StarWars.js

(() => { 
  const han = {firstname: "Han", lastname: "Solo"};
  const luke = {firstname: "Luke", lastname: "Skywalker"};
  const leia = {firstname: "Leia", lastname: "Organa"};
  const obi = {firstname: "Obi", lastname: "Wan"};
  const yoda = {firstname: "", lastname: "Yoda"};
  const people = [
    han, luke, leia, obi, 
    yoda, luke, leia, obi 
  ];
  const getName = (person) => person.lastname;
  console.time("engine");
  for(var i = 0; i < 1000 * 1000 * 1000; i++) { 
    getName(people[i & 7]); 
  }
  console.timeEnd("engine"); 
})();