type MutexCallback = (...args: any[]) => Promise<void> | void;
export declare class Mutex {
    private available;
    private readonly acquireQueue;
    acquire(cb: MutexCallback): Promise<void>;
    acquireImmediately(cb: MutexCallback): Promise<boolean>;
    waitForClearAcquireQueue(): Promise<void>;
    private dispatchNext;
}
export {};