1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
//// [tests/cases/compiler/instanceofNarrowReadonlyArray.ts] ////
=== instanceofNarrowReadonlyArray.ts ===
// @strict
function narrow(x: readonly number[] | number): readonly number[] {
>narrow : (x: readonly number[] | number) => readonly number[]
>x : number | readonly number[]
if (x instanceof Array) {
>x instanceof Array : boolean
>x : number | readonly number[]
>Array : ArrayConstructor
return x;
>x : readonly number[]
} else {
return [x];
>[x] : number[]
>x : number
}
}
|
