fix(virtual-core): prevent measurement jitter when scale is applied#986
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piecyk merged 5 commits intoTanStack:mainfrom May 5, 2025
Merged
fix(virtual-core): prevent measurement jitter when scale is applied#986piecyk merged 5 commits intoTanStack:mainfrom
piecyk merged 5 commits intoTanStack:mainfrom
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🦋 Changeset detectedLatest commit: 4cb29f8 The changes in this PR will be included in the next version bump. This PR includes changesets to release 7 packages
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@usings Could you also update observeElementRect to use offsetWidth / offsetHeight as a fallback instead of getBoundingClientRect()? |
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Sure. I’ll make that change shortly. |
piecyk
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May 5, 2025
…ional dimensions
piecyk
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May 5, 2025
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Thanks @usings |
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May 12, 2025
Ref: TanStack/virtual#641 (comment) Ref: TanStack/virtual#986 Changelog: detail
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Problem
When using the
measureElementfunction in combination with scaled elements (via CSStransform: scale(...)), thegetBoundingClientRect()method returns fractional values that may cause layout jitter or re-renders due to rounding inconsistencies.Solution
Fallback measurement now uses
offsetWidth/offsetHeightinstead ofgetBoundingClientRect()whenResizeObserverEntry.borderBoxSizeis not available. This avoids jitter caused by scaled bounding boxes.Why
offset*?offsetWidth/offsetHeightgive integer values.transform: scale(...), unlikegetBoundingClientRect().Impact
Improves measurement stability in virtualized lists using CSS transforms. No breaking changes.