Viewing github.com/facebook/react/packages/react-devtools-extensions/webpack.config.js

```
'use strict';
```
```
const {resolve} = require('path');
```
```
const Webpack = require('webpack');
```

const TerserPlugin = require('terser-webpack-plugin');

```
const {
```
```
  DARK_MODE_DIMMED_WARNING_COLOR,
```
```
  DARK_MODE_DIMMED_ERROR_COLOR,
```
```
  DARK_MODE_DIMMED_LOG_COLOR,
```
```
  LIGHT_MODE_DIMMED_WARNING_COLOR,
```
```
  LIGHT_MODE_DIMMED_ERROR_COLOR,
```
```
  LIGHT_MODE_DIMMED_LOG_COLOR,
```
```
  GITHUB_URL,
```
```
  getVersionString,
```
```
} = require('./utils');
```

const {resolveFeatureFlags} = require('react-devtools-shared/buildUtils');

```
const NODE_ENV = process.env.NODE_ENV;
```
```
if (!NODE_ENV) {
```
```
  console.error('NODE_ENV not set');
```
```
  process.exit(1);
```
```
}
```
```
const builtModulesDir = resolve(
```
```
  __dirname,
```
```
  '..',
```
```
  '..',
```
```
  'build',
```
```
  'oss-experimental',
```
```
);
```

const __DEV__ = NODE_ENV === 'development';

const DEVTOOLS_VERSION = getVersionString(process.env.DEVTOOLS_VERSION);

const EDITOR_URL = process.env.EDITOR_URL || null;

const LOGGING_URL = process.env.LOGGING_URL || null;

const IS_CHROME = process.env.IS_CHROME === 'true';

const IS_FIREFOX = process.env.IS_FIREFOX === 'true';

const IS_EDGE = process.env.IS_EDGE === 'true';

const featureFlagTarget = process.env.FEATURE_FLAG_TARGET || 'extension-oss';

```
const babelOptions = {
```
```
  configFile: resolve(
```
```
    __dirname,
```
```
    '..',
```
```
    'react-devtools-shared',
```
```
    'babel.config.js',
```
```
  ),
```
```
};
```
```
module.exports = {
```

  mode: __DEV__ ? 'development' : 'production',

  devtool: __DEV__ ? 'cheap-module-source-map' : false,

```
  entry: {
```

    background: './src/background/index.js',

    backendManager: './src/contentScripts/backendManager.js',

    fileFetcher: './src/contentScripts/fileFetcher.js',

```
    main: './src/main/index.js',
```
```
    panel: './src/panel.js',
```

    proxy: './src/contentScripts/proxy.js',

    prepareInjection: './src/contentScripts/prepareInjection.js',

    renderer: './src/contentScripts/renderer.js',

    installHook: './src/contentScripts/installHook.js',

```
  },
```
```
  output: {
```
```
    path: __dirname + '/build',
```
```
    publicPath: '/build/',
```
```
    filename: '[name].js',
```
```
    chunkFilename: '[name].chunk.js',
```
```
  },
```
```
  node: {
```
```
    global: false,
```
```
  },
```
```
  resolve: {
```
```
    alias: {
```

