Abstract constructor type in TypeScript

Question

The type signature for a non-abstract class (non-abstract constructor function) in TypeScript is the following:

declare type ConstructorFunction = new (...ar         


        

Answer 1

The whole point with abstract classes (in OO in general) is that you can not instantiate them, you need a concrete non-abstract implementation.

I assume that you want to have different implementations to that abstract class and want to be able to receive one of those implementations (as a parameter or something of the likes).
If that's the case, then maybe this might solve your problem:

declare type ConstructorFunction = new (...args: any[]) => T;

abstract class Utilities { }

class MyUtilities extends Utilities { }

var UtilityClass: ConstructorFunction = MyUtilities;