import { PromiseEvent } from '../../class/PromiseEvent';
import { class_Dfr } from 'atma-utils';
export declare class PromiseEventWrap extends class_Dfr {
    private _events;
    $source: PromiseEvent<any>;
    on(event: any, cb: any): this;
    once(event: any, cb: any): this;
    emit(event: any, ...args: any[]): void;
    /** Attach this wrapper to the promiseEvent */
    bind(promiseEvent: PromiseEvent<any>): void;
    private bindOn;
    private bindOnOnce;
}