      react: resolve(builtModulesDir, 'react'),

      'react-debug-tools': resolve(builtModulesDir, 'react-debug-tools'),

      'react-devtools-feature-flags': resolveFeatureFlags(featureFlagTarget),

      'react-dom/client': resolve(builtModulesDir, 'react-dom/client'),

      'react-dom': resolve(builtModulesDir, 'react-dom'),

      'react-is': resolve(builtModulesDir, 'react-is'),

      scheduler: resolve(builtModulesDir, 'scheduler'),

```
    },
```
```
  },
```
```
  optimization: {
```
```
    minimize: !__DEV__,
```
```
    minimizer: [
```
```
      new TerserPlugin({
```
```
        terserOptions: {
```
```
          compress: {
```
```
            unused: true,
```
```
            dead_code: true,
```
```
          },
```
```
          mangle: {
```
```
            keep_fnames: true,
```
```
          },
```
```
          format: {
```
```
            comments: false,
```
```
          },
```
```
        },
```
```
        extractComments: false,
```
```
      }),
```
```
    ],
```
```
  },
```
```
  plugins: [
```
```
    new Webpack.ProvidePlugin({
```
```
      process: 'process/browser',
```
```
      Buffer: ['buffer', 'Buffer'],
```
```
    }),
```
```
    new Webpack.DefinePlugin({
```
```
      __DEV__,
```
```
      __EXPERIMENTAL__: true,
```
```
      __EXTENSION__: true,
```
```
      __PROFILE__: false,
```
```
      __TEST__: NODE_ENV === 'test',
```
```
      __IS_CHROME__: IS_CHROME,
```
```
      __IS_FIREFOX__: IS_FIREFOX,
```
```
      __IS_EDGE__: IS_EDGE,
```

      'process.env.DEVTOOLS_PACKAGE': `"react-devtools-extensions"`,

      'process.env.DEVTOOLS_VERSION': `"${DEVTOOLS_VERSION}"`,

      'process.env.EDITOR_URL': EDITOR_URL != null ? `"${EDITOR_URL}"` : null,

      'process.env.GITHUB_URL': `"${GITHUB_URL}"`,

      'process.env.LOGGING_URL': `"${LOGGING_URL}"`,

      'process.env.NODE_ENV': `"${NODE_ENV}"`,

      'process.env.DARK_MODE_DIMMED_WARNING_COLOR': `"${DARK_MODE_DIMMED_WARNING_COLOR}"`,

      'process.env.DARK_MODE_DIMMED_ERROR_COLOR': `"${DARK_MODE_DIMMED_ERROR_COLOR}"`,

      'process.env.DARK_MODE_DIMMED_LOG_COLOR': `"${DARK_MODE_DIMMED_LOG_COLOR}"`,

      'process.env.LIGHT_MODE_DIMMED_WARNING_COLOR': `"${LIGHT_MODE_DIMMED_WARNING_COLOR}"`,

      'process.env.LIGHT_MODE_DIMMED_ERROR_COLOR': `"${LIGHT_MODE_DIMMED_ERROR_COLOR}"`,

      'process.env.LIGHT_MODE_DIMMED_LOG_COLOR': `"${LIGHT_MODE_DIMMED_LOG_COLOR}"`,

```
    }),
```
```
  ],
```
```
  module: {
```
```
    defaultRules: [
```
```
      {
```
```
        type: 'javascript/auto',
```
```
        resolve: {},
```
```
      },
```
```
      {
```
```
        test: /\.json$/i,
```
```
        type: 'json',
```
```
      },
```
```
    ],
```
```
    rules: [
```
```
      {
```
```
        test: /\.worker\.js$/,
```
```
        use: [
```
```
          {
```

            loader: 'workerize-loader',

```
            options: {
```
```
              inline: true,
```
```
              name: '[name]',
```
```
            },
```
```
          },
```
```
          {
```
```
            loader: 'babel-loader',
```
```
            options: babelOptions,
```
```
          },
```
```
        ],
```
```
      },
```
```
      {
```
```
        test: /\.js$/,
```
```
        loader: 'babel-loader',
```
```
        options: babelOptions,
```
```
      },
```
```
      {
```
```
        test: /\.css$/,
```
```
        use: [
```
```
          {
```
```
            loader: 'style-loader',
```
```
          },
```
```
          {
```
```
            loader: 'css-loader',
```
```
            options: {
```
```
              sourceMap: true,
```
```
              modules: true,
```

              localIdentName: '[local]___[hash:base64:5]',

```
            },
```
```
          },
```
```
        ],
```
```
      },
```
```
    ],
```
```
  },
```
```
};
```

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