安装
npm install -g yrm
查看可切换镜像源列表
yrm ls
npm ----- https://registry.npmjs.org/
cnpm ---- http://r.cnpmjs.org/
taobao -- https://registry.npm.taobao.org/
nj ------ https://registry.nodejitsu.com/
rednpm -- http://registry.mirror.cqupt.edu.cn
skimdb -- https://skimdb.npmjs.com/registry
yarn ---- https://registry.yarnpkg.com
使用指定镜像源
yrm use taobao
测试访问速度
yrm test taobao
