,</span>
<span class="w">  </span><span class="nx">onComment</span><span class="o">:</span><span class="w"> </span><span class="p">[]</span>
<span class="p">}</span>
<span class="kd">const</span><span class="w"> </span><span class="nx">ast</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">acorn</span><span class="p">.</span><span class="nx">parse</span><span class="p">(</span><span class="nx">program</span><span class="p">,</span><span class="w"> </span><span cla