[How to: install LangChain packages](https://js.langchain.com/docs/how_to/installation/): LLM should read this page when (wanting to install LangChain in a JavaScript/TypeScript project, troubleshooting version conflicts, or determining compatible environments) (This page covers LangChain installation instructions for various environments (Node.js, Cloudflare, Vercel/Next.js, Deno, Browser), explains how to install core and integration packages, provides solutions for dependency conflicts with @langchain/core, and offers guidance for different module systems (ESM, CommonJS))

