Broadcast real‑time events to connected users

import { useState } from "react";import {  useBroadcastEvent,  useEventListener,} from "./liveblocks.config";
export default function Broadcast() {  const [count, setCount] = useState(0);  const broadcast = useBroadcastEvent();
  useEventListener(({ connectionId, event }) => {    switch (event.type) {      case "increase":        setCount((count) => count + 1);        break;      case "decrease":        setCount((count) => count === 0 ? 0 : count - 1);        break;    }  });
  return (    <>      {count}      <button onClick={() => broadcast({ type: "decrease" })}>        -      </button>      <button onClick={() => broadcast({ type: "increase" })}>        +      </button>    </>  )}