text: 'use strict';
  
  const path = require('path');
  const fs = require('fs');
  const getPublicUrlOrPath = require('react-dev-utils/getPublicUrlOrPath');
  
  // 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);
  
  // 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.
  const publicUrlOrPath = getPublicUrlOrPath(
    process.env.NODE_ENV === 'development',
    require(resolveApp('package.json')).homepage,
    process.env.PUBLIC_URL
  );
  
  const buildPath = process.env.BUILD_PATH || 'build';
  
  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(buildPath),
    appPublic: resolveApp('public'),
    appHtml: resolveApp('public/index.html'),
    appIndexJs: resolveModule(resolveApp, 'src/ui/index'),
    appPackageJson: resolveApp('package.json'),
    appSrc: resolveApp('src/ui'),
    appTsConfig: resolveApp('tsconfig.json'),
    appJsConfig: resolveApp('jsconfig.json'),
    yarnLockFile: resolveApp('yarn.lock'),
    testsSetup: resolveModule(resolveApp, 'src/ui/setupTests'),
    proxySetup: resolveApp('src/ui/setupProxy.js'),
    appNodeModules: resolveApp('node_modules'),
    swSrc: resolveModule(resolveApp, 'src/service-worker'),
    publicUrlOrPath,
  };
  
  
  
  module.exports.moduleFileExtensions = moduleFileExtensions;
  