export default class LockFileInstance {
    private filePath;
    private lockKey;
    private logger;
    private tryMax;
    private tryGap;
    private tryCount;
    constructor(filePath: string, lockKey: string);
    clearFile(): void;
    checkIfCanRead(cb: any): void;
    read(key: string | undefined): Promise<any>;
    lock(cb: any): void;
    unlock(): void;
    update(key: string, value: any): Promise<object | undefined>;
}