@langchain/deepseek

This package contains the LangChain.js integrations for DeepSeek.

Installation

``bash npm2yarn
npm install @langchain/deepseek @langchain/core
`

Chat models

This package adds support for DeepSeek's chat model inference.

Set the necessary environment variable (or pass it in via the constructor):

`bash
export DEEPSEEK_API_KEY=
`

`typescript
import { ChatDeepSeek } from "@langchain/deepseek";
import { HumanMessage } from "@langchain/core/messages";

const model = new ChatDeepSeek({
apiKey: process.env.DEEPSEEK_API_KEY, // Default value.
model: "",
});

const res = await model.invoke([
{
role: "user",
content: message,
},
]);
`

Development

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

$3

`bash
pnpm install
`

$3

`bash
pnpm build
`

Or from the repo root:

`bash
pnpm build --filter @langchain/deepseek
`

$3

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:

`bash
$ pnpm test
$ pnpm test:int
`

$3

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

`bash
pnpm lint && pnpm format
`

$3

If you add a new file to be exported, either import & re-export from src/index.ts, or add it to the exports field in the package.json file and run pnpm build` to generate the new entrypoint.