/**
 * A Mutex class using Promises.
 *
 * See https://spin.atomicobject.com/2018/09/10/javascript-concurrency/
 */
export default class Mutex {
    private mutex;
    lock(): Promise<() => void>;
    dispatch<T>(fn: (() => T) | (() => PromiseLike<T>)): Promise<T>;
}
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