118 lines
2.9 KiB
Plaintext
118 lines
2.9 KiB
Plaintext
=== tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithNonSymmetricSubtypes.ts ===
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// generic type argument inference where inference leads to two candidates that are both supertypes of all candidates
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// we choose the first candidate so the result is dependent on the order of the arguments provided
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function foo<T>(x: T, y: T) {
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>foo : <T>(x: T, y: T) => T
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>T : T
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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 r: T;
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>r : T
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>T : T
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return r;
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>r : T
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}
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var a: { x: number; y?: number; };
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>a : { x: number; y?: number; }
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>x : number
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>y : number
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var b: { x: number; z?: number; };
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>b : { x: number; z?: number; }
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>x : number
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>z : number
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var r = foo(a, b); // { x: number; y?: number; };
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>r : { x: number; y?: number; }
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>foo(a, b) : { x: number; y?: number; }
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>foo : <T>(x: T, y: T) => T
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>a : { x: number; y?: number; }
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>b : { x: number; z?: number; }
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var r2 = foo(b, a); // { x: number; z?: number; };
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>r2 : { x: number; z?: number; }
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>foo(b, a) : { x: number; z?: number; }
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>foo : <T>(x: T, y: T) => T
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>b : { x: number; z?: number; }
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>a : { x: number; y?: number; }
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var x: { x: number; };
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>x : { x: number; }
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>x : number
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var y: { x?: number; };
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>y : { x?: number; }
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>x : number
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var r3 = foo(a, x); // { x: number; y?: number; };
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>r3 : { x: number; y?: number; }
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>foo(a, x) : { x: number; y?: number; }
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>foo : <T>(x: T, y: T) => T
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>a : { x: number; y?: number; }
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>x : { x: number; }
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var r4 = foo(x, a); // { x: number; };
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>r4 : { x: number; }
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>foo(x, a) : { x: number; }
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>foo : <T>(x: T, y: T) => T
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>x : { x: number; }
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>a : { x: number; y?: number; }
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var r5 = foo(a, y); // { x?: number; };
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>r5 : { x?: number; }
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>foo(a, y) : { x?: number; }
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>foo : <T>(x: T, y: T) => T
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>a : { x: number; y?: number; }
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>y : { x?: number; }
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var r5 = foo(y, a); // { x?: number; };
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>r5 : { x?: number; }
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>foo(y, a) : { x?: number; }
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>foo : <T>(x: T, y: T) => T
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>y : { x?: number; }
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>a : { x: number; y?: number; }
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var r6 = foo(x, y); // { x?: number; };
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>r6 : { x?: number; }
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>foo(x, y) : { x?: number; }
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>foo : <T>(x: T, y: T) => T
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>x : { x: number; }
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>y : { x?: number; }
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var r6 = foo(y, x); // { x?: number; };
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>r6 : { x?: number; }
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>foo(y, x) : { x?: number; }
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>foo : <T>(x: T, y: T) => T
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>y : { x?: number; }
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>x : { x: number; }
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var s1: (x: Object) => string;
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>s1 : (x: Object) => string
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>x : Object
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>Object : Object
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var s2: (x: string) => string;
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>s2 : (x: string) => string
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>x : string
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var r7 = foo(s1, s2); // (x: Object) => string;
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>r7 : (x: Object) => string
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>foo(s1, s2) : (x: Object) => string
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>foo : <T>(x: T, y: T) => T
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>s1 : (x: Object) => string
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>s2 : (x: string) => string
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var r8 = foo(s2, s1); // (x: string) => string;
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>r8 : (x: string) => string
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>foo(s2, s1) : (x: string) => string
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>foo : <T>(x: T, y: T) => T
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>s2 : (x: string) => string
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>s1 : (x: Object) => string
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