title: why doesnt print property file.lastModifiedDate of file?
body: <pre><code>&lt;tr *ngFor="let file of filesList; let i=index"&gt;
        &lt;td&gt;&lt;input class="form-control input-sm" value="{{ file.url }}"/&gt;&lt;/td&gt;
        &lt;td&gt;{{ file.size/1024 | round }} Kb&lt;/td&gt;
        &lt;td&gt;{{ file.lastModifiedDate }} &lt;/td&gt;
  &lt;/tr&gt;
  </code></pre>
  
  <p>I see file has this property in console log, how can I print it? <a href="https://i.stack.imgur.com/ecpOR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ecpOR.png" alt="enter image description here"></a></p>