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
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
|
=== tests/cases/compiler/varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts ===
type Either<L, A> = Left<L, A> | Right<L, A>;
>Either : Symbol(Either, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 0))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 12))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 14))
>Left : Symbol(Left, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 45))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 12))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 14))
>Right : Symbol(Right, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 14, 1))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 12))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 14))
class Left<L, A> {
>Left : Symbol(Left, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 45))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 2, 11))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 2, 13))
readonly _tag: 'Left' = 'Left'
>_tag : Symbol(Left._tag, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 2, 18))
readonly _A!: A
>_A : Symbol(Left._A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 3, 34))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 2, 13))
readonly _L!: L
>_L : Symbol(Left._L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 4, 19))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 2, 11))
constructor(readonly value: L) {}
>value : Symbol(Left.value, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 6, 16))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 2, 11))
/** The given function is applied if this is a `Right` */
map<B>(f: (a: A) => B): Either<L, B> {
>map : Symbol(Left.map, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 6, 37))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 8, 8))
>f : Symbol(f, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 8, 11))
>a : Symbol(a, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 8, 15))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 2, 13))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 8, 8))
>Either : Symbol(Either, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 0))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 2, 11))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 8, 8))
return this as any
>this : Symbol(Left, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 45))
}
ap<B>(fab: Either<L, (a: A) => B>): Either<L, B> {
>ap : Symbol(Left.ap, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 10, 5))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 11, 7))
>fab : Symbol(fab, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 11, 10))
>Either : Symbol(Either, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 0))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 2, 11))
>a : Symbol(a, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 11, 26))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 2, 13))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 11, 7))
>Either : Symbol(Either, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 0))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 2, 11))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 11, 7))
return null as any
}
}
class Right<L, A> {
>Right : Symbol(Right, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 14, 1))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 16, 12))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 16, 14))
readonly _tag: 'Right' = 'Right'
>_tag : Symbol(Right._tag, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 16, 19))
readonly _A!: A
>_A : Symbol(Right._A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 17, 36))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 16, 14))
readonly _L!: L
>_L : Symbol(Right._L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 18, 19))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 16, 12))
constructor(readonly value: A) {}
>value : Symbol(Right.value, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 20, 16))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 16, 14))
map<B>(f: (a: A) => B): Either<L, B> {
>map : Symbol(Right.map, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 20, 37))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 21, 8))
>f : Symbol(f, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 21, 11))
>a : Symbol(a, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 21, 15))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 16, 14))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 21, 8))
>Either : Symbol(Either, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 0))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 16, 12))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 21, 8))
return new Right(f(this.value))
>Right : Symbol(Right, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 14, 1))
>f : Symbol(f, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 21, 11))
>this.value : Symbol(Right.value, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 20, 16))
>this : Symbol(Right, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 14, 1))
>value : Symbol(Right.value, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 20, 16))
}
ap<B>(fab: Either<L, (a: A) => B>): Either<L, B> {
>ap : Symbol(Right.ap, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 23, 5))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 24, 7))
>fab : Symbol(fab, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 24, 10))
>Either : Symbol(Either, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 0))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 16, 12))
>a : Symbol(a, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 24, 26))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 16, 14))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 24, 7))
>Either : Symbol(Either, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 0))
>L : Symbol(L, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 16, 12))
>B : Symbol(B, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 24, 7))
return null as any;
}
}
class Type<A, O = A, I = unknown> {
>Type : Symbol(Type, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 27, 1))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 11))
>O : Symbol(O, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 13))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 11))
>I : Symbol(I, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 20))
readonly _A!: A;
>_A : Symbol(Type._A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 35))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 11))
readonly _O!: O;
