gecko-dev/dom/webidl/PerformanceObserver.webidl

/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * The origin of this IDL file is
 * https://w3c.github.io/performance-timeline/#the-performanceobserver-interface
 */

dictionary PerformanceObserverInit {
  required sequence<DOMString> entryTypes;
};

callback PerformanceObserverCallback = void (PerformanceObserverEntryList entries, PerformanceObserver observer);

[Func="Performance::IsObserverEnabled",
 Constructor(PerformanceObserverCallback callback),
 Exposed=(Window,Worker)]
interface PerformanceObserver {
  [Throws]
  void observe(PerformanceObserverInit options);
  void disconnect();
};