File: typeArgumentInferenceConstructSignatures.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 (523 lines) | stat: -rw-r--r-- 14,218 bytes parent folder | download | duplicates (4)
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
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
=== tests/cases/conformance/expressions/functionCalls/typeArgumentInferenceConstructSignatures.ts ===
// Generic call with no parameters
interface NoParams {
    new <T>();
}
var noParams: NoParams;
>noParams : NoParams

new noParams();
>new noParams() : any
>noParams : NoParams

new noParams<string>();
>new noParams<string>() : any
>noParams : NoParams

new noParams<{}>();
>new noParams<{}>() : any
>noParams : NoParams

// Generic call with parameters but none use type parameter type
interface noGenericParams {
    new <T>(n: string);
>n : string
}
var noGenericParams: noGenericParams;
>noGenericParams : noGenericParams

new noGenericParams('');
>new noGenericParams('') : any
>noGenericParams : noGenericParams
>'' : ""

new noGenericParams<number>('');
>new noGenericParams<number>('') : any
>noGenericParams : noGenericParams
>'' : ""

new noGenericParams<{}>('');
>new noGenericParams<{}>('') : any
>noGenericParams : noGenericParams
>'' : ""

// Generic call with multiple type parameters and only one used in parameter type annotation
interface someGenerics1 {
    new <T, U>(n: T, m: number);
>n : T
>m : number
}
var someGenerics1: someGenerics1;
>someGenerics1 : someGenerics1

new someGenerics1(3, 4);
>new someGenerics1(3, 4) : any
>someGenerics1 : someGenerics1
>3 : 3
>4 : 4

new someGenerics1<string, number>(3, 4); // Error
>new someGenerics1<string, number>(3, 4) : any
>someGenerics1 : someGenerics1
>3 : 3
>4 : 4

new someGenerics1<number, {}>(3, 4);
>new someGenerics1<number, {}>(3, 4) : any
>someGenerics1 : someGenerics1
>3 : 3
>4 : 4

// Generic call with argument of function type whose parameter is of type parameter type
interface someGenerics2a {
    new <T>(n: (x: T) => void);
>n : (x: T) => void
>x : T
}
var someGenerics2a: someGenerics2a;
>someGenerics2a : someGenerics2a

new someGenerics2a((n: string) => n);
>new someGenerics2a((n: string) => n) : any
>someGenerics2a : someGenerics2a
>(n: string) => n : (n: string) => string
>n : string
>n : string

new someGenerics2a<string>((n: string) => n);
>new someGenerics2a<string>((n: string) => n) : any
>someGenerics2a : someGenerics2a
>(n: string) => n : (n: string) => string
>n : string
>n : string

new someGenerics2a<string>((n) => n.substr(0));
>new someGenerics2a<string>((n) => n.substr(0)) : any
>someGenerics2a : someGenerics2a
>(n) => n.substr(0) : (n: string) => string
>n : string
>n.substr(0) : string
>n.substr : (from: number, length?: number) => string
>n : string
>substr : (from: number, length?: number) => string
>0 : 0

interface someGenerics2b {
    new <T, U>(n: (x: T, y: U) => void);
>n : (x: T, y: U) => void
>x : T
>y : U
}
var someGenerics2b: someGenerics2b;
>someGenerics2b : someGenerics2b

new someGenerics2b((n: string, x: number) => n);
>new someGenerics2b((n: string, x: number) => n) : any
>someGenerics2b : someGenerics2b
>(n: string, x: number) => n : (n: string, x: number) => string
>n : string
>x : number
>n : string

new someGenerics2b<string, number>((n: string, t: number) => n);
>new someGenerics2b<string, number>((n: string, t: number) => n) : any
>someGenerics2b : someGenerics2b
>(n: string, t: number) => n : (n: string, t: number) => string
>n : string
>t : number
>n : string

new someGenerics2b<string, number>((n, t) => n.substr(t * t));
>new someGenerics2b<string, number>((n, t) => n.substr(t * t)) : any
>someGenerics2b : someGenerics2b
>(n, t) => n.substr(t * t) : (n: string, t: number) => string
>n : string
>t : number
>n.substr(t * t) : string
>n.substr : (from: number, length?: number) => string
>n : string
>substr : (from: number, length?: number) => string
>t * t : number
>t : number
>t : number

