49 lines
1.3 KiB
Plaintext
49 lines
1.3 KiB
Plaintext
=== tests/cases/compiler/contextualSignatureInstatiationCovariance.ts ===
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interface Animal { x }
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>Animal : Animal
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>x : any
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interface TallThing { x2 }
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>TallThing : TallThing
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>x2 : any
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interface Giraffe extends Animal, TallThing { y }
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>Giraffe : Giraffe
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>Animal : Animal
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>TallThing : TallThing
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>y : any
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var f2: <T extends Giraffe>(x: T, y: T) => void;
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>f2 : <T extends Giraffe>(x: T, y: T) => void
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>T : T
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>Giraffe : Giraffe
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>x : T
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>T : T
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>y : T
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>T : T
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var g2: (a: Animal, t: TallThing) => void;
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>g2 : (a: Animal, t: TallThing) => void
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>a : Animal
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>Animal : Animal
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>t : TallThing
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>TallThing : TallThing
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g2 = f2; // While neither Animal nor TallThing satisfy the constraint, T is at worst a Giraffe and compatible with both via covariance.
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>g2 = f2 : <T extends Giraffe>(x: T, y: T) => void
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>g2 : (a: Animal, t: TallThing) => void
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>f2 : <T extends Giraffe>(x: T, y: T) => void
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var h2: (a1: Animal, a2: Animal) => void;
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>h2 : (a1: Animal, a2: Animal) => void
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>a1 : Animal
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>Animal : Animal
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>a2 : Animal
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>Animal : Animal
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h2 = f2; // Animal does not satisfy the constraint, but T is at worst a Giraffe and compatible with Animal via covariance.
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>h2 = f2 : <T extends Giraffe>(x: T, y: T) => void
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>h2 : (a1: Animal, a2: Animal) => void
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>f2 : <T extends Giraffe>(x: T, y: T) => void
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