关于react.js:更骚的createreactapp开发环境配置craco

应用 CRA 脚手架创立的我的项目，如果想要批改编译配置，通常可能会抉择 npm run eject 弹出配置后魔改。然而，eject 是不可逆操作，弹出配置后，你将无奈追随官网的脚步去降级我的项目的 react-script 版本。

如果想要无 eject 重写 CRA 配置，目前成熟的是上面这几种形式

通过 CRA 官网反对的 --scripts-version 参数，创立我的项目时应用本人重写过的 react-scripts 包
应用 react-app-rewired + customize-cra 组合笼罩配置
应用 craco 笼罩配置

第二种形式绝对第三种略简单一些，我本人很有领会并且咱们留神到最新的 AntDesign4 官网也开始举荐 craco 了，那咱们还等什么还不快口头起来，明天次要在这里具体讨论一下 craco 的应用，也不便大家给出更好的倡议。

首先，应用 create-react-app 创立一个我的项目，这里咱们命名为 my-project

npx create-react-app my-project

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

3、批改 package.json 中的 scripts

{
  "scripts":{
    "start": "set PORT=5000 && craco start FAST_REFRESH=true",
    "build": "set GENERATE_SOURCEMAP=false && craco build",
    "analyzer": "env NODE_ENV=production BUILD_ANALYZER=true yarn start",
    "test": "craco test"
  }
}

4、我的项目根目录创立 craco.config.js 文件

/* craco.config.js */

module.exports = {...}

下面用到了几个环境变量：
PORT 启动端口
GENERATE_SOURCEMAP 打包时是否生成 sourceMap
BUILD_ANALYZER 文件形式输入编译剖析

根底的配置到此实现了，接下来是解决各种配置的笼罩，残缺的 craco.config.js 配置文件构造，能够在 craco 官网的文档中具体查问：Configuration Overview。

尽管能够在 configure 中定义 babel 配置，但 craco 也提供了快捷的形式独自去书写，增加 @babel/preset-env 配置示例如下：

/* craco.config.js */

module.exports = {
  babel: {
    presets: [
      [
        '@babel/preset-env',
        {
          modules: false, // 对 ES6 的模块文件不做转化，以便应用 tree shaking、sideEffects 等
          useBuiltIns: 'entry', // browserslist 环境不反对的所有垫片都导入
          // https://babeljs.io/docs/en/babel-preset-env#usebuiltins
          // https://github.com/zloirock/core-js/blob/master/docs/2019-03-19-core-js-3-babel-and-a-look-into-the-future.md
          corejs: {
            version: 3, // 应用 core-js@3
            proposals: true,
          },
        },
      ],
    ],
    plugins: [
        // 配置 babel-plugin-import
        ['import', { libraryName: 'antd', libraryDirectory: 'es', style: true}, 'antd'],
        // 配置解析器
       ["@babel/plugin-proposal-decorators", { "legacy": true}],
         ["@babel/plugin-proposal-class-properties", { "loose": true}],
       ["babel-plugin-styled-components", { "displayName": true}]
    ],
       loaderOptions: {},
       loaderOptions: (babelLoaderOptions, { env, paths}) => {return babelLoaderOptions;}
    
  },
}

new WebpackBar({profile: true}),
new CircularDependencyPlugin({
  exclude: /node_modules/,
  include: /src/,
  failOnError: true,
  allowAsyncCycles: false,
  cwd: process.cwd()})

const SimpleProgressWebpackPlugin = require('simple-progress-webpack-plugin')
module export = {
  webpack: {

    plugins: [
      // 查看打包的进度
      new SimpleProgressWebpackPlugin()]
  }
}

module.exports = {
  webpack: {
    configure: (webpackConfig, {env, paths}) => {
      // paths.appPath='public'
      paths.appBuild = 'dist'
      webpackConfig.output = {
        ...webpackConfig.output,
          // ...{//   filename: whenDev(() => 'static/js/bundle.js', 'static/js/[name].js'),
          //   chunkFilename: 'static/js/[name].js'
          // },
          path: path.resolve(__dirname, 'dist'), // 批改输入文件目录
          publicPath: '/'
      }
      return webpackConfig
    }
  }
}

