<span class="hljs-keyword">const</span> set = <span class="hljs-keyword">new</span> <span class="hljs-built_in">Set</span>([<span class="hljs-number">1</span>, <span class="hljs-number">2</span>]);
<span class="hljs-keyword">for</span> (<span class="hljs-keyword">const</span> e <span class="hljs-keyword">of</span> set)

<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">A</span> </span>{
    <span class="hljs-keyword">set</span> <span class="hljs-title">value</span>(<span class="hljs-params">x</span>) {
    }
    <span class="hljs-keyword">get</span> <span class="hljs-title">valid</span>() {
    }
}
