vue脚手架3.0，npm run serve时报
(node:783) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 upgrade listeners added to [Server]. Use emitter.setMaxListeners() to increase limit
百度翻译一下(节点：783)MaxListenerExceedWarning:检测到可能的EventEmitter内存泄漏。
解决办法：在vue.config.js文件里加入require(‘events’).EventEmitter.defaultMaxListeners = 0;