如果感觉繁琐也能够间接应用 webpack 进行 configure 笼罩、webpackConfig 的信息大略有这么多：

启动热更新如何防止频繁刷新
罕用的热更新计划 react-hot-loader、craco 也帮咱们提供了两种craco-plugin-react-hot-reload、craco-fast-refresh

`react-hot-loader`配置如下(传送门)

step1：webpack.config.js 中引入别名配置解除相干正告
yarn add @hot-loader/react-dom
module.exports = {
  // ...
  resolve: {
    alias: {'react-dom': '@hot-loader/react-dom',},
  },
};
step2：注入援用 App.js
import {hot} from 'react-hot-loader/root'
function App {
    return (<div>ceshi</div>)
}
export default hot(App)

`craco-plugin-react-hot-reload`配置如下(传送门)

/* craco.config.js */
const reactHotReloadPlugin = require('craco-plugin-react-hot-reload')
const reactHotReloadPlugin = require('craco-plugin-react-hot-reload')
module.exports = {
  plugins: [{plugin: reactHotReloadPlugin}]
}

`craco-fast-refresh` 配置如下(传送门)

这是最近发现的新 craco plugin，绝对于 react-hot-loader 好用得多，零配置，不须要批改我的项目代码，据说性能也更好。

step1：减少插件
/* craco.config.js */
const FastRefreshCracoPlugin = require('craco-fast-refresh')
module.exports = () => {
  return {
    plugins: [{plugin: FastRefreshCracoPlugin}],
  };
};
step2：注入援用 App.js
import React from 'react'
import {hot} from 'react-hot-loader'
const App = () => <div>Hello World!</div>

export default hot(module)(App)

配置 antd 主题色彩可随便对以下计划就行选取

联合`lessOptions`

step1：运行 yarn add craco-less
step2：引入 const CracoLessPlugin = require('craco-less')
step3：配置
{
  plugin: CracoLessPlugin,
  options: {
    lessLoaderOptions: {
      lessOptions: {
        modifyVars: {'@primary-color': '#1DA57A'},
        javascriptEnabled: true
      }
    }
  }
}

同时 craco 也提供了专门的 plugin 来解决 antd 的集成（传送门）配置形式有区别

craco-antd includes:

Less (provided by craco-less)

babel-plugin-import to only import the required CSS, instead of everything

An easy way to customize the theme. Set your custom variables in ./antd.customize.less

step1：yarn add craco-antd
step2：const CracoAntDesignPlugin = require('craco-antd')
step3 
{
  plugin: CracoAntDesignPlugin,
  options: {
    customizeTheme: {'@primary-color': '#FF061C'}
  }
}

针对customizeTheme 如果想独自抽离可采取如下计划

step1：新建 antd.customize.less 文件
---------
@primary-color: #FF061C;
---------
step2：读取模式
{
  plugin: CracoAntDesignPlugin,
  options: {customizeThemeLessPath: path.join(__dirname,"antd.customize.less")}
 }

绝对来讲应用会更简洁一些，举荐应用。

的确可能在不 eject 弹出配置的状况下，可能自定义所有的 cra 构建配置，之前进行了具体的阐明，有这方面的需要能够去看看 (传送门)。因而在后续的编码中，咱们能够轻易应用这两种形式构建本人的 webpack 配置。
留神：_configure 配置和_craco 配置会互斥审慎应用

以下，是我整顿残缺的 craco.config.js 配置，相应的 demo 不便参照
craco 还提供一些其余 plugin 具体依据理论状况自行退出(传送门)

