text: const { transformSync } = require('@babel/core');
  const path = require('path');
  const babelPluginWcHmr = require('../../src/babel/babelPluginWcHmr');
  
  const banner = `import * as __$wc_hmr$__ from '/__web-dev-server__/wc-hmr/runtime.js';
  
  if (import.meta.hot) {
    import.meta.hot.accept();
  }
  `;
  
  const rootDir = path.join(process.cwd(), 'virtual-project');
  
  /**
   * @param {string} code
   * @returns {string}
   */
  function transform(code, extraOptions) {
    return transformSync(code, {
      babelrc: false,
      configFile: false,
      filename: path.join(rootDir, 'src', 'foo.js'),
      plugins: [[babelPluginWcHmr, { rootDir, ...extraOptions }]],
    }).code;
  }
  
  module.exports = { banner, transform, rootDir };
  