/**
 * Simple Mutex (Lock) implementation for managing concurrent file access
 * Uses a FIFO Promise chain to ensure fair scheduling and avoid "thundering herd".
 */
export declare class FileMutex {
    private queues;
    /**
     * Execute a task exclusively for a given file path.
     * Tasks are executed in FIFO order.
     */
    run<T>(filePath: string, task: () => Promise<T>): Promise<T>;
}
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