"constructor">UserError</span></span></code></td></tr></table></div><div class="spec-doc"><p>kind of error for <code>die</code>, with similar semantics as <code>Logging.{external,internal,user}_error</code></p></div></div><div class="odoc-spec"><div class="spec value" id="val-exit" class="anchored"><a href="#val-exit" class="anchor"></a><code><span><span class="keyword">val</span> exit : <span>int <span class="arrow">&#45;&gt;</span></span> <span class="type-var">'a</span></span></code></div></div><div clas