">for</span><span class="w"> </span><span class="p">(</span><span class="kd">const</span><span class="w"> </span><span class="nx">child</span><span class="w"> </span><span class="k">of</span><span class="w"> </span><span class="nx">node</span><span class="p">[</span><span class="nx">key</span><span class="p">])</span><span class="w"> </span><span class="p">{</span>
<span class="w">          </span><span class="k">yield</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class