LangGraph V1 Alpha! 🚀

[christian-bromann]

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Issue Content

Hey LangChain community! LangGraph v1 alpha is out!

We've released v1 alpha versions for langgraph, langchain, @langchain/core, and some key integrations packages like @langchain/openai and @langchain/anthropic.

We're also releasing a new docs site with consolidated open source docs: https://docs.langchain.com/oss/javascript/langgraph/overview.

We've written up a blog post highlighting improvements and changes in these releases: https://blog.langchain.com/langchain-langchain-1-0-alpha-releases/.

LangGraph v1 has no breaking changes compared to our latest v0.6.6, other than the deprecation of createReactAgent, which has moved to langchain and can be used via

import { createAgent } from `langchain`

We'd love your feedback! Please try it out with:

npm install @langchain/langgraph@next

We're working on publishing the stable release for 1.0 in late October.

[yanedie]

I hope the code in the v1 alpha documentation can be run. I am learning the langgraph.js through the docs and found out that I can't achieve the same result from the official demo. What I did was copy the code and run it. That's it.

https://langchain-ai.github.io/langgraphjs/how-tos/review-tool-calls/
Chapter: Example of approving tool

Expect:

================================ human Message (1) =================================
what's the weather in SF?
================================ ai Message (1) =================================
[
  {
    type: 'text',
    text: 'Let me check the weather in San Francisco for you.'
  },
  {
    type: 'tool_use',
    id: 'toolu_01PTn9oqTP6EdFabfhfvELuy',
    name: 'weather_search',
    input: { city: 'San Francisco' }
  }
]

Real:

================================ human Message (1) =================================
what's the weather in SF?
================================ ai Message (1) =================================

TypeError: Cannot read properties of undefined (reading 'length')
    at file:///D:/Coding/langchain/module-3/simple-usage.ts:181:51
    at processTicksAndRejections (node:internal/process/task_queues:105:5)

And the tutorial (Foundation: Introduction to LangGraph) in the langchain academy is outdated. The deprecated method (static breakpoint) is present in the video.

[nightire]

@yanedie Have you noticed they provide a new doc site? https://docs.langchain.com/oss/javascript/langgraph/overview