117 - Composibility - javascript

[jsartisan]

index.js

function User(name, birthday) {
  this.name = name;
  this.birthday = birthday;
}

Object.defineProperty(User.prototype, "age", {
  get: function () {
    let todayYear = new Date().getFullYear();

    return todayYear - this.birthday.getFullYear();
  },
});

export { User };