// Generic call with argument of function type whose parameter is not of type parameter type but body/return type uses type parameter
interface someGenerics3 {
    new <T>(producer: () => T);
>producer : () => T
}
var someGenerics3: someGenerics3;
>someGenerics3 : someGenerics3

new someGenerics3(() => '');
>new someGenerics3(() => '') : any
>someGenerics3 : someGenerics3
>() => '' : () => string
>'' : ""

new someGenerics3<Window>(() => undefined);
>new someGenerics3<Window>(() => undefined) : any
>someGenerics3 : someGenerics3
>() => undefined : () => any
>undefined : undefined

new someGenerics3<number>(() => 3);
>new someGenerics3<number>(() => 3) : any
>someGenerics3 : someGenerics3
>() => 3 : () => number
>3 : 3

// 2 parameter generic call with argument 1 of type parameter type and argument 2 of function type whose parameter is of type parameter type
interface someGenerics4 {
    new <T, U>(n: T, f: (x: U) => void);
>n : T
>f : (x: U) => void
>x : U
}
var someGenerics4: someGenerics4;
>someGenerics4 : someGenerics4

new someGenerics4(4, () => null);
>new someGenerics4(4, () => null) : any
>someGenerics4 : someGenerics4
>4 : 4
>() => null : () => any
>null : null

new someGenerics4<string, number>('', () => 3);
>new someGenerics4<string, number>('', () => 3) : any
>someGenerics4 : someGenerics4
>'' : ""
>() => 3 : () => number
>3 : 3

new someGenerics4<string, number>('', (x: string) => ''); // Error
>new someGenerics4<string, number>('', (x: string) => '') : any
>someGenerics4 : someGenerics4
>'' : ""
>(x: string) => '' : (x: string) => string
>x : string
>'' : ""

new someGenerics4<string, number>(null, null);
>new someGenerics4<string, number>(null, null) : any
>someGenerics4 : someGenerics4
>null : null
>null : null

// 2 parameter generic call with argument 2 of type parameter type and argument 1 of function type whose parameter is of type parameter type
interface someGenerics5 {
    new <U, T>(n: T, f: (x: U) => void);
>n : T
>f : (x: U) => void
>x : U
}
var someGenerics5: someGenerics5;
>someGenerics5 : someGenerics5

new someGenerics5(4, () => null);
>new someGenerics5(4, () => null) : any
>someGenerics5 : someGenerics5
>4 : 4
>() => null : () => any
>null : null

new someGenerics5<number, string>('', () => 3);
>new someGenerics5<number, string>('', () => 3) : any
>someGenerics5 : someGenerics5
>'' : ""
>() => 3 : () => number
>3 : 3

new someGenerics5<number, string>('', (x: string) => ''); // Error
>new someGenerics5<number, string>('', (x: string) => '') : any
>someGenerics5 : someGenerics5
>'' : ""
>(x: string) => '' : (x: string) => string
>x : string
>'' : ""

new someGenerics5<string, number>(null, null);
>new someGenerics5<string, number>(null, null) : any
>someGenerics5 : someGenerics5
>null : null
>null : null

