clearlinux.github.io/core/themes/stable/js/ajax.js

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

(function (Drupal) {
  Drupal.theme.ajaxProgressBar = function ($element) {
    return $element.addClass('ajax-progress ajax-progress-bar');
  };
})(Drupal);