npm的镜像替换成淘宝

1. 得到原本的镜像地址

npm get registry 
> https://registry.npmjs.org/

2. 切换到淘宝源

• 临时使用淘宝源

npm --registry https://registry.npm.taobao.org install node-red-contrib-composer@latest

• 全局配置切换到淘宝源

npm config set registry http://registry.npm.taobao.org/

3.全局配置切换到官方源

npm config set registry https://registry.npmjs.org/

4. 检测是否切换到了淘宝源

npm info underscore

 gitHead: 'e4743ab712b8ab42ad4ccb48b155034d02394e4d',
  dist:
   { shasum: '4f3fb53b106e6097fcf9cb4109f2a5e9bdfa5022',
     size: 34172,
     noattachment: false,
     tarball: 'http://registry.npm.taobao.org/underscore/download/underscore-1.8.3.tgz' },
  directories: {},
  publish_time: 1427988774520 }