类:EventEmitter

\Class: EventEmitter

EventEmitter 类由 node:events 模块定义和暴露:

\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 在添加新监听器时触发事件 'newListener',在删除现有监听器时触发 'removeListener'。

\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。

  \captureRejections <boolean> It enables automatic capturing of promise rejection. Default: false.