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
|
=== tests/cases/compiler/a.ts ===
interface BigIntIndex<E> {
>BigIntIndex : Symbol(BigIntIndex, Decl(a.ts, 0, 0))
>E : Symbol(E, Decl(a.ts, 0, 22))
[index: bigint]: E; // should error
>index : Symbol(index, Decl(a.ts, 1, 5))
>E : Symbol(E, Decl(a.ts, 0, 22))
}
const arr: number[] = [1, 2, 3];
>arr : Symbol(arr, Decl(a.ts, 4, 5))
let num: number = arr[1];
>num : Symbol(num, Decl(a.ts, 5, 3))
>arr : Symbol(arr, Decl(a.ts, 4, 5))
num = arr["1"];
>num : Symbol(num, Decl(a.ts, 5, 3))
>arr : Symbol(arr, Decl(a.ts, 4, 5))
num = arr[1n]; // should error
>num : Symbol(num, Decl(a.ts, 5, 3))
>arr : Symbol(arr, Decl(a.ts, 4, 5))
let key: keyof any; // should be type "string | number | symbol"
>key : Symbol(key, Decl(a.ts, 9, 3))
key = 123;
>key : Symbol(key, Decl(a.ts, 9, 3))
key = "abc";
>key : Symbol(key, Decl(a.ts, 9, 3))
key = Symbol();
>key : Symbol(key, Decl(a.ts, 9, 3))
>Symbol : Symbol(Symbol, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.symbol.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2019.symbol.d.ts, --, --))
key = 123n; // should error
>key : Symbol(key, Decl(a.ts, 9, 3))
// Show correct usage of bigint index: explicitly convert to string
const bigNum: bigint = 0n;
>bigNum : Symbol(bigNum, Decl(a.ts, 16, 5))
const typedArray = new Uint8Array(3);
>typedArray : Symbol(typedArray, Decl(a.ts, 17, 5))
>Uint8Array : Symbol(Uint8Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2016.array.include.d.ts, --, --))
typedArray[bigNum] = 0xAA; // should error
>typedArray : Symbol(typedArray, Decl(a.ts, 17, 5))
>bigNum : Symbol(bigNum, Decl(a.ts, 16, 5))
typedArray[String(bigNum)] = 0xAA;
>typedArray : Symbol(typedArray, Decl(a.ts, 17, 5))
>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 4 more)
>bigNum : Symbol(bigNum, Decl(a.ts, 16, 5))
typedArray["1"] = 0xBB;
>typedArray : Symbol(typedArray, Decl(a.ts, 17, 5))
typedArray[2] = 0xCC;
>typedArray : Symbol(typedArray, Decl(a.ts, 17, 5))
// {1n: 123} is a syntax error; must go in separate file so BigIntIndex error is shown
=== tests/cases/compiler/b.ts ===
// BigInt cannot be used as an object literal property
const a = {1n: 123};
>a : Symbol(a, Decl(b.ts, 1, 5))
const b = {[1n]: 456};
>b : Symbol(b, Decl(b.ts, 2, 5))
>[1n] : Symbol([1n], Decl(b.ts, 2, 11))
const c = {[bigNum]: 789};
>c : Symbol(c, Decl(b.ts, 3, 5))
>[bigNum] : Symbol([bigNum], Decl(b.ts, 3, 11))
>bigNum : Symbol(bigNum, Decl(a.ts, 16, 5))
|
