GET_Combined.ts

export class ChatGptConversationService {
  /* ... */ 
  getConversation = (id: string) =>
		Promise.resolve(
			ConversationStorage[id]?.messages
				.filter((m) => m.role !== "system")
				.map<Message>((m) => ({
					text: String(m.content),
					sent: m.sent,
					source: m.role === "user" ? "user" : "bot",
				}))
		);
  /* ... */
}


export class InMemoryConversationService implements ConversationService {
  /* ... */
  getConversation = async (id: string): Promise<Conversation> => {
		const messages = await this.chatgpt.getConversation(id);
		if (!messages) {
			return [];
		}
		return messages;
	};
  /* ... */
}