William Jeynes
26 lines
786 B
TypeScript
26 lines
786 B
TypeScript
import { AIMessage, ToolMessage } from "@langchain/core/messages";
|
|
import { GraphNode } from "@langchain/langgraph";
|
|
import { MessagesState } from "../state";
|
|
|
|
export function createToolNode(tools: any): GraphNode<typeof MessagesState> {
|
|
return async (state) => {
|
|
const lastMessage = state.messages.at(-1);
|
|
|
|
//STARTTEMP
|
|
return {messages: [new AIMessage("yeman")]}
|
|
//ENDTEMP
|
|
|
|
if (lastMessage == null || !AIMessage.isInstance(lastMessage)) {
|
|
return { messages: [] };
|
|
}
|
|
|
|
const result: ToolMessage[] = [];
|
|
for (const toolCall of (lastMessage as AIMessage).tool_calls ?? []) {
|
|
const tool = tools[toolCall.name];
|
|
const observation = await tool.invoke(toolCall);
|
|
result.push(observation);
|
|
}
|
|
|
|
return { messages: result };
|
|
};
|
|
} |