Passing more arguments to the super function.

class Person {
  dance() {
    const dances = [
      'waltz',
      'tango',
      'mambo',
      'foxtrot'
    ];
    console.log(`${this.name} is doing the ${dances[Math.floor(Math.random() * dances.length)]}!`);
  };
  constructor({ name, age, eyeColor} = {}) {
    this.name = name;
    this.age = age;
    this.eyeColor = eyeColor;
  }
}

class Student extends Person {
  dance (traditional){
    if(traditional){
     super.dance();
     return;
    }
    const dances = [
      'lyrical',
      'tap',
      'samba',
      'jazz'
    ];
    console.log(`${this.name} is doing the ${dances[Math.floor(Math.random() * dances.length)]}!`);
   }


  constructor({ name, age, interestLevel = 5 } = {} ) {
    super({name, age, eyeColor});
    this.name = name;
    this.age = age;
    this.interestLevel = interestLevel;
    this.grades = new Map;
  };
}

let stevenJ = new Student({ name: 'Steven', age: 22, eyeColor: 'blue'});
stevenJ.dance();
console.log(stevenJ.eyeColor)