使用 nrm 管理 npm 源

➜  ~ npm i nrm -g

# 查看 nrm 内置的几个 npm 源
➜  ~ 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/

# 切换源
➜  ~ nrm use cnpm
    Registry has been set to: http://r.cnpmjs.org/