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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
=== tests/cases/conformance/types/typeAliases/intrinsicTypes.ts ===
type TU1 = Uppercase<'hello'>; // "HELLO"
>TU1 : Symbol(TU1, Decl(intrinsicTypes.ts, 0, 0))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
type TU2 = Uppercase<'foo' | 'bar'>; // "FOO" | "BAR"
>TU2 : Symbol(TU2, Decl(intrinsicTypes.ts, 0, 30))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
type TU3 = Uppercase<string>; // Uppercase<string>
>TU3 : Symbol(TU3, Decl(intrinsicTypes.ts, 1, 36))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
type TU4 = Uppercase<any>; // Uppercase<`${any}`>
>TU4 : Symbol(TU4, Decl(intrinsicTypes.ts, 2, 29))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
type TU5 = Uppercase<never>; // never
>TU5 : Symbol(TU5, Decl(intrinsicTypes.ts, 3, 26))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
type TU6 = Uppercase<42>; // Error
>TU6 : Symbol(TU6, Decl(intrinsicTypes.ts, 4, 28))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
type TL1 = Lowercase<'HELLO'>; // "hello"
>TL1 : Symbol(TL1, Decl(intrinsicTypes.ts, 5, 25))
>Lowercase : Symbol(Lowercase, Decl(lib.es5.d.ts, --, --))
type TL2 = Lowercase<'FOO' | 'BAR'>; // "foo" | "bar"
>TL2 : Symbol(TL2, Decl(intrinsicTypes.ts, 7, 30))
>Lowercase : Symbol(Lowercase, Decl(lib.es5.d.ts, --, --))
type TL3 = Lowercase<string>; // Lowercase<string>
>TL3 : Symbol(TL3, Decl(intrinsicTypes.ts, 8, 36))
>Lowercase : Symbol(Lowercase, Decl(lib.es5.d.ts, --, --))
type TL4 = Lowercase<any>; // Lowercase<`${any}`>
>TL4 : Symbol(TL4, Decl(intrinsicTypes.ts, 9, 29))
>Lowercase : Symbol(Lowercase, Decl(lib.es5.d.ts, --, --))
type TL5 = Lowercase<never>; // never
>TL5 : Symbol(TL5, Decl(intrinsicTypes.ts, 10, 26))
>Lowercase : Symbol(Lowercase, Decl(lib.es5.d.ts, --, --))
type TL6 = Lowercase<42>; // Error
>TL6 : Symbol(TL6, Decl(intrinsicTypes.ts, 11, 28))
>Lowercase : Symbol(Lowercase, Decl(lib.es5.d.ts, --, --))
type TC1 = Capitalize<'hello'>; // "Hello"
>TC1 : Symbol(TC1, Decl(intrinsicTypes.ts, 12, 25))
>Capitalize : Symbol(Capitalize, Decl(lib.es5.d.ts, --, --))
type TC2 = Capitalize<'foo' | 'bar'>; // "Foo" | "Bar"
>TC2 : Symbol(TC2, Decl(intrinsicTypes.ts, 14, 31))
>Capitalize : Symbol(Capitalize, Decl(lib.es5.d.ts, --, --))
type TC3 = Capitalize<string>; // Capitalize<string>
>TC3 : Symbol(TC3, Decl(intrinsicTypes.ts, 15, 37))
>Capitalize : Symbol(Capitalize, Decl(lib.es5.d.ts, --, --))
type TC4 = Capitalize<any>; // Capitalize<`${any}`>
>TC4 : Symbol(TC4, Decl(intrinsicTypes.ts, 16, 30))
>Capitalize : Symbol(Capitalize, Decl(lib.es5.d.ts, --, --))
type TC5 = Capitalize<never>; // never
>TC5 : Symbol(TC5, Decl(intrinsicTypes.ts, 17, 27))
>Capitalize : Symbol(Capitalize, Decl(lib.es5.d.ts, --, --))
type TC6 = Capitalize<42>; // Error
>TC6 : Symbol(TC6, Decl(intrinsicTypes.ts, 18, 29))
>Capitalize : Symbol(Capitalize, Decl(lib.es5.d.ts, --, --))
type TN1 = Uncapitalize<'Hello'>; // "hello"
>TN1 : Symbol(TN1, Decl(intrinsicTypes.ts, 19, 26))
>Uncapitalize : Symbol(Uncapitalize, Decl(lib.es5.d.ts, --, --))
type TN2 = Uncapitalize<'Foo' | 'Bar'>; // "foo" | "bar"
>TN2 : Symbol(TN2, Decl(intrinsicTypes.ts, 21, 33))
>Uncapitalize : Symbol(Uncapitalize, Decl(lib.es5.d.ts, --, --))
type TN3 = Uncapitalize<string>; // Uncapitalize<string>
>TN3 : Symbol(TN3, Decl(intrinsicTypes.ts, 22, 39))
>Uncapitalize : Symbol(Uncapitalize, Decl(lib.es5.d.ts, --, --))
type TN4 = Uncapitalize<any>; // Uncapitalize<`${any}`>
>TN4 : Symbol(TN4, Decl(intrinsicTypes.ts, 23, 32))
>Uncapitalize : Symbol(Uncapitalize, Decl(lib.es5.d.ts, --, --))
type TN5 = Uncapitalize<never>; // never
>TN5 : Symbol(TN5, Decl(intrinsicTypes.ts, 24, 29))
>Uncapitalize : Symbol(Uncapitalize, Decl(lib.es5.d.ts, --, --))
