docs: function setsOf(value, amount = 4, divider = ' ') {
    const num = parseInt(amount, 10);
  
    if (Number.isNaN(num) || typeof value !== 'string') {
      return '';
    }
  
    const regex = new RegExp('.{1,' + amount + '}', 'g');
    return value.match(regex).join(divider);
  }