npm run dev报错！！

先看下我的报错

username:backend-atop-oa fulwin$ npm run dev

> [email protected] dev /Users/fulwin/Documents/codes/backend-atop-oa
> webpack-dev-server --inline --progress --config build/webpack.dev.conf.js

 10% building modules 1/1 modules 0 activeevents.js:183                            
      throw er; // Unhandled 'error' event
      ^

Error: getaddrinfo ENOTFOUND localhost
    at errnoException (dns.js:50:10)
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:92:26)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] dev: `webpack-dev-server --inline --progress --config build/webpack.dev.conf.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the [email protected] dev script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/fulwin/.npm/_logs/2018-01-08T07_29_15_303Z-debug.log

我是先删除了node_modules，重新npm install 没用（重新安装依赖）

rm -rf node_modules/
rm package-lock.json
npm cache clean --force
npm install

最后发现报错是这个意思：意思是 没有找到指定localhost

Error: getaddrinfo ENOTFOUND localhost
    at errnoException (dns.js:50:10)
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:92:26

解决方法：config=>index.js中把host改为127.0.0.1

npm run dev报错！！
然后再次试试 npm run dev