chatHistory.ts•1.19 kB
/**
* Copyright (C) 2025 by Fonoster Inc (https://fonoster.com)
* http://github.com/fonoster/fonoster
*
* This file is part of Fonoster
*
* Licensed under the MIT License (the "License");
* you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* https://opensource.org/licenses/MIT
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { AIMessage, HumanMessage } from "@langchain/core/messages";
import { ChatMessageHistory } from "langchain/stores/message/in_memory";
export function createChatHistory() {
const chatHistory = new ChatMessageHistory();
return {
getMessages: () => chatHistory.getMessages(),
addUserMessage: (text: string) =>
chatHistory.addMessage(new HumanMessage(text)),
addAIMessage: (text: string) => chatHistory.addMessage(new AIMessage(text)),
clear: () => chatHistory.clear()
};
}