 not require any other dependencies. If you use this appender, remember to call <code class="highlighter-rouge">log4js.shutdown</code> when your application terminates, so that all messages will have been sent to the server and the UDP socket can be closed. The appender supports passing custom fields to the server in both the config, and in individual log messages (see examples below).</p>

<h2 id="configuration">Configuration</h2>

<ul>
  <li><code class="highlighter-rouge">type</code> - <code class="highl