reconnect on ws connection loss

assets/index.js

@@ -14,10 +14,11 @@ let area;
 let ws;
 
 const uuid = self.crypto.randomUUID();
+const wsUrl = "ws://localhost:3000/ws";
 
 function setup() {
   area = document.querySelector(`#${areaId}`);
-  ws = new WebSocket("ws://localhost:3000/ws");
+  ws = new WebSocket(wsUrl);
 
   setupUi();
   setupWs();
@@ -29,6 +30,12 @@ function setupUi() {
 }
 
 function setupWs() {
+  ws.onclose = function () {
+    setTimeout(() => {
+      ws = new WebSocket(wsUrl);
+    }, 2000);
+  };
+
   ws.onmessage = function (e) {
     let payload = JSON.parse(e.data);
     if (payload.client !== uuid) {
@@ -37,7 +44,7 @@ function setupWs() {
   };
 }
 
-function onSelectionChange(event) {
+function onSelectionChange() {
   const activeElement = document.activeElement;
 
   if (activeElement && activeElement.id === areaId) {