/**
 * Simple async mutex for serializing write operations.
 *
 * Uses a FIFO queue to ensure fairness - waiters are processed
 * in the order they called acquire().
 */
export declare class Mutex {
    private locked;
    private waiting;
    /**
     * Acquire the mutex. If already locked, waits until released.
     */
    acquire(): Promise<void>;
    /**
     * Release the mutex. If there are waiters, the next one acquires.
     */
    release(): void;
    /**
     * Check if the mutex is currently locked.
     */
    isLocked(): boolean;
}
//# sourceMappingURL=mutex.d.ts.map