类：EventEmitter

🌐 Class: EventEmitter

EventEmitter 类由 node:events 模块定义并导出：

🌐 The EventEmitter class is defined and exposed by the node:events module:

import { EventEmitter } from 'node:events';const EventEmitter = require('node:events');拷贝

所有 EventEmitter 在添加新监听器时都会触发 'newListener' 事件，在移除现有监听器时会触发 'removeListener' 事件。

🌐 All EventEmitters emit the event 'newListener' when new listeners are added and 'removeListener' when existing listeners are removed.

它支持以下的选项：

🌐 It supports the following option:

• captureRejections <boolean> 它启用 自动捕获 Promise 拒绝。 默认值： false。