fix #26851

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

@@ -33,13 +33,13 @@ class FileSystemWatcher implements _FileSystemWatcher {
 	constructor(dispatcher: Event<FileSystemEvents>, globPattern: string, ignoreCreateEvents?: boolean, ignoreChangeEvents?: boolean, ignoreDeleteEvents?: boolean) {
 
 		this._config = 0;
-		if (!ignoreCreateEvents) {
+		if (ignoreCreateEvents) {
 			this._config += 0b001;
 		}
-		if (!ignoreChangeEvents) {
+		if (ignoreChangeEvents) {
 			this._config += 0b010;
 		}
-		if (!ignoreDeleteEvents) {
+		if (ignoreDeleteEvents) {
 			this._config += 0b100;
 		}
 

src/vs/workbench/test/electron-browser/api/extHostFileSystemEventService.test.ts

+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import * as assert from 'assert';
+import { ExtHostFileSystemEventService } from 'vs/workbench/api/node/extHostFileSystemEventService';
+
+suite('ExtHostFileSystemEventService', () => {
+
+
+	test('FileSystemWatcher ignore events properties are reversed #26851', function () {
+
+		const watcher1 = new ExtHostFileSystemEventService().createFileSystemWatcher('**/somethingInteresting', false, false, false);
+		assert.equal(watcher1.ignoreChangeEvents, false);
+		assert.equal(watcher1.ignoreCreateEvents, false);
+		assert.equal(watcher1.ignoreDeleteEvents, false);
+
+		const watcher2 = new ExtHostFileSystemEventService().createFileSystemWatcher('**/somethingBoring', true, true, true);
+		assert.equal(watcher2.ignoreChangeEvents, true);
+		assert.equal(watcher2.ignoreCreateEvents, true);
+		assert.equal(watcher2.ignoreDeleteEvents, true);
+	});
+
+});