Typescript: How to extend two classes?

Question

I want to save my time and to reuse common code across classes which extends PIXI classes (a 2d webGl renderer library).

Object Interfaces:

Answer 1

A very hacky solution would be to loop through the class you want to inherit from adding the functions one by one to the new parent class

class ChildA {
    public static x = 5
}

class ChildB {
    public static y = 6
}

class Parent {}

for (const property in ChildA) {
    Parent[property] = ChildA[property]
}
for (const property in ChildB) {
    Parent[property] = ChildB[property]
}


Parent.x
// 5
Parent.y
// 6

All properties of ChildA and ChildB can now be accessed from the Parent class, however they will not be recognised meaning that you will receive warnings such as Property 'x' does not exist on 'typeof Parent'