WebStorm: Why does using new Date result in this warning
<p><strong>Background</strong></p>
<p>I am doing unit testing using <a href="https://mochajs.org" rel="nofollow noreferrer">Mocha</a> and the following line:</p>
<pre><code>describe ('', function() {

    it ('', function () {

        var myDate = new Date ('1 january, 2016 07:31:00');
    };
};
</code></pre>
<p>results in this warning in WebStorm:</p>
<blockquote>
<p>Interface can not be instantiated.</p>
<p>Checks code for warnings implied by Google Closure Compiler annotations. This includes correct usage of @abstract, @inteface and @implements tags.</p>
</blockquote>
<p>I am not using any JSdoc tags in my code.</p>
<p><strong>Questions:</strong></p>
<ol>
<li><p>Why do I get this warning?</p>
</li>
<li><p>Can I do something differently besides suppressing the warning to make it disappear?</p>
</li>
</ol>