fix(solid/tanstackrouter): Ensure web vitals are sent on pageload #18542
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…id tanstack router
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Pull request overview
This PR fixes an issue where web vitals were not being sent on pageload in the Solid TanStack Router integration. The problem was caused by a conditional check that would short-circuit during initial pageload, preventing the pageload transaction from completing and sending web vitals measurements.
- Updated the navigation span filtering logic to explicitly check for absence of
fromLocationbefore comparing location states - Added comprehensive test coverage to verify web vitals are sent on pageload
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| packages/solid/src/tanstackrouter.ts | Fixed the condition in onBeforeNavigate callback to properly detect initial pageload by checking for absence of fromLocation before comparing location states |
| dev-packages/e2e-tests/test-applications/solid-tanstack-router/tests/routing-instrumentation.test.ts | Added test case to verify pageload transactions include web vitals measurements (ttfb, lcp, fp, fcp) |
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andreiborza
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Dec 17, 2025
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Thanks for taking care of this 🙏
logaretm
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awad/js-1323-solid-core-web-vitals-arent-reported-with-tanstack-router
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Adjusted the condition for reporting web vitals previously it would short circuit and prevent them from being reported, I included a test.
similar to what we did in #18463
closes #18540