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=== tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithGenericSignatureArguments2.ts ===
// When a function expression is inferentially typed (section 4.9.3) and a type assigned to a parameter in that expression references type parameters for which inferences are being made,
// the corresponding inferred type arguments to become fixed and no further candidate inferences are made for them.
module onlyT {
>onlyT : typeof onlyT
function foo<T>(a: (x: T) => T, b: (x: T) => T) {
>foo : <T>(a: (x: T) => T, b: (x: T) => T) => (x: T) => T
>a : (x: T) => T
>x : T
>b : (x: T) => T
>x : T
var r: (x: T) => T;
>r : (x: T) => T
>x : T
return r;
>r : (x: T) => T
}
var r1: (x: {}) => {} = foo((x: number) => 1, (x: string) => '');
>r1 : (x: {}) => {}
>x : {}
>foo((x: number) => 1, (x: string) => '') : (x: number) => number
>foo : <T>(a: (x: T) => T, b: (x: T) => T) => (x: T) => T
>(x: number) => 1 : (x: number) => number
>x : number
>1 : 1
>(x: string) => '' : (x: string) => string
>x : string
>'' : ""
function other2<T extends Date>(x: T) {
>other2 : <T extends Date>(x: T) => void
>x : T
var r7 = foo((a: T) => a, (b: T) => b); // T => T
>r7 : (x: T) => T
>foo((a: T) => a, (b: T) => b) : (x: T) => T
>foo : <T>(a: (x: T) => T, b: (x: T) => T) => (x: T) => T
>(a: T) => a : (a: T) => T
>a : T
>a : T
>(b: T) => b : (b: T) => T
>b : T
>b : T
// BUG 835518
var r9 = r7(new Date()); // should be ok
>r9 : T
>r7(new Date()) : T
>r7 : (x: T) => T
>new Date() : Date
>Date : DateConstructor
var r10 = r7(1); // error
>r10 : T
>r7(1) : T
>r7 : (x: T) => T
>1 : 1
}
function foo2<T extends Date>(a: (x: T) => T, b: (x: T) => T) {
>foo2 : <T extends Date>(a: (x: T) => T, b: (x: T) => T) => (x: T) => T
>a : (x: T) => T
>x : T
>b : (x: T) => T
>x : T
var r: (x: T) => T;
>r : (x: T) => T
>x : T
return r;
>r : (x: T) => T
}
function other3<T extends RegExp>(x: T) {
>other3 : <T extends RegExp>(x: T) => void
>x : T
var r7 = foo2((a: T) => a, (b: T) => b); // error
>r7 : (x: Date) => Date
>foo2((a: T) => a, (b: T) => b) : (x: Date) => Date
>foo2 : <T extends Date>(a: (x: T) => T, b: (x: T) => T) => (x: T) => T
>(a: T) => a : (a: T) => T
>a : T
>a : T
>(b: T) => b : (b: T) => T
>b : T
>b : T
var r7b = foo2((a) => a, (b) => b); // valid, T is inferred to be Date
>r7b : (x: Date) => Date
>foo2((a) => a, (b) => b) : (x: Date) => Date
>foo2 : <T extends Date>(a: (x: T) => T, b: (x: T) => T) => (x: T) => T
>(a) => a : (a: Date) => Date
>a : Date
>a : Date
>(b) => b : (b: Date) => Date
>b : Date
>b : Date
}
enum E { A }
>E : E
>A : E.A
enum F { A }
>F : F
>A : F.A
function foo3<T>(x: T, a: (x: T) => T, b: (x: T) => T) {
>foo3 : <T>(x: T, a: (x: T) => T, b: (x: T) => T) => (x: T) => T
>x : T
>a : (x: T) => T
>x : T
>b : (x: T) => T
>x : T
var r: (x: T) => T;
>r : (x: T) => T
>x : T
return r;
>r : (x: T) => T
}
var r7 = foo3(E.A, (x) => E.A, (x) => F.A); // error
>r7 : (x: E) => E
>foo3(E.A, (x) => E.A, (x) => F.A) : (x: E) => E
