feat: add interface definitions which zone extends EventTarget (#35304)

Close #35173

PR Close #35304

packages/zone.js/lib/zone.api.extensions.ts

@@ -0,0 +1,38 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+/**
+ * Additional `EventTarget` methods added by `Zone.js`.
+ *
+ * 1. removeAllListeners, remove all event listeners of the given event name.
+ * 2. eventListeners, get all event listeners of the given event name.
+ */
+interface EventTarget {
+  /**
+   *
+   * Remove all event listeners by name for this event target.
+   *
+   * If the `eventName` is provided, will remove event listeners of that name.
+   * If the `eventName` is not provided, will remove all event listeners associated with
+   * `EventTarget`.
+   *
+   * @param eventName the name of the event, such as `click`. This parameter is optional.
+   */
+  removeAllListeners(eventName?: string): void;
+  /**
+   *
+   * Retrieve all event listeners by name.
+   *
+   * If the `eventName` is provided, will return an array of event handlers or event listener
+   * objects of the given event.
+   * If the `eventName` is not provided, will return all listeners.
+   *
+   * @param eventName the name of the event, such as click. This parameter is optional.
+   */
+  eventListeners(eventName?: string): EventListenerOrEventListenerObject[];
+}