fix(adk-middleware): filter empty text events to prevent frontend crash #745
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AG-UI's TextMessageContentEvent validates that delta is non-empty. When ADK yielded events with empty string content, the validation would fail and crash the frontend. Added early return in _translate_text_content when combined_text is empty, preventing the creation of TextMessageContentEvent with empty delta. Added comprehensive tests for empty text event handling: - test_empty_text_event_does_not_crash - test_whitespace_only_text_event_does_not_crash - test_multiple_empty_parts_filtered - test_mixed_empty_and_valid_parts_filtering - test_empty_combined_text_early_return
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@xomanova is attempting to deploy a commit to the CopilotKit Team on Vercel. A member of the Team first needs to authorize it. |
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@maxkorp @tylerslaton It looks like there's still an issue with the Github secrets and running the e2e tests against a PR submitted from an outside fork; there's no other reason for all the tests to be failing. |
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Nov 29, 2025
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@xomanova I don't know whether you have the ability to merge PRs in this repo or not, so I went ahead and merged after running the tests in a separate PR.
This was referenced Nov 29, 2025
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Fix and tests for #735 (comment)
AG-UI's TextMessageContentEvent validates that delta is non-empty. When ADK yielded events with empty string content, the validation would fail and crash the frontend.
Added early return in _translate_text_content when combined_text is empty, preventing the creation of TextMessageContentEvent with empty delta.
Added comprehensive tests for empty text event handling: