1. 查询当前镜像
npm get registry
2. 设置为淘宝镜像
npm config set registry https://registry.npm.taobao.org/ (旧地址,不再维护,可以使用)
npm config set registry https://registry.npmmirror.com/ (最新地址)
3. 设置为官方镜像
npm config set registry https://registry.npmjs.org/