Codecademy export

main.js

let input = 'a whale of a deal!';
const vowels = ['a', 'e', 'i', 'o', 'u'];

let resultArray = [];

for(let i = 0; i < input.length; i++){
  for(let j = 0; j < vowels.length; j++){
      if(input[i] === vowels[j]){
        if(input[i] === 'e'){
          resultArray.push('ee')
        }
        else if(input[i] === 'u'){
          resultArray.push('uu')
        }
        else{
          resultArray.push(input[i])
        }
      }
  }
}
console.log(resultArray.join('').toUpperCase());