text: 'use strict';
  
  const fs = require('fs');
  const path = require('path');
  const webpack = require('webpack');
  const resolve = require('resolve');
  const PnpWebpackPlugin = require('pnp-webpack-plugin');
  const HtmlWebpackPlugin = require('html-webpack-plugin');
  const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
  const InlineChunkHtmlPlugin = require('react-dev-utils/InlineChunkHtmlPlugin');
  const TerserPlugin = require('terser-webpack-plugin');
  const MiniCssExtractPlugin = require('mini-css-extract-plugin');
  const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
  const safePostCssParser = require('postcss-safe-parser');
  const ManifestPlugin = require('webpack-manifest-plugin');
  const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
  const WorkboxWebpackPlugin = require('workbox-webpack-plugin');
  const WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');
  const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
  const paths = require('./paths');
  const modules = require('./modules');
  const getClientEnvironment = require('./env');
  const ModuleNotFoundPlugin = require('react-dev-utils/ModuleNotFoundPlugin');
  const ForkTsCheckerWebpackPlugin = require('react-dev-utils/ForkTsCheckerWebpackPlugin');
  const typescriptFormatter = require('react-dev-utils/typescriptFormatter');
  const AddAssetHtmlPlugin = require('add-asset-html-webpack-plugin');
  const postcssNormalize = require('postcss-normalize');
  const appPackageJson = require(paths.appPackageJson);
  const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
  
  // Source maps are resource heavy and can cause out of memory issue for large source files.
  const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== 'false';
  // Some apps do not need the benefits of saving a web request, so not inlining the chunk
  // makes for a smoother build process.
  const shouldInlineRuntimeChunk = process.env.INLINE_RUNTIME_CHUNK !== 'false';
  
  const imageInlineSizeLimit = parseInt(
      process.env.IMAGE_INLINE_SIZE_LIMIT || '10000',
  );
  
  // Check if TypeScript is setup
  const useTypeScript = fs.existsSync(paths.appTsConfig);
  
  // style files regexes
  const cssRegex = /\.css$/;
  const lessModuleRegex = /\.less$/;
  const lessRegex = /\.less$/;
  let lessModulePaths = require('globby').sync(`${paths.appSrc}/*`, { ignore: [path.resolve(paths.appSrc, 'library'), '**/**.*'], absolute: true });
  lessModulePaths = lessModulePaths.map(path.normalize);
  
  console.log(require.resolve('@babel/plugin-proposal-class-properties'))
  console.log(require.resolve('babel-plugin-named-asset-import'))
  
  // This is the production and development configuration.
  // It is focused on developer experience, fast rebuilds, and a minimal bundle.
  module.exports = function (webpackEnv) {
      const isEnvDevelopment = webpackEnv === 'development';
      const isEnvProduction = webpackEnv === 'production';
  
      // Variable used for enabling profiling in Production
      // passed into alias object. Uses a flag if passed into the build command
      const isEnvProductionProfile =
          isEnvProduction && process.argv.includes('--profile');
  
      // We will provide `paths.publicUrlOrPath` to our app
      // as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
      // Omit trailing slash as %PUBLIC_URL%/xyz looks better than %PUBLIC_URL%xyz.
      // Get environment variables to inject into our app.
      const env = getClientEnvironment(paths.publicUrlOrPath.slice(0, -1));
  
