import type { Redis } from 'ioredis';
export declare type UnLockFn = () => Promise<void>;
export declare class NotGetLockError extends Error {
}
export declare const tryLock: (redis: Redis, key: string, px: number) => Promise<[boolean, UnLockFn]>;
export declare const runWithMutex: <T>(redis: Redis, key: string, fn: () => Promise<T>, px: number) => Promise<T>;
export declare const runWithLockLimit: <T>(redis: Redis, key: string, fn: () => Promise<T>, px: number) => Promise<T>;