utils: module loader register

packages/ui-default/pages/problem_main.page.js

@@ -249,11 +249,7 @@ const page = new NamedPage(['problem_main'], () => {
     updateSelection();
   });
   $('#searchForm').on('submit', updateSelection);
-  let update;
-  $('#searchForm').find('input').on('input', () => {
-    if (update) clearTimeout(update);
-    update = setTimeout(updateSelection, 500);
-  });
+  $('#searchForm').find('input').on('input', _.debounce(updateSelection, 500));
   $(document).on('click', 'a.pager__item', (ev) => {
     ev.preventDefault();
     pjax.request(ev.currentTarget.getAttribute('href')).then(() => window.scrollTo(0, 0));

packages/ui-default/pages/record_main.page.ts

@@ -14,11 +14,7 @@ const page = new NamedPage('record_main', async () => {
   const sock = new WebSocket(UiContext.socketUrl);
   const dd = new DiffDOM();
 
-  let firstLoad = true;
-  sock.onopen = () => {
-    if (firstLoad) sock.send(JSON.stringify({ rids: UiContext.rids }));
-    firstLoad = false;
-  };
+  sock.onopen = () => sock.send(JSON.stringify({ rids: UiContext.rids }));
   sock.onmessage = (message) => {
     const msg = JSON.parse(message.data);
     const $newTr = $(msg.html);