// Generic call with multiple arguments of function types that each have parameters of the same generic type
interface someGenerics6 {
    new <A>(a: (a: A) => A, b: (b: A) => A, c: (c: A) => A);
>a : (a: A) => A
>a : A
>b : (b: A) => A
>b : A
>c : (c: A) => A
>c : A
}
var someGenerics6: someGenerics6;
>someGenerics6 : someGenerics6

new someGenerics6(n => n, n => n, n => n);
>new someGenerics6(n => n, n => n, n => n) : any
>someGenerics6 : someGenerics6
>n => n : (n: unknown) => unknown
>n : unknown
>n : unknown
>n => n : (n: unknown) => unknown
>n : unknown
>n : unknown
>n => n : (n: unknown) => unknown
>n : unknown
>n : unknown

new someGenerics6<number>(n => n, n => n, n => n);
>new someGenerics6<number>(n => n, n => n, n => n) : any
>someGenerics6 : someGenerics6
>n => n : (n: number) => number
>n : number
>n : number
>n => n : (n: number) => number
>n : number
>n : number
>n => n : (n: number) => number
>n : number
>n : number

new someGenerics6<number>((n: number) => n, (n: string) => n, (n: number) => n); // Error
>new someGenerics6<number>((n: number) => n, (n: string) => n, (n: number) => n) : any
>someGenerics6 : someGenerics6
>(n: number) => n : (n: number) => number
>n : number
>n : number
>(n: string) => n : (n: string) => string
>n : string
>n : string
>(n: number) => n : (n: number) => number
>n : number
>n : number

new someGenerics6<number>((n: number) => n, (n: number) => n, (n: number) => n);
>new someGenerics6<number>((n: number) => n, (n: number) => n, (n: number) => n) : any
>someGenerics6 : someGenerics6
>(n: number) => n : (n: number) => number
>n : number
>n : number
>(n: number) => n : (n: number) => number
>n : number
>n : number
>(n: number) => n : (n: number) => number
>n : number
>n : number

// Generic call with multiple arguments of function types that each have parameters of different generic type
interface someGenerics7 {
    new <A, B, C>(a: (a: A) => A, b: (b: B) => B, c: (c: C) => C);
>a : (a: A) => A
>a : A
>b : (b: B) => B
>b : B
>c : (c: C) => C
>c : C
}
var someGenerics7: someGenerics7;
>someGenerics7 : someGenerics7

new someGenerics7(n => n, n => n, n => n);
>new someGenerics7(n => n, n => n, n => n) : any
>someGenerics7 : someGenerics7
>n => n : (n: unknown) => unknown
>n : unknown
>n : unknown
>n => n : (n: unknown) => unknown
>n : unknown
>n : unknown
>n => n : (n: unknown) => unknown
>n : unknown
>n : unknown

new someGenerics7<number, string, number>(n => n, n => n, n => n);
>new someGenerics7<number, string, number>(n => n, n => n, n => n) : any
>someGenerics7 : someGenerics7
>n => n : (n: number) => number
>n : number
>n : number
>n => n : (n: string) => string
>n : string
>n : string
>n => n : (n: number) => number
>n : number
>n : number

new someGenerics7<number, string, number>((n: number) => n, (n: string) => n, (n: number) => n);
>new someGenerics7<number, string, number>((n: number) => n, (n: string) => n, (n: number) => n) : any
>someGenerics7 : someGenerics7
>(n: number) => n : (n: number) => number
>n : number
>n : number
>(n: string) => n : (n: string) => string
>n : string
>n : string
>(n: number) => n : (n: number) => number
>n : number
>n : number

// Generic call with argument of generic function type
interface someGenerics8 {
    new <T>(n: T): T;
>n : T
}
var someGenerics8: someGenerics8;
>someGenerics8 : someGenerics8

var x = new someGenerics8(someGenerics7);
>x : someGenerics7
>new someGenerics8(someGenerics7) : someGenerics7
>someGenerics8 : someGenerics8
>someGenerics7 : someGenerics7

new x<string, string, string>(null, null, null);
>new x<string, string, string>(null, null, null) : any
>x : someGenerics7
>null : null
>null : null
>null : null

