Fizzbuzz for JavaScript

fizzbuzz.js

function fizzbuzz (set) {
  
  var set = set ? set : [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
  var isValidSet = set.map((element) => {if (typeof element !== 'number') {return false} else return true}).indexOf(false) === -1 ? true : false
  var gotFizz = (n) => {if (n % 3 === 0) {return true} else return false}
  var gotBuzz = (n) => {if (n % 5 === 0) {return true} else return false}
  
  if (!Array.isArray(set)) return new Error('First argument must an array with "Number" elements')
  if (!isValidSet) return new Error('The elements of the first argument must all be "Numbers"')

  set.forEach((n) => {

    if (gotFizz(n) && gotBuzz(n)) return console.log('fizzbuzz')
    if (gotFizz(n)) return console.log('fizz')
    if (gotBuzz(n)) return console.log('buzz')
    else return console.log(n)
  })
}