Robin Wieruch • 1/21/2025

LangChain: Streaming in JavaScript with React.js & Next.js

This technical guide demonstrates how to build a chatbot using LangChain in JavaScript, focusing on streaming responses from a Next.js backend to a React.js frontend. It covers setting up the API route for server-sent events, handling the stream on the frontend with TextDecoderStream, and updating the UI in real-time as messages are received from the OpenAI API.

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#JavaScript #nextjs #streaming