Class for managing chat message history using Google's Firestore as a storage backend. Extends the BaseListChatMessageHistory class.
const chatHistory = new FirestoreChatMessageHistory({ collectionName: "langchain", sessionId: "lc-example", userId: "a@example.com", config: { projectId: "your-project-id" },});const chain = new ConversationChain({ llm: new ChatOpenAI(), memory: new BufferMemory({ chatHistory }),});const response = await chain.invoke({ input: "What did I just say my name was?",});console.log({ response }); Copy
const chatHistory = new FirestoreChatMessageHistory({ collectionName: "langchain", sessionId: "lc-example", userId: "a@example.com", config: { projectId: "your-project-id" },});const chain = new ConversationChain({ llm: new ChatOpenAI(), memory: new BufferMemory({ chatHistory }),});const response = await chain.invoke({ input: "What did I just say my name was?",});console.log({ response });
Method to add a new message to the Firestore collection. The message is passed as a BaseMessage object.
The message to be added as a BaseMessage object.
Method to delete all messages from the Firestore collection associated with the current session.
Method to retrieve all messages from the Firestore collection associated with the current session. Returns an array of BaseMessage objects.
Array of stored messages
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Class for managing chat message history using Google's Firestore as a storage backend. Extends the BaseListChatMessageHistory class.
Example