drupal/core/misc/jquery.tabbable.shim.js

/**
* DO NOT EDIT THIS FILE.
* See the following change record for more information,
* https://www.drupal.org/node/2815083
* @preserve
**/

(function ($, Drupal, _ref) {
  var isTabbable = _ref.isTabbable;
  $.extend($.expr[':'], {
    tabbable: function tabbable(element) {
      Drupal.deprecationError({
        message: 'The :tabbable selector is deprecated in Drupal 9.2.0 and will be removed in Drupal 10.0.0. Use the core/tabbable library instead. See https://www.drupal.org/node/3183730'
      });

      if (element.tagName === 'SUMMARY' || element.tagName === 'DETAILS') {
        var tabIndex = element.getAttribute('tabIndex');

        if (tabIndex === null || tabIndex < 0) {
          return false;
        }
      }

      return isTabbable(element);
    }
  });
})(jQuery, Drupal, window.tabbable);