React 19 upgrade#4428

Merged

lbwexler merged 31 commits into

react-19-upgrade

Jul 15, 2026

Commits on Jun 5, 2026

Add React 19 internal-API migration plan
lbwexler
committed

Commits on Jun 6, 2026

Reframe plan as React 18-safe React 19 prep (findDOMNode only)
lbwexler
committed

Commits on Jun 7, 2026

Add Popover (PopoverNext) and floating-ui phases as React 18-safe prep
lbwexler
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Phase 1: remove findDOMNode from HoistInputModel (React 19 prep)
lbwexler
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Move React 19 findDOMNode changelog entry to 87.0.0-SNAPSHOT
lbwexler
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Phase 2: migrate Popover kit wrapper to Blueprint PopoverNext (React 19 prep)
lbwexler
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Phase 3: migrate mobile Popover from react-popper to Floating UI (React 19 prep)
lbwexler
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Update menuPositionToPlacement doc comment for Floating UI
lbwexler
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Apply forward-compatible React 19 type-prep fixes
lbwexler
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Bump to React 19 (deps + peer range)
lbwexler
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Commits on Jun 14, 2026

Merge remote-tracking branch 'origin/develop' into react-19-upgrade
lbwexler
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Commits on Jun 16, 2026

Checkpoint
lbwexler
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Commits on Jun 17, 2026

Merge remote-tracking branch 'origin/develop' into react-19-upgrade
lbwexler
committed

Commits on Jun 19, 2026

Commits on Jun 23, 2026

Merge remote-tracking branch 'origin/develop' into react-19-upgrade
lbwexler
committed

Commits on Jul 2, 2026