No way to get constructor arguments for abstract class?

[Griffork]

TypeScript Version: 4.0.3

Search Terms:
Infer arguments from constructor of abstract class.

Code

I have the following class, I cannot get the constructor parameters via generic typing.

abstract class Test {
    constructor(public a: string, public b: number) {}
}

Abstract classes cannot be assigned to new:

type ObjectType<T> = T extends (new (...args: any[]) => infer C) ? C : never;
type ConstructArguments<T> = T extends (new (...args: infer C) => any) ? C : never;

declare function ClassWrapper<
	Class extends (new (...args: any[]) => any),
	Output extends ObjectType<Class>,
	ConstructorArgs extends ConstructArguments<Class>>
	(base: Class): (
			(new (...args: ConstructorArgs) => {c: string} & Output));

var test = ClassWrapper(Test); //Error about abstract class not being able to be assigned to new(): Test

Constructor arguments can not be inferred via crawling the prototype:

type AbstractConstructArguments<T> = T extends {prototype:{constructor: (...args: infer C)=>any}}?C: never;

var args: AbstractConstructArguments<Test>;  //args is never.

Expected behavior:
There should be a way to type the constructor arguments for an abstract class. Either the class is assignable to new or inferring the arguments from the constructor directly should result in valid arguments and not type never.

Actual behavior:
ClassWrapper(Test) throws an error.
AbstractConstructArguments always returns type never.

Playground Link

Related Issues:

https://stackoverflow.com/questions/57643184/infer-arguments-for-abstract-class-in-typescript

[RyanCavanaugh]

See #36392

[RyanCavanaugh]

Or #35576

[Griffork]

Thanks Ryan. I swear I searched for it, I think since I used the infer and arguments keywords those issues got buried in a bunch of unrelated stuff 😕