1、报错内容

Error: getaddrinfo ENOTFOUND localhost
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:67:26)
Emitted 'error' event on Server instance at:
    at GetAddrInfoReqWrap.doListen [as callback] (net.js:1500:12)
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:67:17) {
  errno: -3008,
  code: 'ENOTFOUND',
  syscall: 'getaddrinfo',
  hostname: 'localhost'
}
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @1.0.0 dev: `webpack-dev-server --inline --progress --config build/webpack.dev.conf.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the @1.0.0 dev script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

2、解决方法：

（1）尝试更改版本，nvm use 14.17.0，更改后 还是报错

（2）打开config文件夹下的index.js文件找到如下图这段代码：

    host: 'localhost', // can be overwritten by process.env.HOST  ipv6配置'[::1]'
    port: 8080, // can be overwritten by process.env.PORT, if port is in use, a free one will be determined
    autoOpenBrowser: false,
    errorOverlay: true,
    notifyOnErrors: true,
    poll: false, // https://webpack.js.org/configuration/dev-server/#devserver-watchoptions-

host 修改为 127.0.0.1