Please support stateful tools in langchain-js

[waltmayfield]

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Example Code

import { InjectedState } from "@langchain/langgraph/prebuilt";

Module '"@langchain/langgraph/prebuilt"' has no exported member 'InjectedState'.ts(2305)

Description

I'm trying to inject state into a langgraph tool build with langgraph-js. I see that the python version of langgraph has "InjectedState" to allow for some function arguments to be populated from the state graph.

Please support this in the javascript version of langgraph.

[1] https://langchain-ai.github.io/langgraph/reference/prebuilt/#langgraph.prebuilt.tool_node.InjectedState

System Info

$npm info langchain

[email protected] | MIT | deps: 12 | versions: 316
Typescript bindings for langchain
https://github.com/langchain-ai/langchainjs/tree/main/langchain/

keywords: llm, ai, gpt3, chain, prompt, prompt engineering, chatgpt, machine learning, ml, openai, embeddings, vectorstores

dist
.tarball: https://registry.npmjs.org/langchain/-/langchain-0.3.21.tgz
.shasum: 5f41f9e11f7f087b1883cc579c2f8e11597d6e4f
.integrity: sha512-fpor/V/xJRoLM7s1yQGlUE6aZIe6LLm7ciZcstNbBUYdFpCSigvADsW2cqlBCdbMXJxb5I/z9jznjGnmciJ+aw==
.unpackedSize: 2.9 MB

dependencies:
@langchain/openai: >=0.1.0 <0.6.0 jsonpointer: ^5.0.1 uuid: ^10.0.0
@langchain/textsplitters: >=0.0.0 <0.2.0 langsmith: >=0.2.8 <0.4.0 yaml: ^2.2.1
js-tiktoken: ^1.0.12 openapi-types: ^12.1.3 zod-to-json-schema: ^3.22.3
js-yaml: ^4.1.0 p-retry: 4 zod: ^3.22.4

maintainers:

• nfcampos [email protected]
• jacoblee93 [email protected]
• andrewnguonly [email protected]
• benjamincburns [email protected]
• davidduong [email protected]
• hwchase17 [email protected]
• basproul [email protected]

dist-tags:
latest: 0.3.21 tag-for-publishing-older-releases: 0.2.20 next: 0.3.2-rc.0

published yesterday by benjamincburns [email protected]

[palmwimck]

Would also like this - did you find any workaround?