      // common function to get style loaders
      const getStyleLoaders = (cssOptions, preProcessor) => {
          const loaders = [
              isEnvDevelopment && require.resolve('style-loader'),
              isEnvProduction && {
                  loader: MiniCssExtractPlugin.loader,
                  // css is located in `static/css`, use '../../' to locate index.html folder
                  // in production `paths.publicUrlOrPath` can be a relative path
                  options: paths.publicUrlOrPath.startsWith('.')
                      ? { publicPath: '../../' }
                      : {},
              },
              {
                  loader: require.resolve('css-loader'),
                  options: cssOptions,
              },
              {
                  // Options for PostCSS as we reference these options twice
                  // Adds vendor prefixing based on your specified browser support in
                  // package.json
                  loader: require.resolve('postcss-loader'),
                  options: {
                      // Necessary for external CSS imports to work
                      // https://github.com/facebook/create-react-app/issues/2677
                      ident: 'postcss',
                      plugins: () => [
                          require('postcss-flexbugs-fixes'),
                          require('postcss-preset-env')({
                              autoprefixer: {
                                  flexbox: 'no-2009',
                              },
                              stage: 3,
                          }),
                          // Adds PostCSS Normalize as the reset css with default options,
                          // so that it honors browserslist config in package.json
                          // which in turn let's users customize the target behavior as per their needs.
                          postcssNormalize(),
                      ],
                      sourceMap: isEnvProduction && shouldUseSourceMap,
                  },
              },
          ].filter(Boolean);
          if (preProcessor) {
              const loaderName = typeof preProcessor === 'string' ? preProcessor : preProcessor.loader;
              const loaderOptions = typeof preProcessor === 'string' ? {} : preProcessor.options;
              loaders.push(
                  {
                      loader: require.resolve('resolve-url-loader'),
                      options: {
                          sourceMap: isEnvProduction && shouldUseSourceMap,
                      },
                  },
                  {
                      loader: require.resolve(loaderName),
                      options: {
                          ...loaderOptions,
                          sourceMap: true,
                      },
                  },
              );
          }
          return loaders;
      };
  
