le</code></li>
<li><code>with</code></li>
</ul>
<p>The second set is "future reserved words", which are not currently used by the
language but are expected to be used in the future. They are reserved now so
that future code is backwards compatible. Here's the full list (<a href="http://es5.github.com/#x7.6.1.2">ES5
§7.6.1.2</a>):</p>
<ul>
<li><code>class</code></li>
<li><code>const</code></li>
<li><code>enum</code></li>
<li><code>export</code></li>
<li><code>extends</code></li>
<li><code>import</code></li>