npm一次性开启两个服务

npm一次性开启两个服务

1. 安装concurrently github地址
2. npm i concurrently -g全局安装
3. 修改package.json中的scripts

   "scripts": {
       "start": "react-scripts start",
       "build": "react-scripts build",
       "test": "react-scripts test",
       "eject": "react-scripts eject",
       "dev": "nodemon server/index.js",
       "all": "concurrently \"npm start\" \"npm run dev\" "
   }