/* craco.config.js */
/**
 * TODO: 辨别环境 —— NODE_ENV
 * - whenDev ☞ process.env.NODE_ENV === 'development'
 * - whenTest ☞ process.env.NODE_ENV === 'test'
 * - whenProd ☞ process.env.NODE_ENV === 'production'
 */
const {when, whenDev, whenProd, whenTest, ESLINT_MODES, POSTCSS_MODES} = require('@craco/craco')
const webpack = require('webpack')
const CracoLessPlugin = require('craco-less')
const CracoAntDesignPlugin = require('craco-antd')
const CracoVtkPlugin = require('craco-vtk')
const WebpackBar = require('webpackbar')
const CircularDependencyPlugin = require('circular-dependency-plugin')
const FastRefreshCracoPlugin = require('craco-fast-refresh')
const TerserPlugin = require('terser-webpack-plugin')
const AntdDayjsWebpackPlugin = require('antd-dayjs-webpack-plugin')
const {BundleAnalyzerPlugin} = require('webpack-bundle-analyzer')
const CompressionWebpackPlugin = require('compression-webpack-plugin')
const DashboardPlugin = require('webpack-dashboard/plugin')
const SimpleProgressWebpackPlugin = require('simple-progress-webpack-plugin')

const path = require('path')

// 判断编译环境是否为生产
const isBuildAnalyzer = process.env.BUILD_ANALYZER === 'true'

const pathResolve = pathUrl => path.join(__dirname, pathUrl)

