Node.js如何实现多态？

class Animal {
  makeSound() {
    // 空方法，子类需要重写
  }
}

class Dog extends Animal {
  makeSound() {
    console.log('汪汪汪');
  }
}

class Cat extends Animal {
  makeSound() {
    console.log('喵喵喵');
  }
}

function makeSound(animal) {
  animal.makeSound();
}

const dog = new Dog();
const cat = new Cat();

makeSound(dog); // 输出：汪汪汪
makeSound(cat); // 输出：喵喵喵

interface SoundMaker {
  makeSound(): void;
}

class Dog implements SoundMaker {
  makeSound() {
    console.log('汪汪汪');
  }
}

class Cat implements SoundMaker {
  makeSound() {
    console.log('喵喵喵');
  }
}

function makeSound(soundMaker: SoundMaker) {
  soundMaker.makeSound();
}

const dog = new Dog();
const cat = new Cat();

makeSound(dog); // 输出：汪汪汪
makeSound(cat); // 输出：喵喵喵