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
|
//// [unionTypeFromArrayLiteral.ts]
// The resulting type an array literal expression is determined as follows:
// If the array literal is empty, the resulting type is an array type with the element type Undefined.
// Otherwise, if the array literal is contextually typed by a type that has a property with the numeric name ‘0’, the resulting type is a tuple type constructed from the types of the element expressions.
// Otherwise, the resulting type is an array type with an element type that is the union of the types of the element expressions.
var arr1 = [1, 2]; // number[]
var arr2 = ["hello", true]; // (string | number)[]
var arr3Tuple: [number, string] = [3, "three"]; // [number, string]
var arr4Tuple: [number, string] = [3, "three", "hello"]; // [number, string, string]
var arrEmpty = [];
var arr5Tuple: {
0: string;
5: number;
} = ["hello", true, false, " hello", true, 10, "any"]; // Tuple
class C { foo() { } }
class D { foo2() { } }
class E extends C { foo3() { } }
class F extends C { foo4() { } }
var c: C, d: D, e: E, f: F;
var arr6 = [c, d]; // (C | D)[]
var arr7 = [c, d, e]; // (C | D)[]
var arr8 = [c, e]; // C[]
var arr9 = [e, f]; // (E|F)[]
//// [unionTypeFromArrayLiteral.js]
// The resulting type an array literal expression is determined as follows:
// If the array literal is empty, the resulting type is an array type with the element type Undefined.
// Otherwise, if the array literal is contextually typed by a type that has a property with the numeric name ‘0’, the resulting type is a tuple type constructed from the types of the element expressions.
// Otherwise, the resulting type is an array type with an element type that is the union of the types of the element expressions.
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var arr1 = [1, 2]; // number[]
var arr2 = ["hello", true]; // (string | number)[]
var arr3Tuple = [3, "three"]; // [number, string]
var arr4Tuple = [3, "three", "hello"]; // [number, string, string]
var arrEmpty = [];
var arr5Tuple = ["hello", true, false, " hello", true, 10, "any"]; // Tuple
var C = /** @class */ (function () {
function C() {
}
C.prototype.foo = function () { };
return C;
}());
var D = /** @class */ (function () {
function D() {
}
D.prototype.foo2 = function () { };
return D;
}());
var E = /** @class */ (function (_super) {
__extends(E, _super);
function E() {
return _super !== null && _super.apply(this, arguments) || this;
}
E.prototype.foo3 = function () { };
return E;
}(C));
var F = /** @class */ (function (_super) {
__extends(F, _super);
function F() {
return _super !== null && _super.apply(this, arguments) || this;
}
F.prototype.foo4 = function () { };
return F;
}(C));
var c, d, e, f;
var arr6 = [c, d]; // (C | D)[]
var arr7 = [c, d, e]; // (C | D)[]
var arr8 = [c, e]; // C[]
var arr9 = [e, f]; // (E|F)[]
|
