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
|
=== tests/cases/conformance/es6/spread/arraySpreadInCall.ts ===
declare function f1(a: number, b: number, c: number, d: number, e: number, f: number): void;
>f1 : (a: number, b: number, c: number, d: number, e: number, f: number) => void
>a : number
>b : number
>c : number
>d : number
>e : number
>f : number
f1(1, 2, 3, 4, ...[5, 6]);
>f1(1, 2, 3, 4, ...[5, 6]) : void
>f1 : (a: number, b: number, c: number, d: number, e: number, f: number) => void
>1 : 1
>2 : 2
>3 : 3
>4 : 4
>...[5, 6] : number
>[5, 6] : readonly [number, number]
>5 : 5
>6 : 6
f1(...[1], 2, 3, 4, 5, 6);
>f1(...[1], 2, 3, 4, 5, 6) : void
>f1 : (a: number, b: number, c: number, d: number, e: number, f: number) => void
>...[1] : number
>[1] : readonly [number]
>1 : 1
>2 : 2
>3 : 3
>4 : 4
>5 : 5
>6 : 6
f1(1, 2, ...[3, 4], 5, 6);
>f1(1, 2, ...[3, 4], 5, 6) : void
>f1 : (a: number, b: number, c: number, d: number, e: number, f: number) => void
>1 : 1
>2 : 2
>...[3, 4] : number
>[3, 4] : readonly [number, number]
>3 : 3
>4 : 4
>5 : 5
>6 : 6
f1(1, 2, ...[3], 4, ...[5, 6]);
>f1(1, 2, ...[3], 4, ...[5, 6]) : void
>f1 : (a: number, b: number, c: number, d: number, e: number, f: number) => void
>1 : 1
>2 : 2
>...[3] : number
>[3] : readonly [number]
>3 : 3
>4 : 4
>...[5, 6] : number
>[5, 6] : readonly [number, number]
>5 : 5
>6 : 6
f1(...[1, 2], ...[3, 4], ...[5, 6]);
>f1(...[1, 2], ...[3, 4], ...[5, 6]) : void
>f1 : (a: number, b: number, c: number, d: number, e: number, f: number) => void
>...[1, 2] : number
>[1, 2] : readonly [number, number]
>1 : 1
>2 : 2
>...[3, 4] : number
>[3, 4] : readonly [number, number]
>3 : 3
>4 : 4
>...[5, 6] : number
>[5, 6] : readonly [number, number]
>5 : 5
>6 : 6
declare function f2<T extends unknown[]>(...args: T): T;
>f2 : <T extends unknown[]>(...args: T) => T
>args : T
const x21 = f2(...[1, 'foo'])
>x21 : [number, string]
>f2(...[1, 'foo']) : [number, string]
>f2 : <T extends unknown[]>(...args: T) => T
>...[1, 'foo'] : string | number
>[1, 'foo'] : readonly [number, string]
>1 : 1
>'foo' : "foo"
const x22 = f2(true, ...[1, 'foo'])
>x22 : [boolean, number, string]
>f2(true, ...[1, 'foo']) : [boolean, number, string]
>f2 : <T extends unknown[]>(...args: T) => T
>true : true
>...[1, 'foo'] : string | number
>[1, 'foo'] : readonly [number, string]
>1 : 1
>'foo' : "foo"
declare function f3<T extends readonly unknown[]>(...args: T): T;
>f3 : <T extends readonly unknown[]>(...args: T) => T
>args : T
const x31 = f3(...[1, 'foo'])
>x31 : [number, string]
>f3(...[1, 'foo']) : [number, string]
>f3 : <T extends readonly unknown[]>(...args: T) => T
>...[1, 'foo'] : string | number
>[1, 'foo'] : readonly [number, string]
>1 : 1
>'foo' : "foo"
const x32 = f3(true, ...[1, 'foo'])
>x32 : [boolean, number, string]
>f3(true, ...[1, 'foo']) : [boolean, number, string]
>f3 : <T extends readonly unknown[]>(...args: T) => T
>true : true
>...[1, 'foo'] : string | number
>[1, 'foo'] : readonly [number, string]
>1 : 1
>'foo' : "foo"
// dicovered in #52845#issuecomment-1459132562
interface IAction {
run(event?: unknown): unknown;
>run : (event?: unknown) => unknown
>event : unknown
}
declare const action: IAction
>action : IAction
action.run(...[100, 'foo']) // error
>action.run(...[100, 'foo']) : unknown
>action.run : (event?: unknown) => unknown
>action : IAction
>run : (event?: unknown) => unknown
>...[100, 'foo'] : string | number
>[100, 'foo'] : readonly [number, string]
>100 : 100
>'foo' : "foo"
|
