File: intersectionWithIndexSignatures.types

package info (click to toggle)
node-typescript 4.9.5%2Bds1-2
  • links: PTS, VCS
  • area: main
  • in suites: sid, trixie
  • size: 533,908 kB
  • sloc: javascript: 2,018,330; makefile: 7; sh: 1
file content (115 lines) | stat: -rw-r--r-- 2,658 bytes parent folder | download | duplicates (3)
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
=== tests/cases/conformance/types/intersection/intersectionWithIndexSignatures.ts ===
type A = { a: string };
>A : { a: string; }
>a : string

type B = { b: string };
>B : { b: string; }
>b : string

declare let sa1: { x: A & B };
>sa1 : { x: A & B; }
>x : A & B

declare let sa2: { x: A } & { x: B };
>sa2 : { x: A; } & { x: B; }
>x : A
>x : B

declare let ta1: { [key: string]: A & B };
>ta1 : { [key: string]: A & B; }
>key : string

declare let ta2: { [key: string]: A } & { [key: string]: B };
>ta2 : { [key: string]: A; } & { [key: string]: B; }
>key : string
>key : string

ta1 = sa1;
>ta1 = sa1 : { x: A & B; }
>ta1 : { [key: string]: A & B; }
>sa1 : { x: A & B; }

ta1 = sa2;
>ta1 = sa2 : { x: A; } & { x: B; }
>ta1 : { [key: string]: A & B; }
>sa2 : { x: A; } & { x: B; }

ta2 = sa1;
>ta2 = sa1 : { x: A & B; }
>ta2 : { [key: string]: A; } & { [key: string]: B; }
>sa1 : { x: A & B; }

ta2 = sa2;
>ta2 = sa2 : { x: A; } & { x: B; }
>ta2 : { [key: string]: A; } & { [key: string]: B; }
>sa2 : { x: A; } & { x: B; }

declare let sb1: { x: A } & { y: B };
>sb1 : { x: A; } & { y: B; }
>x : A
>y : B

declare let tb1: { [key: string]: A };
>tb1 : { [key: string]: A; }
>key : string

tb1 = sb1;  // Error
>tb1 = sb1 : { x: A; } & { y: B; }
>tb1 : { [key: string]: A; }
>sb1 : { x: A; } & { y: B; }

// Repro from #32484

type constr<Source, Tgt> = { [K in keyof Source]: string } & Pick<Tgt, Exclude<keyof Tgt, keyof Source>>;
>constr : constr<Source, Tgt>

type s = constr<{}, { [key: string]: { a: string } }>;
>s : {} & Pick<{ [key: string]: { a: string; }; }, string | number>
>key : string
>a : string

declare const q: s;
>q : s

q["asd"].a.substr(1);
>q["asd"].a.substr(1) : string
>q["asd"].a.substr : (from: number, length?: number | undefined) => string
>q["asd"].a : string
>q["asd"] : { a: string; }
>q : s
>"asd" : "asd"
>a : string
>substr : (from: number, length?: number | undefined) => string
>1 : 1

q["asd"].b;  // Error
>q["asd"].b : any
>q["asd"] : { a: string; }
>q : s
>"asd" : "asd"
>b : any

const d: { [key: string]: {a: string, b: string} } = q;  // Error
>d : { [key: string]: { a: string; b: string; }; }
>key : string
>a : string
>b : string
>q : s

// Repro from #32484

declare let ss: { a: string } & { b: number };
>ss : { a: string; } & { b: number; }
>a : string
>b : number

declare let tt: { [key: string]: string };
>tt : { [key: string]: string; }
>key : string

tt = ss;  // Error
>tt = ss : { a: string; } & { b: number; }
>tt : { [key: string]: string; }
>ss : { a: string; } & { b: number; }