File: genericTypeAssertions4.types

package info (click to toggle)
node-typescript 5.0.4%2Bds1-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 459,140 kB
  • sloc: javascript: 1,972,754; makefile: 6; sh: 1
file content (77 lines) | stat: -rw-r--r-- 979 bytes parent folder | download | duplicates (5)
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/compiler/genericTypeAssertions4.ts ===
class A {
>A : A

    foo() { return ""; }
>foo : () => string
>"" : ""
}

class B extends A {
>B : B
>A : A

    bar() { return 1; }
>bar : () => number
>1 : 1
}

class C extends A {
>C : C
>A : A

    baz() { return 1; }
>baz : () => number
>1 : 1
}

var a: A;
>a : A

var b: B;
>b : B

var c: C;
>c : C

function foo2<T extends A>(x: T) {
>foo2 : <T extends A>(x: T) => void
>x : T

    var y = x;
>y : T
>x : T

    y = a; // error: cannot convert A to T
>y = a : A
>y : T
>a : A

    y = b; // error: cannot convert B to T
>y = b : B
>y : T
>b : B

    y = c; // error: cannot convert C to T
>y = c : C
>y : T
>c : C

    y = <T>a;
>y = <T>a : T
>y : T
><T>a : T
>a : A

    y = <T>b; // error: cannot convert B to T
>y = <T>b : T
>y : T
><T>b : T
>b : B

    y = <T>c; // error: cannot convert C to T
>y = <T>c : T
>y : T
><T>c : T
>c : C
}