fix: add app.ts

Author: NickIliev

app/app.js renamed to app/app.ts

@@ -1,15 +1,20 @@
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
-const application = require("tns-core-modules/application");
-const platformModule = require("tns-core-modules/platform");
-const applicationSettingsModule = require("tns-core-modules/application-settings");
+/*
+In NativeScript, the app.js file is the entry point to your application.
+You can use this file to perform app-level initialization, but the primary
+purpose of the file is to pass control to the app’s first module.
+*/
+import * as application from "tns-core-modules/application";
+import * as platformModule from "tns-core-modules/platform";
+import * as applicationSettingsModule from"tns-core-modules/application-settings";
+import {Frame} from "tns-core-modules/ui/frame";
 const deepLinkDataModule = require("./shared/deep-link-data");
 if (platformModule.isIOS) {
     const mydelegate = require("./delegate/my-delegate");
     application.ios.delegate = mydelegate.MyDelegate;
 }
+
 function launchExample() {
-    const rootView = application.getRootView();
+    const rootView: Frame = <Frame> application.getRootView();
     if (applicationSettingsModule.hasKey("gotoexample")) {
         const value = applicationSettingsModule.getString("gotoexample");
         if (value !== "") {
@@ -21,14 +26,17 @@ function launchExample() {
         }
     }
 }
-application.on(application.resumeEvent, function (args) {
+application.on(application.resumeEvent, (args) => {
     if (args.android) {
         const dld = new deepLinkDataModule.DeepLinkData("", args.android);
         launchExample();
-    }
-    else if (args.ios) {
+    } else if (args.ios) {
         launchExample();
     }
 });
-
 application.run({ moduleName: "app-root" });
+
+/*
+Do not place any code after the application has been started as it will not
+be executed on iOS.
+*/