cra

const paths = require('react-scripts/config/paths');
paths.appBuild = path.join(path.dirname(paths.appBuild), 'dist'); // 修改打包目录

// Override `create-react-app` default configs for Jest.
const jestConfig = require('./jest.config');

module.exports = {
  jest(config) {
    return { ...config, ...jestConfig };
  },
};

module.exports = function override(config, env) {
  config.module.rules = config.module.rules.map(rule => {
        if (rule.oneOf instanceof Array) {
            return {
                ...rule,
                oneOf: [
                    {
                        test: /\.(svg|png|jpg|jpeg|gif|bmp|tiff)$/i,
                        use: [
                            {
                                loader: 'file-loader',
                                options: {
                                    name: '[path][name]-[hash:8].[ext]'
                                }
                            }
                        ]
                    },
                    ...rule.oneOf
                ]
            };
        }

        return rule;
    });

  return config;
}

Putting react-app-rewired config AFTER customize-cra worked for me. It doesn't work though if I assign an object to config, but works if I fix config line by line. I'm sure there is a more elegant solution.

module.exports = function override(config, env) {
    const APP = process.env.REACT_APP_APP
    const BRAND = process.env.REACT_APP_BRAND

    addWebpackAlias({
        ['@app-config']: path.resolve(__dirname, `./src/brands/${BRAND}/app`),
    })

    config.entry = `./src/${APP}/index.js`
    config.resolve.alias['@app-config'] = path.resolve(__dirname, `./src/brands/${BRAND}`)
    config.resolve.modules = [
        path.join(__dirname, `src/brands/${BRAND}`)
    ].concat(config.resolve.modules)

    return config
};

　　

Can i replace options only for specific plugin without reseting all plugins created by react-app?

const path = require('path');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

module.exports = function override(config, env) {
    if( !config.plugins ) {
        config.plugins = [];
    }

    const miniCssOptions = {
        filename: "[name].[hash].css"
    }
    let miniCssAdded = false;

    if( config.plugins.length ) {
        config.plugins.forEach( p => {
            if( p instanceof MiniCssExtractPlugin) {
                delete p;
                p = new MiniCssExtractPlugin( miniCssOptions );
                miniCssAdded = true;
            }
        })
    }

    if( !miniCssAdded ) {
        config.plugins.push( new MiniCssExtractPlugin( miniCssOptions ) );
    }

    config.plugins.push( new CleanWebpackPlugin() );

    config.plugins.push( new HtmlWebpackPlugin({
        title: 'Caching',
    }) );

    config.output.filename ='static/js/[name].[hash].js';
    config.output.chunkFilename ='static/js/[name].[hash].js';
    config.output.path = path.resolve(__dirname, 'build');

    config.optimization.splitChunks= {
        cacheGroups: {
            vendor: {
                test: /[\\/]node_modules[\\/]/,
                name: 'vendors',
                chunks: 'all',
            }
        }
    }      

    return config;
} 

I think you almost made it. But delete p is NOT a way to delete item from an array. you should use .splice, which can delete items from array and add items in the meantime:

 config.plugins.forEach( (p,i) => {
        if( p instanceof MiniCssExtractPlugin) {
            //delete p;
            config.plugins.splice(i,1, new MiniCssExtractPlugin( miniCssOptions ));
        }
    }) 

https://stackoverflow.com/questions/59045454/react-webpack-config-is-it-possible-to-replace-config-for-only-one-plugin-in-ar?r=SearchResults　　

const path = require('path');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

module.exports = function override(config, env) {
    if( !config.plugins ) {
        config.plugins = [];
    }

    const miniCssOptions = {
        filename: "[name].[hash].css"
    }
    let miniCssAdded = false;

    if( config.plugins.length ) {
        config.plugins.forEach( p => {
            if( p instanceof MiniCssExtractPlugin) {
                delete p;
                p = new MiniCssExtractPlugin( miniCssOptions );
                miniCssAdded = true;
            }
        })
    }

    if( !miniCssAdded ) {
        config.plugins.push( new MiniCssExtractPlugin( miniCssOptions ) );
    }

    config.plugins.push( new CleanWebpackPlugin() );

    config.plugins.push( new HtmlWebpackPlugin({
        title: 'Caching',
    }) );

    config.output.filename ='static/js/[name].[hash].js';
    config.output.chunkFilename ='static/js/[name].[hash].js';
    config.output.path = path.resolve(__dirname, 'build');

    config.optimization.splitChunks= {
        cacheGroups: {
            vendor: {
                test: /[\\/]node_modules[\\/]/,
                name: 'vendors',
                chunks: 'all',
            }
        }
    }      

    return config;
}

"scripts": {
    "format": "prettier --write",
    "start": "PORT=3001 react-app-rewired start",
    "build": "react-app-rewired build",
    "test": "react-app-rewired test"
  },

　　

https://stackoverflow.com/questions/58344625/react-application-production-build-static-folder-path-changes?r=SearchResults

You can use useBabelRc() function of customize-cra and in .babelrc, you can write babel config for antd.

