https://www.hbauk.com/wp-content/uploads/civicrm/ext/sweetalert/js/crm-alert-frontend.js?r=wPlAlen_GB

1(function (CRM) {
2  /**
3   * Override the core CRM alert to use sweetalert if the notification
4   * container is not present
5   */
6
7  // backup the core function
8  CRM._alert = CRM.alert;
9
10  CRM.alert = function (text, title, type, options) {
11    if (CRM.$('#crm-notification-container').length) {
12      CRM._alert(text, title, type, options);
13    }
14    else {
15      Swal.fire({
16        icon: type,
17        html: text || '',
18        title: title || '',
19        theme: CRM.vars.sweetalert.darkMode,
20      });
21    }
22  };
23})(CRM);