langchain

5ee76fcc - langchain_groq[patch]: Invoke callback prior to yielding token (#18272)

langchain_groq[patch]: Invoke callback prior to yielding token (#18272) ## PR title langchain_groq[patch]: Invoke callback prior to yielding ## PR message **Description:**Invoke callback prior to yielding token in _stream and _astream methods for groq. Issue: https://github.com/langchain-ai/langchain/issues/16913 Dependencies: None Twitter handle: None