Function hasReact

transforms/utils/ReactUtils.js:41–46

      .size() === 1;

  const hasReact = path => (
    hasModule(path, 'React') ||
    hasModule(path, 'react') ||
    hasModule(path, 'react/addons') ||
    hasModule(path, 'react-native')
  );

  // ---------------------------------------------------------------------------
  // Finds all variable declarations that call React.createClass