() ? workingCopy.revert(revertOptions) : undefined));
 	}
 
 	private noVeto(backupsToDiscard: IWorkingCopy[]): boolean | Promise<boolean> {