nrm管理npm源

npm源：npm install命令下载需要依赖包的服务器地址，默认是 npm ---- https://registry.npmjs.org/

而国外的源速度太慢，所以我们一般都用国内的淘宝源taobao - https://registry.npm.taobao.org/

我们可以通过nrm工具管理npm的源。

一：安装nrm

npm  install   -g   nrm

二：查看nrm命令帮助文档

nrm -h

 Usage: nrm [options] [command]
  Commands:
    ls                           List all the registries
    current                      Show current registry name
    use <registry>               Change registry to registry
    add <registry> <url> [home]  Add one custom registry
    del <registry>               Delete one custom registry
    home <registry> [browser]    Open the homepage of registry with optional browser
    test [registry]              Show response time for specific or all registries
    help                         Print this help
  Options:
    -h, --help     output usage information
    -V, --version  output the version number

三：常用命令： 

1.nrm ls 查看已有的源 

2.nrm add <源名称> <源地址>  //新增源 

3.nrm use <源名称>.  //切换源