diff --git a/src/global.d.ts b/src/global.d.ts
index 2bfe70f..fa50669 100644
--- a/src/global.d.ts
+++ b/src/global.d.ts
@@ -1 +1,8 @@
-/// <reference types="@sveltejs/kit" />
\ No newline at end of file
+/// <reference types="@sveltejs/kit" />
+
+declare namespace App {
+    interface Error {
+        message: string;
+        code: string;
+    }
+}
\ No newline at end of file