create-react-app 引入 antd 及 解决 antd 样式无法显示的bug

方案一： npm run eject 暴露所有内建的配置 

安装组件库

yarn add antd babel-plugin-import

根目录下新建.roadhogrc文件（别忘了前面的点，这是roadhog工具的配置文件，下面的代码用于加载上一个命令安装的import插件），写入：

{
  "extraBabelPlugins": [
    ["import", {
      "libraryName": "antd",
      "libraryDirectory": "lib",
      "style": "css"
    }]
  ]
}

antd配置

修改 webpack.config.dev.js 和 webpack.config.prod.js文件,这里以webpack.config.dev.js举例，

webpack.config.prod.js一样配置即可：

// Process JS with Babel.
{
  test: /\.(js|jsx|mjs)$/,
  include: paths.appSrc,
  loader: require.resolve('babel-loader'),
  options: {
    // 改动: 添加 antd 按需加载文件处理插件
    plugins: [
      ['react-html-attrs'],//添加babel-plugin-react-html-attrs组件的插件配置
      // 引入样式为 css
      ['import', { libraryName: 'antd', style: 'css' }],
      // 改动: 引入样式为 less
      //  ['import', { libraryName: 'antd', style: true }],
    ],
    // This is a feature of `babel-loader` for webpack (not Babel itself).
    // It enables caching results in ./node_modules/.cache/babel-loader/
    // directory for faster rebuilds.
    cacheDirectory: true,
  },
},

引入模块如下：

  // scr/App.js
  import React, { Component } from 'react';
- import Button from 'antd/lib/button';
+ import { Button } from 'antd';
  import './App.css';

方案二：React-app-rewired（一个对 create-react-app 进行自定义配置的社区解决方案）

1. 安装react-app-rewired

npm install –save-dev react-app-rewired

2.修改package.json启动项

/* package.json */
"scripts": {
   "start": "react-app-rewired start",
   "build": "react-app-rewired build",
   "test": "react-app-rewired test --env=jsdom",
}

3.在项目根目录创建一个 config-overrides.js 用于修改默认配置。

module.exports = function override(config, env) {
  // do stuff with the webpack config...
  return config;
};

4.使用babel-plugin-import实现Antd按需加载，修改config-overrides.js

npm install –save-dev babel-plugin-import

config-overrides.js

/* config-overrides.js */
const { injectBabelPlugin } = require('react-app-rewired');
module.exports = function override(config, env) {
    config = injectBabelPlugin(['import', { libraryName: 'antd', style: 'css'}], config);
    return config;
};

5.使用react-app-rewire-less配置Less

npm install –save-dev react-app-rewire-less

config-overrides.js

/* config-overrides.js */
const { injectBabelPlugin } = require('react-app-rewired');
const rewireLess = require('react-app-rewire-less');

module.exports = function override(config, env) {
   config = injectBabelPlugin(['import', { libraryName: 'antd', style: true }], config);
   config = rewireLess.withLoaderOptions({
     modifyVars: { "@primary-color": "#1DA57A" },
   })(config, env);
    return config;
};

我遇到的问题： 1. \__DEV__ is not defined.

npm install –save-dev react-app-rewire-defind-plugin

config-overrides.js

/* config-overrides.js */
const { injectBabelPlugin } = require('react-app-rewired');
const rewireLess = require('react-app-rewire-less');
const rewireDefinePlugin = require('react-app-rewire-define-plugin');

module.exports = function override(config, env) {
    config = injectBabelPlugin(['import', { libraryName: 'antd', style: true }], config);
    config = rewireLess.withLoaderOptions({
        modifyVars: { "@primary-color": "#1DA57A" },
    })(config, env);
    config = rewireDefinePlugin(config, env, {
        __DEV__: false
    });
    return config;
};

注：在执行 yarn build 进行打包部署后，antd样式没有加载进去

解决方案：生产部署增加对antd的支持

// Process JS with Babel.
{
  test: /\.(js|jsx|mjs)$/,
  include: paths.appSrc,
  loader: require.resolve('babel-loader'),
  options: {
    // 改动: 添加 antd 按需加载文件处理插件
    plugins: [
      ['react-html-attrs'],//添加babel-plugin-react-html-attrs组件的插件配置
      // 引入样式为 css
      ['import', { libraryName: 'antd', style: 'css' }],
      // 改动4: 引入样式为 less
      //  ['import', { libraryName: 'antd', style: true }],
    ],
    compact: true,
  },
},