text: const {resolve} = require('path');
  const {DefinePlugin} = require('webpack');
  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('react-devtools-extensions/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', 'node_modules');
  
  const __DEV__ = NODE_ENV === 'development';
  
  const DEVTOOLS_VERSION = getVersionString();
  
  const babelOptions = {
    configFile: resolve(
      __dirname,
      '..',
      'react-devtools-shared',
      'babel.config.js',
    ),
  };
  
  module.exports = {
    mode: __DEV__ ? 'development' : 'production',
    devtool: __DEV__ ? 'cheap-module-eval-source-map' : 'source-map',
    target: 'electron-main',
    entry: {
      standalone: './src/standalone.js',
    },
    output: {
      path: __dirname + '/dist',
      filename: '[name].js',
      library: '[name]',
      libraryTarget: 'commonjs2',
    },
    resolve: {
      alias: {
        react: resolve(builtModulesDir, 'react'),
        'react-debug-tools': resolve(builtModulesDir, 'react-debug-tools'),
        'react-devtools-feature-flags': resolveFeatureFlags('core/standalone'),
        'react-dom': resolve(builtModulesDir, 'react-dom'),
        'react-is': resolve(builtModulesDir, 'react-is'),
        scheduler: resolve(builtModulesDir, 'scheduler'),
      },
    },
    node: {
      // Don't replace __dirname!
      // This would break the standalone DevTools ability to load the backend.
      // see https://github.com/facebook/react-devtools/issues/1269
      __dirname: false,
    },
    plugins: [
      new DefinePlugin({
        __DEV__,
        __EXPERIMENTAL__: true,
        __EXTENSION__: false,
        __PROFILE__: false,
        __TEST__: NODE_ENV === 'test',
        'process.env.DEVTOOLS_PACKAGE': `"react-devtools-core"`,
        'process.env.DEVTOOLS_VERSION': `"${DEVTOOLS_VERSION}"`,
        'process.env.GITHUB_URL': `"${GITHUB_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': `"${LIGHT_MODE_DIMMED_LOG_COLOR}"`,
      }),
    ],
    module: {
      rules: [
        {
          test: /\.worker\.js$/,
          use: [
            {
              loader: 'workerize-loader',
              options: {
                inline: true,
              },
            },
            {
              loader: 'babel-loader',
              options: babelOptions,
            },
          ],
        },
        {
          test: /\.js$/,
          loader: 'babel-loader',
          options: babelOptions,
        },
        {
          test: /\.css$/,
          use: [
            {
              loader: 'style-loader',
            },
            {
              loader: 'css-loader',
              options: {
                // WARNING It's important that we disable CSS source maps for production builds.
                // This causes style-loader to insert styles via a <style> tag rather than URL.createObjectURL,
                // which in turn avoids a nasty Electron/Chromium bug that breaks DevTools in Nuclide.
                // (Calls to URL.createObjectURL seem to crash the webview process.)
                sourceMap: __DEV__,
                modules: true,
                localIdentName: '[local]___[hash:base64:5]',
              },
            },
          ],
        },
      ],
    },
  };
  