gecko-dev/dom/webidl/PerformanceObserver.webidl

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/* -*- 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 {
sequence<DOMString> entryTypes;
DOMString type;
boolean buffered;
[Pref="dom.enable_event_timing"]
DOMHighResTimeStamp durationThreshold;
};
callback PerformanceObserverCallback = undefined (PerformanceObserverEntryList entries,
PerformanceObserver observer);
[Pref="dom.enable_performance_observer",
Exposed=(Window,Worker)]
interface PerformanceObserver {
[Throws]
constructor(PerformanceObserverCallback callback);
[Throws] undefined observe(optional PerformanceObserverInit options = {});
undefined disconnect();
PerformanceEntryList takeRecords();
static readonly attribute object supportedEntryTypes;
};