Hi, regarding streams interoperability I've documented how to handle file streams a while ago, after experimenting with Next.js old system (Node.js based) and new system (web based) : https://www.ericburel.tech/blog/nextjs-stream-files#2024-upd.... It sums up as "const stream = fileHandle.readableWebStream()" to produce a web stream using Node.js fs, rather than creating a Node.js stream.