">false</span><span class="p">,</span>
    <span class="p">}</span>
  <span class="p">}</span>

  <span class="kd">const</span> <span class="nx">currentCopy</span><span class="p">:</span> <span class="nx">State</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nf">clone</span><span class="p">(</span><span class="nx">current</span><span class="p">)</span>
  <span class="k">switch </span><span class="p">(</span><span class="nx">action</span><span class="p">.</span><