npm源切换

1.查看原本的镜像地址

npm get registry 

> https://registry.npmjs.org/

设成淘宝的

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

将npm替换为cnpm

npm install -g cnpm --registry=https://registry.npm.taobao.org

2.换成原来的

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

原文：https://www.cnblogs.com/houjl/p/13141410.html