title: PhpStorm for React gives me a red underline
body: <p>I'm using PhpStorm 2018.1, and coding a ReactJS based project. I was a little annoyed with the red underline which seemed to say that my code was error even though it wasn't.</p>
  
  <p><a href="https://i.stack.imgur.com/TDj4P.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TDj4P.png" alt="Problem no.1"></a>
  <a href="https://i.stack.imgur.com/mv7JU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mv7JU.png" alt="Problem no.2"></a></p>
  
  <p>I have followed the answers given from this forum: </p>
  
  <ol>
  <li><a href="https://stackoverflow.com/questions/36126292/webstorm-phpstorm-warning-for-react-attributes-in-jsx-like-classname">WebStorm/PhpStorm warning for react attributes in jsx like className</a></li>
  <li><a href="https://stackoverflow.com/questions/30309690/phpstorm-jsx-react-syntax-highlighting">PHPStorm JSX/React syntax highlighting</a></li>
  </ol>
  
  <p>but this red underline still appears.</p>
  
  <p>I installed a few plugins for JavaScript and ES6 debugging
  <a href="https://i.stack.imgur.com/kMX4l.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kMX4l.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/d3GBf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/d3GBf.png" alt="enter image description here"></a></p>
  
  <p>The question is is there another PhpStorm plugin that I didn't install?</p>