Is there a vowel in there.js

// DESCRIPTION:
// Given an array of numbers, check if any of the numbers are the character codes for lower case vowels (a, e, i, o, u).

// If they are, change the array value to a string of that vowel.

// Return the resulting array.

// -----My Solution-----
function isVow(a){
    return a.map(x => 'aeiou'.includes(String.fromCharCode(x)) ? String.fromCharCode(x): x)
  }