Add WPT tests for Error Stack Accessor proposal web platform integration#58397
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ljharb wants to merge 1 commit intoweb-platform-tests:masterfrom
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Add WPT tests for Error Stack Accessor proposal web platform integration#58397ljharb wants to merge 1 commit intoweb-platform-tests:masterfrom
ljharb wants to merge 1 commit intoweb-platform-tests:masterfrom
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Add tests for DOMException .stack behavior per the TC39 Error Stack Accessor proposal (https://tc39.es/proposal-error-stack-accessor/) and the WebIDL [[ErrorData]] integration (whatwg/webidl#1421): - DOMException instances get .stack as a string via Error.prototype.stack accessor - Error.prototype.stack property descriptor has correct accessor attributes - Error.prototype.stack getter works on DOMException instances - Error.prototype.stack setter (SetterThatIgnoresPrototypeProperties) behavior - DOMException.prototype does not have an own stack property Add tests for structured clone serialization/deserialization of [[Stack]]: - structuredClone() preserves .stack on Error and all NativeError subtypes - structuredClone() preserves .stack on DOMException (constructed and thrown) - Cloned .stack is accessed via the accessor, not as an own property See tc39/proposal-error-stack-accessor#9 and tc39/proposal-error-stack-accessor#8
This was referenced Mar 10, 2026
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Add tests for DOMException .stack behavior per the TC39 Error Stack Accessor proposal (https://tc39.es/proposal-error-stack-accessor/) and the WebIDL [[ErrorData]] integration (whatwg/webidl#1421):
Add tests for structured clone serialization/deserialization of [[Stack]]:
See tc39/proposal-error-stack-accessor#9 and tc39/proposal-error-stack-accessor#8