reduce footprint and add notifications

lib/classes/VueApp.php

@@ -79,15 +79,20 @@ final class VueApp implements Stringable
 
     public function getTemplate(): Template
     {
+        $data = [
+            'components' => [
+                $this->base_component,
+                ...$this->components
+            ],
+        ];
+
+        if (count($this->stores) > 0) {
+            $data['stores'] = $this->stores;
+        }
+
         $template = $GLOBALS['template_factory']->open('vue-app.php');
         $template->attributes = [
-            'data-vue-app' => json_encode([
-                'components' => [
-                    $this->base_component,
-                    ...$this->components
-                ],
-                'stores' => $this->stores,
-            ]),
+            'data-vue-app' => json_encode($data),
             'is' => basename($this->base_component),
 
             ...$this->getPreparedProps(),
@@ -108,7 +113,13 @@ final class VueApp implements Stringable
 
     public function render(): string
     {
-        return $this->getTemplate()->render();
+        \NotificationCenter::postNotification('VueAppWillRender', $this);
+
+        $content = $this->getTemplate()->render();
+
+        \NotificationCenter::postNotification('VueAppDidRender', $this);
+
+        return $content;
     }
 
     public function __toString(): string