TypeScript for ... of with index / key? : <p>As described <a href="https://basarat.gitbooks.io/typescript/content/docs/for...of.html">here</a> TypeScript introduces a foreach loop:</p>

<pre><code>var someArray = [9, 2, 5];
for (var item of someArray) {
    console.log(item); // 9,2,5
}
</code></pre>

<p>But isn't there any index/key? I would expect something like:</p>

<pre><code>for (var item, key of someArray) { ... }
</code></pre>
