fix-next: avoid circular reference (#6812)

tns-core-modules/application/application-common.ts

@@ -2,6 +2,7 @@
 require("globals");
 
 import { Observable, EventData } from "../data/observable";
+import { View } from "../ui/core/view";
 import {
     trace as profilingTrace,
     time,
@@ -35,7 +36,6 @@ export { Observable };
 import {
     AndroidApplication,
     CssChangedEventData,
-    getRootView,
     iOSApplication,
     LoadAppCSSEventData,
     UnhandledErrorEventData,
@@ -79,10 +79,10 @@ export function setApplication(instance: iOSApplication | AndroidApplication): v
     app = instance;
 }
 
-export function livesync(context?: HmrContext) {
+export function livesync(rootView: View, context?: HmrContext) {
     events.notify(<EventData>{ eventName: "livesync", object: app });
     const liveSyncCore = global.__onLiveSyncCore;
-    let reapplyAppCss = false
+    let reapplyAppCss = false;
 
     if (context) {
         const fullFileName = getCssFileName();
@@ -91,7 +91,6 @@ export function livesync(context?: HmrContext) {
         reapplyAppCss = extensions.some(ext => context.module === fileName.concat(ext));
     }
 
-    const rootView = getRootView();
     if (reapplyAppCss && rootView) {
         rootView._onCssStateChange();
     } else if (liveSyncCore) {

tns-core-modules/application/application.android.ts

@@ -217,7 +217,8 @@ global.__onLiveSync = function __onLiveSync(context?: HmrContext) {
         return;
     }
 
-    livesync(context);
+    const rootView = getRootView();
+    livesync(rootView, context);
 };
 
 function initLifecycleCallbacks() {

tns-core-modules/application/application.ios.ts

@@ -21,7 +21,7 @@ import { Frame, NavigationEntry } from "../ui/frame";
 import * as utils from "../utils/utils";
 import { profile, level as profilingLevel, Level } from "../profiling";
 
-// NOTE: UIResponder with implementation of window - related to https://github.com/NativeScript/ios-runtime/issues/430 
+// NOTE: UIResponder with implementation of window - related to https://github.com/NativeScript/ios-runtime/issues/430
 // TODO: Refactor the UIResponder to use Typescript extends when this issue is resolved:
 // https://github.com/NativeScript/ios-runtime/issues/1012
 var Responder = (<any>UIResponder).extend({
@@ -161,7 +161,7 @@ class IOSApplication implements IOSApplicationDefinition {
             this.setWindowContent(args.root);
         } else {
             this._window = UIApplication.sharedApplication.delegate.window;
-        }   
+        }
     }
 
     @profile
@@ -378,5 +378,6 @@ global.__onLiveSync = function __onLiveSync(context?: HmrContext) {
         return;
     }
 
-    livesync(context);
+    const rootView = getRootView();
+    livesync(rootView, context);
 }