117 - Composibility - javascript

[jsartisan]

index.js

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

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

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

export { User };