Announcing LangChainJS Support for Multiple JS Environments

TLDR: We're announcing support for running LangChain.js in browsers, Cloudflare Workers, Vercel/Next.js, Deno, Supabase Edge Functions, alongside existing support for Node.js ESM and CJS. See install/upgrade docs and breaking changes list.

Context

Originally we designed LangChain.js to run in Node.js, which

breaking browsers cloudflare deno edge environments esm install langchain list multiple next next.js node node.js running support upgrade vercel workers