Properly propagate silentNeverType in unions
#60866
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Andarist
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Dec 28, 2024
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| declare function inner<T1, t2>(t1: T1, t2: t2): T1 | t2; | ||
| declare function outer<T1, T2>(m: T1 | T2): [T1, T2]; | ||
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| const outerResult = outer( | ||
| inner({ a: 12 }, { foo() { return true } }) | ||
| ); |
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this test case is utterly non-sensical but it shows a behavior/consistency improvement introduced by this patch
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When investigating some other issue and debugging it I noticed that
silentNeverType | silentNeverTypewas reduced to a regularnever. I think this is a mistake and this PR basically applies the same fix as the one done for intersections here: #45073