npm install -g yarn

yarn config set registry https://registry.npm.taobao.org -g

yarn config set sass_binary_site http://cdn.npm.taobao.org/dist/node-sass -g

yarn 初始化项目        相当于npm run dev

yarn dev             相当于npm run dev

yarn add xx          添加依赖

yarn add xx -D       添加开发依赖

yarn remove xx       删除依赖