{
  "plugins": ["@babel/plugin-proposal-optional-chaining"]
}

https://medium.com/@adostes/enabling-optional-chaining-in-a-create-react-app-a9f626a515d9

var paths = require('react-scripts-ts/config/paths')

module.exports = function override(config) {
  config.module.rules.push({
    test: /\.(js|jsx)$/,
    include: paths.appSrc,
    loader: require.resolve('babel-loader'),
    options: {
        babelrc: false,
        presets: [require.resolve('babel-preset-react-app')],
        cacheDirectory: true,
    },
  });
  config.module.rules.push({
    test: /\.(ts|tsx)$/,
    include: paths.appSrc,
    loader: ['ts-loader'],
  });

  return config
}

Import typescript file inside javascript file

https://stackoverflow.com/questions/48389087/import-typescript-file-inside-javascript-file?r=SearchResults　　

https://mikebridge.github.io/post/getting-started-typescript-react/　　

How do I change `src` folder to something else in create-react-app

const path = require('path');

module.exports = {
    paths: function (paths, env) {
        paths.appIndexJs = path.resolve(__dirname, 'mysrc/client.js');
        paths.appSrc = path.resolve(__dirname, 'mysrc');
        return paths;
    },
}

https://stackoverflow.com/questions/44448851/how-do-i-change-src-folder-to-something-else-in-create-react-app/54625811?r=SearchResults#54625811

　https://github.com/timarney/react-app-rewired#extended-configuration-options　

module.exports = override(
  config => ({
    ...config,
    output: {
      ...config.output,
      globalObject: 'this',
    },
  }),
  addWebpackModuleRule({
    test: /\.worker\.js$/,
    use: { loader: 'worker-loader' },
  }),
  // addWebpackModuleRule({
  //   test: /\.wasm$/,
  //   use: { loader: 'wasm-loader' },
  // }),
//https://github.com/YumcoderCom/yumgram/blob/master/config-overrides.js

module.exports = {
  webpack (config, env) {
    //  Log current env
    console.log('Current env', env)

    //  Inject global vars
    config.plugins = (config.plugins || []).concat([new webpack.DefinePlugin({
      ...constants[env], ENV: `'${env}'`
    })])

    config = override(
      //  Inject lazy loading for ant design css
      fixBabelImports('import', {
        libraryName: 'antd',
        libraryDirectory: 'es',
        style: true,
      }),
      //  And override styles
      addLessLoader({
        javascriptEnabled: true,
        modifyVars: {
          '@primary-color': '#3DBD7D',
          '@link-color': '#5678a4',
          '@success-color': '#3DBD7D',
          '@warning-color': '#ffaa00',
          '@error-color': '#E94A4C',
          '@border-color-base': '#3DBD7D',
          '@box-shadow-base' : 'none'
        }
      }),
      //  Inject translation
      ...addBabelPlugins('@lingui/babel-plugin-transform-js', '@lingui/babel-plugin-transform-react')
    )(config, env)

    //  Return the webpack config
    return config
  }
}

　　

const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');

module.exports = function override(config, env) {
    config.resolve.plugins = config.resolve.plugins.filter(plugin => !(plugin instanceof ModuleScopePlugin));

    return config;
};

按照 npm 包页上的步骤操作（安装包并在包.json 文件中翻转调用），并使用与此类似的文件：config-overrides.js　　

这将从使用的 WebPack 插件中删除 ModuleScopePlugin，但保留其余内容，并消除弹出的必要性。　　

module.exports = config => {
  const scopePluginIndex = config.resolve.plugins.findIndex(
    ({ constructor }) => constructor && constructor.name === "ModuleScopePlugin"
  );

  config.resolve.plugins.splice(scopePluginIndex, 1);

  return config;
};

配置重写.js
const { removeModuleScopePlugin } = require('customize-cra')

module.exports = removeModuleScopePlugin()

