Next.js

If you're looking to use LangChain in a Next.js project, you can check out the official Next.js starter template.

It shows off streaming and customization, and contains several use-cases around chat, structured output, agents, and retrieval that demonstrate how to use different modules in LangChain together.

You can check it out here:

• https://github.com/langchain-ai/langchain-nextjs-template