62 lines
1.3 KiB
Plaintext
62 lines
1.3 KiB
Plaintext
=== tests/cases/conformance/types/typeRelationships/recursiveTypes/nominalSubtypeCheckOfTypeParameter.ts ===
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interface Tuple<T, S> {
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>Tuple : Tuple<T, S>
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>T : T
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>S : S
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first: T
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>first : T
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>T : T
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second: S
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>second : S
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>S : S
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}
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interface Sequence<T> {
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>Sequence : Sequence<T>
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>T : T
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hasNext(): boolean
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>hasNext : () => boolean
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pop(): T
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>pop : () => T
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>T : T
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zip<S>(seq: Sequence<S>): Sequence<Tuple<T, S>>
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>zip : <S>(seq: Sequence<S>) => Sequence<Tuple<T, S>>
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>S : S
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>seq : Sequence<S>
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>Sequence : Sequence<T>
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>S : S
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>Sequence : Sequence<T>
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>Tuple : Tuple<T, S>
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>T : T
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>S : S
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}
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// error, despite the fact that the code explicitly says List<T> extends Sequence<T>, the current rules for infinitely expanding type references
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// perform nominal subtyping checks that allow variance for type arguments, but not nominal subtyping for the generic type itself
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interface List<T> extends Sequence<T> {
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>List : List<T>
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>T : T
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>Sequence : Sequence<T>
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>T : T
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getLength(): number
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>getLength : () => number
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zip<S>(seq: Sequence<S>): List<Tuple<T, S>>
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>zip : <S>(seq: Sequence<S>) => List<Tuple<T, S>>
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>S : S
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>seq : Sequence<S>
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>Sequence : Sequence<T>
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>S : S
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>List : List<T>
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>Tuple : Tuple<T, S>
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>T : T
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>S : S
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}
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