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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
=== tests/cases/conformance/types/union/contextualTypeWithUnionTypeIndexSignatures.ts ===
//When used as a contextual type, a union type U has those members that are present in any of
// its constituent types, with types that are unions of the respective members in the constituent types.
interface SomeType {
>SomeType : Symbol(SomeType, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 0, 0))
(a: number): number;
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 3, 5))
}
interface SomeType2 {
>SomeType2 : Symbol(SomeType2, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 4, 1))
(a: number): string;
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 6, 5))
}
interface IWithNoStringIndexSignature {
>IWithNoStringIndexSignature : Symbol(IWithNoStringIndexSignature, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 7, 1))
foo: string;
>foo : Symbol(IWithNoStringIndexSignature.foo, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 9, 39))
}
interface IWithNoNumberIndexSignature {
>IWithNoNumberIndexSignature : Symbol(IWithNoNumberIndexSignature, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 11, 1))
0: string;
}
interface IWithStringIndexSignature1 {
>IWithStringIndexSignature1 : Symbol(IWithStringIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 14, 1))
[a: string]: SomeType;
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 16, 5))
>SomeType : Symbol(SomeType, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 0, 0))
}
interface IWithStringIndexSignature2 {
>IWithStringIndexSignature2 : Symbol(IWithStringIndexSignature2, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 17, 1))
[a: string]: SomeType2;
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 19, 5))
>SomeType2 : Symbol(SomeType2, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 4, 1))
}
interface IWithNumberIndexSignature1 {
>IWithNumberIndexSignature1 : Symbol(IWithNumberIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 20, 1))
[a: number]: SomeType;
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 22, 5))
>SomeType : Symbol(SomeType, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 0, 0))
}
interface IWithNumberIndexSignature2 {
>IWithNumberIndexSignature2 : Symbol(IWithNumberIndexSignature2, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 23, 1))
[a: number]: SomeType2;
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 25, 5))
>SomeType2 : Symbol(SomeType2, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 4, 1))
}
// When an object literal is contextually typed by a type that includes a string index signature,
// the resulting type of the object literal includes a string index signature with the union type of
// the types of the properties declared in the object literal, or the Undefined type if the object literal
// is empty.Likewise, when an object literal is contextually typed by a type that includes a numeric index
// signature, the resulting type of the object literal includes a numeric index signature with the union type
// of the types of the numerically named properties(section 3.7.4) declared in the object literal,
// or the Undefined type if the object literal declares no numerically named properties.
// Let S be the set of types in U that has a string index signature.
// If S is not empty, U has a string index signature of a union type of
// the types of the string index signatures from each type in S.
var x: IWithNoStringIndexSignature | IWithStringIndexSignature1 = { z: a => a }; // a should be number
>x : Symbol(x, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 39, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 40, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 41, 3))
>IWithNoStringIndexSignature : Symbol(IWithNoStringIndexSignature, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 7, 1))
>IWithStringIndexSignature1 : Symbol(IWithStringIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 14, 1))
>z : Symbol(z, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 39, 67))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 39, 70))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 39, 70))
var x: IWithNoStringIndexSignature | IWithStringIndexSignature1 = { foo: a => a }; // a should be any
>x : Symbol(x, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 39, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 40, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 41, 3))
>IWithNoStringIndexSignature : Symbol(IWithNoStringIndexSignature, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 7, 1))
>IWithStringIndexSignature1 : Symbol(IWithStringIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 14, 1))
>foo : Symbol(foo, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 40, 67))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 40, 72))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 40, 72))
var x: IWithNoStringIndexSignature | IWithStringIndexSignature1 = { foo: "hello" };
>x : Symbol(x, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 39, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 40, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 41, 3))
>IWithNoStringIndexSignature : Symbol(IWithNoStringIndexSignature, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 7, 1))
>IWithStringIndexSignature1 : Symbol(IWithStringIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 14, 1))
>foo : Symbol(foo, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 41, 67))
var x2: IWithStringIndexSignature1 | IWithStringIndexSignature2 = { z: a => a.toString() }; // a should be number
>x2 : Symbol(x2, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 42, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 43, 3))
>IWithStringIndexSignature1 : Symbol(IWithStringIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 14, 1))
>IWithStringIndexSignature2 : Symbol(IWithStringIndexSignature2, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 17, 1))
>z : Symbol(z, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 42, 67))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 42, 70))
>a.toString : Symbol(Number.toString, Decl(lib.d.ts, --, --))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 42, 70))
>toString : Symbol(Number.toString, Decl(lib.d.ts, --, --))
var x2: IWithStringIndexSignature1 | IWithStringIndexSignature2 = { z: a => a }; // a should be number
>x2 : Symbol(x2, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 42, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 43, 3))
>IWithStringIndexSignature1 : Symbol(IWithStringIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 14, 1))
>IWithStringIndexSignature2 : Symbol(IWithStringIndexSignature2, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 17, 1))
>z : Symbol(z, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 43, 67))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 43, 70))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 43, 70))
// Let S be the set of types in U that has a numeric index signature.
// If S is not empty, U has a numeric index signature of a union type of
// the types of the numeric index signatures from each type in S.
var x3: IWithNoNumberIndexSignature | IWithNumberIndexSignature1 = { 1: a => a }; // a should be number
>x3 : Symbol(x3, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 49, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 50, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 51, 3))
>IWithNoNumberIndexSignature : Symbol(IWithNoNumberIndexSignature, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 11, 1))
>IWithNumberIndexSignature1 : Symbol(IWithNumberIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 20, 1))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 49, 71))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 49, 71))
var x3: IWithNoNumberIndexSignature | IWithNumberIndexSignature1 = { 0: a => a }; // a should be any
>x3 : Symbol(x3, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 49, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 50, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 51, 3))
>IWithNoNumberIndexSignature : Symbol(IWithNoNumberIndexSignature, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 11, 1))
>IWithNumberIndexSignature1 : Symbol(IWithNumberIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 20, 1))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 50, 71))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 50, 71))
var x3: IWithNoNumberIndexSignature | IWithNumberIndexSignature1 = { 0: "hello" };
>x3 : Symbol(x3, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 49, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 50, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 51, 3))
>IWithNoNumberIndexSignature : Symbol(IWithNoNumberIndexSignature, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 11, 1))
>IWithNumberIndexSignature1 : Symbol(IWithNumberIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 20, 1))
var x4: IWithNumberIndexSignature1 | IWithNumberIndexSignature2 = { 1: a => a.toString() }; // a should be number
>x4 : Symbol(x4, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 52, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 53, 3))
>IWithNumberIndexSignature1 : Symbol(IWithNumberIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 20, 1))
>IWithNumberIndexSignature2 : Symbol(IWithNumberIndexSignature2, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 23, 1))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 52, 70))
>a.toString : Symbol(Number.toString, Decl(lib.d.ts, --, --))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 52, 70))
>toString : Symbol(Number.toString, Decl(lib.d.ts, --, --))
var x4: IWithNumberIndexSignature1 | IWithNumberIndexSignature2 = { 1: a => a }; // a should be number
>x4 : Symbol(x4, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 52, 3), Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 53, 3))
>IWithNumberIndexSignature1 : Symbol(IWithNumberIndexSignature1, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 20, 1))
>IWithNumberIndexSignature2 : Symbol(IWithNumberIndexSignature2, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 23, 1))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 53, 70))
>a : Symbol(a, Decl(contextualTypeWithUnionTypeIndexSignatures.ts, 53, 70))
|
