=== 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)