Paracetamol.js💊| #208: Explica este código JavaScript

const getName = (name) => {
  return new Promise ((resolve, reject) => {
    setTimeout(() => {
      resolve(name)
    }, 3000)
  })
}


const getAge = (age) => {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if (age < 18) reject(new Error(`${age} no es valido`))
    }, 2000)
  })
}


const counterFriends = (friends) => {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      resolve(friends.length)
    }, 5000)
  })
}

const getPromises = () => {
  const arr = [
        getName("Pepe"), 
        getAge(15), 
        counterFriends(["Ana", "Roberto", "Juan"])];
  return Promise.race(arr)
    .then((response) => {
      console.log(response)
    })
    .catch(err => console.log(err))
}

getPromises()