Unable to import langchain

alphaceph1 · September 29, 2024, 2:44pm

Hi,

Hope this finds you well. I am trying to

import { HuggingFaceInference } from ‘langchain/integrations/huggingface’;
import { PromptTemplate } from ‘langchain/prompts’;
import { RunnableSequence } from ‘langchain/schema/runnable’;

But i keep getting Cannot find module ‘langchain/integrations/huggingface’ or its corresponding type declarations.ts(2307).

i have tried uninstalling langchain, i tried restarting the Ts Server, tried installing different version of langchain but nothing seems to work
If you could please help that would be so great.

Thank you so much

John6666 · September 30, 2024, 4:48am

I can’t read TypeScript code at all, but it seems that up to a certain point there was a bug in the LangChain library for TS that made installation difficult.

github.com/langchain-ai/langchainjs

[ERROR] Langchain in typescript can't find a bunch of modules!

opened 10:23AM - 04 Apr 23 UTC

closed 04:02PM - 04 Apr 23 UTC

adifyr

question env/packaging

Hi. I installed langchain for my Node Typescript project. When I try to run the …sample, I get the following errors in the terminal: ``` node_modules/langchain/dist/cache.d.ts:1:38 - error TS2307: Cannot find module 'redis' or its corresponding type declarations. 1 import type { RedisClientType } from "redis"; ~~~~~~~ node_modules/langchain/dist/embeddings/cohere.d.ts:54:31 - error TS2307: Cannot find module 'cohere-ai' or its corresponding type declarations. 54 cohere: typeof import("cohere-ai"); ~~~~~~~~~~~ node_modules/langchain/dist/llms/cohere.d.ts:21:31 - error TS2307: Cannot find module 'cohere-ai' or its corresponding type declarations. 21 cohere: typeof import("cohere-ai"); ~~~~~~~~~~~ node_modules/langchain/dist/llms/hf.d.ts:29:36 - error TS2307: Cannot find module '@huggingface/inference' or its corresponding type declarations. 29 HfInference: typeof import("@huggingface/inference").HfInference; ~~~~~~~~~~~~~~~~~~~~~~~~ node_modules/langchain/dist/llms/openai-chat.d.ts:2:15 - error TS2614: Module '"../util/axios-fetch-adapter.js"' has no exported member 'StreamingAxiosConfiguration'. Did you mean to use 'import StreamingAxiosConfiguration from "../util/axios-fetch-adapter.js"' instead? 2 import type { StreamingAxiosConfiguration } from "../util/axios-fetch-adapter.js"; ~~~~~~~~~~~~~~~~~~~~~~~~~~~ node_modules/langchain/dist/llms/openai.d.ts:2:15 - error TS2614: Module '"../util/axios-fetch-adapter.js"' has no exported member 'StreamingAxiosConfiguration'. Did you mean to use 'import StreamingAxiosConfiguration from "../util/axios-fetch-adapter.js"' instead? 2 import type { StreamingAxiosConfiguration } from "../util/axios-fetch-adapter.js"; ~~~~~~~~~~~~~~~~~~~~~~~~~~~ node_modules/langchain/dist/llms/replicate.d.ts:17:34 - error TS2307: Cannot find module 'replicate' or its corresponding type declarations. 17 Replicate: typeof import("replicate").Replicate; ~~~~~~~~~~~ node_modules/langchain/dist/sql_db.d.ts:1:67 - error TS2307: Cannot find module 'typeorm' or its corresponding type declarations. 1 import type { DataSource as DataSourceT, DataSourceOptions } from "typeorm"; ~~~~~~~~~ node_modules/langchain/dist/text_splitter.d.ts:1:32 - error TS2307: Cannot find module '@dqbd/tiktoken' or its corresponding type declarations. 1 import type * as tiktoken from "@dqbd/tiktoken"; ~~~~~~~~~~~~~~~~ node_modules/langchain/dist/util/sql_utils.d.ts:1:52 - error TS2307: Cannot find module 'typeorm' or its corresponding type declarations. 1 import type { DataSource, DataSourceOptions } from "typeorm"; ~~~~~~~~~ node_modules/langchain/dist/vectorstores/chroma.d.ts:1:52 - error TS2307: Cannot find module 'chromadb' or its corresponding type declarations. 1 import type { ChromaClient as ChromaClientT } from "chromadb"; ~~~~~~~~~~ node_modules/langchain/dist/vectorstores/hnswlib.d.ts:1:69 - error TS2307: Cannot find module 'hnswlib-node' or its corresponding type declarations. 1 import type { HierarchicalNSW as HierarchicalNSWT, SpaceName } from "hnswlib-node"; ~~~~~~~~~~~~~~ node_modules/langchain/dist/vectorstores/pinecone.d.ts:1:42 - error TS2307: Cannot find module '@pinecone-database/pinecone/dist/pinecone-generated-ts-fetch' or its corresponding type declarations. 1 import type { VectorOperationsApi } from "@pinecone-database/pinecone/dist/pinecone-generated-ts-fetch"; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ node_modules/langchain/dist/vectorstores/supabase.d.ts:1:37 - error TS2307: Cannot find module '@supabase/supabase-js' or its corresponding type declarations. 1 import type { SupabaseClient } from "@supabase/supabase-js"; ~~~~~~~~~~~~~~~~~~~~~~~ Found 14 errors in 14 files. Errors Files 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/cache.d.ts:1 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/embeddings/cohere.d.ts:54 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/llms/cohere.d.ts:21 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/llms/hf.d.ts:29 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/llms/openai-chat.d.ts:2 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/llms/openai.d.ts:2 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/llms/replicate.d.ts:17 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/sql_db.d.ts:1 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/text_splitter.d.ts:1 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/util/sql_utils.d.ts:1 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/vectorstores/chroma.d.ts:1 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/vectorstores/hnswlib.d.ts:1 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/vectorstores/pinecone.d.ts:1 1 ../../../../../users/adityam/documents/code/node-sandbox/node_modules/langchain/dist/vectorstores/supabase.d.ts:1 ``` I did do `npm install -S langchain`. And I set all the parameters in the tsconfig.json & package.json to the recommended values. Here is my package.json: ```json { "name": "sandbox", "version": "1.0.0", "description": "NodeJS sandbox.", "main": "dist/index.js", "type": "module", "scripts": { "start": "node dist/index.js", "build": "tsc && npm run start" }, "keywords": [], "author": "", "license": "ISC", "dependencies": { "langchain": "^0.0.47" }, "devDependencies": { "@types/node": "^18.15.11" } } ``` And here is my tsconfig.json: ```json { "compilerOptions": { "target": "ES2020", "module": "NodeNext", "sourceMap": true, "outDir": "./dist", "strict": true, "esModuleInterop": true, "moduleResolution": "nodenext" }, "include": [ "./src/**/*", "./assets/**/*" ], "exclude": [ "node_modules" ] } ``` **What's going on? Will I have to install all these modules separately?**

It is not impossible that this is a TS2307 problem.

In any case, it seems to me that you are definitely stumbling on some TS-specific issue. If you have a recent example that worked well, the quickest thing to do is to copy it…