Wzorzec Factory functions

function playerFactory(name) {
  function getName() {
    return name
  }
  return {getName}
}

function teamFactory(name){
  let players = [];

  function addPlayer(player){
      players.push(player);
    return players;
  }

  function getName(){
    return name;
  }

  function getPlayers(){
    return players;
  }

  return { addPlayer, getName, getPlayers }
}

const sunil = playerFactory("Sunil")
console.log('sunil', sunil.getName())
console.log('sunil.name', sunil.name) // undefined, brak dostepu, to głowna roznica miedzy uzywania factory functions i constructor functions w klasach
// nie mozemy rowniez update'owac player.name.

const chicagoBulls = teamFactory("Chicago Bulls")
chicagoBulls.addPlayer("Jordan")
chicagoBulls.addPlayer("Rodman")
chicagoBulls.addPlayer("Pippen")

console.log('chicagoBulls', chicagoBulls.getPlayers())

// głowny powod wykorzystywania fabryki: "get object to use it only"