span>
  compileTimeout = <span class="literal">null</span>

  <span class="function"><span class="title">watchErr</span></span> = (e) -&gt;
    <span class="keyword">if</span> e.code <span class="keyword">is</span> <span class="string">'ENOENT'</span>
      <span class="keyword">return</span> <span class="keyword">if</span> sources.indexOf(source) <span class="keyword">is</span> -<span class="number">1</span>
      <span class="keyword">try</span>
        rewatch()
        compile()
      <span class="keywo