How to prevent DOM replacement in angular2 ngFor async in angularfire2?
<p>I have an async list of messages in an angular2 app using angularfire2.</p>

<pre><code>&lt;message *ngFor="let message of messages | async" [message]="message"&gt;&lt;/message&gt;
</code></pre>

<p>When the list updates all elements in the ngFor seem to re-render. Is it possible to just re-render the new items in the list?</p>