FrogToad.js

class Frog {
  constructor({ name, gender, weight }) {
    this.name = name
    this.gender = gender
    this.weight = weight
  }
  
  jump() {
    console.log('jumped')
  }
}

class Toad {
  constructor(habitat, frog) {
    this.habitat = habitat
    this.frog = frog
  }
}