npm install
npm run serve
npm run build
npm run lint
## 安装sass https://www.npmjs.com/package/sass
$ npm i sass
## sass-loader
$ npm install -D sass-loader@7
## 安装配置vue-router3 https://v3.router.vuejs.org/zh/installation.html
$ npm install vue-router@3
## 安装配置element-ui https://element.eleme.cn/#/zh-CN/component/installation
$ npm i element-ui -S
## 安装axios
$ npm install axios
## 安装mockjs
$ npm i mockjs