#事件中心

1function getDetaultEmitter(): EventEmitter;

1interface EventEmitter {
2  // 监听事件
3  on(eventName: string, callback: TCallback): EventEmitter;
4  // 取消监听
5  off(eventName: string, callback: TCallback): EventEmitter;
6  // 触发事件
7  emit(eventName: string, data: any): EventEmitter;
8  // 监听一次
9  once(eventName: string, callback: TCallback): EventEmitter;
10  // 清除监听
11  clear(eventName: string): EventEmitter;
12  // 清除所有监听
13  clearAll(): EventEmitter;
14  // 获取可解构方法
15  getFuncMap(): {
16    on(eventName: string, callback: TCallback): EventEmitter;
17    off(eventName: string, callback: TCallback): EventEmitter;
18    emit(eventName: string, event: CustomEvent): EventEmitter;
19    once(eventName: string, callback: TCallback): EventEmitter;
20    clear(eventName: string): EventEmitter;
21    clearAll(): EventEmitter;
22  };
23}