Yevhenii TS,React,Next js•6mo ago

util/convex is not exported by package "langchain"

I have this error. I use tutorial for some llm staff. i need create in folder convex - folder langchain and write this code

 export * from "langchain/util/convex";

 export * from "langchain/util/convex";

but i have problem - Cannot find module 'langchain/util/convex' or its corresponding type declarations.ts(2307)

23 Replies

v•6mo ago

Do you have langchain community installed

erquhart•6mo ago

I think langchain automatically installs that should just need to npm i langchain hmm maybe not looking at the source

Yevhenii TS,React,Next jsOP•6mo ago

yes. i look in folder langchain/util and dont see file this name convex

erquhart•6mo ago

it would be in your node_modules, not your project source

Yevhenii TS,React,Next jsOP•6mo ago

yes, i know

erquhart•6mo ago

I think v is right, you'll need to install @langchain/community explicitly, just curious why the convex tutorial and example repo doesn't mention this

v•6mo ago

I'm going to boot up on PC and see

Yevhenii TS,React,Next jsOP•6mo ago

i install langchain and langchain/community too

 "@langchain/community": "^0.2.20",
    "@langchain/openai": "^0.2.4",
    "@radix-ui/react-dialog": "^1.1.1",
    "@radix-ui/react-slot": "^1.1.0",
    "ai": "^3.2.35",
    "class-variance-authority": "^0.7.0",
    "clsx": "^2.1.1",
    "convex": "^1.13.2",
    "langchain": "^0.2.10",
    "lucide-react": "^0.414.0",
    "next": "14.2.4",
    "react": "^18",
    "react-dom": "^18",
    "tailwind-merge": "^2.4.0",
    "tailwindcss-animate": "^1.0.7"

 "@langchain/community": "^0.2.20",
    "@langchain/openai": "^0.2.4",
    "@radix-ui/react-dialog": "^1.1.1",
    "@radix-ui/react-slot": "^1.1.0",
    "ai": "^3.2.35",
    "class-variance-authority": "^0.7.0",
    "clsx": "^2.1.1",
    "convex": "^1.13.2",
    "langchain": "^0.2.10",
    "lucide-react": "^0.414.0",
    "next": "14.2.4",
    "react": "^18",
    "react-dom": "^18",
    "tailwind-merge": "^2.4.0",
    "tailwindcss-animate": "^1.0.7"

v•6mo ago

Hmmm

Michal Srb•6mo ago

If this is broken in recent langchain version you could downgrade to the version used in our demos: "langchain": "0.0.189", https://github.com/get-convex/convex-ai-chat-langchain

GitHub

GitHub - get-convex/convex-ai-chat-langchain: AI chat with context ...

AI chat with context retrieval using Convex and LangChain - get-convex/convex-ai-chat-langchain

erquhart•6mo ago

That's package locked directly to 0.0.189, I believe that semver range will currently resolve to latest (0.2), which has this issue. May need to pin 0.0.189. But pretty sure it's not broken, just dependencies have moved.

Yevhenii TS,React,Next jsOP•6mo ago

maybe changed path

erquhart•6mo ago

@Yevhenii TS,React,Next js try export * from '@langchain/community/util/convex actually it's "utils", plural

erquhart•6mo ago

https://unpkg.com/browse/@langchain/community@0.2.20/utils/

UNPKG - @langchain/community

The CDN for @langchain/community

v•6mo ago

Yevhenii TS,React,Next jsOP•6mo ago

v•6mo ago

export * from "@langchain/community/utils/convex"; does this not work for you?

Yevhenii TS,React,Next jsOP•6mo ago

yes . thx. convex should fix docs

v•6mo ago

also langchain also erquhart said this first i was just repeating what he said, hes the goat

Yevhenii TS,React,Next jsOP•6mo ago

thx for help) thanks guys, now my app working. convex and langchain fix this pls

v•6mo ago

i made an issue on the langchain github ig i could make a pr

v•6mo ago

my pr was merged https://js.langchain.com/v0.2/docs/integrations/vectorstores/convex/

Convex | 🦜️🔗 Langchain

LangChain.js supports Convex as a vector store, and supports the standard similarity search.

ian•6mo ago

I put up a PR to update the template repo - anyone care to see if I missed anything? https://github.com/get-convex/convex-ai-chat-langchain/pull/3

GitHub

Upgrade by ianmacartney · Pull Request #3 · get-convex/convex-ai-ch...

Seems to be working with latest langchain By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

util/convex is not exported by package "langchain"

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