@langchain/ollama

This package contains the LangChain.js integrations for Ollama via the ollama TypeScript SDK.

Installation

1npm install @langchain/ollama @langchain/core

TODO: add setup instructions for Ollama locally

Chat Models

1import { ChatOllama } from "@langchain/ollama";
2
3const model = new ChatOllama({
4  model: "llama3",  // Default value.
5});
6
7const result = await model.invoke(["human", "Hello, how are you?"]);

Development

To develop the @langchain/ollama package, you'll need to follow these instructions:

Install dependencies

1yarn install

Build the package

1yarn build

Or from the repo root:

1yarn build --filter=@langchain/ollama

Run tests

Test files should live within a tests/ file in the src/ folder. Unit tests should end in .test.ts and integration tests should end in .int.test.ts:

1$ yarn test
2$ yarn test:int

Lint & Format

Run the linter & formatter to ensure your code is up to standard:

1yarn lint && yarn format

Adding new entrypoints

If you add a new file to be exported, either import & re-export from src/index.ts, or add it to the entrypoints field in the config variable located inside langchain.config.js and run yarn build to generate the new entrypoint.