npm+cnpm+vuecli3打包相关

1，npm install和cnpm install时的不同

https://blog.csdn.net/csm0912/article/details/90264026

2，npm设置和查看仓库源

https://www.cnblogs.com/wenjunwei/p/10078460.html

使用nrm管理registry地址

a.下载nrm

npm install -g nrm

b.添加registry地址

nrm add npm http://registry.npmjs.org

nrm add taobao https://registry.npm.taobao.org

c.切换npm registry地址

nrm use taobao

nrm use npm

3，todo output