diff --git a/types/moonjs/index.d.ts b/types/moonjs/index.d.ts
index 13dcbbe04e..c003f7ad58 100644
--- a/types/moonjs/index.d.ts
+++ b/types/moonjs/index.d.ts
@@ -22,11 +22,11 @@ declare namespace Moon {
     }
 
     interface MoonConstructor {
-        new <Props extends string, Data, Methods>(options?: ConstructorOptions<Props, Data, Methods>): Instance<Data & Methods & Record<Props, any>>;
+        new <Props extends string = never, Data = {}, Methods = {}>(options?: ConstructorOptions<Props, Data, Methods>): Instance<Data & Methods & Record<Props, any>>;
     }
 
     interface MoonStatic extends MoonConstructor {
-        component<Props extends string, Data, Methods>(name: string, options: ComponentOptions<Props, Data, Methods>): MoonConstructor;
+        component<Props extends string = never, Data = {}, Methods = {}>(name: string, options: ComponentOptions<Props, Data, Methods>): MoonConstructor;
         config: MoonConfig;
         use(plugin: object): void;
         compile(template: string): void;
diff --git a/types/moonjs/moonjs-tests.ts b/types/moonjs/moonjs-tests.ts
index aa6527ea82..34d1d8d359 100644
--- a/types/moonjs/moonjs-tests.ts
+++ b/types/moonjs/moonjs-tests.ts
@@ -17,6 +17,7 @@ const count = app.get("count");
 count;                          // $ExpectType number
 app.get("increment")();         // $ExpectType void
 app.callMethod("increment");    // $ExpectType any
+app.get("blahblahblah");        // $ExpectError
 
 app.destroy();