https://www.usa.gov/modules/contrib/uswds_ckeditor_integration/js/aftermarket/uswds_accordion.js?tm5lbg

1(function ($, Drupal) {
2  Drupal.behaviors.uswds_ckeditor_integration_accordion = {
3    attach(context, settings) {
4      // Seems to be a bug in ckeditor5 using buttons and maintaining text
5      // See https://github.com/ckeditor/ckeditor5/issues/13268
6      $('.text-formatted div.usa-accordion__button').each(function () {
7        const outer = this.outerHTML;
8
9        // Replace opening tag
10        let regex = new RegExp(`<${this.tagName}`, 'i');
11        let newTag = outer.replace(regex, '<button');
12
13        // Replace closing tag
14        regex = new RegExp(`</${this.tagName}`, 'i');
15        newTag = newTag.replace(regex, '</button');
16
17        $(this).replaceWith(newTag);
18      });
19
20      let $containerCounter = 0;
21      $('main .text-formatted .usa-accordion').each(function () {
22        let $itemCounter = 0;
23        $('.usa-accordion__button', this).each(function () {
24          if (!$(this).attr('aria-controls')) {
25            $(this).attr('aria-controls', `${$containerCounter}-${$itemCounter}`);
26            $itemCounter++;
27          }
28        });
29
30        $itemCounter = 0;
31        $('.usa-accordion__content', this).each(function () {
32          if (!$(this).attr('id')) {
33            $(this).attr('id', `${$containerCounter}-${$itemCounter}`);
34            $itemCounter++;
35          }
36        });
37
38        $containerCounter++;
39      });
40    },
41  };
42})(jQuery, Drupal);