pan>
          <span class="nx">assert</span><span class="p">.</span><span class="nx">nonEmptyFile</span> <span class="nx">fn</span>

      <span class="s1">&#39;index.html&#39;</span><span class="o">:</span>
        <span class="nv">topic: </span><span class="o">-&gt;</span>
          <span class="nx">fn</span> <span class="o">=</span> <span class="nx">path</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="err">@</span><span class="nx">output</span><span class="