fix: provide explicit type to data (nativescript-vue#305)

championswimmer · rigor789 · commit 438922835e51 · 2018-08-16T00:32:13.000+02:00
otherwise Typescrpit will complain in strict mode
diff --git a/index.d.ts b/index.d.ts
@@ -22,7 +22,7 @@ export interface NativeScriptVue<V = View> extends Vue {
     $navigateTo: navigateTo
     $navigateBack: () => void
 
-    $modal?: { close: (data?) => Promise<typeof data> };
+    $modal?: { close: (data?: any) => Promise<typeof data> };
 
     /**
      * Open a modal using a component
