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
|
=== tests/cases/conformance/types/typeRelationships/widenedTypes/initializersWidened.ts ===
// these are widened to any at the point of assignment
var x1 = null;
>x1 : any
>null : null
var y1 = undefined;
>y1 : any
>undefined : undefined
var z1 = void 0;
>z1 : any
>void 0 : undefined
>0 : 0
// these are not widened
var x2: null;
>x2 : null
>null : null
var y2: undefined;
>y2 : undefined
var x3: null = null;
>x3 : null
>null : null
>null : null
var y3: undefined = undefined;
>y3 : undefined
>undefined : undefined
var z3: undefined = void 0;
>z3 : undefined
>void 0 : undefined
>0 : 0
// widen only when all constituents of union are widening
var x4 = null || null;
>x4 : any
>null || null : null
>null : null
>null : null
var y4 = undefined || undefined;
>y4 : any
>undefined || undefined : undefined
>undefined : undefined
>undefined : undefined
var z4 = void 0 || void 0;
>z4 : any
>void 0 || void 0 : undefined
>void 0 : undefined
>0 : 0
>void 0 : undefined
>0 : 0
var x5 = null || x2;
>x5 : null
>null || x2 : null
>null : null
>x2 : null
var y5 = undefined || y2;
>y5 : undefined
>undefined || y2 : undefined
>undefined : undefined
>y2 : undefined
var z5 = void 0 || y2;
>z5 : undefined
>void 0 || y2 : undefined
>void 0 : undefined
>0 : 0
>y2 : undefined
|
