custom_payload packet won't encode properly.

[ ] The FAQ doesn't contain a resolution to my issue

Versions

• minecraft-protocol: 1.18.2
• server: vanilla/spigot/paper, every server version.
• node: v18.17.0
• minecraft-packets@1.5.0
• minecraft-protocol@1.44.0

Detailed description of a problem

A clear and concise description of what the problem is.

node-protocol cannot convert json -> byte from generated json
custom_payload packet cannot be encoded back from json.

Current code

const { createDeserializer, createSerializer } = require('minecraft-protocol');

const serializerMap = new Map();
const deserializerMap = new Map();

function getOrCreateSerializer(state, version, isServer) {
  const key = `${state}_${version}_${isServer}`;
  if (!serializerMap.has(key)) {
    serializerMap.set(key, createSerializer({ state, version, isServer }));
  }
  return serializerMap.get(key);
}

function getOrCreateDeserializer(state, version, isServer) {
  const key = `${state}_${version}_${isServer}`;
  if (!deserializerMap.has(key)) {
    deserializerMap.set(key, createDeserializer({ state, version, isServer }));
  }
  return deserializerMap.get(key);
}

function convertObjectToBuffer(state, version, json, isServer) {
  const serializer = getOrCreateSerializer(state, version, isServer);

  const data = serializer.createPacketBuffer(JSON.parse(json));
  const arrByte = Uint8Array.from(data);

  return arrByte;
}

function convertBufferToObject(state, version, buffer, isServer) {
  const buf = Buffer.from(buffer);
  const deserializer = getOrCreateDeserializer(state, version, isServer);
  const data = deserializer.parsePacketBuffer(buf).data;
  const out = JSON.stringify(data);

  return out;
}

const chat = [3,8,116,101,115,116,32,97,115,100]
const positionlook = [18,0,0,0,0,0,0,0,0,64,87,64,0,0,0,0,0,0,0,0,0,0,0,0,0,-61,94,13,127,-65,-78,-14,-85,1]
const payload = [10,15,109,105,110,101,99,114,97,102,116,58,98,114,97,110,100,7,118,97,110,105,108,108,97]

console.log("Testing Chat");
testLibrary(chat);
console.log("Testing PositionLook");
testLibrary(positionlook);
console.log("Testing Payload");
testLibrary(payload);

function testLibrary(array) {
    const decodedData = convertBufferToObject('play', '1.18.2', array, true);
    console.log(decodedData);

    const payloadData = convertObjectToBuffer('play', '1.18.2', decodedData, false);
    console.log(payloadData);

    console.log("Done!");
}

Expected behavior

custom_payload should be converted back to Buffer

Behavior i got

Throws error when encoding custom_payload

Testing Payload
{"name":"custom_payload","params":{"channel":"minecraft:brand","data":{"type":"Buffer","data":[7,118,97,110,105,108,108,97]}}}
node:buffer:404
throw new ERR_INVALID_ARG_VALUE.RangeError('size', size);
^

RangeError [ERR_INVALID_ARG_VALUE]: The argument 'size' is invalid. Received NaN

Additional Context

All other packets including chunk/declare command/positions works, only custom_payload is affected.

Start with the createSerializer and createPacketBuffer entry points and reproduce the custom_payload case using the provided payload array and JSON output for Minecraft 1.18.2. Trace why the decoded Buffer-shaped data produces an invalid size during encoding; done means custom_payload round-trips back to a Buffer without breaking the other packet examples.