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fix(check): clip overlap geometry to visible fragments - #3698
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Overflow-clipped text rects for overlap detection. Clean extraction of unionRects and clipsOverflowValue helpers with per-axis clipping. Tests cover all overflow modes. — Miga
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What
content_overlapno longer reports text that an overflow ancestor fully hides. Partially clipped text is measured by its painted area, so genuine visible collisions still cross the overlap threshold.Why
DOM Range rectangles remain geometrically present outside an overflow clip. Comparing those raw rectangles produced false-positive overlap warnings for translated or otherwise clipped text.
How
Text fragments are intersected with each overflow ancestor in viewport coordinates before overlap analysis. Clipping is axis-aware for
hidden,clip,auto, andscroll, whiledata-layout-allow-overlapremains a local opt-out.Test plan
Unit tests added/updated
Manual testing performed
Documentation updated (not applicable)
bunx vitest run src/commands/layout-audit.browser.test.ts --reporter=dot(89 tests passed)node --check packages/cli/src/commands/layout-audit.browser.jsbunx oxlint packages/cli/src/commands/layout-audit.browser.js packages/cli/src/commands/layout-audit.browser.test.tsbunx oxfmt --check packages/cli/src/commands/layout-audit.browser.js packages/cli/src/commands/layout-audit.browser.test.tsgit diff --checkThe package-wide typecheck is unavailable in this reused checkout because optional AWS, GCP, and producer dependencies are absent and existing cross-package type drift is present. It did not report errors in the changed browser audit or regression test.