type TN6 = Uncapitalize<42>; // Error
>TN6 : Symbol(TN6, Decl(intrinsicTypes.ts, 25, 31))
>Uncapitalize : Symbol(Uncapitalize, Decl(lib.es5.d.ts, --, --))
type TX1<S extends string> = Uppercase<`aB${S}`>;
>TX1 : Symbol(TX1, Decl(intrinsicTypes.ts, 26, 28))
>S : Symbol(S, Decl(intrinsicTypes.ts, 28, 9))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
>S : Symbol(S, Decl(intrinsicTypes.ts, 28, 9))
type TX2 = TX1<'xYz'>; // "ABXYZ"
>TX2 : Symbol(TX2, Decl(intrinsicTypes.ts, 28, 49))
>TX1 : Symbol(TX1, Decl(intrinsicTypes.ts, 26, 28))
type TX3<S extends string> = Lowercase<`aB${S}`>;
>TX3 : Symbol(TX3, Decl(intrinsicTypes.ts, 29, 22))
>S : Symbol(S, Decl(intrinsicTypes.ts, 30, 9))
>Lowercase : Symbol(Lowercase, Decl(lib.es5.d.ts, --, --))
>S : Symbol(S, Decl(intrinsicTypes.ts, 30, 9))
type TX4 = TX3<'xYz'>; // "abxyz"
>TX4 : Symbol(TX4, Decl(intrinsicTypes.ts, 30, 49))
>TX3 : Symbol(TX3, Decl(intrinsicTypes.ts, 29, 22))
type TX5 = `${Uppercase<'abc'>}${Lowercase<'XYZ'>}`; // "ABCxyz"
>TX5 : Symbol(TX5, Decl(intrinsicTypes.ts, 31, 22))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
>Lowercase : Symbol(Lowercase, Decl(lib.es5.d.ts, --, --))
type MyUppercase<S extends string> = intrinsic; // Error
>MyUppercase : Symbol(MyUppercase, Decl(intrinsicTypes.ts, 32, 52))
>S : Symbol(S, Decl(intrinsicTypes.ts, 34, 17))
function foo1<T extends string, U extends T>(s: string, x: Uppercase<T>, y: Uppercase<U>) {
>foo1 : Symbol(foo1, Decl(intrinsicTypes.ts, 34, 47))
>T : Symbol(T, Decl(intrinsicTypes.ts, 36, 14))
>U : Symbol(U, Decl(intrinsicTypes.ts, 36, 31))
>T : Symbol(T, Decl(intrinsicTypes.ts, 36, 14))
>s : Symbol(s, Decl(intrinsicTypes.ts, 36, 45))
>x : Symbol(x, Decl(intrinsicTypes.ts, 36, 55))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(intrinsicTypes.ts, 36, 14))
>y : Symbol(y, Decl(intrinsicTypes.ts, 36, 72))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
>U : Symbol(U, Decl(intrinsicTypes.ts, 36, 31))
s = x;
>s : Symbol(s, Decl(intrinsicTypes.ts, 36, 45))
>x : Symbol(x, Decl(intrinsicTypes.ts, 36, 55))
s = y;
>s : Symbol(s, Decl(intrinsicTypes.ts, 36, 45))
>y : Symbol(y, Decl(intrinsicTypes.ts, 36, 72))
x = s; // Error
>x : Symbol(x, Decl(intrinsicTypes.ts, 36, 55))
>s : Symbol(s, Decl(intrinsicTypes.ts, 36, 45))
x = y;
>x : Symbol(x, Decl(intrinsicTypes.ts, 36, 55))
>y : Symbol(y, Decl(intrinsicTypes.ts, 36, 72))
y = s; // Error
>y : Symbol(y, Decl(intrinsicTypes.ts, 36, 72))
>s : Symbol(s, Decl(intrinsicTypes.ts, 36, 45))
y = x; // Error
>y : Symbol(y, Decl(intrinsicTypes.ts, 36, 72))
>x : Symbol(x, Decl(intrinsicTypes.ts, 36, 55))
}
function foo2<T extends 'foo' | 'bar'>(x: Uppercase<T>) {
>foo2 : Symbol(foo2, Decl(intrinsicTypes.ts, 43, 1))
>T : Symbol(T, Decl(intrinsicTypes.ts, 45, 14))
>x : Symbol(x, Decl(intrinsicTypes.ts, 45, 39))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(intrinsicTypes.ts, 45, 14))
let s: 'FOO' | 'BAR' = x;
>s : Symbol(s, Decl(intrinsicTypes.ts, 46, 7))
>x : Symbol(x, Decl(intrinsicTypes.ts, 45, 39))
}
declare function foo3<T extends string>(x: Uppercase<T>): T;
>foo3 : Symbol(foo3, Decl(intrinsicTypes.ts, 47, 1))
>T : Symbol(T, Decl(intrinsicTypes.ts, 49, 22))
>x : Symbol(x, Decl(intrinsicTypes.ts, 49, 40))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(intrinsicTypes.ts, 49, 22))
>T : Symbol(T, Decl(intrinsicTypes.ts, 49, 22))
function foo4<U extends string>(x: Uppercase<U>) {
>foo4 : Symbol(foo4, Decl(intrinsicTypes.ts, 49, 60))
>U : Symbol(U, Decl(intrinsicTypes.ts, 51, 14))
>x : Symbol(x, Decl(intrinsicTypes.ts, 51, 32))
>Uppercase : Symbol(Uppercase, Decl(lib.es5.d.ts, --, --))
>U : Symbol(U, Decl(intrinsicTypes.ts, 51, 14))
return foo3(x);
>foo3 : Symbol(foo3, Decl(intrinsicTypes.ts, 47, 1))
>x : Symbol(x, Decl(intrinsicTypes.ts, 51, 32))
}
|
