我正在使用CRA 2.1.3，并使用git子模块与其他应用程序（例如我们的移动应用程序）共享具有常见功能的存储库。 在现有的代码库上工作，因此我没办法改变事情的完成方式。
我试图从子模块导入文件，但是CRA不允许在src之外导入文件，因此我不得不退出应用程序，现在我不知道如何从子模块导入文件并使它们通过babel进行编译。
我得到的错误：
Module parse failed: The keyword 'enum' is reserved (3:0)
You may need an appropriate loader to handle this file typ
资料夹结构：
我正在尝试使用相对路径（例如'../../submodule/etc/etc）包含文件。
Webpack配置文件（必须删除一些注释和导入以达到字数限制）
'use strict'; //const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin'); const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== 'false'; const shouldInlineRuntimeChunk = process.env.INLINE_RUNTIME_CHUNK !== 'false'; const useTypeScript = fs.existsSync(paths.appTsConfig); // style files regexes const cssRegex = /\\.css$/; const cssModuleRegex = /\\.module\\.css$/; const sassRegex = /\\.(scss|sass)$/; const sassModuleRegex = /\\.module\\.(scss|sass)$/; module.exports = function(webpackEnv) { const isEnvDevelopment = webpackEnv === 'development'; const isEnvProduction = webpackEnv === 'production'; const publicPath = isEnvProduction ? paths.servedPath : isEnvDevelopment && '/'; const shouldUseRelativeAssetPaths = publicPath === './'; 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: Object.assign( {}, shouldUseRelativeAssetPaths ? { publicPath: '../../' } : undefined ), }, { loader: require.resolve('css-loader'), options: cssOptions, }, { 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, }), ], sourceMap: isEnvProduction && shouldUseSourceMap, }, }, ].filter(Boolean); if (preProcessor) { loaders.push({ loader: require.resolve(preProcessor), options: { sourceMap: isEnvProduction && shouldUseSourceMap, }, }); } 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: [ 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].[chunkhash:8].js' : isEnvDevelopment && 'static/js/bundle.js', // There are also additional JS chunk files if you use code splitting. chunkFilename: isEnvProduction ? 'static/js/[name].[chunkhash: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, '/')), }, optimization: { minimize: isEnvProduction, minimizer: [ // This is only used in production mode new TerserPlugin({ terserOptions: { parse: { ecma: 8, }, compress: { ecma: 5, warnings: false, comparisons: false, inline: 2, }, mangle: { safari10: true, }, 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 parallel: true, // 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, }, // Keep the runtime chunk separated to enable long term caching // https://twitter.com/wSokra/status/969679223278505985 runtimeChunk: true, }, resolve: { modules: ['node_modules'].concat( // It is guaranteed to exist because we tweak it in `env.js` process.env.NODE_PATH.split(path.delimiter).filter(Boolean), ), extensions: paths.moduleFileExtensions .map(ext => `.${ext}`) .filter(ext => useTypeScript || !ext.includes('ts')), alias: { // Support React Native Web // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/ 'react-native': 'react-native-web', '@': path.join(__dirname, '../src') }, plugins: [ // Adds support for installing with Plug'n'Play, leading to faster installs and adding // guards against forgotten dependencies and such. PnpWebpackPlugin, // Prevents users from importing files from outside of src/ (or node_modules/). // This often causes confusion because we only process files within src/ with babel. // To fix this, we prevent you from importing files out of src/ -- if you'd like to, // please link the files into your node_modules/ and let module-resolution kick in. // Make sure your source files are compiled, as they will not be processed in any way. //new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]), ], }, resolveLoader: { plugins: [ // Also related to Plug'n'Play, but this time it tells Webpack to load its loaders // from the current package. PnpWebpackPlugin.moduleLoader(module), ], }, module: { strictExportPresence: true, rules: [ // Disable require.ensure as it's not a standard language feature. { parser: { requireEnsure: false } }, // First, run the linter. // It's important to do this before Babel processes the JS. { test: /\\.(js|mjs|jsx)$/, enforce: 'pre', use: [ { options: { formatter: require.resolve('react-dev-utils/eslintFormatter'), eslintPath: require.resolve('eslint'), }, 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: 10000, 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)$/, include: paths.appSrc, loader: require.resolve('babel-loader'), options: { customize: require.resolve( 'babel-preset-react-app/webpack-overrides' ), plugins: [ [ require.resolve('babel-plugin-named-asset-import'), { loaderMap: { svg: { ReactComponent: '@svgr/webpack?