class Person {
  constructor(props){
    this.personalData = props
  }
  
  isItYourFavoriteLanguage(lang){
    return this.personalData.lang === lang
  }
  
  sayHi(){
    alert('Hello word!!!')
  }
}

const aboutPerson = (person) => {
  if(person.doYouLike("JavaScript") === true) return person.sayHi()
};

const me = new Person({
  nick: 'Dre$ha',
  lang: 'JavaScript'
});

aboutPerson(me);