'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 `${inputPath}/`; } else { return inputPath; } } const getPublicUrl = appPackageJson => envPublicUrl || require(appPackageJson).homepage; // We use `PUBLIC_URL` environment variable or "homepage" field to infer // "public path" at which the app is served. // Webpack needs to know it to put the right <script> hrefs into HTML even in // single-page apps that may serve index.html for nested URLs like /todos/42. // We can't use a relative path in HTML because we don't want to load something // like /todos/42/static/js/bundle.7289d.js. We have to know the root. function getServedPath(appPackageJson) { const publicUrl = getPublicUrl(appPackageJson); const servedUrl = envPublicUrl || (publicUrl ? url.parse(publicUrl).pathname : '/'); return ensureSlash(servedUrl, true); } const moduleFileExtensions = [ 'web.mjs', 'mjs', 'web.js', 'js', 'web.ts', 'ts', 'web.tsx', 'tsx', 'json', 'web.jsx', 'jsx', ]; // Resolve file paths in the same order as webpack const resolveModule = (resolveFn, filePath) => { const extension = moduleFileExtensions.find(extension => fs.existsSync(resolveFn(`${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;