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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
=== tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithNonSymmetricSubtypes.ts ===
// generic type argument inference where inference leads to two candidates that are both supertypes of all candidates
// we choose the first candidate so the result is dependent on the order of the arguments provided
function foo<T>(x: T, y: T) {
>foo : Symbol(foo, Decl(genericCallWithNonSymmetricSubtypes.ts, 0, 0))
>T : Symbol(T, Decl(genericCallWithNonSymmetricSubtypes.ts, 3, 13))
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 3, 16))
>T : Symbol(T, Decl(genericCallWithNonSymmetricSubtypes.ts, 3, 13))
>y : Symbol(y, Decl(genericCallWithNonSymmetricSubtypes.ts, 3, 21))
>T : Symbol(T, Decl(genericCallWithNonSymmetricSubtypes.ts, 3, 13))
var r: T;
>r : Symbol(r, Decl(genericCallWithNonSymmetricSubtypes.ts, 4, 7))
>T : Symbol(T, Decl(genericCallWithNonSymmetricSubtypes.ts, 3, 13))
return r;
>r : Symbol(r, Decl(genericCallWithNonSymmetricSubtypes.ts, 4, 7))
}
var a: { x: number; y?: number; };
>a : Symbol(a, Decl(genericCallWithNonSymmetricSubtypes.ts, 8, 3))
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 8, 8))
>y : Symbol(y, Decl(genericCallWithNonSymmetricSubtypes.ts, 8, 19))
var b: { x: number; z?: number; };
>b : Symbol(b, Decl(genericCallWithNonSymmetricSubtypes.ts, 9, 3))
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 9, 8))
>z : Symbol(z, Decl(genericCallWithNonSymmetricSubtypes.ts, 9, 19))
var r = foo(a, b); // { x: number; y?: number; };
>r : Symbol(r, Decl(genericCallWithNonSymmetricSubtypes.ts, 11, 3))
>foo : Symbol(foo, Decl(genericCallWithNonSymmetricSubtypes.ts, 0, 0))
>a : Symbol(a, Decl(genericCallWithNonSymmetricSubtypes.ts, 8, 3))
>b : Symbol(b, Decl(genericCallWithNonSymmetricSubtypes.ts, 9, 3))
var r2 = foo(b, a); // { x: number; z?: number; };
>r2 : Symbol(r2, Decl(genericCallWithNonSymmetricSubtypes.ts, 12, 3))
>foo : Symbol(foo, Decl(genericCallWithNonSymmetricSubtypes.ts, 0, 0))
>b : Symbol(b, Decl(genericCallWithNonSymmetricSubtypes.ts, 9, 3))
>a : Symbol(a, Decl(genericCallWithNonSymmetricSubtypes.ts, 8, 3))
var x: { x: number; };
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 14, 3))
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 14, 8))
var y: { x?: number; };
>y : Symbol(y, Decl(genericCallWithNonSymmetricSubtypes.ts, 15, 3))
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 15, 8))
var r3 = foo(a, x); // { x: number; y?: number; };
>r3 : Symbol(r3, Decl(genericCallWithNonSymmetricSubtypes.ts, 17, 3))
>foo : Symbol(foo, Decl(genericCallWithNonSymmetricSubtypes.ts, 0, 0))
>a : Symbol(a, Decl(genericCallWithNonSymmetricSubtypes.ts, 8, 3))
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 14, 3))
var r4 = foo(x, a); // { x: number; };
>r4 : Symbol(r4, Decl(genericCallWithNonSymmetricSubtypes.ts, 18, 3))
>foo : Symbol(foo, Decl(genericCallWithNonSymmetricSubtypes.ts, 0, 0))
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 14, 3))
>a : Symbol(a, Decl(genericCallWithNonSymmetricSubtypes.ts, 8, 3))
var r5 = foo(a, y); // { x?: number; };
>r5 : Symbol(r5, Decl(genericCallWithNonSymmetricSubtypes.ts, 20, 3), Decl(genericCallWithNonSymmetricSubtypes.ts, 21, 3))
>foo : Symbol(foo, Decl(genericCallWithNonSymmetricSubtypes.ts, 0, 0))
>a : Symbol(a, Decl(genericCallWithNonSymmetricSubtypes.ts, 8, 3))
>y : Symbol(y, Decl(genericCallWithNonSymmetricSubtypes.ts, 15, 3))
var r5 = foo(y, a); // { x?: number; };
>r5 : Symbol(r5, Decl(genericCallWithNonSymmetricSubtypes.ts, 20, 3), Decl(genericCallWithNonSymmetricSubtypes.ts, 21, 3))
>foo : Symbol(foo, Decl(genericCallWithNonSymmetricSubtypes.ts, 0, 0))
>y : Symbol(y, Decl(genericCallWithNonSymmetricSubtypes.ts, 15, 3))
>a : Symbol(a, Decl(genericCallWithNonSymmetricSubtypes.ts, 8, 3))
var r6 = foo(x, y); // { x?: number; };
>r6 : Symbol(r6, Decl(genericCallWithNonSymmetricSubtypes.ts, 23, 3), Decl(genericCallWithNonSymmetricSubtypes.ts, 24, 3))
>foo : Symbol(foo, Decl(genericCallWithNonSymmetricSubtypes.ts, 0, 0))
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 14, 3))
>y : Symbol(y, Decl(genericCallWithNonSymmetricSubtypes.ts, 15, 3))
var r6 = foo(y, x); // { x?: number; };
>r6 : Symbol(r6, Decl(genericCallWithNonSymmetricSubtypes.ts, 23, 3), Decl(genericCallWithNonSymmetricSubtypes.ts, 24, 3))
>foo : Symbol(foo, Decl(genericCallWithNonSymmetricSubtypes.ts, 0, 0))
>y : Symbol(y, Decl(genericCallWithNonSymmetricSubtypes.ts, 15, 3))
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 14, 3))
var s1: (x: Object) => string;
>s1 : Symbol(s1, Decl(genericCallWithNonSymmetricSubtypes.ts, 26, 3))
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 26, 9))
>Object : Symbol(Object, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
var s2: (x: string) => string;
>s2 : Symbol(s2, Decl(genericCallWithNonSymmetricSubtypes.ts, 27, 3))
>x : Symbol(x, Decl(genericCallWithNonSymmetricSubtypes.ts, 27, 9))
var r7 = foo(s1, s2); // (x: Object) => string;
>r7 : Symbol(r7, Decl(genericCallWithNonSymmetricSubtypes.ts, 29, 3))
>foo : Symbol(foo, Decl(genericCallWithNonSymmetricSubtypes.ts, 0, 0))
>s1 : Symbol(s1, Decl(genericCallWithNonSymmetricSubtypes.ts, 26, 3))
>s2 : Symbol(s2, Decl(genericCallWithNonSymmetricSubtypes.ts, 27, 3))
var r8 = foo(s2, s1); // (x: string) => string;
>r8 : Symbol(r8, Decl(genericCallWithNonSymmetricSubtypes.ts, 30, 3))
>foo : Symbol(foo, Decl(genericCallWithNonSymmetricSubtypes.ts, 0, 0))
>s2 : Symbol(s2, Decl(genericCallWithNonSymmetricSubtypes.ts, 27, 3))
>s1 : Symbol(s1, Decl(genericCallWithNonSymmetricSubtypes.ts, 26, 3))
|
