How to tell `keyof MyClass.prototype` in TypeScript?

Question

In TypeScript I can define generic and force that in genericForObj passing only properties of a particular object.

class MyClass
{
  one(){};
  two(){};
}

function genericForObj<T, K extends keyof T>(obj: T, prop: K)
{

}

const obj = new MyClass;

genericForObj(obj, 'one'); // OK

genericForObj(MyClass, 'one');
// Error: Argument of type '"one"' is not
// assignable to parameter of type '"prototype"'.

How to tell keyof MyClass.prototype in generic function?

Answer 1

Thanks to @gcnew, the following genericForClass does exactly what I wanted:

class MyClass
{
  one(c: boolean){};
  two(){};
}

function genericForClass
<T extends Function, K extends keyof T['prototype']>
(classHandler: T, method: K)
{

}

genericForClass(MyClass, 'one') // OK
genericForClass(MyClass, 'fake') // Error

Answer 2

the code below returns all properties and methods of a class:

keyof typeof MyClass['prototype']