react实现按需加载的3种方法

react实现按需加载的3种方法
1.精确加载组件

import Button from 'antd/lib/button'
import 'antd/lib/button/style'

2.暴露配置,配合babel-plugin-import插件实现按需加载
babel-plugin-import是一个用于按需加载组件和样式的babel插件
暴露配置

npm run eject

安装插件

 npm install babel-plugin-import -S

修改package.json

"babel": {
    
    
    "presets": [
      "react-app"
    ],
    "plugins": [
      [
        "import",
        {
    
    
          "libraryName": "antd",
          "libraryDirectory": "es",
          "style":"css"
        }
      ]
    ]
  }

配置完之后直接引入:import {Button} from ‘antd’
3.通过babel-plugin-import+react-app-rewired实现按需加载
react-app-rewired在不用暴露的配置的情况下对webpack配置进行扩展

  //安装插件:
   npm install babel-plugin-import -S
  //修改(添加)config-overrides.js文件
  //引入react-app-rewired添加babel插件的函数
  const {
    
    injetBabelPlugin}=require('react-app-rewired')
  module.exports=function override(config,env){
    
    
 	config=injetBabelPlugin([
 		   [
        "import",
        {
    
    
          "libraryName": "antd",
          "libraryDirectory": "es",
          "style":"css"
        }
      ]
 	],config);
 	return config
 }:

配置完之后直接引入:import {Button} from ‘antd’