// Copyright © Aptos
// SPDX-License-Identifier: Apache-2.0

export type TypedMessage<MessageType extends string = string> = {
  __messageType: MessageType;
};
export type TypedMessageConstructor<
  TMessage extends TypedMessage<MessageType>,
  MessageType extends string,
> = {
  TYPE: MessageType;
  new (...args: any[]): TMessage;
};

export function isTypedMessage<
  TMessage extends TypedMessage<MessageType>,
  MessageType extends string,
>(
  messageCls: TypedMessageConstructor<TMessage, MessageType>,
  message: any,
): message is TMessage {
  return message?.__messageType === messageCls.TYPE;
}