es6-part4.js

(() => {
  'use script';

  class Monster {
    constructor(options = {}) {
      this.health = 100;
      this.name = options.name;
    }

    soigner() {
      this.health += 10;
    }
  }

  class MiniMonster extends Monster {
    constructor(options = {}) {
      super(options);
      this.health = 50;
    }

    soigner() {
      this.health += 5;
    }
  }

  module.exports = {
    Monster: Monster,
    MiniMonster: MiniMonster
  };
})();