function translatePigLatin(str) {
  if(str[0] === 'i' || str[0] === 'o' || str[0] === 'u' || str[0] === 'a' || str[0] === 'e' ){
    return str + 'way';
  }

  var wordArray = str.split('');
  var vowelIndex;

  function isVowel(element, index){
    vowelIndex = index;
    return element === 'i' || element === 'o' || element === 'u' || element === 'a' || element === 'e';
  }

  wordArray.some(isVowel);

  if(vowelIndex){
     return str.substr(vowelIndex) + str.substr(0, vowelIndex) + 'ay';
  }

}