1、cnpm install create-react-app -g
2、我做的是贝贝
create-react-app beibei
3、安装好了就是这个亚子的
cb beibei 进入这个文件 然后yarn start 开启看看能不能正常运行

安装依赖：

代码：

add react-router-dom redux react-redux redux-thunk redux-actions styled-components react-loadable whatwg-fetch qs

开发环境依赖：

创建文件夹

代码：

yarn add react-app-rewired customize-cra babel-plugin-import http-proxy-middleware --dev

更改package.json文件

新建config-overrides.js文件
代码：

 const { override, addWebpackAlias } = require('customize-cra');
 const path = require("path");
module.exports = override(
  
    //别名配置
    addWebpackAlias({        
        ["@"]:path.resolve(__dirname,"./src"),
        ["@actions"]:path.resolve(__dirname,"./src/actions"),
        ["@api"]:path.resolve(__dirname,"./src/api"),
        ["@common"]:path.resolve(__dirname,"./src/common"),
        ["@components"]:path.resolve(__dirname,"./src/components"),
        ["@layout"]:path.resolve(__dirname,"./src/layout"),
        ["@pages"]:path.resolve(__dirname,"./src/pages"),
        ["@router"]:path.resolve(__dirname,"./src/router"),
        ["@static"]:path.resolve(__dirname,"./src/static"),
        ["@store"]:path.resolve(__dirname,"./src/store"),
        ["@utils"]:path.resolve(__dirname,"./src/utils"),
        ["@lib"]:path.resolve(__dirname,"./src/lib"),
    })
);

创建setupProxy.js文件（跨域用的）
代码：

const proxy = require("http-proxy-middleware");

module.exports = (app)=>{
    app.use(proxy("/martgoods",{
        target:"https://dsapi.beibei.com",
        changeOrigin:true,
    }))
}