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=== tests/cases/conformance/classes/mixinAbstractClasses.2.ts ===
interface Mixin {
mixinMethod(): void;
>mixinMethod : () => void
}
function Mixin<TBaseClass extends abstract new (...args: any) => any>(baseClass: TBaseClass): TBaseClass & (abstract new (...args: any) => Mixin) {
>Mixin : <TBaseClass extends abstract new (...args: any) => any>(baseClass: TBaseClass) => TBaseClass & (abstract new (...args: any) => Mixin)
>args : any
>baseClass : TBaseClass
>args : any
// error expected: A mixin class that extends from a type variable containing an abstract construct signature must also be declared 'abstract'.
class MixinClass extends baseClass implements Mixin {
>MixinClass : MixinClass
>baseClass : TBaseClass
mixinMethod() {
>mixinMethod : () => void
}
}
return MixinClass;
>MixinClass : { new (...args: any): MixinClass; prototype: Mixin<any>.MixinClass; } & TBaseClass
}
abstract class AbstractBase {
>AbstractBase : AbstractBase
abstract abstractBaseMethod(): void;
>abstractBaseMethod : () => void
}
const MixedBase = Mixin(AbstractBase);
>MixedBase : typeof AbstractBase & (abstract new (...args: any) => Mixin)
>Mixin(AbstractBase) : typeof AbstractBase & (abstract new (...args: any) => Mixin)
>Mixin : <TBaseClass extends abstract new (...args: any) => any>(baseClass: TBaseClass) => TBaseClass & (abstract new (...args: any) => Mixin)
>AbstractBase : typeof AbstractBase
// error expected: Non-abstract class 'DerivedFromAbstract' does not implement inherited abstract member 'abstractBaseMethod' from class 'AbstractBase & Mixin'.
class DerivedFromAbstract extends MixedBase {
>DerivedFromAbstract : DerivedFromAbstract
>MixedBase : AbstractBase & Mixin
}
// error expected: Cannot create an instance of an abstract class.
new MixedBase();
>new MixedBase() : any
>MixedBase : typeof AbstractBase & (abstract new (...args: any) => Mixin)
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