How tell in vue js that a component is not a custom one (<menuitem>)
<p>I use <code>vue.js</code> and it recognize a component (<code>menuitem</code>) as a custom one.</p>

<pre><code> &lt;menu type="context" id="viewerContextMenu"&gt;
    &lt;menuitem id="firstId"&gt;&lt;/menuitem&gt;
    &lt;menuitem id="secondId"&gt;&lt;/menuitem&gt;
    &lt;menuitem id="thidId"&gt;&lt;/menuitem&gt;
&lt;/menu&gt;
</code></pre>

<p>So, I have the warning in my browser console:</p>

<pre><code>"Unknown custom element: &lt;menuitem&gt; - did you register the component correctly? For recursive components, make sure to provide the "name" option."
</code></pre>

<p>The thing is, <code>menuitem</code> is not a custom component. See: <a href="http://www.w3schools.com/tags/tag_menuitem.asp" rel="nofollow">http://www.w3schools.com/tags/tag_menuitem.asp</a></p>

<p>How can I tell <code>vue.js</code> that:</p>

<ul>
<li>either menuitem is not a custom component</li>
<li>or don't check this part of code.</li>
</ul>

<p>Thanks a lot.</p>