/*!
 * The MIT License (MIT)
 *
 * Copyright (c) 2016 Christian Speckner <cnspeckn@googlemail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
interface MutexInterface {
    acquire(): Promise<MutexInterface.Releaser>;
    runExclusive<T>(callback: MutexInterface.Worker<T>): Promise<T>;
    isLocked(): boolean;
}
declare namespace MutexInterface {
    interface Releaser {
        (): void;
    }
    interface Worker<T> {
        (): Promise<T> | T;
    }
}
declare class Mutex implements MutexInterface {
    isLocked(): boolean;
    acquire(): Promise<MutexInterface.Releaser>;
    runExclusive<T>(callback: MutexInterface.Worker<T>): Promise<T>;
    private _dispatchNext;
    private _queue;
    private _pending;
}
export default Mutex;