nrm和yrm是npm和yarn的镜像源管理器。它们可以对镜像源进行测速、切换、查看镜像源列表等操作。可以更好的管理npm和yarn的镜像源。例如我想使用腾讯的npm镜像源，则只需要使用nrm use tencent一条命令即可。
安装镜像源管理器
记得全局安装
npm i nrm -g
npm i yrm -g
安装完毕之后，查看版本
npm 源管理器nrm
nrm --version
1.2.5
yarn 源管理器yrm
yrm --version
1.0.6
镜像源列表
nrm 源列表
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/
yarn 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/
npmMirror https://skimdb.npmjs.com/registry/
edunpm - http://registry.enpmjs.org/
yarn --- https://registry.yarnpkg.com
测速
对镜像源进行测试响应时间,查看网络环境。
nrm test npm
* npm ------ 944ms
nrm test yarn
yarn ----- 954ms
nrm test tencent
tencent -- 178ms
nrm test cnpm
cnpm ----- 1202ms
nrm test taobao
taobao --- 182ms
nrm test npmMirror
npmMirror - 1779ms
国内tencent和taobao俩大厂比较快。
yrm test npm
* npm ---- 978ms
yrm test cnpm
cnpm --- 1922ms
yrm test taobao
taobao - 296ms
yrm test rednpm
rednpm - 278ms
yrm test npmMirror
npmMirror 2310ms
切换镜像源
npm 镜像源切换
//切换到腾讯npm镜像源
nrm use tencent
Registry has been set to: https://mirrors.cloud.tencent.com/npm/
//查看npm镜像源
npm config get registry
https://mirrors.cloud.tencent.com/npm/
yarn镜像源切换
//切换镜像源
C:\Users\Administrator>yrm use npm
YARN Registry has been set to: https://registry.npmjs.org/
verb config Skipping project config: C:\Users\Administrator/.npmrc. (matches userconfig)
NPM Registry has been set to: https://registry.npmjs.org/
// 查看yarn镜像源
C:\Users\Administrator>yarn config get registry
https://registry.npmjs.org/