      return {
          mode: isEnvProduction ? 'production' : isEnvDevelopment && 'development',
          // Stop compilation early in production
          bail: isEnvProduction,
          devtool: isEnvProduction
              ? shouldUseSourceMap
                  ? 'source-map'
                  : false
              : isEnvDevelopment && 'cheap-module-source-map',
          // These are the "entry points" to our application.
          // This means they will be the "root" imports that are included in JS bundle.
          entry: [
              // Include an alternative client for WebpackDevServer. A client's job is to
              // connect to WebpackDevServer by a socket and get notified about changes.
              // When you save a file, the client will either apply hot updates (in case
              // of CSS changes), or refresh the page (in case of JS changes). When you
              // make a syntax error, this client will display a syntax error overlay.
              // Note: instead of the default WebpackDevServer client, we use a custom one
              // to bring better experience for Create React App users. You can replace
              // the line below with these two lines if you prefer the stock client:
              // require.resolve('webpack-dev-server/client') + '?/',
              // require.resolve('webpack/hot/dev-server'),
              isEnvDevelopment &&
              require.resolve('react-dev-utils/webpackHotDevClient'),
              // Finally, this is your app's code:
              paths.appIndexJs,
              // We include the app code last so that if there is a runtime error during
              // initialization, it doesn't blow up the WebpackDevServer client, and
              // changing JS code would still trigger a refresh.
          ].filter(Boolean),
          output: {
              // The build folder.
              path: isEnvProduction ? paths.appBuild : undefined,
              // Add /* filename */ comments to generated require()s in the output.
              pathinfo: isEnvDevelopment,
              // There will be one main bundle, and one file per asynchronous chunk.
              // In development, it does not produce real files.
              filename: isEnvProduction
                  ? 'static/js/[name].[contenthash:8].js'
                  : isEnvDevelopment && 'static/js/bundle.js',
              // remove this when upgrading to webpack 5
              futureEmitAssets: true,
              // There are also additional JS chunk files if you use code splitting.
              chunkFilename: isEnvProduction
                  ? 'static/js/[name].[contenthash:8].chunk.js'
                  : isEnvDevelopment && 'static/js/[name].chunk.js',
              // webpack uses `publicPath` to determine where the app is being served from.
              // It requires a trailing slash, or the file assets will get an incorrect path.
              // We inferred the "public path" (such as / or /my-project) from homepage.
              publicPath: paths.publicUrlOrPath,
              // Point sourcemap entries to original disk location (format as URL on Windows)
              devtoolModuleFilenameTemplate: isEnvProduction
                  ? info =>
                      path
                          .relative(paths.appSrc, info.absoluteResourcePath)
                          .replace(/\\/g, '/')
                  : isEnvDevelopment &&
                  (info => path.resolve(info.absoluteResourcePath).replace(/\\/g, '/')),
              // Prevents conflicts when multiple webpack runtimes (from different apps)
              // are used on the same page.
              jsonpFunction: `webpackJsonp${appPackageJson.name}`,
              // this defaults to 'window', but by setting it to 'this' then
              // module chunks which are built will work in web workers as well.
              globalObject: 'this',
          },
          optimization: {
              minimize: isEnvProduction,
              minimizer: [
                  // This is only used in production mode
                  new TerserPlugin({
                      terserOptions: {
                          parse: {
                              // We want terser to parse ecma 8 code. However, we don't want it
                              // to apply any minification steps that turns valid ecma 5 code
                              // into invalid ecma 5 code. This is why the 'compress' and 'output'
                              // sections only apply transformations that are ecma 5 safe
                              // https://github.com/facebook/create-react-app/pull/4234
                              ecma: 8,
                          },
                          compress: {
                              ecma: 5,
                              warnings: false,
                              // Disabled because of an issue with Uglify breaking seemingly valid code:
                              // https://github.com/facebook/create-react-app/issues/2376
                              // Pending further investigation:
                              // https://github.com/mishoo/UglifyJS2/issues/2011
                              comparisons: false,
                              // Disabled because of an issue with Terser breaking valid code:
                              // https://github.com/facebook/create-react-app/issues/5250
                              // Pending further investigation:
                              // https://github.com/terser-js/terser/issues/120
                              inline: 2,
                          },
                          mangle: {
                              safari10: true,
                          },
                          // Added for profiling in devtools
                          keep_classnames: isEnvProductionProfile,
                          keep_fnames: isEnvProductionProfile,
                          output: {
                              ecma: 5,
                              comments: false,
                              // Turned on because emoji and regex is not minified properly using default
                              // https://github.com/facebook/create-react-app/issues/2488
                              ascii_only: true,
                          },
                      },
                      sourceMap: shouldUseSourceMap,
                  }),
                  // This is only used in production mode
                  new OptimizeCSSAssetsPlugin({
                      cssProcessorOptions: {
                          parser: safePostCssParser,
                          map: shouldUseSourceMap
                              ? {
                                  // `inline: false` forces the sourcemap to be output into a
                                  // separate file
                                  inline: false,
                                  // `annotation: true` appends the sourceMappingURL to the end of
                                  // the css file, helping the browser find the sourcemap
                                  annotation: true,
                              }
                              : false,
                      },
                      cssProcessorPluginOptions: {
                          preset: ['default', { minifyFontValues: { removeQuotes: false } }],
                      },
                  }),
              ],
              // Automatically split vendor and commons
              // https://twitter.com/wSokra/status/969633336732905474
              // https://medium.com/webpack/webpack-4-code-splitting-chunk-graph-and-the-splitchunks-optimization-be739a861366
              splitChunks: {
                  chunks: 'all',
                  name: false,
              },
              // Keep the runtime chunk separated to enable long term caching
              // https://twitter.com/wSokra/status/969679223278505985
              // https://github.com/facebook/create-react-app/issues/5358
              runtimeChunk: {
                  name: entrypoint => `runtime-${entrypoint.name}`,
              },
          },
          resolve: {
              // This allows you to set a fallback for where webpack should look for modules.
              // We placed these paths second because we want `node_modules` to "win"
              // if there are any conflicts. This matches Node resolution mechanism.
              // https://github.com/facebook/create-react-app/issues/253
              modules: ['node_modules', paths.appNodeModules].concat(
                  modules.additionalModulePaths || [],
              ),
              // These are the reasonable defaults supported by the Node ecosystem.
              // We also include JSX as a common component filename extension to support
              // some tools, although we do not recommend using it, see:
              // https://github.com/facebook/create-react-app/issues/290
              // `web` extension prefixes have been added for better support
              // for React Native Web.
              extensions: paths.moduleFileExtensions
                  .map(ext => `.${ext}`)
                  .filter(ext => useTypeScript || !ext.includes('ts')),
              alias: {
                  // Support React Native Web
                  // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
                  'react-native': 'react-native-web',
                  // Allows for better profiling with ReactDevTools
                  ...(isEnvProductionProfile && {
                      'react-dom$': 'react-dom/profiling',
                      'scheduler/tracing': 'scheduler/tracing-profiling',
                  }),
                  ...(modules.webpackAliases || {}),
                  '@ant-design': '@ant-design',
                  '@': paths.appSrc,
                  'src': paths.appSrc,
              },
              plugins: [
                  // Adds support for installing with Plug'n'Play, leading to faster installs and adding
                  // guards against forgotten dependencies and such.
                  PnpWebpackPlugin,
                  // Prevents users from importing files from outside of src/ (or node_modules/).
                  // This often causes confusion because we only process files within src/ with babel.
                  // To fix this, we prevent you from importing files out of src/ -- if you'd like to,
                  // please link the files into your node_modules/ and let module-resolution kick in.
                  // Make sure your source files are compiled, as they will not be processed in any way.
                  new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
              ],
          },
          resolveLoader: {
              plugins: [
                  // Also related to Plug'n'Play, but this time it tells webpack to load its loaders
                  // from the current package.
                  PnpWebpackPlugin.moduleLoader(module),
              ],
          },
          module: {
              strictExportPresence: true,
              rules: [
                  {
                      test: /page-routes\.js$/,
                      enforce: 'pre',
                      use: path.resolve(__dirname, 'route-loader.js'),
                      include: paths.appSrc,
                  },
  
