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structuredClone accepts boxed Symbols as empty objects #58212
Description
Description
The React Native structuredClone polyfill correctly rejects primitive Symbols but treats boxed Symbols as arbitrary objects. structuredClone(Object(Symbol())) therefore returns {} instead of throwing, even though boxed Symbols are also not structured-cloneable.
Expected behavior
Boxed Symbols should throw DataCloneError, matching native structuredClone. The error path should not string-coerce the wrapper because Hermes throws a separate TypeError for that coercion.
React Native Version
0.87.1 and current main
Affected Platforms
JavaScript runtime - All
Activity
react-native-bot commentedon Aug 30, 2026
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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.
react-native-bot commentedon Oct 1, 2026
This issue was closed because the author hasn't provided the requested feedback after 7 days.