import type IDriver from '../driver/i-driver';
import type { NSApplicator } from '../base/util';
import type { CallOptions } from '../base/options';
export declare class Lock {
    private readonly driver;
    private readonly namespace;
    private readonly key;
    private leaseTTL;
    private lease;
    private callOptions;
    constructor(driver: IDriver, namespace: NSApplicator, key: string | Buffer);
    ttl(seconds: number): this;
    options(options: CallOptions): this;
    acquire(): Promise<this>;
    leaseId(): Promise<string | null>;
    release(): Promise<void>;
    do<T>(fn: () => T | Promise<T>): Promise<T>;
}