Typescript instanceof - Cannot find name
<p>I have a problem with Typescript compilation. This code returns the error:</p>

<blockquote>
  <p>error TS2304: Cannot find name 'NavigationEnd'.</p>
</blockquote>

<p>How can I make the compiler know about NavigationEnd type? NavigationEnd is angular2 router event type.</p>

<pre><code>this.router.events.subscribe((e) =&gt; {e instanceof NavigationEnd ? 
console.log('NavigationEnd'):console.log('Not NavigationEnd')});
</code></pre>

<p>I`m using IDE PHPStorm.</p>