title: Webstorm says Promise is an unresolved type
body: <p>Using WebStorm 10.0</p>
  
  <p>I am currently learning Node Js  and installing all of the component it need to work .
  So i chose to used Jest to test my work, i already installed Jest to my frameworks and languages inside the WebStorm but its keeps showing <strong>Promise</strong> as <strong>unresolved type</strong> how do i fix it in WebStorm?</p>
  
  <p><a href="https://i.stack.imgur.com/QzNmU.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/QzNmU.jpg" alt="unresolved type"></a></p>
  
  <p><a href="https://i.stack.imgur.com/nicFK.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/nicFK.jpg" alt="enter image description here"></a></p>