Claude Code12 min read
Fix 'ReadableStream is not defined' with the Claude SDK
Getting 'readablestream is not defined' from the Claude SDK in Node? Learn the root cause and the ordered fixes: upgrade Node, polyfill, or configure your runtime.
Getting 'readablestream is not defined' from the Claude SDK in Node? Learn the root cause and the ordered fixes: upgrade Node, polyfill, or configure your runtime.