>_O : Symbol(Type._O, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 30, 18))
>O : Symbol(O, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 13))
readonly _I!: I;
>_I : Symbol(Type._I, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 31, 18))
>I : Symbol(I, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 20))
constructor(
/** a unique name for this codec */
readonly name: string,
>name : Symbol(Type.name, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 33, 14))
/** a custom type guard */
readonly is: (u: unknown) => u is A,
>is : Symbol(Type.is, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 35, 26))
>u : Symbol(u, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 37, 18))
>u : Symbol(u, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 37, 18))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 11))
/** succeeds if a value of type I can be decoded to a value of type A */
readonly validate: (input: I, context: {}[]) => Either<{}[], A>,
>validate : Symbol(Type.validate, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 37, 40))
>input : Symbol(input, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 39, 24))
>I : Symbol(I, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 20))
>context : Symbol(context, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 39, 33))
>Either : Symbol(Either, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 0))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 11))
/** converts a value of type A to a value of type O */
readonly encode: (a: A) => O
>encode : Symbol(Type.encode, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 39, 68))
>a : Symbol(a, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 41, 22))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 11))
>O : Symbol(O, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 13))
) {}
/** a version of `validate` with a default context */
decode(i: I): Either<{}[], A> { return null as any; }
>decode : Symbol(Type.decode, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 42, 6))
>i : Symbol(i, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 44, 9))
>I : Symbol(I, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 20))
>Either : Symbol(Either, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 0, 0))
>A : Symbol(A, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 29, 11))
}
interface Any extends Type<any, any, any> {}
>Any : Symbol(Any, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 45, 1))
>Type : Symbol(Type, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 27, 1))
type TypeOf<C extends Any> = C["_A"];
>TypeOf : Symbol(TypeOf, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 47, 44))
>C : Symbol(C, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 49, 12))
>Any : Symbol(Any, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 45, 1))
>C : Symbol(C, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 49, 12))
type ToB<S extends {[_ in string | number | symbol]: Any}> = { [k in keyof S]: TypeOf<S[k]> };
>ToB : Symbol(ToB, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 49, 37))
>S : Symbol(S, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 51, 9))
>_ : Symbol(_, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 51, 21))
>Any : Symbol(Any, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 45, 1))
>k : Symbol(k, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 51, 64))
>S : Symbol(S, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 51, 9))
>TypeOf : Symbol(TypeOf, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 47, 44))
>S : Symbol(S, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 51, 9))
>k : Symbol(k, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 51, 64))
type ToA<S> = { [k in keyof S]: Type<S[k]> };
>ToA : Symbol(ToA, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 51, 94))
>S : Symbol(S, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 52, 9))
>k : Symbol(k, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 52, 17))
>S : Symbol(S, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 52, 9))
>Type : Symbol(Type, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 27, 1))
>S : Symbol(S, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 52, 9))
>k : Symbol(k, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 52, 17))
type NeededInfo<MyNamespaceSchema = {}> = {
>NeededInfo : Symbol(NeededInfo, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 52, 45))
>MyNamespaceSchema : Symbol(MyNamespaceSchema, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 54, 16))
ASchema: ToA<MyNamespaceSchema>;
>ASchema : Symbol(ASchema, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 54, 43))
>ToA : Symbol(ToA, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 51, 94))
>MyNamespaceSchema : Symbol(MyNamespaceSchema, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 54, 16))
};
export type MyInfo = NeededInfo<ToB<{ initialize: any }>>;
>MyInfo : Symbol(MyInfo, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 56, 2))
>NeededInfo : Symbol(NeededInfo, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 52, 45))
>ToB : Symbol(ToB, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 49, 37))
>initialize : Symbol(initialize, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 58, 37))
const tmp1: MyInfo = null!;
>tmp1 : Symbol(tmp1, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 60, 5))
>MyInfo : Symbol(MyInfo, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 56, 2))
function tmp2<N extends NeededInfo>(n: N) {}
>tmp2 : Symbol(tmp2, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 60, 27))
>N : Symbol(N, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 61, 14))
>NeededInfo : Symbol(NeededInfo, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 52, 45))
>n : Symbol(n, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 61, 36))
>N : Symbol(N, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 61, 14))
// tmp2(tmp1); // uncommenting this line removes a type error from a completely unrelated line ?? (see test 1, needs to behave the same)
class Server<X extends NeededInfo> {}
>Server : Symbol(Server, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 61, 44))
>X : Symbol(X, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 64, 13))
>NeededInfo : Symbol(NeededInfo, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 52, 45))
export class MyServer extends Server<MyInfo> {} // not assignable error at `MyInfo`
>MyServer : Symbol(MyServer, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 64, 37))
>Server : Symbol(Server, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 61, 44))
>MyInfo : Symbol(MyInfo, Decl(varianceProblingAndZeroOrderIndexSignatureRelationsAlign2.ts, 56, 2))
|
