File: genericCallWithFunctionTypedArguments4.types

package info (click to toggle)
node-typescript 3.3.3333-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 324,548 kB
  • sloc: makefile: 6; sh: 3
file content (55 lines) | stat: -rw-r--r-- 1,195 bytes parent folder | download | duplicates (5)
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
=== tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithFunctionTypedArguments4.ts ===
// No inference is made from function typed arguments which have multiple call signatures

class C { foo: string }
>C : C
>foo : string

class D { bar: string }
>D : D
>bar : string

var a: {
>a : { new (x: boolean): C; new (x: string): D; }

    new(x: boolean): C;
>x : boolean

    new(x: string): D;
>x : string
}

function foo4<T, U>(cb: new(x: T) => U) {
>foo4 : <T, U>(cb: new (x: T) => U) => U
>cb : new (x: T) => U
>x : T

    var u: U;
>u : U

    return u;
>u : U
}

var r = foo4(a); // T is {} (candidates boolean and string), U is {} (candidates C and D)
>r : D
>foo4(a) : D
>foo4 : <T, U>(cb: new (x: T) => U) => U
>a : { new (x: boolean): C; new (x: string): D; }

var b: {
>b : { new <T>(x: boolean): T; new <T>(x: T): any; }

    new<T>(x: boolean): T;
>x : boolean

    new<T>(x: T): any;
>x : T
}

var r2 = foo4(b); // T is {} (candidates boolean and {}), U is any (candidates any and {})
>r2 : any
>foo4(b) : any
>foo4 : <T, U>(cb: new (x: T) => U) => U
>b : { new <T>(x: boolean): T; new <T>(x: T): any; }