>foo3 : <T>(x: T, a: (x: T) => T, b: (x: T) => T) => (x: T) => T
>E.A : E
>E : typeof E
>A : E
>(x) => E.A : (x: E) => E
>x : E
>E.A : E
>E : typeof E
>A : E
>(x) => F.A : (x: E) => F
>x : E
>F.A : F
>F : typeof F
>A : F
}
module TU {
>TU : typeof TU
function foo<T, U>(a: (x: T) => T, b: (x: U) => U) {
>foo : <T, U>(a: (x: T) => T, b: (x: U) => U) => (x: T) => T
>a : (x: T) => T
>x : T
>b : (x: U) => U
>x : U
var r: (x: T) => T;
>r : (x: T) => T
>x : T
return r;
>r : (x: T) => T
}
var r1: (x: {}) => {} = foo((x: number) => 1, (x: string) => '');
>r1 : (x: {}) => {}
>x : {}
>foo((x: number) => 1, (x: string) => '') : (x: number) => number
>foo : <T, U>(a: (x: T) => T, b: (x: U) => U) => (x: T) => T
>(x: number) => 1 : (x: number) => number
>x : number
>1 : 1
>(x: string) => '' : (x: string) => string
>x : string
>'' : ""
function other2<T extends Date>(x: T) {
>other2 : <T extends Date>(x: T) => void
>x : T
var r7 = foo((a: T) => a, (b: T) => b);
>r7 : (x: T) => T
>foo((a: T) => a, (b: T) => b) : (x: T) => T
>foo : <T, U>(a: (x: T) => T, b: (x: U) => U) => (x: T) => T
>(a: T) => a : (a: T) => T
>a : T
>a : T
>(b: T) => b : (b: T) => T
>b : T
>b : T
var r9 = r7(new Date());
>r9 : T
>r7(new Date()) : T
>r7 : (x: T) => T
>new Date() : Date
>Date : DateConstructor
var r10 = r7(1);
>r10 : T
>r7(1) : T
>r7 : (x: T) => T
>1 : 1
}
function foo2<T extends Date, U extends Date>(a: (x: T) => T, b: (x: U) => U) {
>foo2 : <T extends Date, U extends Date>(a: (x: T) => T, b: (x: U) => U) => (x: T) => T
>a : (x: T) => T
>x : T
>b : (x: U) => U
>x : U
var r: (x: T) => T;
>r : (x: T) => T
>x : T
return r;
>r : (x: T) => T
}
function other3<T extends RegExp>(x: T) {
>other3 : <T extends RegExp>(x: T) => void
>x : T
var r7 = foo2((a: T) => a, (b: T) => b);
>r7 : (x: Date) => Date
>foo2((a: T) => a, (b: T) => b) : (x: Date) => Date
>foo2 : <T extends Date, U extends Date>(a: (x: T) => T, b: (x: U) => U) => (x: T) => T
>(a: T) => a : (a: T) => T
>a : T
>a : T
>(b: T) => b : (b: T) => T
>b : T
>b : T
var r7b = foo2((a) => a, (b) => b);
>r7b : (x: Date) => Date
>foo2((a) => a, (b) => b) : (x: Date) => Date
>foo2 : <T extends Date, U extends Date>(a: (x: T) => T, b: (x: U) => U) => (x: T) => T
>(a) => a : (a: Date) => Date
>a : Date
>a : Date
>(b) => b : (b: Date) => Date
>b : Date
>b : Date
}
enum E { A }
>E : E
>A : E.A
enum F { A }
>F : F
>A : F.A
function foo3<T>(x: T, a: (x: T) => T, b: (x: U) => U) {
>foo3 : <T>(x: T, a: (x: T) => T, b: (x: U) => U) => (x: T) => T
>x : T
>a : (x: T) => T
>x : T
>b : (x: U) => U
>x : U
var r: (x: T) => T;
>r : (x: T) => T
>x : T
return r;
>r : (x: T) => T
}
var r7 = foo3(E.A, (x) => E.A, (x) => F.A);
>r7 : (x: E) => E
>foo3(E.A, (x) => E.A, (x) => F.A) : (x: E) => E
>foo3 : <T>(x: T, a: (x: T) => T, b: (x: U) => U) => (x: T) => T
>E.A : E
>E : typeof E
>A : E
>(x) => E.A : (x: E) => E
>x : E
>E.A : E
>E : typeof E
>A : E
>(x) => F.A : (x: U) => F
>x : U
>F.A : F
>F : typeof F
>A : F
}
|
