fix chat history

packages/components/src/Interface.ts

@@ -107,9 +107,12 @@ export interface INode extends INodeProperties {
         search: (nodeData: INodeData, options?: ICommonObject) => Promise<any>
         delete: (nodeData: INodeData, options?: ICommonObject) => Promise<void>
     }
+    memoryMethods?: {
+        clearSessionMemory: (nodeData: INodeData, options?: ICommonObject) => Promise<void>
+        getChatMessages: (nodeData: INodeData, options?: ICommonObject) => Promise<string>
+    }
     init?(nodeData: INodeData, input: string, options?: ICommonObject): Promise<any>
     run?(nodeData: INodeData, input: string, options?: ICommonObject): Promise<string | ICommonObject>
-    clearSessionMemory?(nodeData: INodeData, options?: ICommonObject): Promise<void>
 }
 
 export interface INodeData extends INodeProperties {

packages/components/src/utils.ts

@@ -549,6 +549,18 @@ export const convertChatHistoryToText = (chatHistory: IMessage[] = []): string =
         .join('\n')
 }
 
+/**
+ * Serialize array chat history to string
+ * @param {IMessage[]} chatHistory
+ * @returns {string}
+ */
+export const serializeChatHistory = (chatHistory: string | Array<string>) => {
+    if (Array.isArray(chatHistory)) {
+        return chatHistory.join('\n')
+    }
+    return chatHistory
+}
+
 /**
  * Convert schema to zod schema
  * @param {string | object} schema