Function componentStack

packages/react-dom/src/__tests__/ReactDOMFizzServer-test.js:185–189

(components)

  }

  function componentStack(components) {
    return components
      .map(component => `\n    in ${component} (at **)`)
      .join('');
  }

  const bodyStartMatch = /<body(?:>| .*?>)/;
  const headStartMatch = /<head(?:>| .*?>)/;