                  // Disable require.ensure as it's not a standard language feature.
                  { parser: { requireEnsure: false } },
  
                  // First, run the linter.
                  // It's important to do this before Babel processes the JS.
                  {
                      test: /\.(js|mjs|jsx|ts|tsx)$/,
                      enforce: 'pre',
                      use: [
                          {
                              options: {
                                  cache: true,
                                  formatter: require.resolve('react-dev-utils/eslintFormatter'),
                                  eslintPath: require.resolve('eslint'),
                                  resolvePluginsRelativeTo: __dirname,
                                  extends: ['react-app', 'react-app/jest'],
                                  plugins: ['@typescript-eslint'],
                                  parser: '@typescript-eslint/parser',
                              },
                              loader: require.resolve('eslint-loader'),
                          },
                      ],
                      include: paths.appSrc,
                  },
                  {
                      // "oneOf" will traverse all following loaders until one will
                      // match the requirements. When no loader matches it will fall
                      // back to the "file" loader at the end of the loader list.
                      oneOf: [
                          // "url" loader works like "file" loader except that it embeds assets
                          // smaller than specified limit in bytes as data URLs to avoid requests.
                          // A missing `test` is equivalent to a match.
                          {
                              test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
                              loader: require.resolve('url-loader'),
                              options: {
                                  limit: imageInlineSizeLimit,
                                  name: 'static/media/[name].[hash:8].[ext]',
                              },
                          },
                          // Process application JS with Babel.
                          // The preset includes JSX, Flow, TypeScript, and some ESnext features.
                          {
                              test: /\.(js|mjs|jsx|ts|tsx)$/,
                              include: paths.appSrc,
                              loader: require.resolve('babel-loader'),
                              options: {
                                  customize: require.resolve(
                                      'babel-preset-react-app/webpack-overrides',
                                  ),
                                  presets: [
                                      '@babel/preset-env',
                                      '@babel/preset-react',
                                      '@babel/preset-typescript'
                                  ],
                                  plugins: [
                                      [
                                          require.resolve('babel-plugin-named-asset-import'),
                                          {
                                              loaderMap: {
                                                  svg: {
                                                      ReactComponent:
                                                          '@svgr/webpack?-svgo,+titleProp,+ref![path]',
                                                  },
                                              },
                                          },
                                      ],
                                      [require.resolve('@babel/plugin-proposal-class-properties')]
                                  ],
                                  // This is a feature of `babel-loader` for webpack (not Babel itself).
                                  // It enables caching results in ./node_modules/.cache/babel-loader/
                                  // directory for faster rebuilds.
                                  cacheDirectory: true,
                                  // See #6846 for context on why cacheCompression is disabled
                                  cacheCompression: false,
                                  compact: isEnvProduction,
                              },
                          },
                          // Process any JS outside of the app with Babel.
                          // Unlike the application JS, we only compile the standard ES features.
                          {
                              test: /\.(js|mjs)$/,
                              exclude: /@babel(?:\/|\\{1,2})runtime/,
                              loader: require.resolve('babel-loader'),
                              options: {
                                  babelrc: false,
                                  configFile: false,
                                  compact: false,
                                  presets: [
                                      [
                                          require.resolve('babel-preset-react-app/dependencies'),
                                          { helpers: true },
                                      ],
                                  ],
                                  cacheDirectory: true,
                                  // See #6846 for context on why cacheCompression is disabled
                                  cacheCompression: false,
  