module.exports = {
  webpack: {
    // 别名配置
    alias: {'@': pathResolve('.'),
      src: pathResolve('src'),
      assets: pathResolve('src/assets'),
      common: pathResolve('src/common'),
      components: pathResolve('src/components'),
      hooks: pathResolve('src/hooks'),
      pages: pathResolve('src/pages'),
      store: pathResolve('src/store'),
      utils: pathResolve('src/utils')
        // 此处是一个示例，理论可依据各自需要配置
    },
    plugins: [
      // webpack 构建进度条
      new WebpackBar({profile: true}),
      new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
      // 查看打包的进度
      new SimpleProgressWebpackPlugin(),
      // 工夫转换工具采取 day 替换 moment
      new AntdDayjsWebpackPlugin(),
      // // 新增模块循环依赖检测插件
      ...whenDev(() => [
          new CircularDependencyPlugin({
            exclude: /node_modules/,
            include: /src/,
            failOnError: true,
            allowAsyncCycles: false,
            cwd: process.cwd()}),
          // webpack-dev-server 强化插件
          new DashboardPlugin(),
          new webpack.HotModuleReplacementPlugin()], []),
      /**
       * 编译产物剖析
       *  - https://www.npmjs.com/package/webpack-bundle-analyzer
       * 新增打包产物剖析插件
       */
      ...when(isBuildAnalyzer, () => [
          new BundleAnalyzerPlugin({
            analyzerMode: 'static', // html 文件形式输入编译剖析
            openAnalyzer: false,
            reportFilename: path.resolve(__dirname, `analyzer/index.html`)
          })
        ], []),
      ...whenProd(() => [
          // new TerserPlugin({
          //   // sourceMap: true, // Must be set to true if using source-maps in production
          //   terserOptions: {
          //     ecma: undefined,
          //     parse: {},
          //     compress: {
          //       warnings: false,
          //       drop_console: true, // 生产环境下移除控制台所有的内容
          //       drop_debugger: true, // 移除断点
          //       pure_funcs: ['console.log'] // 生产环境下移除 console
          //     }
          //   }
          // }),
          // 打压缩包
          new CompressionWebpackPlugin({
            algorithm: 'gzip',
            test: new RegExp('\\.(' + ['js', 'css'].join('|') + ')$'),
            threshold: 1024,
            minRatio: 0.8
          })
        ], [])
    ],
    // 抽离专用模块
    optimization: {
      splitChunks: {
        cacheGroups: {
          commons: {
            chunks: 'initial',
            minChunks: 2,
            maxInitialRequests: 5,
            minSize: 0
          },
          vendor: {
            test: /node_modules/,
            chunks: 'initial',
            name: 'vendor',
            priority: 10,
            enforce: true
          }
        }
      }
    },
    /**
     * 重写 webpack 任意配置
     *  - configure 可能重写 webpack 相干的所有配置，然而，依然举荐你优先浏览 craco 提供的快捷配置，把解决不了的配置放到 configure 里解决；*  - 这里抉择配置为函数，与间接定义 configure 对象形式互斥；*/
    configure: (webpackConfig, {env, paths}) => {
      // paths.appPath='public'
      paths.appBuild = 'dist' // 配合输入打包批改文件目录
        // webpackConfig 中能够解构出你想要的参数比方 mode、devtool、entry 等等，更多信息请查看 webpackConfig.json 文件
        /**
         * 批改 output
         */
      webpackConfig.output = {
          ...webpackConfig.output,
            // ...{//   filename: whenDev(() => 'static/js/bundle.js', 'static/js/[name].js'),
            //   chunkFilename: 'static/js/[name].js'
            // },
            path: path.resolve(__dirname, 'dist'), // 批改输入文件目录
            publicPath: '/'
        }
        /**
         * webpack split chunks
         */
        // webpackConfig.optimization.splitChunks = {
        //   ...webpackConfig.optimization.splitChunks,
        //   ...{
        //     chunks: 'all',
        //     name: true
        //   }
        // }
        // 返回重写后的新配置
      return webpackConfig
    }
  },
  babel: {presets: [],
    plugins: [
      // AntDesign 按需加载
      ['import', {
        libraryName: 'antd',
        libraryDirectory: 'es',
        style: true
      }, 'antd'],
      ['@babel/plugin-proposal-decorators', {legacy: true}] // 用来反对装璜器
    ],
    loaderOptions: {},
    loaderOptions: (babelLoaderOptions, {env, paths}) => {return babelLoaderOptions}
  },
  /**
   * 新增 craco 提供的 plugin
   */
  plugins: [
    // 热更新
    ...whenDev(() => [{plugin: FastRefreshCracoPlugin}, {plugin: CracoVtkPlugin()
      }, {plugin: new AntdDayjsWebpackPlugin()
      }], []),
    // 计划 1、配置 Antd 主题 less
    // {
    //   plugin: CracoLessPlugin,
    //   options: {
    //     lessLoaderOptions: {
    //       lessOptions: {//         modifyVars: { '@primary-color': '#1DA57A'},
    //         javascriptEnabled: true
    //       }
    //     }
    //   }
    // },
    // 计划 2、配置 Antd 主题
    // {
    //   plugin: CracoAntDesignPlugin,
    //   options: {
    //     customizeTheme: {
    //       '@primary-color': '#FF061C'
    //     }
    //   }
    // },
    // 计划 3、配置 Antd 主题
    {
      plugin: CracoAntDesignPlugin,
      options: {
        customizeThemeLessPath: path.join(
          __dirname,
          "antd.customize.less"
        ),
      },
    },
  ],
  devServer: {
    port: 9000,
    proxy: {
      '/api': {
        target: 'https://placeholder.com/',
        changeOrigin: true,
        secure: false,
        xfwd: false,
      }
    }
  }
}

同时咱们也能够看一下官网给咱们裸露了哪些 Api

const {when, whenDev, whenProd, whenTest, ESLINT_MODES, POSTCSS_MODES} = require("@craco/craco");

