getActiveOption(list) {
    const activeOption = list.getElementsByClassName('active-option')[0]
    if (activeOption && activeOption.style.display !== 'none') {
      return activeOption
    }
    return null
  }
Returns first option from autocomplete list with 'active-option' class
@param {Object} list - list of autocomplete options
@return {Object} first list option with 'active-option' class