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=== tests/cases/conformance/types/intersection/intersectionsAndEmptyObjects.ts ===
// Empty object type literals are removed from intersections types
// that contain other object types
type A = { a: number };
>A : A
>a : number
type B = { b: string };
>B : B
>b : string
type C = {};
>C : C
let x01: A & B;
>x01 : A & B
let x02: A & C;
>x02 : A
let x03: B & C;
>x03 : B
let x04: A & B & C;
>x04 : A & B
let x05: string & C;
>x05 : string & C
let x06: C & string;
>x06 : C & string
let x07: C;
>x07 : C
let x08: C & {};
>x08 : C
let x09: {} & A & {} & B & {} & C & {};
>x09 : A & B
interface D {}
interface E {}
let x10: A & D;
>x10 : A & D
let x11: C & D;
>x11 : D
let x12: A & B & C & D;
>x12 : A & B & D
let x13: D & E;
>x13 : D & E
let x14: A & B & C & D & E;
>x14 : A & B & D & E
// Repro from #20225
type Dictionary = { [name: string]: string };
>Dictionary : Dictionary
>name : string
const intersectDictionaries = <F1 extends Dictionary, F2 extends Dictionary>(
>intersectDictionaries : <F1 extends Dictionary, F2 extends Dictionary>(d1: F1, d2: F2) => F1 & F2
><F1 extends Dictionary, F2 extends Dictionary>( d1: F1, d2: F2,): F1 & F2 => Object.assign({}, d1, d2) : <F1 extends Dictionary, F2 extends Dictionary>(d1: F1, d2: F2) => F1 & F2
d1: F1,
>d1 : F1
d2: F2,
>d2 : F2
): F1 & F2 => Object.assign({}, d1, d2);
>Object.assign({}, d1, d2) : {} & F1 & F2
>Object.assign : { <T, U>(target: T, source: U): T & U; <T, U, V>(target: T, source1: U, source2: V): T & U & V; <T, U, V, W>(target: T, source1: U, source2: V, source3: W): T & U & V & W; (target: object, ...sources: any[]): any; }
>Object : ObjectConstructor
>assign : { <T, U>(target: T, source: U): T & U; <T, U, V>(target: T, source1: U, source2: V): T & U & V; <T, U, V, W>(target: T, source1: U, source2: V, source3: W): T & U & V & W; (target: object, ...sources: any[]): any; }
>{} : {}
>d1 : F1
>d2 : F2
const testDictionary = <T extends Dictionary>(_value: T) => { };
>testDictionary : <T extends Dictionary>(_value: T) => void
><T extends Dictionary>(_value: T) => { } : <T extends Dictionary>(_value: T) => void
>_value : T
const d1 = {};
>d1 : {}
>{} : {}
testDictionary(d1);
>testDictionary(d1) : void
>testDictionary : <T extends Dictionary>(_value: T) => void
>d1 : {}
const d2 = intersectDictionaries(d1, d1);
>d2 : {}
>intersectDictionaries(d1, d1) : {}
>intersectDictionaries : <F1 extends Dictionary, F2 extends Dictionary>(d1: F1, d2: F2) => F1 & F2
>d1 : {}
>d1 : {}
testDictionary(d2);
>testDictionary(d2) : void
>testDictionary : <T extends Dictionary>(_value: T) => void
>d2 : {}
const d3 = {
>d3 : { s: string; }
>{ s: '',} : { s: string; }
s: '',
>s : string
>'' : ""
};
testDictionary(d3);
>testDictionary(d3) : void
>testDictionary : <T extends Dictionary>(_value: T) => void
>d3 : { s: string; }
const d4 = intersectDictionaries(d1, d3);
>d4 : { s: string; }
>intersectDictionaries(d1, d3) : { s: string; }
>intersectDictionaries : <F1 extends Dictionary, F2 extends Dictionary>(d1: F1, d2: F2) => F1 & F2
>d1 : {}
>d3 : { s: string; }
testDictionary(d4);
>testDictionary(d4) : void
>testDictionary : <T extends Dictionary>(_value: T) => void
>d4 : { s: string; }
const d5 = intersectDictionaries(d3, d1);
>d5 : { s: string; }
>intersectDictionaries(d3, d1) : { s: string; }
>intersectDictionaries : <F1 extends Dictionary, F2 extends Dictionary>(d1: F1, d2: F2) => F1 & F2
>d3 : { s: string; }
>d1 : {}
testDictionary(d5);
>testDictionary(d5) : void
>testDictionary : <T extends Dictionary>(_value: T) => void
>d5 : { s: string; }
const d6 = intersectDictionaries(d3, d3);
>d6 : { s: string; }
>intersectDictionaries(d3, d3) : { s: string; }
>intersectDictionaries : <F1 extends Dictionary, F2 extends Dictionary>(d1: F1, d2: F2) => F1 & F2
>d3 : { s: string; }
>d3 : { s: string; }
testDictionary(d6);
>testDictionary(d6) : void
>testDictionary : <T extends Dictionary>(_value: T) => void
>d6 : { s: string; }
// Repro from #27044
type choices<IChoiceList extends {
>choices : choices<IChoiceList>
[key: string]: boolean;
>key : string
}> = IChoiceList & {
shoes:boolean;
>shoes : boolean
food:boolean;
>food : boolean
};
type IMyChoiceList = {
>IMyChoiceList : IMyChoiceList
car: true
>car : true
>true : true
};
type IUnknownChoiceList = {};
>IUnknownChoiceList : IUnknownChoiceList
var defaultChoices: choices<{}>;
>defaultChoices : { shoes: boolean; food: boolean; }
var defaultChoicesAndEmpty: choices<{} & {}>;
>defaultChoicesAndEmpty : { shoes: boolean; food: boolean; }
var myChoices: choices<IMyChoiceList>;
>myChoices : choices<IMyChoiceList>
var myChoicesAndEmpty: choices<IMyChoiceList & {}>;
>myChoicesAndEmpty : choices<IMyChoiceList>
var unknownChoices: choices<IUnknownChoiceList>;
>unknownChoices : { shoes: boolean; food: boolean; }
var unknownChoicesAndEmpty: choices<IUnknownChoiceList & {}>;
>unknownChoicesAndEmpty : { shoes: boolean; food: boolean; }
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