module.exports = {reactScriptsVersion: "react-scripts" /* (default value) */,
    style: {
        modules: {localIdentName: ""},
        css: {loaderOptions: { /* Any css-loader configuration options: https://github.com/webpack-contrib/css-loader. */},
            loaderOptions: (cssLoaderOptions, { env, paths}) => {return cssLoaderOptions;}
        },
        sass: {loaderOptions: { /* Any sass-loader configuration options: https://github.com/webpack-contrib/sass-loader. */},
            loaderOptions: (sassLoaderOptions, { env, paths}) => {return sassLoaderOptions;}
        },
        postcss: {mode: "extends" /* (default value) */ || "file",
            plugins: [],
            env: {autoprefixer: { /* Any autoprefixer options: https://github.com/postcss/autoprefixer#options */},
                stage: 3, /* Any valid stages: https://cssdb.org/#staging-process. */
                features: {/* Any CSS features: https://preset-env.cssdb.org/features. */}
            },
            loaderOptions: {/* Any postcss-loader configuration options: https://github.com/postcss/postcss-loader. */},
            loaderOptions: (postcssLoaderOptions, { env, paths}) => {return postcssLoaderOptions;}
        }
    },
    eslint: {enable: true /* (default value) */,
        mode: "extends" /* (default value) */ || "file",
        configure: {/* Any eslint configuration options: https://eslint.org/docs/user-guide/configuring */},
        configure: (eslintConfig, { env, paths}) => {return eslintConfig;},
        loaderOptions: {/* Any eslint-loader configuration options: https://github.com/webpack-contrib/eslint-loader. */},
        loaderOptions: (eslintOptions, { env, paths}) => {return eslintOptions;}
    },
    babel: {presets: [],
        plugins: [],
        loaderOptions: {/* Any babel-loader configuration options: https://github.com/babel/babel-loader. */},
        loaderOptions: (babelLoaderOptions, { env, paths}) => {return babelLoaderOptions;}
    },
    typescript: {enableTypeChecking: true /* (default value)  */
    },
    webpack: {alias: {},
        plugins: [],
        configure: {/* Any webpack configuration options: https://webpack.js.org/configuration */},
        configure: (webpackConfig, { env, paths}) => {return webpackConfig;}
    },
    jest: {
        babel: {addPresets: true, /* (default value) */
            addPlugins: true  /* (default value) */
        },
        configure: {/* Any Jest configuration options: https://jestjs.io/docs/en/configuration. */},
        configure: (jestConfig, { env, paths, resolve, rootDir}) => {return jestConfig;}
    },
    devServer: {/* Any devServer configuration options: https://webpack.js.org/configuration/dev-server/#devserver. */},
    devServer: (devServerConfig, { env, paths, proxy, allowedHost}) => {return devServerConfig;},
    plugins: [
        {
            plugin: {overrideCracoConfig: ({ cracoConfig, pluginOptions, context: { env, paths} }) => {return cracoConfig;},
                overrideWebpackConfig: ({webpackConfig, cracoConfig, pluginOptions, context: { env, paths} }) => {return webpackConfig;},
                overrideDevServerConfig: ({devServerConfig, cracoConfig, pluginOptions, context: { env, paths, proxy, allowedHost} }) => {return devServerConfig;},
                overrideJestConfig: ({jestConfig, cracoConfig, pluginOptions, context: { env, paths, resolve, rootDir} }) => {return jestConfig},
            },
            options: {}}
    ]
};

这么多的信息应用起来是不是很爽，想摸索的赶快口头起来共同进步啦

craco 配置
less-loader 官网文档
ant design 官网文档
craco 实际

关于react.js:更骚的createreactapp开发环境配置craco

背景

配置步骤

扩大 babel 配置

检测模块编译状况

察看打包进度

批改打包输入目录

热更新 Hot-loader 扩大

`react-hot-loader`配置如下(传送门)

`craco-plugin-react-hot-reload`配置如下(传送门)

`craco-fast-refresh` 配置如下(传送门)

Antd 自定义主题配置

联合`lessOptions`

Craco 自定义反对

总结

参考

背景

配置步骤

扩大 babel 配置

检测模块编译状况

察看打包进度

批改打包输入目录

热更新 Hot-loader 扩大

react-hot-loader配置如下(传送门)

craco-plugin-react-hot-reload配置如下(传送门)

craco-fast-refresh 配置如下(传送门)

Antd 自定义主题配置

联合lessOptions

Craco 自定义反对

总结

参考

`react-hot-loader`配置如下(传送门)

`craco-plugin-react-hot-reload`配置如下(传送门)

`craco-fast-refresh` 配置如下(传送门)

联合`lessOptions`