text: let message = 'your favorite color is ';
  
  let isEmpty = true;
  while (isEmpty) {
    let input = prompt('what is your favorite color?');
  
    if (input === null) {
      alert('there is no escape');
    } else if (input.length === 0) {
      alert('input cannot be empty');
    } else {
      message = message + input;
      isEmpty = false;
    }
  }
  
  alert(message);
  