renaming.js

// Say we have this code
const person = new Person({age: 33});
const age = ageOf(person) + 1;
console.log(age); // => ?????


























// With out looking we probably think ageOf is like:
function ageOf(person) {
  return person.age;
}




























// But it's all like:
function ageOf(person) {
  return person.age + ' years old';
}

/**
 * Because,
 * product request that somewhere on page was:
 *  Age: 33
 *
 * and they wanted:
 *  Age: 33 years old
 *
 * So this actually is:
 */
const person = new Person({age: 33});
const age = getAge(person) + 1;
console.log(age); // => '34 years old1'


// Refactor
function getAge() { }

// becomes
function getHumanReadableAge() { }