1.获得本来的镜像地址npm
npm get registry get
> https://registry.npmjs.org/淘宝
设成淘宝的yarn
npm config set registry http://registry.npm.taobao.org/co
yarn config set registry http://registry.npm.taobao.org/config
2.换成原来的ps
npm config set registry https://registry.npmjs.org/镜像