File: mappedTypeContextualTypesApplied.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 (124 lines) | stat: -rw-r--r-- 4,393 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
116
117
118
119
120
121
122
123
124
=== tests/cases/compiler/mappedTypeContextualTypesApplied.ts ===
type TakeString = (s: string) => any;
>TakeString : (s: string) => any
>s : string

// Various functions accepting an object whose properties are TakeString functions.
// Note these all use mapped types.
declare function mapped1<T extends {[P in string]: TakeString}>(obj: T): void;
>mapped1 : <T extends { [x: string]: TakeString; }>(obj: T) => void
>obj : T

declare function mapped2<T extends {[P in keyof T]: TakeString}>(obj: T): void;
>mapped2 : <T extends { [P in keyof T]: TakeString; }>(obj: T) => void
>obj : T

declare function mapped3<T extends {[P in keyof any]: TakeString}>(obj: T): void;
>mapped3 : <T extends { [x: string]: TakeString; }>(obj: T) => void
>obj : T

declare function mapped4<T>(obj: T & {[P in keyof T]: TakeString}): void;
>mapped4 : <T>(obj: T & { [P in keyof T]: TakeString; }) => void
>obj : T & { [P in keyof T]: TakeString; }

declare function mapped5<T, K extends keyof T>(obj: T & {[P in K]: TakeString}): void;
>mapped5 : <T, K extends keyof T>(obj: T & { [P in K]: TakeString; }) => void
>obj : T & { [P in K]: TakeString; }

declare function mapped6<K extends string>(obj: {[P in K]: TakeString}): void;
>mapped6 : <K extends string>(obj: { [P in K]: TakeString; }) => void
>obj : { [P in K]: TakeString; }

declare function mapped7<K extends keyof any>(obj: {[P in K]: TakeString}): void;
>mapped7 : <K extends string | number | symbol>(obj: { [P in K]: TakeString; }) => void
>obj : { [P in K]: TakeString; }

declare function mapped8<K extends 'foo'>(obj: {[P in K]: TakeString}): void;
>mapped8 : <K extends "foo">(obj: { [P in K]: TakeString; }) => void
>obj : { [P in K]: TakeString; }

declare function mapped9<K extends 'foo'|'bar'>(obj: {[P in K]: TakeString}): void;
>mapped9 : <K extends "foo" | "bar">(obj: { [P in K]: TakeString; }) => void
>obj : { [P in K]: TakeString; }

mapped1({foo: s => 42});
>mapped1({foo: s => 42}) : void
>mapped1 : <T extends { [x: string]: TakeString; }>(obj: T) => void
>{foo: s => 42} : { foo: (s: string) => number; }
>foo : (s: string) => number
>s => 42 : (s: string) => number
>s : string
>42 : 42

mapped2({foo: s => 42});
>mapped2({foo: s => 42}) : void
>mapped2 : <T extends { [P in keyof T]: TakeString; }>(obj: T) => void
>{foo: s => 42} : { foo: (s: string) => number; }
>foo : (s: string) => number
>s => 42 : (s: string) => number
>s : string
>42 : 42

mapped3({foo: s => 42});
>mapped3({foo: s => 42}) : void
>mapped3 : <T extends { [x: string]: TakeString; }>(obj: T) => void
>{foo: s => 42} : { foo: (s: string) => number; }
>foo : (s: string) => number
>s => 42 : (s: string) => number
>s : string
>42 : 42

mapped4({foo: s => 42});
>mapped4({foo: s => 42}) : void
>mapped4 : <T>(obj: T & { [P in keyof T]: TakeString; }) => void
>{foo: s => 42} : { foo: (s: string) => number; }
>foo : (s: string) => number
>s => 42 : (s: string) => number
>s : string
>42 : 42

mapped5({foo: s => 42});
>mapped5({foo: s => 42}) : void
>mapped5 : <T, K extends keyof T>(obj: T & { [P in K]: TakeString; }) => void
>{foo: s => 42} : { foo: (s: string) => number; }
>foo : (s: string) => number
>s => 42 : (s: string) => number
>s : string
>42 : 42

mapped6({foo: s => 42});
>mapped6({foo: s => 42}) : void
>mapped6 : <K extends string>(obj: { [P in K]: TakeString; }) => void
>{foo: s => 42} : { foo: (s: string) => number; }
>foo : (s: string) => number
>s => 42 : (s: string) => number
>s : string
>42 : 42

mapped7({foo: s => 42});
>mapped7({foo: s => 42}) : void
>mapped7 : <K extends string | number | symbol>(obj: { [P in K]: TakeString; }) => void
>{foo: s => 42} : { foo: (s: string) => number; }
>foo : (s: string) => number
>s => 42 : (s: string) => number
>s : string
>42 : 42

mapped8({foo: s => 42});
>mapped8({foo: s => 42}) : void
>mapped8 : <K extends "foo">(obj: { [P in K]: TakeString; }) => void
>{foo: s => 42} : { foo: (s: string) => number; }
>foo : (s: string) => number
>s => 42 : (s: string) => number
>s : string
>42 : 42

mapped9({foo: s => 42});
>mapped9({foo: s => 42}) : void
>mapped9 : <K extends "foo" | "bar">(obj: { [P in K]: TakeString; }) => void
>{foo: s => 42} : { foo: (s: string) => number; }
>foo : (s: string) => number
>s => 42 : (s: string) => number
>s : string
>42 : 42