I am trying to implement the collaborative code-editor, using yjs and ws.

I want to isolate the editor into rooms i.e only the room members can edit it but the problem i am facing here is that the changes are begin broadcasted to all the rooms.

below is the back-end code, i also tried socket.io but yjs seem to be not compatible.

const { setupWSConnection } = require("y-websocket/bin/utils");
const WebSocket = require("ws");
const Y = require("yjs");
const docs = new Map();
const connections = new Map();

module.exports = (server) => {
    const wsServer = new WebSocket.Server({ server, perMessageDeflate: false });

    wsServer.on("connection", (ws, req) => {
        try {
            const url = new URL(req.url, `http://${req.headers.host}`);
            let roomId = url.searchParams.get("room");

            if (!roomId) {
                console.log("❌ No room ID provided, closing connection.");
                ws.close();
                return;
            }

            console.log(`