create-react-app 2.0中使用antd(eject)

早些时候CRA(create-react-app)升级到2.0.3的时候, react-app-rewired没有跟着升级, 致使项目没法启动, 因而乎直接eject 开始改造项目.

查看版本

> create-react-app --version
2.0.3

建立项目

create-react-app my-project
cd my-project
yarn eject # 输入 y

目前为止项目目录结构, 忽略node_modules这个黑洞

├── README.md
├── config
│   ├── env.js
│   ├── jest
│   │   ├── cssTransform.js
│   │   └── fileTransform.js
│   ├── paths.js
│   ├── webpack.config.js
│   └── webpackDevServer.config.js
├── package.json
├── public
│   ├── favicon.ico
│   ├── index.html
│   └── manifest.json
├── scripts
│   ├── build.js
│   ├── start.js
│   └── test.js
├── src
│   ├── App.css
│   ├── App.js
│   ├── App.test.js
│   ├── index.css
│   ├── index.js
│   ├── logo.svg
│   └── serviceWorker.js
└── yarn.lock

安装依赖

yarn add antd
yarn add babel-plugin-import less less-loader @babel/plugin-proposal-decorators -D

CRA eject以后package.json里面没有区分devDependencies 和 dependencies, 可是不影响使用

由于antd是使用的less, CRA默认不支持, 因此须要改下默认的webpack配置, config/webpack.config.js

首先修改babel配置

我的习惯使用babelrc, 因此把babel-loader options中babelrc的值改成true, 增长.babelrc文件

{
  "presets": [
    "react-app"
  ],
  "plugins": [
    [
      "import",
      {
        "libraryName": "antd",
        "libraryDirectory": "lib",
        "style": true
      },
      "ant"
    ],
    [
      "@babel/plugin-proposal-decorators", // 启用装饰器
      {
        "legacy": true
      }
    ]
  ]
}

参照默认的sass配置, 增长less配置

const sassRegex = /\.(scss|sass)$/;
const sassModuleRegex = /\.module\.(scss|sass)$/;

const lessRegex = /\.less$/;
const lessModuleRegex = /\.module\.less$/;

在module>rules中添加规则

// sass rule
//...
            {
              test: lessRegex,
              exclude: lessModuleRegex,
              use: getStyleLoaders(
                {
                  importLoaders: 2,
                  sourceMap: isEnvProduction && shouldUseSourceMap
                },
                'less-loader',
                {
                  javascriptEnabled: true
                }
              ),
              sideEffects: true
            },
            {
              test: lessModuleRegex,
              use: getStyleLoaders(
                {
                  importLoaders: 2,
                  sourceMap: isEnvProduction && shouldUseSourceMap,
                  modules: true,
                  getLocalIdent: getCSSModuleLocalIdent
                },
                'less-loader',
                {
                  javascriptEnabled: true
                }
              )
            }
// file loader

至此基本项目虽然已经基本完成, 可是若是你是使用less版本比较高, 项目是没法运行的
参考issue
须要改造getStyleLoaders函数, 增长第三个参数otherConfig, 就是上面代码中的 javascriptEnabled: true

const getStyleLoaders = (cssOptions, preProcessor, otherConfig) => {
    const loaders = [
      isEnvDevelopment && require.resolve('style-loader'),
      isEnvProduction && {
        loader: MiniCssExtractPlugin.loader,
        options: Object.assign({}, shouldUseRelativeAssetPaths ? { publicPath: '../../' } : undefined)
      },
      {
        loader: require.resolve('css-loader'),
        options: cssOptions
      },
      {
        loader: require.resolve('postcss-loader'),
        options: {
          ident: 'postcss',
          plugins: () => [
            require('postcss-flexbugs-fixes'),
            require('postcss-preset-env')({
              autoprefixer: {
                flexbox: 'no-2009'
              },
              stage: 3
            })
          ],
          sourceMap: isEnvProduction && shouldUseSourceMap
        }
      }
    ].filter(Boolean);
    if (preProcessor) {
      loaders.push({
        loader: require.resolve(preProcessor),
        options: {
          sourceMap: isEnvProduction && shouldUseSourceMap,
          ...otherConfig
        }
      });
    }
    return loaders;
  };

这样修改以后, 自定义主题modifyVars也能够写在otherConfig中, 一箭双雕, 很少赘述.

至此项目👌

优化完善, 启用dll

关于dll的利弊再也不赘述, 这里只是说明我用的方法, 也不详细展开, 每一个人的项目可能都不同

安装插件

yarn add clean-webpack-plugin webpack-cli add-asset-html-webpack-plugin -D

在config/paths.js exports对象中增长一行kv

appDll: resolveApp("dll"),

增长config/webpack.dll.conf.js文件

const paths = require('./paths');
const path = require('path');
const webpack = require('webpack');
const CleanWebpackPlugin = require('clean-webpack-plugin');

const vendors = [
  'react',
  'react-dom'
];

module.exports = {
  mode: 'production',
  performance: {
    hints: false
  },
  output: {
    path: paths.appDll,
    publicPath: paths.servedPath,
    filename: '[name].[hash].dll.js',
    library: '[name]_[hash]'
  },
  entry: {
    vendor: vendors
  },
  plugins: [
    new CleanWebpackPlugin([paths.appDll], {
      root: paths.appPath, // 根目录
      verbose: true, // 开启在控制台输出信息
      dry: false // 启用删除文件
    }),
    new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),

    new webpack.DllPlugin({
      path: path.join(paths.appDll, '[name]-manifest.json'),
      name: '[name]_[hash]'
    })
  ]
};

package.json增长dll 脚本

"dll": "webpack --progress --config config/webpack.dll.conf.js"

运行 yarn dll打包vendor在dll文件夹中

生产模式使用dll, 修改webpack.conf.js, 增长assets插件和dllreference插件

...
const AddAssetHtmlPlugin = require("add-asset-html-webpack-plugin");
....

plugins: {
    ...
    ...
    isEnvProduction &&
        new webpack.DllReferencePlugin({
          manifest: require('../dll/vendor-manifest.json')
        }),

      isEnvProduction &&
        new AddAssetHtmlPlugin({
          filepath: path.resolve(paths.appDll, '*.js'),
          includeSourcemap: false
        }),

}

至此结束, 验证效果

yarn build

build 文件夹结构

├── asset-manifest.json
├── favicon.ico
├── index.html
├── manifest.json
├── precache-manifest.8175e98134227f2327b88338d3024239.js
├── service-worker.js
├── static
│   ├── css
│   │   ├── 1.83e366fa.chunk.css
│   │   ├── 1.83e366fa.chunk.css.map
│   │   ├── main.c7ff46e9.chunk.css
│   │   └── main.c7ff46e9.chunk.css.map
│   ├── js
│   │   ├── 1.860809fa.chunk.js
│   │   ├── 1.860809fa.chunk.js.map
│   │   ├── main.0df678d7.chunk.js
│   │   ├── main.0df678d7.chunk.js.map
│   │   ├── runtime~main.229c360f.js
│   │   └── runtime~main.229c360f.js.map
│   └── media
│       └── logo.5d5d9eef.svg
└── vendor.52ec4f1c0bead1c1a489.dll.js

本地运行serve -s build, 项目能正常显示, build文件夹下有vendor.hash.dll.js则说明配置成.