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=== tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithConstructSignaturesWithOptionalParameters.ts ===
// call signatures in derived types must have the same or fewer optional parameters as the base type
interface Base {
a: new () => number;
>a : new () => number
a2: new (x?: number) => number;
>a2 : new (x?: number) => number
>x : number
a3: new (x: number) => number;
>a3 : new (x: number) => number
>x : number
a4: new (x: number, y?: number) => number;
>a4 : new (x: number, y?: number) => number
>x : number
>y : number
a5: new (x?: number, y?: number) => number;
>a5 : new (x?: number, y?: number) => number
>x : number
>y : number
}
interface I1 extends Base {
a: new () => number; // ok, same number of required params
>a : new () => number
}
interface I2 extends Base {
a: new (x?: number) => number; // ok, same number of required params
>a : new (x?: number) => number
>x : number
}
interface I3 extends Base {
a: new (x: number) => number; // error, too many required params
>a : new (x: number) => number
>x : number
}
interface I4 extends Base {
a2: new () => number; // ok, same number of required params
>a2 : new () => number
}
interface I5 extends Base {
a2: new (x?: number) => number; // ok, same number of required params
>a2 : new (x?: number) => number
>x : number
}
interface I6 extends Base {
a2: new (x: number) => number; // ok, same number of params
>a2 : new (x: number) => number
>x : number
}
interface I7 extends Base {
a3: new () => number; // ok, fewer required params
>a3 : new () => number
}
interface I8 extends Base {
a3: new (x?: number) => number; // ok, fewer required params
>a3 : new (x?: number) => number
>x : number
}
interface I9 extends Base {
a3: new (x: number) => number; // ok, same number of required params
>a3 : new (x: number) => number
>x : number
}
interface I10 extends Base {
a3: new (x: number, y: number) => number; // error, too many required params
>a3 : new (x: number, y: number) => number
>x : number
>y : number
}
interface I11 extends Base {
a4: new () => number; // ok, fewer required params
>a4 : new () => number
}
interface I12 extends Base {
a4: new (x?: number, y?: number) => number; // ok, fewer required params
>a4 : new (x?: number, y?: number) => number
>x : number
>y : number
}
interface I13 extends Base {
a4: new (x: number) => number; // ok, same number of required params
>a4 : new (x: number) => number
>x : number
}
interface I14 extends Base {
a4: new (x: number, y: number) => number; // ok, same number of params
>a4 : new (x: number, y: number) => number
>x : number
>y : number
}
interface I15 extends Base {
a5: new () => number; // ok, fewer required params
>a5 : new () => number
}
interface I16 extends Base {
a5: new (x?: number, y?: number) => number; // ok, fewer required params
>a5 : new (x?: number, y?: number) => number
>x : number
>y : number
}
interface I17 extends Base {
a5: new (x: number) => number; // ok, all present params match
>a5 : new (x: number) => number
>x : number
}
interface I18 extends Base {
a5: new (x: number, y: number) => number; // ok, same number of params
>a5 : new (x: number, y: number) => number
>x : number
>y : number
}
|
