Function computeAriaValueNow

src/role-helpers.js:346–349

* @param {Element} element - * @returns {number | undefined} -

(element)

 * @returns {number | undefined} -
 */
function computeAriaValueNow(element) {
  const valueNow = element.getAttribute('aria-valuenow')
  return valueNow === null ? undefined : +valueNow
}

/**
 * @param {Element} element -