/**
 *****************************************
 * 事件处理函数
 *****************************************
 */
declare type Handler = (...args: any[]) => void;
/**
 *****************************************
 * 事件对象
 *****************************************
 */
interface Event {
    type: string;
    once: boolean;
    handler: Handler;
}
/**
 *****************************************
 * 内置接口
 *****************************************
 */
export interface EventEmitter {
    on(type: '$on', handler: (event: Event) => void): this;
    on(type: '$off', handler: (event: {
        type?: string;
        handler?: Handler;
    }) => void): this;
    on(type: '$emit', handler: (event: {
        type: string;
        args: unknown[];
    }) => void): this;
    once(type: '$on', handler: (event: Event) => void): this;
    once(type: '$off', handler: (event: {
        type?: string;
        handler?: Handler;
    }) => void): this;
    once(type: '$emit', handler: (event: {
        type: string;
        args: unknown[];
    }) => void): this;
}
/**
 *****************************************
 * 事件派发器
 *****************************************
 */
export declare class EventEmitter {
    /** 事件集 */
    private $$events;
    /** 初始化对象 */
    constructor();
    /** 移除事件 */
    off(type?: string, handler?: Handler): this;
    /** 移除事件 */
    emit(type: string, ...args: unknown[]): this;
}
export {};
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