npm镜像源切换

npm set registry https://registry.npm.taobao.org/ 

或者安装nrm对镜像源进行管理

1, 安装

npm install -g nrm

2，查看可选源，*表示正在使用的

 nrm ls 

* npm ---------- https://registry.npmjs.org/
  yarn --------- https://registry.yarnpkg.com/
  tencent ------ https://mirrors.cloud.tencent.com/npm/
  cnpm --------- https://r.cnpmjs.org/
  taobao ------- https://registry.npmmirror.com/
  npmMirror ---- https://skimdb.npmjs.com/registry/

3,使用

nrm use taobao //切换

vue/cli 安装文档