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
71
72
73
74
75
76
77
|
=== tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithNumericIndexer.ts ===
// Derived type indexer must be subtype of base type indexer
interface Base { foo: string; }
>foo : string
interface Derived extends Base { bar: string; }
>bar : string
interface Derived2 extends Derived { baz: string; }
>baz : string
class A {
>A : A
[x: number]: Base;
>x : number
}
class B extends A {
>B : B
>A : A
[x: number]: Derived; // ok
>x : number
}
class B2 extends A {
>B2 : B2
>A : A
[x: number]: Derived2; // ok
>x : number
}
module Generics {
>Generics : typeof Generics
class A<T extends Base> {
>A : A<T>
[x: number]: T;
>x : number
}
class B extends A<Base> {
>B : B
>A : A<Base>
[x: number]: Derived; // ok
>x : number
}
class B2 extends A<Base> {
>B2 : B2
>A : A<Base>
[x: number]: Derived2; // ok
>x : number
}
class B3<T extends Base> extends A<T> {
>B3 : B3<T>
>A : A<T>
[x: number]: Derived; // error, BUG?
>x : number
}
class B4<T extends Base> extends A<T> {
>B4 : B4<T>
>A : A<T>
[x: number]: Derived2; // error, BUG?
>x : number
}
}
|
