feat: claude function call

app/api/langchain-tools/pdf_browser.ts

@@ -1,5 +1,5 @@
 import axiosMod, { AxiosStatic } from "axios";
-import { WebPDFLoader } from "langchain/document_loaders/web/pdf";
+import { WebPDFLoader } from "@langchain/community/document_loaders/web/pdf";
 import { MemoryVectorStore } from "langchain/vectorstores/memory";
 import { Tool } from "@langchain/core/tools";
 import {

app/api/langchain/tool/agent/agentapi.ts

@@ -8,6 +8,7 @@ import {
   AgentExecutor,
   AgentStep,
   createToolCallingAgent,
+  createReactAgent,
 } from "langchain/agents";
 import { ACCESS_CODE_PREFIX, ServiceProvider } from "@/app/constant";
 
@@ -414,10 +415,10 @@ export class AgentApi {
       ]);
 
       const lastMessageContent = reqBody.messages.slice(-1)[0].content;
-      const lastHumanMessage =
-        typeof lastMessageContent === "string"
-          ? new HumanMessage(lastMessageContent)
-          : new HumanMessage({ content: lastMessageContent });
+      // const lastHumanMessage =
+      //   typeof lastMessageContent === "string"
+      //     ? new HumanMessage(lastMessageContent)
+      //     : new HumanMessage({ content: lastMessageContent });
       const agent = createToolCallingAgent({
         llm,
         tools,
@@ -432,7 +433,7 @@ export class AgentApi {
           {
             input: lastMessageContent,
             chat_history: pastMessages,
-            // signal: this.controller.signal,
+            signal: this.controller.signal,
           },
           { callbacks: [handler] },
         )

next.config.mjs

@@ -6,6 +6,8 @@ console.log("[Next] build mode", mode);
 const disableChunk = !!process.env.DISABLE_CHUNK || mode === "export";
 console.log("[Next] build with chunk: ", !disableChunk);
 
+process.env.LANGCHAIN_CALLBACKS_BACKGROUND = true;
+
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   webpack(config) {