删除所有监听器,或指定 eventName 的监听器。

删除在代码其他地方添加的监听器是不好的做法,特别是当 EventEmitter 实例是由其他组件或模块(例如套接字或文件流)创建时。

返回对 EventEmitter 的引用,以便可以链式调用。

Removes all listeners, or those of the specified eventName.

It is bad practice to remove listeners added elsewhere in the code, particularly when the EventEmitter instance was created by some other component or module (e.g. sockets or file streams).

Returns a reference to the EventEmitter, so that calls can be chained.