yarn的源管理器yrm，随意切换源

yrm是一个yarn的源管理器，可以快速的在yarn的各个源之间切换，方便快捷。

安装：

npm install -g yrm
// or
yarn global add yrm

列出可用源，*是当前源

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/
  npmMirror  https://skimdb.npmjs.com/registry/
  edunpm - http://registry.enpmjs.org/
  yarn --- https://registry.yarnpkg.com

添加源

yrm add baidu https://registry.npm.baidu.com

删除源

yrm del baidu

切换源

yrm use baidu

  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/
  npmMirror  https://skimdb.npmjs.com/registry/
  edunpm - http://registry.enpmjs.org/
  yarn --- https://registry.yarnpkg.com
* baidu --- https://registry.yarnpkg.com

测试源的速度

yrm test

  npm ---- 4381ms
* cnpm --- 2050ms
  taobao - 1440ms
  nj ----- Fetch Error
  rednpm - Fetch Error
  npmMirror  13988ms
  edunpm - Fetch Error
  yarn --- Fetch Error

。