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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithConstructSignaturesWithOptionalParameters.ts(16,5): error TS2322: Type 'new (x: number) => number' is not assignable to type 'new () => number'.
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithConstructSignaturesWithOptionalParameters.ts(17,5): error TS2322: Type 'new (x: number, y?: number) => number' is not assignable to type 'new () => number'.
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithConstructSignaturesWithOptionalParameters.ts(19,5): error TS2322: Type 'new (x: number, y: number) => number' is not assignable to type 'new () => number'.
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithConstructSignaturesWithOptionalParameters.ts(27,5): error TS2322: Type 'new (x: number, y: number) => number' is not assignable to type 'new (x?: number) => number'.
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithConstructSignaturesWithOptionalParameters.ts(35,5): error TS2322: Type 'new (x: number, y: number) => number' is not assignable to type 'new (x: number) => number'.
==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithConstructSignaturesWithOptionalParameters.ts (5 errors) ====
// call signatures in derived types must have the same or fewer optional parameters as the base type
interface Base {
a: new () => number;
a2: new (x?: number) => number;
a3: new (x: number) => number;
a4: new (x: number, y?: number) => number;
a5: new (x?: number, y?: number) => number;
a6: new (x: number, y: number) => number;
}
var b: Base;
var a: new () => number;
a = b.a; // ok
a = b.a2; // ok
a = b.a3; // error
~
!!! error TS2322: Type 'new (x: number) => number' is not assignable to type 'new () => number'.
a = b.a4; // error
~
!!! error TS2322: Type 'new (x: number, y?: number) => number' is not assignable to type 'new () => number'.
a = b.a5; // ok
a = b.a6; // error
~
!!! error TS2322: Type 'new (x: number, y: number) => number' is not assignable to type 'new () => number'.
var a2: new (x?: number) => number;
a2 = b.a; // ok
a2 = b.a2; // ok
a2 = b.a3; // ok
a2 = b.a4; // ok
a2 = b.a5; // ok
a2 = b.a6; // error
~~
!!! error TS2322: Type 'new (x: number, y: number) => number' is not assignable to type 'new (x?: number) => number'.
var a3: new (x: number) => number;
a3 = b.a; // ok
a3 = b.a2; // ok
a3 = b.a3; // ok
a3 = b.a4; // ok
a3 = b.a5; // ok
a3 = b.a6; // error
~~
!!! error TS2322: Type 'new (x: number, y: number) => number' is not assignable to type 'new (x: number) => number'.
var a4: new (x: number, y?: number) => number;
a4 = b.a; // ok
a4 = b.a2; // ok
a4 = b.a3; // ok
a4 = b.a4; // ok
a4 = b.a5; // ok
a4 = b.a6; // ok
var a5: new (x?: number, y?: number) => number;
a5 = b.a; // ok
a5 = b.a2; // ok
a5 = b.a3; // ok
a5 = b.a4; // ok
a5 = b.a5; // ok
a5 = b.a6; // ok
|
