feat: Next.js + Socket.IO 3-mode game (Skribbl, Gartic, Color)

server.js

@@ -0,0 +1,45 @@
+// Initialise tracing FIRST so auto-instrumentation can patch http/etc.
+require("./tracing");
+
+const http = require("http");
+const next = require("next");
+const { Server } = require("socket.io");
+const { parse } = require("url");
+
+const dev = process.env.NODE_ENV !== "production";
+const hostname = "0.0.0.0";
+const port = parseInt(process.env.PORT || "3000", 10);
+
+const app = next({ dev, hostname, port });
+const handle = app.getRequestHandler();
+
+app.prepare().then(() => {
+  const server = http.createServer((req, res) => {
+    try {
+      const parsedUrl = parse(req.url, true);
+      handle(req, res, parsedUrl);
+    } catch (err) {
+      console.error("Error handling request:", err);
+      res.statusCode = 500;
+      res.end("internal error");
+    }
+  });
+
+  const io = new Server(server, {
+    cors: { origin: true, credentials: true },
+    path: "/socket.io",
+    transports: ["websocket", "polling"],
+  });
+
+  // Register socket handlers (compiled JS at runtime via require)
+  const { registerHandlers } = require("./server/socket-handlers.js");
+  registerHandlers(io);
+
+  server.listen(port, hostname, () => {
+    console.log(`Server ready on :${port}`);
+  });
+
+  process.on("SIGINT", () => {
+    server.close(() => process.exit(0));
+  });
+});