// Generic call with multiple parameters of generic type passed arguments with no best common type
interface someGenerics9 {
    new <T>(a: T, b: T, c: T): T;
>a : T
>b : T
>c : T
}
var someGenerics9: someGenerics9;
>someGenerics9 : someGenerics9

var a9a = new someGenerics9('', 0, []);
>a9a : string
>new someGenerics9('', 0, []) : ""
>someGenerics9 : someGenerics9
>'' : ""
>0 : 0
>[] : undefined[]

var a9a: {};
>a9a : string

var a9b = new someGenerics9<{ a?: number; b?: string; }>({ a: 0 }, { b: '' }, null);
>a9b : { a?: number; b?: string; }
>new someGenerics9<{ a?: number; b?: string; }>({ a: 0 }, { b: '' }, null) : { a?: number; b?: string; }
>someGenerics9 : someGenerics9
>a : number
>b : string
>{ a: 0 } : { a: number; }
>a : number
>0 : 0
>{ b: '' } : { b: string; }
>b : string
>'' : ""
>null : null

var a9b: { a?: number; b?: string; };
>a9b : { a?: number; b?: string; }
>a : number
>b : string

// Generic call with multiple parameters of generic type passed arguments with multiple best common types
interface A91 {
    x: number;
>x : number

    y?: string;
>y : string
}
interface A92 {
    x: number;
>x : number

    z?: Window;
>z : Window
}
var a9e = new someGenerics9(undefined, { x: 6, z: window }, { x: 6, y: '' });
>a9e : { x: number; z: Window & typeof globalThis; y?: undefined; } | { x: number; y: string; z?: undefined; }
>new someGenerics9(undefined, { x: 6, z: window }, { x: 6, y: '' }) : { x: number; z: Window & typeof globalThis; y?: undefined; } | { x: number; y: string; z?: undefined; }
>someGenerics9 : someGenerics9
>undefined : undefined
>{ x: 6, z: window } : { x: number; z: Window & typeof globalThis; }
>x : number
>6 : 6
>z : Window & typeof globalThis
>window : Window & typeof globalThis
>{ x: 6, y: '' } : { x: number; y: string; }
>x : number
>6 : 6
>y : string
>'' : ""

var a9e: {};
>a9e : { x: number; z: Window & typeof globalThis; y?: undefined; } | { x: number; y: string; z?: undefined; }

var a9f = new someGenerics9<A92>(undefined, { x: 6, z: window }, { x: 6, y: '' });
>a9f : A92
>new someGenerics9<A92>(undefined, { x: 6, z: window }, { x: 6, y: '' }) : A92
>someGenerics9 : someGenerics9
>undefined : undefined
>{ x: 6, z: window } : { x: number; z: Window & typeof globalThis; }
>x : number
>6 : 6
>z : Window & typeof globalThis
>window : Window & typeof globalThis
>{ x: 6, y: '' } : { x: number; y: string; }
>x : number
>6 : 6
>y : string
>'' : ""

var a9f: A92;
>a9f : A92

// Generic call with multiple parameters of generic type passed arguments with a single best common type
var a9d = new someGenerics9({ x: 3 }, { x: 6 }, { x: 6 });
>a9d : { x: number; }
>new someGenerics9({ x: 3 }, { x: 6 }, { x: 6 }) : { x: number; }
>someGenerics9 : someGenerics9
>{ x: 3 } : { x: number; }
>x : number
>3 : 3
>{ x: 6 } : { x: number; }
>x : number
>6 : 6
>{ x: 6 } : { x: number; }
>x : number
>6 : 6

var a9d: { x: number; };
>a9d : { x: number; }
>x : number

// Generic call with multiple parameters of generic type where one argument is of type 'any'
var anyVar: any;
>anyVar : any

var a = new someGenerics9(7, anyVar, 4);
>a : any
>new someGenerics9(7, anyVar, 4) : any
>someGenerics9 : someGenerics9
>7 : 7
>anyVar : any
>4 : 4

var a: any;
>a : any

// Generic call with multiple parameters of generic type where one argument is [] and the other is not 'any'
var arr = new someGenerics9([], null, undefined);
>arr : any[]
>new someGenerics9([], null, undefined) : any[]
>someGenerics9 : someGenerics9
>[] : undefined[]
>null : null
>undefined : undefined

var arr: any[];
>arr : any[]