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 (...args: any[]) => any; 

This is also called a newable type. However, I need a type signature for an abstract class (abstract constructor function). I understand it can be defined as having the type Function, but that is way too broad. Isn't there a more precise alternative?

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Edit:

To clarify what I mean, the following little snippet demonstrates the difference between an abstract constructor and a non-abstract constructor:

declare type ConstructorFunction = new (...args: any[]) => any;  abstract class Utilities {     ... }  var UtilityClass: ConstructorFunction = Utilities; // Error. 

Type 'typeof Utilities' is not assignable to type 'new (...args: any[]) => any'.

Cannot assign an abstract constructor type to a non-abstract constructor type.

Answer 1

Was just struggling with a similar problem myself, and this seems to work for me:

type Constructor<T> = Function & { prototype: T }