/* 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/. */

[Exposed=Worker, Pref="dom.workers.testing.enabled"]
namespace WorkerTestUtils {
  [Throws]
  unsigned long currentTimerNestingLevel();
};