148 lines
2.9 KiB
Plaintext
148 lines
2.9 KiB
Plaintext
=== tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithObjectTypeArgsAndConstraints2.ts ===
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// Generic call with constraints infering type parameter from object member properties
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// No errors expected
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class Base {
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>Base : Base
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x: string;
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>x : string
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}
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class Derived extends Base {
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>Derived : Derived
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>Base : Base
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y: string;
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>y : string
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}
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function f<T extends Base>(x: { foo: T; bar: T }) {
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>f : <T extends Base>(x: { foo: T; bar: T; }) => T
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>T : T
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>Base : Base
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>x : { foo: T; bar: T; }
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>foo : T
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>T : T
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>bar : 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 r = f({ foo: new Base(), bar: new Derived() });
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>r : Base
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>f({ foo: new Base(), bar: new Derived() }) : Base
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>f : <T extends Base>(x: { foo: T; bar: T; }) => T
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>{ foo: new Base(), bar: new Derived() } : { foo: Base; bar: Derived; }
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>foo : Base
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>new Base() : Base
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>Base : typeof Base
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>bar : Derived
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>new Derived() : Derived
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>Derived : typeof Derived
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var r2 = f({ foo: new Derived(), bar: new Derived() });
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>r2 : Derived
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>f({ foo: new Derived(), bar: new Derived() }) : Derived
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>f : <T extends Base>(x: { foo: T; bar: T; }) => T
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>{ foo: new Derived(), bar: new Derived() } : { foo: Derived; bar: Derived; }
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>foo : Derived
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>new Derived() : Derived
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>Derived : typeof Derived
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>bar : Derived
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>new Derived() : Derived
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>Derived : typeof Derived
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interface I<T> {
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>I : I<T>
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>T : T
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a: T;
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>a : T
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>T : T
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}
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function f2<T extends Base>(x: I<T>) {
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>f2 : <T extends Base>(x: I<T>) => T
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>T : T
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>Base : Base
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>x : I<T>
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>I : I<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 i: I<Derived>;
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>i : I<Derived>
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>I : I<T>
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>Derived : Derived
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var r3 = f2(i);
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>r3 : Derived
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>f2(i) : Derived
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>f2 : <T extends Base>(x: I<T>) => T
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>i : I<Derived>
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function f3<T extends Base>(x: T, y: (a: T) => T) {
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>f3 : <T extends Base>(x: T, y: (a: T) => T) => T
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>T : T
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>Base : Base
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>x : T
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>T : T
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>y : (a: T) => T
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>a : T
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>T : T
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>T : T
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return y(null);
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>y(null) : T
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>y : (a: T) => T
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>null : null
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}
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var r4 = f3(new Base(), x => x);
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>r4 : Base
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>f3(new Base(), x => x) : Base
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>f3 : <T extends Base>(x: T, y: (a: T) => T) => T
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>new Base() : Base
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>Base : typeof Base
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>x => x : (x: Base) => Base
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>x : Base
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>x : Base
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var r5 = f3(new Derived(), x => x);
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>r5 : Derived
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>f3(new Derived(), x => x) : Derived
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>f3 : <T extends Base>(x: T, y: (a: T) => T) => T
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>new Derived() : Derived
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>Derived : typeof Derived
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>x => x : (x: Derived) => Derived
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>x : Derived
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>x : Derived
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var r6 = f3(null, null); // any
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>r6 : any
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>f3(null, null) : any
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>f3 : <T extends Base>(x: T, y: (a: T) => T) => T
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>null : null
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>null : null
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var r7 = f3(null, x => x); // any
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>r7 : any
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>f3(null, x => x) : any
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>f3 : <T extends Base>(x: T, y: (a: T) => T) => T
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>null : null
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>x => x : (x: any) => any
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>x : any
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>x : any
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