Undefined tool output serialized as null
ai@7.0.0-beta.181
1 fixThis release1 fixBug fixesAI-tallied from the release notes
Patch Changes
- 6a2caf9: Serialize
undefinedtool output tonullin UI message chunks
Fetched June 18, 2026
From other products
- @langchain/openai@1.4.7May 21, 2026Custom tool calls now stream via Responses API; response IDs preserved
Fixed streaming of custom tool calls through Responses API chunks, and preserved top-level Responses API IDs on AI messages.
LangChain · LangChain.js - @posthog/ai@7.19.0May 21, 2026Error serialization captures cause, message, stack
Error serialization now captures cause, message, and stack properties.
PostHog · PostHog JS
