Typescript mixin and how to use it.

Declaring mixin in typescript

type Constructor<T = {}> = new (...args: any[]) => T;

function Handler<BaseType extends Constructor>(TargetType: BaseType) {

return class extends TargetType {

isActivated = false;

};

}

class User {

name = ""

}

const i = Handler(User);

const idec = new i