'use strict';

const fs = require("fs");
const isWsl = require("is-wsl");
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 getCSSModuleLocalIdent = require("react-dev-utils/getCSSModuleLocalIdent");
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 eslint = require("eslint");
const CopyPlugin = require("copy-webpack-plugin");
const MonacoWebpackPlugin = require("monaco-editor-webpack-plugin");

const postcssNormalize = require("postcss-normalize");

const appPackageJson = require(paths.appPackageJson);
//const FileListPlugin = require("@abslant/cd-js-injector/src");

// 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$/;
const cssModuleRegex = /\.module\.css$/;
const sassRegex = /\.(scss|sass)$/;
const sassModuleRegex = /\.module\.(scss|sass)$/;
//const mainJSRegex = /main\.(.+)\.chunk\.js$/;
//const mainJSRegex = /main\.chunk\.js$/;

// 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');

    // 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.
    // In development, we always serve from the root. This makes config easier.
    const publicPath = isEnvProduction
      ? paths.servedPath
      : isEnvDevelopment && '/';
    // Some apps do not use client-side routing with pushState.
    // For these, "homepage" can be set to "." to enable relative asset paths.
    const shouldUseRelativeAssetPaths = publicPath === './';

    // `publicUrl` is just like `publicPath`, but we will provide it 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.
    const publicUrl = isEnvProduction
        ? publicPath.slice(0, -1)
        : isEnvDevelopment && '';
    // Get environment variables to inject into our app.
    const env = getClientEnvironment(publicUrl);

    // common function to get style loaders
    const getStyleLoaders = (cssOptions, preProcessor) => {
        const loaders = [
            isEnvDevelopment && require.resolve("style-loader"),
            isEnvProduction && {
                loader: MiniCssExtractPlugin.loader,
                options: shouldUseRelativeAssetPaths
                    ? { 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) {
            loaders.push(
                {
                    loader: require.resolve("resolve-url-loader"),
                    options: {
                        sourceMap: isEnvProduction && shouldUseSourceMap,
                    },
                },
                {
                    loader: require.resolve(preProcessor),
                    options: {
                        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",
            // TODO: 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",
            // We inferred the "public path" (such as / or /my-project) from homepage.
            // We use "/" in development.
            publicPath: publicPath,
            // 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,
                        },
                    },
                    // Use multi-process parallel running to improve the build speed
                    // Default number of concurrent runs: os.cpus().length - 1
                    // Disabled on WSL (Windows Subsystem for Linux) due to an issue with Terser
                    // https://github.com/webpack-contrib/terser-webpack-plugin/issues/21
                    parallel: !isWsl,
                    // Enable file caching
                    cache: 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,
                    },
                }),
            ],
            // 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,
                cacheGroups: {
                    monacoCommon: {
                        test: /[\\/]node_modules[\\/]monaco\-editor/,
                        name: "monaco-editor-common",
                        chunks: "async",
                    },
                    pdfCommon: {
                        test: /[\\/]node_modules[\\/](react\-pdf|pdfjs\-dist)/,
                        name: "react-pdf",
                        chunks: "async",
                    },
                },
            },
            // 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 || {}),
            },
            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: [
                // 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)$/,
                    enforce: "pre",
                    use: [
                        {
                            options: {
                                cache: true,
                                formatter: require.resolve(
                                    "react-dev-utils/eslintFormatter"
                                ),
                                eslintPath: require.resolve("eslint"),
                                resolvePluginsRelativeTo: __dirname,
                            },
                            loader: require.resolve("eslint-loader"),
                        },
                    ],
                    include: paths.appSrc,
                },
                {
                    // "oneOf" will traverse all following loaders until one will
                    // match the requirements. When no loader matches it will fall
                    // back to the "file" loader at the end of the loader list.
                    oneOf: [
                        // "url" loader works like "file" loader except that it embeds assets
                        // smaller than specified limit in bytes as data URLs to avoid requests.
                        // A missing `test` is equivalent to a match.
                        {
                            test: [/\.bmp$/, /\.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"
                                ),

                                plugins: [
                                    [
                                        require.resolve(
                                            "babel-plugin-named-asset-import"
                                        ),
                                        {
                                            loaderMap: {
                                                svg: {
                                                    ReactComponent:
                                                        "@svgr/webpack?-svgo,+titleProp,+ref![path]",
                                                },
                                            },
                                        },
                                    ],
                                ],
                                // 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,

                                // If an error happens in a package, it's possible to be
                                // because it was compiled. Thus, we don't want the browser
                                // debugger to show the original code. Instead, the code
                                // being evaluated would be much more helpful.
                                sourceMaps: false,
                            },
                        },
                        // "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,
                            exclude: cssModuleRegex,
                            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: true,
                                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: sassRegex,
                            exclude: sassModuleRegex,
                            use: getStyleLoaders(
                                {
                                    importLoaders: 2,
                                    sourceMap:
                                        isEnvProduction && shouldUseSourceMap,
                                },
                                "sass-loader"
                            ),
                            // 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, but using SASS
                        // using the extension .module.scss or .module.sass
                        {
                            test: sassModuleRegex,
                            use: getStyleLoaders(
                                {
                                    importLoaders: 2,
                                    sourceMap:
                                        isEnvProduction && shouldUseSourceMap,
                                    modules: true,
                                    getLocalIdent: getCSSModuleLocalIdent,
                                },
                                "sass-loader"
                            ),
                        },
                        // "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: [
            // Monaco 代码编辑器
            new MonacoWebpackPlugin({
                // available options are documented at https://github.com/Microsoft/monaco-editor-webpack-plugin#options
                languages: [
                    "json",
                    "php",
                    "bat",
                    "cpp",
                    "python",
                    "csharp",
                    "css",
                    "dockerfile",
                    "go",
                    "html",
                    "ini",
                    "java",
                    "javascript",
                    "less",
                    "lua",
                    "shell",
                    "sql",
                    "xml",
                    "yaml",
                ],
            }),

            // 写入版本文件
            new CopyPlugin([
                {
                    from: "package.json",
                    to: "version.json",
                    transform(content, path) {
                        let contentJson = JSON.parse(content);
                        return JSON.stringify({
                            version: contentJson.version,
                            name: contentJson.name,
                        });
                    },
                },
            ]),

            // 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 FileListPlugin(),
            // 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">
            // In production, it will be an empty string unless you specify "homepage"
            // in `package.json`, in which case it will be the pathname of that URL.
            // In development, this will be an empty string.
            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: publicPath,
                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$/, /moment$/),

            new webpack.DefinePlugin({
                ASSETS_VERSION: JSON.stringify(
                    require("../package.json").version
                ),
            }),
            // 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$/,
                        /asset-manifest\.json$/,
                        /\.ttf$/,
                        /version\.json$/,
                        /\.worker\.js$/,
                    ],
                    importWorkboxFrom: "cdn",
                    excludeChunks: ["monaco-editor-common", "pdf", "react-pdf"],
                    navigateFallback: publicUrl + "/index.html",
                    navigateFallbackBlacklist: [
                        // Exclude URLs starting with /_, as they're likely an API call
                        new RegExp("^/_"),
                        // Exclude any URLs whose last part seems to be a file extension
                        // as they're likely a resource and not a SPA route.
                        // URLs containing a "?" character won't be blacklisted as they're likely
                        // a route with query params (e.g. auth callbacks).
                        new RegExp("/[^/?]+\\.[^/]+$"),
                        new RegExp(/^\/api/),
                        new RegExp(/^\/f\//),
                        new RegExp(/^\/custom/),
                    ],
                }),
            // 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,
    };
};