查看npm当前镜像源
npm config get registry
设置npm镜像源为淘宝镜像
npm config set registry https://registry.npm.taobao.org
设置npm恢复官方源
npm config set registry https://registry.npmjs.org
查看yarn当前镜像源
yarn config get registry
设置yarn镜像源为淘宝镜像
yarn config set registry https://registry.npm.taobao.org
设置yarn恢复官方源
yarn config set registry https : //registry.yarnpkg.com
