Repository navigation
DOMRect normalizes NaN and negative zero to zero #58240
Description
Description
The shared numeric conversion used by DOMRectReadOnly construction and mutable DOMRect setters defaults all falsy values to 0. Valid NaN is therefore replaced with zero and -0 loses its sign.
Expected behavior
Only omitted/nullish optional values should receive the zero default. Supplied numeric values should undergo normal Number conversion while preserving NaN and signed zero.
React Native Version
0.87.1 and current main
Affected Platforms
JavaScript runtime - All
Activity
react-native-bot commentedon Aug 30, 2026
Warning
Missing reproducer: We could not detect a reproducible example in your issue report. Reproducers are mandatory and we can accept only one of those as a valid reproducer:
You can read more about about it on our website: How to report a bug.
react-native-bot commentedon Sep 24, 2026
This issue is waiting for author's feedback since 24 days. Please provide the requested feedback or this will be closed in 7 days.
OskarEichler commentedon Oct 2, 2026
Added the requested runnable RNTester Playground in #58806. Open Playground and press Run reproducers; the result for #58240 is labeled separately.
Verified using the native Hermes/Fabric Fantom runner on main
cd2de187e8878119896159371225acbb9dfa5d9c. The DOMRect NaN / negative-zero case still fails.This is a constructed example based on the source audit, not a claimed production incident. The PR includes the exact native verification driver and results.
Preserve DOMRect special number values (react#58241)