backend for twitch chat widgets

twitch/public/chat.js

@@ -0,0 +1,38 @@
+const chatContainer = document.getElementById("chat");
+
+async function sync() {
+    let eventSource;
+    try {
+        eventSource = new EventSource("/twitch/sse/chat");
+    } catch (err) {
+        console.error("Failed to connect to event source", err);
+        return;
+    }
+
+    eventSource.addEventListener("error", () => {
+        eventSource.close();
+        console.error("Connection lost, or an error has occurred.");
+        console.log("Attempting to reconnect...");
+
+        setTimeout(() => {
+            sync();
+        }, 1000);
+    });
+
+    eventSource.addEventListener("chat", event => {
+        console.log(`[${chat}] ${event.data}`);
+        const messageEl = document.createElement("p");
+        messageEl.innerText = event.data;
+        chatContainer.appendChild(messageEl);
+    });
+
+    eventSource.addEventListener("open", () => {
+        console.log("Connected.");
+    });
+}
+
+function twitchEmoteURL(emoteID) {
+    return `https://static-cdn.jtvnw.net/emoticons/v2/${emoteID}/default/dark/1.0#e=0`
+}
+
+sync();