how to io.emit?

[tmdgusya]

i want to use io.emit in my code

in using..

ChattingRouter.on("sendMessage", async (sock, args) => {
  const eventName = args.shift();
  const { name, chat, room_id, user_id } = args.shift();
  console.log(sock);
  const message = await model.Message.create({
    content: chat,
    user_id,
    room_id,
  });
  sock.emit(`receiveMessage${room_id}`, {
    id: message.id,
    name,
    chat,
    user_id,
  });
});

but i want to code write below

ChattingRouter.on("sendMessage", async (sock, args) => {
  const eventName = args.shift();
  const { name, chat, room_id, user_id } = args.shift();
  console.log(sock);
  const message = await model.Message.create({
    content: chat,
    user_id,
    room_id,
  });
  io.emit(`receiveMessage${room_id}`, {
    id: message.id,
    name,
    chat,
    user_id,
  });
});