Function isDataValid

packages/socket.io-parser/lib/index.ts:408–428

(type: PacketType, payload: unknown)

}

function isDataValid(type: PacketType, payload: unknown) {
  switch (type) {
    case PacketType.CONNECT:
      return payload === undefined || isObject(payload);
    case PacketType.DISCONNECT:
      return payload === undefined;
    case PacketType.EVENT:
      return (
        Array.isArray(payload) &&
        (typeof payload[0] === "number" ||
          (typeof payload[0] === "string" &&
            RESERVED_EVENTS.indexOf(payload[0]) === -1))
      );
    case PacketType.ACK:
      return Array.isArray(payload);
    case PacketType.CONNECT_ERROR:
      return typeof payload === "string" || isObject(payload);
    default:
      return false;
  }
}

export function isPacketValid(packet: Packet): boolean {
  return (