PB-166: Page Builder doesn't implement destroy method

Author: omiroshnichenko

app/code/Magento/PageBuilder/view/adminhtml/web/js/content-type.js

@@ -209,6 +209,12 @@ define([
                     this.transition(true);
                 }.bind(this));
             }.bind(this));
+        },
+
+        /** @inheritdoc */
+        destroy: function () {
+            this._super();
+            this.pageBuilder.destroy();
         }
     });
 });

app/code/Magento/PageBuilder/view/adminhtml/web/js/content-type/row/preview.js

@@ -47,9 +47,9 @@ export default class ContentType<P extends Preview = Preview, M extends Master =
     public destroy(): void {
         const params = {
             contentType: this,
-            index: (this.parentContentType as ContentTypeCollectionInterface)
-                .getChildren()
-                .indexOf(this),
+            index: this.parentContentType ?
+                (this.parentContentType as ContentTypeCollectionInterface).getChildren().indexOf(this) :
+                null,
             parentContentType: this.parentContentType,
             stageId: this.stageId,
         };

app/code/Magento/PageBuilder/view/adminhtml/web/js/form/element/wysiwyg.js

@@ -151,6 +151,9 @@ export default class Preview extends PreviewCollection {
      */
     public destroy(): void {
         super.destroy();
-        jarallax(this.element, "destroy");
+
+        if (this.element) {
+            jarallax(this.element, "destroy");
+        }
     }
 }

app/code/Magento/PageBuilder/view/adminhtml/web/js/page-builder.js

@@ -52,6 +52,13 @@ export default class PageBuilder implements PageBuilderInterface {
         this.initListeners();
     }
 
+    /**
+     * Destroy rootContainer instance.
+     */
+    public destroy() {
+        this.stage.rootContainer.destroy();
+    }
+
     /**
      * Init listeners.
      */