Package path ./runnables/graph is not exported from package

[aidityasadhakim]

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Example Code

Here's a simple code following the tutorials given, I write this code in Next JS


import { BaseMessage } from "@langchain/core/messages";
import { Annotation, END, START, StateGraph } from "@langchain/langgraph";
import { ChatGroq } from "@langchain/groq";

const model = new ChatGroq({
  model: "llama-3.1-8b-instant",
  temperature: 0,
  apiKey: process.env.GROQ_API_KEY,
  streaming: true,
});

const MAX_MESSAGES = 5;

let storedMessages: BaseMessage[] = [];

const MessagesAnnotation = Annotation.Root({
  messages: Annotation<BaseMessage[]>({
    reducer: (state: BaseMessage[], update: BaseMessage[]) => {
      const allMessages = [...storedMessages, ...update];
      storedMessages = allMessages.slice(-MAX_MESSAGES);
      return storedMessages;
    },
    default: () => storedMessages,
  }),
});

async function callModel(state: typeof MessagesAnnotation.State) {
  const response = await model.invoke(state.messages);

  return { messages: [response] };
}

const workflow = new StateGraph(MessagesAnnotation)
  .addNode("agent", callModel)
  .addEdge(START, "agent")
  .addEdge("agent", END);

export const app = workflow.compile();

Description

I'm trying to use langgraph and moving from langchain chat models, I follow the quick tutorial but immediately got this error, I'm working in Next JS and yarn for package installer.

What I've done?:

• Remove node_modules and yarn install again
• Update to the latest version of @langchain/core @lanchain/community @langgraph
• Checked the @langchain\core\package.json and found no /runnables/graph in there

System Info

Here's my package version that I'm using

"@langchain/community": "^0.3.14",
"@langchain/core": "^0.3.43",
"@langchain/groq": "^0.0.13",
"@langchain/langgraph": "^0.2.20",

Error log

 ⨯ ./node_modules/@langchain/langgraph/dist/graph/graph.js:3:1
Module not found: Package path ./runnables/graph is not exported from package \node_modules\@langchain\core