node_mirror: https://npm.taobao.org/mirrors/node/
npm_mirror: https://npm.taobao.org/mirrors/npm/
获取全局安装文件所在目录
npm config get prefix
修改全局安装文件所在目录
npm config set prefix [dir]
node_mirror: https://npm.taobao.org/mirrors/node/
npm_mirror: https://npm.taobao.org/mirrors/npm/
npm config get prefix
npm config set prefix [dir]
