title: Problem with angular pipe and directive code introspection
body: <p>I'm having an issue with my angular code that I can't solve.</p>
  <p>I'm using intelliJ as code editor. The project compile and run correctly. All the file <em>.ts</em> are ok but I'm having an issue with my <em>.html</em>. In a word any directive or pipe is highlighted as an error. For example, the message I receive from my editor is :</p>
  <p><em>Property ngClass is not provided by any applicable directives nor by div element</em></p>
  <p>or for the async pipe:</p>
  <p><em>Missing require() statement</em></p>
  <p>same story of *ngIf or *ngFor, but as I told you everything compile and run well. I guess is something related with the editor or angular configuration...</p>
  <p>Any ideas?</p>
  <p>Thank you in advance.</p>