/// <reference types="node" />
import { EventEmitter } from 'events';
export declare class EventManager extends EventEmitter {
    protected sharedEventManager: EventManager;
    private hooks;
    constructor(sharedEventManager?: EventManager);
    trigger(eventName: string, target: any, payload?: any): Promise<boolean>;
    has(event: string, callback: Function): boolean;
    attachOnce(eventName: string, callback: Function, index?: number): void;
    attach(event: string, callback: Function, index?: number): this;
    attachAt(index: number, event: string, callback: Function): this;
    detach(event: string, callback: Function): this;
    getSharedEventManager(): EventManager;
}