Method type

src/user/message.ts:634–639

* Get the type from the message. * > Tips: MessageType is Enum here. * - MessageType.Unknown * - MessageType.Attachment * - MessageType.Audio * - MessageType.Contact * - MessageType.Emoticon * - MessageType.Image

()

   * }
   */
  public type (): MessageType {
    if (!this.payload) {
      throw new Error('no payload')
    }
    return this.payload.type || MessageType.Unknown
  }

  /**
   * Check if a message is sent by self.