Markdium-JavaScript - The prototype chain in depth

Markdium-JSX.jsx

Player {
  userName: "sag1v",
  score: 700,
  __proto__: Player.prototype {
    setScore: ƒ
  }
}

PaidPlayer {
  userName: "sarah",
  score: 900,
  balance: 5,
  __proto__: PaidPlayer.prototype:{
    setUserName: ƒ,
    __proto__: Player.prototype {
      setScore: ƒ
    }
  }
}