'use strict'; 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.js') ); // 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'], 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 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