const fs = require("fs"); const path = require("path"); const webpack = require("webpack"); const resolve = require("resolve"); 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 CssMinimizerPlugin = require("css-minimizer-webpack-plugin"); const { WebpackManifestPlugin } = require("webpack-manifest-plugin"); const InterpolateHtmlPlugin = require("react-dev-utils/InterpolateHtmlPlugin"); const WorkboxWebpackPlugin = require("workbox-webpack-plugin"); const ModuleScopePlugin = require("react-dev-utils/ModuleScopePlugin"); const getCSSModuleLocalIdent = require("react-dev-utils/getCSSModuleLocalIdent"); const ESLintPlugin = require("eslint-webpack-plugin"); const paths = require("./paths"); const modules = require("./modules"); const getClientEnvironment = require("./env"); const ModuleNotFoundPlugin = require("react-dev-utils/ModuleNotFoundPlugin"); const ForkTsCheckerWebpackPlugin = process.env.TSC_COMPILE_ON_ERROR === "true" ? require("react-dev-utils/ForkTsCheckerWarningWebpackPlugin") : require("react-dev-utils/ForkTsCheckerWebpackPlugin"); const ReactRefreshWebpackPlugin = require("@pmmmwh/react-refresh-webpack-plugin"); const createEnvironmentHash = require("./webpack/persistentCache/createEnvironmentHash"); // Source maps are resource heavy and can cause out of memory issue for large source files. const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== "false"; const reactRefreshRuntimeEntry = require.resolve("react-refresh/runtime"); const reactRefreshWebpackPluginRuntimeEntry = require.resolve( "@pmmmwh/react-refresh-webpack-plugin" ); const babelRuntimeEntry = require.resolve("babel-preset-react-app"); const babelRuntimeEntryHelpers = require.resolve( "@babel/runtime/helpers/esm/assertThisInitialized", { paths: [babelRuntimeEntry] } ); const babelRuntimeRegenerator = require.resolve("@babel/runtime/regenerator", { paths: [babelRuntimeEntry], }); // 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 emitErrorsAsWarnings = process.env.ESLINT_NO_DEV_ERRORS === "true"; const disableESLintPlugin = process.env.DISABLE_ESLINT_PLUGIN === "true"; const imageInlineSizeLimit = parseInt( process.env.IMAGE_INLINE_SIZE_LIMIT || "10000" ); // Check if TypeScript is setup const useTypeScript = fs.existsSync(paths.appTsConfig); // Check if Tailwind config exists const useTailwind = fs.existsSync( path.join(paths.appPath, "tailwind.config.ts") ); // Get the path to the uncompiled service worker (if it exists). const swSrc = paths.swSrc; // style files regexes const cssRegex = /\.css$/; const cssModuleRegex = /\.module\.css$/; const sassRegex = /\.(scss|sass)$/; const sassModuleRegex = /\.module\.(scss|sass)$/; const hasJsxRuntime = (() => { if (process.env.DISABLE_NEW_JSX_TRANSFORM === "true") { return false; } try { require.resolve("react/jsx-runtime"); return true; } catch (e) { return false; } })(); // 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)); const shouldUseReactRefresh = env.raw.FAST_REFRESH; // 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: { postcssOptions: { // Necessary for external CSS imports to work // https://github.com/facebook/create-react-app/issues/2677 ident: "postcss", config: false, plugins: !useTailwind ? [ "postcss-flexbugs-fixes", [ "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. "postcss-normalize", ] : [ "tailwindcss", "postcss-flexbugs-fixes", [ "postcss-preset-env", { autoprefixer: { flexbox: "no-2009", }, stage: 3, }, ], ], }, sourceMap: isEnvProduction ? shouldUseSourceMap : isEnvDevelopment, }, }, ].filter(Boolean); if (preProcessor) { loaders.push( { loader: require.resolve("resolve-url-loader"), options: { sourceMap: isEnvProduction ? shouldUseSourceMap : isEnvDevelopment, root: paths.appSrc, }, }, { loader: require.resolve(preProcessor), options: { sourceMap: true, }, } ); } return loaders; }; return { target: ["browserslist"], // Webpack noise constrained to errors and warnings stats: "errors-warnings", 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: paths.appIndexJs, output: { // The build folder. path: paths.appBuild, // 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", // 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", assetModuleFilename: "static/media/[name].[hash][ext]", // 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, "/")), }, cache: { type: "filesystem", version: createEnvironmentHash(env.raw), cacheDirectory: paths.appWebpackCache, store: "pack", buildDependencies: { defaultWebpack: ["webpack/lib/"], config: [__filename], tsconfig: [paths.appTsConfig, paths.appJsConfig].filter((f) => fs.existsSync(f) ), }, }, infrastructureLogging: { level: "none", }, 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, }, }, }), // This is only used in production mode new CssMinimizerPlugin(), ], }, 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 fallback: { crypto: require.resolve("crypto-browserify"), stream: require.resolve("stream-browserify"), url: false, http: require.resolve("https-browserify"), https: require.resolve("https-browserify"), }, 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: [ // 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, reactRefreshRuntimeEntry, reactRefreshWebpackPluginRuntimeEntry, babelRuntimeEntry, babelRuntimeEntryHelpers, babelRuntimeRegenerator, ]), ], }, module: { strictExportPresence: true, rules: [ // Handle node_modules packages that contain sourcemaps shouldUseSourceMap && { enforce: "pre", exclude: /@babel(?:\/|\\{1,2})runtime/, test: /\.(js|mjs|jsx|ts|tsx|css)$/, loader: require.resolve("source-map-loader"), }, { // "oneOf" will traverse all following loaders until one will // match the requirements. When no loader matches it will fall // back to the "file" loader at the end of the loader list. oneOf: [ // TODO: Merge this config once `image/avif` is in the mime-db // https://github.com/jshttp/mime-db { test: [/\.avif$/], type: "asset", mimetype: "image/avif", parser: { dataUrlCondition: { maxSize: imageInlineSizeLimit, }, }, }, // "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$/, /\.png$/], type: "asset", parser: { dataUrlCondition: { maxSize: imageInlineSizeLimit, }, }, }, { test: /\.svg$/, use: [ { loader: require.resolve("@svgr/webpack"), options: { prettier: false, svgo: false, svgoConfig: { plugins: [{ removeViewBox: false }], }, titleProp: true, ref: true, }, }, { loader: require.resolve("file-loader"), options: { name: "static/media/[name].[hash].[ext]", }, }, ], issuer: { and: [/\.(ts|tsx|js|jsx|md|mdx)$/], }, }, // Process application JS with Babel. // The preset includes JSX, Flow, TypeScript, and some ESnext features. { test: /\.(js|mjs|jsx|ts|tsx)$/, include: paths.appSrc, loader: require.resolve("babel-loader"), options: { customize: require.resolve( "babel-preset-react-app/webpack-overrides" ), presets: [ [ require.resolve("babel-preset-react-app"), { runtime: hasJsxRuntime ? "automatic" : "classic", }, ], ], plugins: [ isEnvDevelopment && shouldUseReactRefresh && require.resolve("react-refresh/babel"), ].filter(Boolean), // This is a feature of `babel-loader` for webpack (not Babel itself). // It enables caching results in ./node_modules/.cache/babel-loader/ // directory for faster rebuilds. cacheDirectory: true, // See #6846 for context on why cacheCompression is disabled cacheCompression: false, compact: isEnvProduction, }, }, // Process any JS outside of the app with Babel. // Unlike the application JS, we only compile the standard ES features. { test: /\.(js|mjs)$/, 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