n</a>.t</span> <span>&#45;&gt;</span> <span><span><span class="type-var">'a</span> option</span> Lwt.t</span></code></dt><dt class="spec value" id="val-requestUpdateCheck"><a href="#val-requestUpdateCheck" class="anchor"></a><code><span class="keyword">val</span> requestUpdateCheck : unit <span>&#45;&gt;</span> <span><span><span><a href="../../Runtime_utils/class-type-requestCheckResponse/index.html">Runtime_utils.requestCheckResponse</a> <a href="../../../ezjs-min/Js_min/index.html">Js_min</a>.t</span> <a 