                                  // Babel sourcemaps are needed for debugging into node_modules
                                  // code.  Without the options below, debuggers like VSCode
                                  // show incorrect code and set breakpoints on the wrong lines.
                                  sourceMaps: shouldUseSourceMap,
                                  inputSourceMap: shouldUseSourceMap,
                              },
                          },
                          // "postcss" loader applies autoprefixer to our CSS.
                          // "css" loader resolves paths in CSS and adds assets as dependencies.
                          // "style" loader turns CSS into JS modules that inject <style> tags.
                          // In production, we use MiniCSSExtractPlugin to extract that CSS
                          // to a file, but in development "style" loader enables hot editing
                          // of CSS.
                          // By default we support CSS Modules with the extension .module.css
                          {
                              test: cssRegex,
                              // include: paths.appSrc,
                              use: getStyleLoaders({
                                  importLoaders: 1,
                                  sourceMap: isEnvProduction && shouldUseSourceMap,
                              }),
                              // Don't consider CSS imports dead code even if the
                              // containing package claims to have no side effects.
                              // Remove this when webpack adds a warning or an error for this.
                              // See https://github.com/webpack/webpack/issues/6571
                              sideEffects: true,
                          },
                          // Adds support for CSS Modules (https://github.com/css-modules/css-modules)
                          // using the extension .module.css
                          // {
                          //   test: cssModuleRegex,
                          //   use: getStyleLoaders({
                          //     importLoaders: 1,
                          //     sourceMap: isEnvProduction && shouldUseSourceMap,
                          //     modules: {
                          //       getLocalIdent: getCSSModuleLocalIdent,
                          //     },
                          //   }),
                          // },
                          // Opt-in support for SASS (using .scss or .sass extensions).
                          // By default we support SASS Modules with the
                          // extensions .module.scss or .module.sass
                          {
                              test: lessModuleRegex,
                              include: lessModulePaths,
                              use: getStyleLoaders({
                                  importLoaders: 2,
                                  sourceMap: isEnvProduction && shouldUseSourceMap,
                                  modules: {
                                      localIdentName: '[local]-[hash:base64:5]',
                                  },
                              },
                                  {
                                      loader: 'less-loader',
                                      options: {
                                          javascriptEnabled: true,
                                          // modifyVars: theme,
                                      },
                                  },
                              ),
                          },
                          // using LESS
                          // using the extension .less
                          {
                              test: lessRegex,
                              exclude: lessModulePaths,
                              // include: paths.appSrc,
                              // include: [paths.appSrc, /node_modules\/antd/],
                              use: getStyleLoaders(
                                  {
                                      importLoaders: 2,
                                      sourceMap: isEnvProduction && shouldUseSourceMap,
                                  },
                                  {
                                      loader: 'less-loader',
                                      options: {
                                          javascriptEnabled: true,
                                          // modifyVars: theme,
                                      },
                                  },
                              ),
                          },
                          // "file" loader makes sure those assets get served by WebpackDevServer.
                          // When you `import` an asset, you get its (virtual) filename.
                          // In production, they would get copied to the `build` folder.
                          // This loader doesn't use a "test" so it will catch all modules
                          // that fall through the other loaders.
                          {
                              loader: require.resolve('file-loader'),
                              // Exclude `js` files to keep "css" loader working as it injects
                              // its runtime that would otherwise be processed through "file" loader.
                              // Also exclude `html` and `json` extensions so they get processed
                              // by webpacks internal loaders.
                              exclude: [/\.(js|mjs|jsx|ts|tsx)$/, /\.html$/, /\.json$/],
                              options: {
                                  name: 'static/media/[name].[hash:8].[ext]',
                              },
                          },
                          // ** STOP ** Are you adding a new loader?
                          // Make sure to add the new loader(s) before the "file" loader.
                      ],
                  },
              ],
          },
          plugins: [
              process.env.ANALYZ ? new BundleAnalyzerPlugin() : undefined,
              new webpack.DllReferencePlugin({
                  manifest: require(path.join(__dirname, 'dll', 'vendor-manifest.json')),
              }),
              new webpack.DllReferencePlugin({
                  manifest: require(path.join(__dirname, 'dll', 'reactVendor-manifest.json')),
              }),
  
