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Add tests for DOMException serialization #110

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Merged
sindresorhus merged 1 commit into from
Sep 8, 2025
+18 −0
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Add tests for DOMException serialization #110

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18 changes: 18 additions & 0 deletions test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -619,4 +619,22 @@ if ('DOMException' in globalThis) {
const serialized = serializeError(new DOMException('x'));
t.is(serialized.message, 'x');
});

test('should deep clone DOMException when it is in the cause property', t => {
const domException = new DOMException('My domException', 'NotFoundError');
const error = new Error('My error message', {
cause: domException,
});

const serialized = serializeError(error);

t.is(serialized.message, 'My error message');
t.is(serialized.cause.message, 'My domException');
t.is(serialized.cause.name, 'NotFoundError');
t.is(serialized.cause.code, 8);
// Should be a deep clone, not the same reference
t.not(serialized.cause, domException);
t.false(serialized.cause instanceof DOMException);
t.false(serialized.cause instanceof Error);
});
}