export declare const driver_dir: string;
export declare const lockDir: string;
export declare function lock(callback: (acquiredLock: boolean) => void): void;
export declare function unlock(afterUnlock: (err: Error | null) => void): void;
export declare function resetLockStatus(): void;
export declare function clearLockFile(): void;
export declare function clearLockFileWhenProcessExit(): void;