Issue #3331032: Add support for Drupal 10

assets/js/io-builder.js

-(function ($, Drupal, drupalSettings) {
+(function ($, Drupal, drupalSettings, once) {
   Drupal.behaviors.ioBuilder = {
 
     /**
@@ -24,8 +24,7 @@
         $panel = $(context);
       }
 
-      $panel = $panel.once('panel_init');
-
+      $(once('panel_init', $panel));
       $panel.find('.close, .io-builder--panel__overlay').on('click', function() {
         $(this).closest('.io-builder--panel').remove();
       });
@@ -41,7 +40,7 @@
      */
     attachActionListeners: function (context, settings) {
       var self = this;
-      var $actions = $('body').find('a[data-io-builder-action="ajax_action"]').once('ajax_action_init');
+      var $actions = $(once('ajax_action_init', $('body').find('a[data-io-builder-action="ajax_action"]')));
 
       $actions.on('click', function(e) {
         e.preventDefault();
@@ -144,4 +143,4 @@
     }
 
   };
-})(jQuery, Drupal, drupalSettings);
+})(jQuery, Drupal, drupalSettings, once);