1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
tests/cases/compiler/overloadresolutionWithConstraintCheckingDeferred.ts(14,5): error TS2322: Type 'string' is not assignable to type 'number'.
tests/cases/compiler/overloadresolutionWithConstraintCheckingDeferred.ts(14,37): error TS2345: Argument of type 'D' is not assignable to parameter of type 'A'.
Property 'x' is missing in type 'D'.
tests/cases/compiler/overloadresolutionWithConstraintCheckingDeferred.ts(16,5): error TS2322: Type 'string' is not assignable to type 'number'.
tests/cases/compiler/overloadresolutionWithConstraintCheckingDeferred.ts(16,38): error TS2344: Type 'D' does not satisfy the constraint 'A'.
tests/cases/compiler/overloadresolutionWithConstraintCheckingDeferred.ts(18,27): error TS2345: Argument of type '(x: D) => G<D>' is not assignable to parameter of type '(x: B) => any'.
Types of parameters 'x' and 'x' are incompatible.
Type 'B' is not assignable to type 'D'.
Property 'q' is missing in type 'B'.
tests/cases/compiler/overloadresolutionWithConstraintCheckingDeferred.ts(19,14): error TS2344: Type 'D' does not satisfy the constraint 'A'.
==== tests/cases/compiler/overloadresolutionWithConstraintCheckingDeferred.ts (6 errors) ====
interface A { x }
interface B { x; y }
interface C { z }
interface D { q }
class G<T extends A> {
constructor(x: T) { }
}
declare function foo(arg: (x: D) => number): string;
declare function foo(arg: (x: C) => any): string;
declare function foo(arg: (x: B) => any): number;
var result: number = foo(x => new G(x)); // x has type D, new G(x) fails, so first overload is picked.
~~~~~~
!!! error TS2322: Type 'string' is not assignable to type 'number'.
~
!!! error TS2345: Argument of type 'D' is not assignable to parameter of type 'A'.
!!! error TS2345: Property 'x' is missing in type 'D'.
var result2: number = foo(x => new G<typeof x>(x)); // x has type D, new G(x) fails, so first overload is picked.
~~~~~~~
!!! error TS2322: Type 'string' is not assignable to type 'number'.
~~~~~~~~
!!! error TS2344: Type 'D' does not satisfy the constraint 'A'.
var result3: string = foo(x => { // x has type D
~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2345: Argument of type '(x: D) => G<D>' is not assignable to parameter of type '(x: B) => any'.
!!! error TS2345: Types of parameters 'x' and 'x' are incompatible.
!!! error TS2345: Type 'B' is not assignable to type 'D'.
!!! error TS2345: Property 'q' is missing in type 'B'.
var y: G<typeof x>; // error that D does not satisfy constraint, y is of type G<D>, entire call to foo is an error
~~~~~~~~
!!! error TS2344: Type 'D' does not satisfy the constraint 'A'.
return y;
});
|