              // Generates an `index.html` file with the <script> injected.
              new HtmlWebpackPlugin(
                  Object.assign(
                      {},
                      {
                          inject: true,
                          template: paths.appHtml,
                      },
                      isEnvProduction
                          ? {
                              minify: {
                                  removeComments: true,
                                  collapseWhitespace: true,
                                  removeRedundantAttributes: true,
                                  useShortDoctype: true,
                                  removeEmptyAttributes: true,
                                  removeStyleLinkTypeAttributes: true,
                                  keepClosingSlash: true,
                                  minifyJS: true,
                                  minifyCSS: true,
                                  minifyURLs: true,
                              },
                          }
                          : undefined,
                  ),
              ),
              new AddAssetHtmlPlugin({
                  filepath: path.resolve(__dirname, './dll/*.dll.js'),
                  publicPath: paths.publicUrlOrPath + 'static/js',
                  outputPath: path.join('static', 'js'),
              }),
              // Inlines the webpack runtime script. This script is too small to warrant
              // a network request.
              // https://github.com/facebook/create-react-app/issues/5358
              isEnvProduction &&
              shouldInlineRuntimeChunk &&
              new InlineChunkHtmlPlugin(HtmlWebpackPlugin, [/runtime-.+[.]js/]),
              // Makes some environment variables available in index.html.
              // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
              // <link rel="icon" href="%PUBLIC_URL%/favicon.ico">
              // It will be an empty string unless you specify "homepage"
              // in `package.json`, in which case it will be the pathname of that URL.
              new InterpolateHtmlPlugin(HtmlWebpackPlugin, env.raw),
              // This gives some necessary context to module not found errors, such as
              // the requesting resource.
              new ModuleNotFoundPlugin(paths.appPath),
              // Makes some environment variables available to the JS code, for example:
              // if (process.env.NODE_ENV === 'production') { ... }. See `./env.js`.
              // It is absolutely essential that NODE_ENV is set to production
              // during a production build.
              // Otherwise React will be compiled in the very slow development mode.
              new webpack.DefinePlugin(env.stringified),
              // This is necessary to emit hot updates (currently CSS only):
              isEnvDevelopment && new webpack.HotModuleReplacementPlugin(),
              // Watcher doesn't work well if you mistype casing in a path so we use
              // a plugin that prints an error when you attempt to do this.
              // See https://github.com/facebook/create-react-app/issues/240
              isEnvDevelopment && new CaseSensitivePathsPlugin(),
              // If you require a missing module and then `npm install` it, you still have
              // to restart the development server for webpack to discover it. This plugin
              // makes the discovery automatic so you don't have to restart.
              // See https://github.com/facebook/create-react-app/issues/186
              isEnvDevelopment &&
              new WatchMissingNodeModulesPlugin(paths.appNodeModules),
              isEnvProduction &&
              new MiniCssExtractPlugin({
                  // Options similar to the same options in webpackOptions.output
                  // both options are optional
                  filename: 'static/css/[name].[contenthash:8].css',
                  chunkFilename: 'static/css/[name].[contenthash:8].chunk.css',
              }),
              // Generate an asset manifest file with the following content:
              // - "files" key: Mapping of all asset filenames to their corresponding
              //   output file so that tools can pick it up without having to parse
              //   `index.html`
              // - "entrypoints" key: Array of files which are included in `index.html`,
              //   can be used to reconstruct the HTML if necessary
              new ManifestPlugin({
                  fileName: 'asset-manifest.json',
                  publicPath: paths.publicUrlOrPath,
                  generate: (seed, files, entrypoints) => {
                      const manifestFiles = files.reduce((manifest, file) => {
                          manifest[file.name] = file.path;
                          return manifest;
                      }, seed);
                      const entrypointFiles = entrypoints.main.filter(
                          fileName => !fileName.endsWith('.map'),
                      );
  
