title: Exception after import from new folder in Angular 2
body: <p>I have been trying to add new folder in app. Lets say I already have component A and B.
  I create new folder app/test. In the folder I create test-component.ts and I import it in component A. 
  I am now getting EXCEPTION: Unexpected directive value 'undefined' on the View of component</p>
  
  <p>In test-component.ts I use component B. </p>