text: 'use strict';
  
  const path = require('path');
  const fs = require('fs');
  const url = require('url');
  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);
  
  const envPublicUrl = process.env.PUBLIC_URL;
  
  const publicUrlOrPath = getPublicUrlOrPath(
    process.env.NODE_ENV === 'development',
    require(resolveApp('package.json')).homepage,
    process.env.PUBLIC_URL,
  );
  
  function ensureSlash(inputPath, needsSlash) {
    const hasSlash = inputPath.endsWith('/');
    if (hasSlash && !needsSlash) {
      return inputPath.slice(0, -1);
    }
  
    if (!hasSlash && needsSlash) {
      return `${inputPath}/`;
    }
  
    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'),
    popupHtml: resolveApp('public/popup.html'),
    appIndexJs: resolveModule(resolveApp, 'src/index'),
    popupIndexJs: resolveModule(resolveApp, 'src/popup.index'),
    appPackageJson: resolveApp('package.json'),
    appSrc: resolveApp('src'),
    appTsConfig: resolveApp('tsconfig.json'),
    appJsConfig: resolveApp('jsconfig.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')),
    publicUrlOrPath,
  };
  
  module.exports.moduleFileExtensions = moduleFileExtensions;
  