-prettier,-svgo![path]', }, }, }, ], ], // This is a feature of `babel-loader` for webpack (not Babel itself). // It enables caching results in ./node_modules/.cache/babel-loader/ // directory for faster rebuilds. cacheDirectory: true, cacheCompression: isEnvProduction, compact: isEnvProduction, }, }, // Process any JS outside of the app with Babel. // Unlike the application JS, we only compile the standard ES features. { test: /\\.(js|mjs)$/, 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, cacheCompression: isEnvProduction, // 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: [ // 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 ) ), // Inlines the webpack runtime script. This script is too small to warrant // a network request. 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, eg: // <link rel="shortcut 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 a manifest file which contains a mapping of all asset filenames // to their corresponding output file so that tools can pick it up without // having to parse `index.html`. new ManifestPlugin({ fileName: 'asset-manifest.json', publicPath: publicPath, }), // 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$/], importWorkboxFrom: 'cdn', navigateFallback: publicUrl + '/index.html', navigateFallbackBlacklist: [ // Exclude URLs starting with /_, as they're likely an API call new RegExp('^/_'), // Exclude URLs containing a dot, as they're likely a resource in // public/ and not a SPA route new RegExp('/[^/]+\\\\.[^/]+$'), ], }), // TypeScript type checking useTypeScript && new ForkTsCheckerWebpackPlugin({ typescript: resolve.sync('typescript', { basedir: paths.appNodeModules, }), async: false, checkSyntacticErrors: true, tsconfig: paths.appTsConfig, compilerOptions: { module: 'esnext', moduleResolution: 'node', resolveJsonModule: true, isolatedModules: true, noEmit: true, jsx: 'preserve', }, reportFiles: [ '**', '!**/*.json', '!**/__tests__/**', '!**/?(*.)(spec|test).*', '!**/src/setupProxy.*', '!**/src/setupTests.*', ], watch: paths.appSrc, silent: true, formatter: typescriptFormatter, }), ].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: { dgram: 'empty', fs: 'empty', net: 'empty', tls: 'empty', child_process: 'empty', }, // Turn off performance processing because we utilize // our own hints via the FileSizeReporter performance: false, }; };
paths.js
'use strict'; const path = require('path'); const fs = require('fs'); const url = require('url'); // Make sure any symlinks in the project folder are resolved: // https://github.com/facebook/create-react-app/issues/637 const appDirectory = fs.realpathSync(process.cwd()); const resolveApp = relativePath => path.resolve(appDirectory, relativePath); const envPublicUrl = process.env.PUBLIC_URL; function ensureSlash(inputPath, needsSlash) { const hasSlash = inputPath.endsWith('/'); if (hasSlash && !needsSlash) { return inputPath.substr(0, inputPath.length - 1); } else if (!hasSlash && needsSlash) { return `${inputPath}/`; } else { return inputPath; } } const getPublicUrl = appPackageJson => envPublicUrl || require(appPackageJson).homepage; // We use `PUBLIC_URL` environment variable or "homepage" field to infer // "public path" at which the app is served. // Webpack needs to know it to put the right <script> hrefs into HTML even in // single-page apps that may serve index.html for nested URLs like /todos/42. // We can't use a refresolative path in HTML because we don't want to load something // like /todos/42/static/js/bundle.7289d.js. We have to know the root. function getServedPath(appPackageJson) { const publicUrl = getPublicUrl(appPackageJson); const servedUrl = envPublicUrl || (publicUrl ? url.parse(publicUrl).pathname : '/'); return ensureSlash(servedUrl, true); } const moduleFileExtensions = [ 'web.mjs', 'mjs', 'web.js', 'js', 'web.ts', 'ts', 'web.tsx', 'tsx', 'json', 'web.jsx', 'jsx', ]; // Resolve file paths in the same order as webpack const resolveModule = (resolveFn, filePath) => { const extension = moduleFileExtensions.find(extension => fs.existsSync(resolveFn(`${filePath}.${extension}`)) ); if (extension) { return resolveFn(`${filePath}.${extension}`); } return resolveFn(`${filePath}.js`); }; // config after eject: we're in ./config/ module.exports = { dotenv: resolveApp('.env'), appPath: resolveApp('.'), appBuild: resolveApp('build'), appPublic: resolveApp('public'), appHtml: resolveApp('public/index.html'), appIndexJs: resolveModule(resolveApp, 'src/index'), appPackageJson: resolveApp('package.json'), appSrc: resolveApp('src'), appTsConfig: resolveApp('tsconfig.json'), yarnLockFile: resolveApp('yarn.lock'), testsSetup: resolveModule(resolveApp, 'src/setupTests'), proxySetup: resolveApp('src/setupProxy.js'), appNodeModules: resolveApp('node_modules'), publicUrl: getPublicUrl(resolveApp('package.json')), servedPath: getServedPath(resolveApp('package.json')), }; module.exports.moduleFileExtensions = moduleFileExtensions;