                      return {
                          files: manifestFiles,
                          entrypoints: entrypointFiles,
                      };
                  },
              }),
              // Moment.js is an extremely popular library that bundles large locale files
              // by default due to how webpack interprets its code. This is a practical
              // solution that requires the user to opt into importing specific locales.
              // https://github.com/jmblog/how-to-optimize-momentjs-with-webpack
              // You can remove this if you don't use Moment.js:
              new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
              // Generate a service worker script that will precache, and keep up to date,
              // the HTML & assets that are part of the webpack build.
              isEnvProduction &&
              new WorkboxWebpackPlugin.GenerateSW({
                  clientsClaim: true,
                  exclude: [/\.map$/, /asset-manifest\.json$/],
                  importWorkboxFrom: 'cdn',
                  navigateFallback: paths.publicUrlOrPath + 'index.html',
                  navigateFallbackBlacklist: [
                      // Exclude URLs starting with /_, as they're likely an API call
                      new RegExp('^/_'),
                      // Exclude any URLs whose last part seems to be a file extension
                      // as they're likely a resource and not a SPA route.
                      // URLs containing a "?" character won't be blacklisted as they're likely
                      // a route with query params (e.g. auth callbacks).
                      new RegExp('/[^/?]+\\.[^/]+$'),
                  ],
              }),
              // TypeScript type checking
              useTypeScript &&
              new ForkTsCheckerWebpackPlugin({
                  typescript: resolve.sync('typescript', {
                      basedir: paths.appNodeModules,
                  }),
                  async: isEnvDevelopment,
                  useTypescriptIncrementalApi: true,
                  checkSyntacticErrors: true,
                  resolveModuleNameModule: process.versions.pnp
                      ? `${__dirname}/pnpTs.js`
                      : undefined,
                  resolveTypeReferenceDirectiveModule: process.versions.pnp
                      ? `${__dirname}/pnpTs.js`
                      : undefined,
                  tsconfig: paths.appTsConfig,
                  reportFiles: [
                      '**',
                      '!**/__tests__/**',
                      '!**/?(*.)(spec|test).*',
                      '!**/src/setupProxy.*',
                      '!**/src/setupTests.*',
                  ],
                  silent: true,
                  // The formatter is invoked directly in WebpackDevServerUtils during development
                  formatter: isEnvProduction ? typescriptFormatter : undefined,
              }),
          ].filter(Boolean),
          // Some libraries import Node modules but don't use them in the browser.
          // Tell webpack to provide empty mocks for them so importing them works.
          node: {
              module: 'empty',
              dgram: 'empty',
              dns: 'mock',
              fs: 'empty',
              http2: 'empty',
              net: 'empty',
              tls: 'empty',
              child_process: 'empty',
          },
          // Turn off performance processing because we utilize
          // our own hints via the FileSizeReporter
          performance: false,
      };
  };
  