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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
//// [tests/cases/conformance/types/intersection/intersectionsAndEmptyObjects.ts] ////
//// [intersectionsAndEmptyObjects.ts]
// Empty object type literals are removed from intersections types
// that contain other object types
type A = { a: number };
type B = { b: string };
type C = {};
let x01: A & B;
let x02: A & C;
let x03: B & C;
let x04: A & B & C;
let x05: string & C;
let x06: C & string;
let x07: C;
let x08: C & {};
let x09: {} & A & {} & B & {} & C & {};
interface D {}
interface E {}
let x10: A & D;
let x11: C & D;
let x12: A & B & C & D;
let x13: D & E;
let x14: A & B & C & D & E;
// Repro from #20225
type Dictionary = { [name: string]: string };
const intersectDictionaries = <F1 extends Dictionary, F2 extends Dictionary>(
d1: F1,
d2: F2,
): F1 & F2 => Object.assign({}, d1, d2);
const testDictionary = <T extends Dictionary>(_value: T) => { };
const d1 = {};
testDictionary(d1);
const d2 = intersectDictionaries(d1, d1);
testDictionary(d2);
const d3 = {
s: '',
};
testDictionary(d3);
const d4 = intersectDictionaries(d1, d3);
testDictionary(d4);
const d5 = intersectDictionaries(d3, d1);
testDictionary(d5);
const d6 = intersectDictionaries(d3, d3);
testDictionary(d6);
// Repro from #27044
type choices<IChoiceList extends {
[key: string]: boolean;
}> = IChoiceList & {
shoes:boolean;
food:boolean;
};
type IMyChoiceList = {
car: true
};
type IUnknownChoiceList = {};
var defaultChoices: choices<{}>;
var defaultChoicesAndEmpty: choices<{} & {}>;
var myChoices: choices<IMyChoiceList>;
var myChoicesAndEmpty: choices<IMyChoiceList & {}>;
var unknownChoices: choices<IUnknownChoiceList>;
var unknownChoicesAndEmpty: choices<IUnknownChoiceList & {}>;
// Repro from #38672
type Foo1 = { x: string } & { [x: number]: Foo1 };
type Foo2 = { x: string } & { [K in number]: Foo2 };
// Repro from #40239
declare function mock<M>(_: Promise<M>): {} & M;
mock(import('./ex'))
//// [ex.d.ts]
export {}
//// [intersectionsAndEmptyObjects.js]
// Empty object type literals are removed from intersections types
// that contain other object types
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
let x01;
let x02;
let x03;
let x04;
let x05;
let x06;
let x07;
let x08;
let x09;
let x10;
let x11;
let x12;
let x13;
let x14;
const intersectDictionaries = (d1, d2) => Object.assign({}, d1, d2);
const testDictionary = (_value) => { };
const d1 = {};
testDictionary(d1);
const d2 = intersectDictionaries(d1, d1);
testDictionary(d2);
const d3 = {
s: '',
};
testDictionary(d3);
const d4 = intersectDictionaries(d1, d3);
testDictionary(d4);
const d5 = intersectDictionaries(d3, d1);
testDictionary(d5);
const d6 = intersectDictionaries(d3, d3);
testDictionary(d6);
var defaultChoices;
var defaultChoicesAndEmpty;
var myChoices;
var myChoicesAndEmpty;
var unknownChoices;
var unknownChoicesAndEmpty;
mock(Promise.resolve().then(() => __importStar(require('./ex'))));
|
