feat: Added app check methods

Author: seebeen

composer.json

@@ -1,6 +1,6 @@
 {
   "name": "x-wp/di",
-  "description": "Provides standardized way to declare and invoke WordPress hooks",
+  "description": "The dependency injection container for WordPress",
   "license": "GPL-2.0-only",
   "type": "library",
   "keywords": [

src/App_Factory.php

@@ -14,8 +14,9 @@
 /**
  * Create and manage DI containers.
  *
- * @method static Container create( array $config)                                                        Create a new container.
+ * @method static bool      has( string $id)                                                              Check if a container exists.
  * @method static Container get( string $id )                                                             Get a container instance.
+ * @method static Container create( array $config)                                                        Create a new container.
  * @method static void      extend( string $container, array $module, string $position, ?string $target ) Extend an application container definition.
  * @method static bool      decompile( string $id, bool $now )                                            Decompile a container.
  */
@@ -88,6 +89,16 @@ static function ( array $imports, string $classname ) use( $module, $position, $
         );
     }
 
+    /**
+     * Check if a container exists.
+     *
+     * @param  string $id Container ID.
+     * @return bool
+     */
+    protected function call_has( string $id ): bool {
+        return isset( $this->containers[ $id ] );
+    }
+
     /**
      * Get a container instance.
      *

src/Functions/xwp-di-container-fns.php

@@ -8,6 +8,16 @@
 
 use DI\Container;
 
+/**
+ * Check if a container exists.
+ *
+ * @param  string $container_id Container ID.
+ * @return bool
+ */
+function xwp_has( string $container_id ): bool {
+    return \XWP\DI\App_Factory::has( $container_id );
+}
+
 /**
  * Get a container by ID.
  *