declare class Delay {

    constructor(ms?: number|null, ctx?: any);

    public static for(ms?: number|null, ctx?: any): Delay|null;

    public resolve(): void;

    public reject(): void;

    public isTimeout(): boolean;

}

declare function promiseDelay(ms?: number|null, ctx?: any): Promise<any>|null;

export default Delay;
export {Delay, promiseDelay};