ouge">string</code> (defaults to <code class="highlighter-rouge">OS.hostname()</code>) - the hostname used to identify the origin of the log messages.</li>
  <li><code class="highlighter-rouge">facility</code> - <code class="highlighter-rouge">string</code> (optional)</li>
  <li><code class="highlighter-rouge">customFields</code> - <code class="highlighter-rouge">object</code> (optional) - fields to be added to each log message; custom fields must start with an underscore.</li>
</ul>

<h2 id="example-defaul