配置重写.js
const ModuleScopePlugin = require("react-dev-utils/ModuleScopePlugin");
const path = require("path");

module.exports = function override(config) {
  config.resolve.plugins.forEach(plugin => {
    if (plugin instanceof ModuleScopePlugin) {
      plugin.allowedFiles.add(path.resolve("./config.json"));
    }
  });

//https://stackoverflow.com/questions/44114436/the-create-react-app-imports-restriction-outside-of-src-directory/58863926?r=SearchResults#
  return config;
};

//Customizing antd Less or Css for create-react-app
function addLessRule(config, env)
{
  const { getLoader, loaderNameMatches } = require("react-app-rewired");

  const fileLoader = getLoader(
    config.module.rules,
    rule => loaderNameMatches(rule, 'file-loader')
  );

  const lessExtension = /\.less$/;
  fileLoader.exclude.push(lessExtension);

  const cssRules = getLoader(
    config.module.rules,
    rule => String(rule.test) === String(/\.css$/)
  );

  var lessModifyVars = {
    'primary-color': '#990000',
    'link-color': '#1DA57A',
    'border-radius-base': '2px',
    'layout-header-background' : '#f0f2f5'
  };

  var lessLoaders = [
    { loader: 'style-loader'} ,
    { loader: 'css-loader' },
    { loader: 'less-loader', options: {
      modifyVars: lessModifyVars
    } }
   ];

  lessRule = {
    test : lessExtension,
    use: lessLoaders,
  }

  config.module["rules"].push( lessRule );
  return config
}
//https://stackoverflow.com/questions/44611056/customizing-antd-less-or-css-for-create-react-app/51109561?r=SearchResults#51109561

//django-webpack-loader not rendering react app using react-app-rewired
var BundleTracker = require('webpack-bundle-tracker');

module.exports = {
  webpack: (config, env) => {

    config.plugins.push(
      new BundleTracker({
        path: __dirname,
        filename: './build/webpack-stats.json'
      }),
    );

    return config;
  },
};
//https://stackoverflow.com/questions/54241751/django-webpack-loader-not-rendering-react-app-using-react-app-rewired?r=SearchResults

//How do I debug a local typescript module used by an app created from create-react-app
/* config-overrides.js */
const rewireAliases = require("react-app-rewire-aliases");
const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');

var path = require("path");

module.exports = function override(config, env) {
  config.module.rules.push({
    test: /\.ts$/,
    use: ["awesome-typescript-loader"],
    enforce: "pre"
  });

  config.resolve.plugins = config.resolve.plugins.filter(plugin => !(plugin instanceof ModuleScopePlugin));

  config = rewireAliases.aliasesOptions({
    "@common": path.resolve(
      __dirname,
      `node_modules/my-common-module/src/index.ts`
    )
  })(config, env);

  return config;
};
//https://stackoverflow.com/questions/57605815/how-do-i-debug-a-local-typescript-module-used-by-an-app-created-from-create-reac/57649317?r=SearchResults#57649317

//Create-react-app + react-app-rewired + typescript + antd
const {
        getLoader,
        injectBabelPlugin
    } = require("react-app-rewired");
    const tsImportPluginFactory = require('ts-import-plugin')

    module.exports = function override(config, env) {
        // do stuff with the webpack config...
        const tsLoader = getLoader(
            config.module.rules,
            rule =>
            rule.loader &&
            typeof rule.loader === 'string' &&
            rule.loader.includes('ts-loader')
        );

        tsLoader.options = {
            getCustomTransformers: () => ({
                before: [
                    tsImportPluginFactory([{
                        libraryDirectory: 'es',
                        libraryName: 'antd',
                        style: 'css',
                    }]),
                ]
            })
        };

        return config;
    };

//https://stackoverflow.com/questions/49698564/create-react-app-react-app-rewired-typescript-antd/50022172?r=SearchResults#50022172

optimization: {
    runtimeChunk: {
      name: 'manifest'
    },
    splitChunks: {
      maxInitialRequests: 10,
      cacheGroups: {
        vendor: {
          test: /(jquery|fastclick|vue.esm.js)/,
          name: 'vendor',
          chunks: 'all'
        },
        common: {
          test: /(\.(png|jpe?g|gif|svg))/,
          name: 'app',
          chunks: 'initial',
          minChunks: 10
        },
        app: {
          test: /(css[\\/]style.css)/,
          name: 'app',
          chunks: 'initial',
          minChunks: 1
        }
      }
    }
  },
//你可以配置optimization,把你想要抽取的css，js，甚至是公用图片都抽取出来，例如：
//https://segmentfault.com/q/1010000017990233/

　　

　　

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