let eventId = 0;
const packetToIdMap = new Map();
const idToPacketMap = new Map();
export function allPackets() {
  return Array.from(idToPacketMap.values());
}
export function idFromPacket(Packet) {
  return packetToIdMap.get(Packet);
}
export function packetFromId(id) {
  return idToPacketMap.get(id);
}
export function registerPacket(Packet) {
  if (packetToIdMap.has(Packet)) {
    return;
  }
  const id = eventId++;
  packetToIdMap.set(Packet, id);
  idToPacketMap.set(id, Packet);
  return id;
}