function countVowels(text: string): number {

  let counter : number = 0;
  let textDividedInArray : string[] = [...text];

  for(let i = 0; i <= text.length; i++){
    if(textDividedInArray[i] === "A" || textDividedInArray[i] === "a"){
      counter++;
    }
    if(textDividedInArray[i] === "E" || textDividedInArray[i] === "e"){
counter++;
    }
    if(textDividedInArray[i] === "I" || textDividedInArray[i] === "i"){
counter++;
    }
    if(textDividedInArray[i] === "O" || textDividedInArray[i] === "o"){
counter++;
    }
    if(textDividedInArray[i] === "U" || textDividedInArray[i] === "u"){
counter++;
    }
  }

  return counter;
}

// No modificar: necesario para evaluar el resultado.
export { countVowels };