diff --git a/src/Controller/Component.php b/src/Controller/Component.php
index 124d4e5..7bf752d 100644
--- a/src/Controller/Component.php
+++ b/src/Controller/Component.php
@@ -479,7 +479,9 @@ class Component
      * @param array $shim
      */
     function addRequireJsPath($name, $path, $shim = null): void {
-        $this->site->addRequireJsPath($name, $path, $shim);
+        if ($this->site) {
+            $this->site->addRequireJsPath($name, $path, $shim);
+        }
     }
 
     /**
diff --git a/src/File.php b/src/File.php
index 8ee2eae..5898a83 100644
--- a/src/File.php
+++ b/src/File.php
@@ -6,14 +6,34 @@ use Exception;
 class File {
     /**
      * @param string $filename
-     * @return string
      * @throws Exception
      */
-    static function getContents($filename) {
+    static function getContents(string $filename): string {
         $buffer = @file_get_contents($filename);
         if ($buffer !== false) {
            return $buffer;
         }
         throw new Exception("Unable to read file: " . $filename);
     }
+
+
+    /**
+     * @param string $filename
+     * @throws Exception
+     */
+    static function getJson(string $filename, bool|null $associative = null): mixed {
+        if (!file_exists($filename)) {
+            return throw new \Exception("File not exist: " . $filename);
+        }
+        $json = @file_get_contents($filename);
+        if ($json === false) {
+            throw new \Exception("Unable to read file: " . $filename);
+        }
+        $file = json_decode($json, $associative);
+
+        if (is_null($file)) {
+            throw new \Exception("Unable decoding json file: " . $filename);
+        }
+        return $file;
+    }
 }