fix

src/app-context/app-context.ts

@@ -225,8 +225,20 @@ export class AppContextCore<Cur = Empty, Req = Empty> {
     return inst as any;
   }
 
-  async getAsync<R>(cls: AppServiceClass<Cur, Req, any, R>): Promise<R> {
-    const key = cls as unknown as AnyClass;
+  async getAsync<R>(
+    cls:
+      | AppServiceClass<Cur, Req, any, R>
+      | (() => AppServiceClass<Cur, Req, any, R>),
+  ): Promise<R> {
+    let key = cls as unknown as AnyClass;
+    if (
+      !this.registry.has(key) &&
+      typeof cls === 'function' &&
+      !(cls as any).prototype
+    ) {
+      key = (cls as () => AppServiceClass<Cur, Req, any, R>)() as AnyClass;
+    }
+
     if (!this.registry.has(key)) {
       throw new Error(`Service not provided: ${cls.name}`);
     }