Websocket sometimes does not receive message properly

Question

I'm trying to use Bun to create an app that can interact with the Discord gateway. I tried the same code in node.js and it works properly, but in bun it only works sometimes. What I am doing is:

1. Declare a paylod for identification.
2. When the websocket connects, Discord sends the opcode 10 (hello)
3. On the onmessage event, I properly receive the opcode 10, which is the Hello one, so I use the ping function to keep the connection alive and send the identification.
4. The t in the payload is the gateway event name, and when the message is a payload in which the t is READY, that means that the app is working properly.

The problem is that sometimes it works and sometimes it doesn't. Sometimes printing t returns READY, sometimes it's not even printing out. I have no idea on why this happens. Here's the code:

const ws = new WebSocket("wss://gateway.discord.gg/?v=10&encoding=json");

const payload = {
  op: 2,
  d: {
    token: TOKEN,
    intents: 513,
    properties: {
      os: "linux",
      browser: "chrome",
      device: "chrome",
    },
  },
};
ws.on("open", (e) => {
  console.log("open");
});

ws.on("message", (e) => {
  const p = JSON.parse(e);
  const { t, d, op } = p;
  if (op == 10) {
    ping(d.heartbeat_interval);
    console.log("interval started");
    ws.send(JSON.stringify(payload));

  }
  console.log(op);
  console.log(t);
});

function ping(ms) {
  return setInterval(() => {
    ws.send(JSON.stringify({ op: 1, d: 251 }));
  }, ms);
}

Please keep in mind that I'm working with the bun environment! Thanks!