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structuredClone loses specialized Error prototypes #58214
Description
Description
The React Native structuredClone polyfill validates an Error's standard serialized name but always constructs a base Error, then overwrites only .name. A cloned EvalError, for example, reports name === 'EvalError' while failing instanceof EvalError. The same affects RangeError, ReferenceError, SyntaxError, TypeError, and URIError.
Expected behavior
Valid standard Error names should be cloned with their matching built-in constructor/prototype; invalid names should fall back to base Error. Native structuredClone follows this behavior.
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 it has been stalled for 7 days with no activity.
react-native-bot commentedon Oct 1, 2026
This issue was closed because the author hasn't provided the requested feedback after 7 days.