Switch for specific type in TypeScript : <p>I have an interface <code>Action</code>:</p>

<pre><code>interface Action {}
</code></pre>

<p>And an implementation of this <code>Action</code> <code>SpecificAction</code>:</p>

<pre><code>class SpecificAction implements Action {
   payload?: Any
}
</code></pre>

<p>Is it possible in TS to construct a switch operator, like this:</p>

<pre><code>let action: Action
switch (action) {
   case SpecificAction: //it works
       console.log(action.payload) // it doesn't 
}
</code></pre>

<p>Is it possible in that case to know, that action is already of <code>SpecificAction</code> type?</p>
