refact(utils): Resolve circular dependency without duplicating any code

tns-core-modules/utils/mainthread-helper.android.ts

@@ -0,0 +1,10 @@
+export function dispatchToMainThread(func: () => void) {
+    new android.os.Handler(android.os.Looper.getMainLooper())
+        .post(new java.lang.Runnable({
+            run: func
+        }));
+}
+
+export function isMainThread(): Boolean {
+    return android.os.Looper.myLooper() === android.os.Looper.getMainLooper();
+}

tns-core-modules/utils/mainthread-helper.d.ts

@@ -0,0 +1,10 @@
+/**
+ * Dispatches the passed function for execution on the main thread
+ * @param func The function to execute on the main thread.
+ */
+export function dispatchToMainThread(func: Function);
+
+/**
+ * @returns Boolean value indicating whether the current thread is the main thread
+ */
+export function isMainThread(): boolean

tns-core-modules/utils/mainthread-helper.ios.ts

@@ -0,0 +1,7 @@
+export function dispatchToMainThread(func: () => void) {
+    NSOperationQueue.mainQueue.addOperationWithBlock(func);
+}
+
+export function isMainThread(): Boolean {
+    return NSThread.isMainThread;
+}

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

@@ -1,5 +1,7 @@
 import * as types from "./types";
-import { dispatchToMainThread, isMainThread } from "./utils"
+import { dispatchToMainThread, isMainThread } from "./mainthread-helper"
+
+export * from "./mainthread-helper"
 
 export const RESOURCE_PREFIX = "res://";
 export const FILE_PREFIX = "file:///";

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

@@ -372,14 +372,3 @@ Please ensure you have your manifest correctly configured with the FileProvider.
         return false;
     }
 }
-
-export function dispatchToMainThread(func: () => void) {
-    new android.os.Handler(android.os.Looper.getMainLooper())
-        .post(new java.lang.Runnable({
-            run: func
-        }));
-}
-
-export function isMainThread(): Boolean {
-    return android.os.Looper.myLooper() === android.os.Looper.getMainLooper();
-}

tns-core-modules/utils/utils.d.ts

@@ -4,6 +4,8 @@
 
 import { dip, px } from "../ui/core/view";
 
+export * from "./mainthread-helper"
+
 export const RESOURCE_PREFIX: string;
 export const FILE_PREFIX: string;
 
@@ -269,12 +271,6 @@ export function GC();
  */
 export function releaseNativeObject(object: any /*java.lang.Object | NSObject*/);
 
-/**
- * Dispatches the passed function for execution on the main thread
- * @param func The function to execute on the main thread.
- */
-export function dispatchToMainThread(func: Function);
-
 /**
  * Checks if the current thread is the main thread. Directly calls the passed function
  * if it is, or dispatches it to the main thread otherwise.
@@ -291,11 +287,6 @@ export function executeOnMainThread(func: Function);
  */
 export function mainThreadify(func: Function): (...args: any[]) => void
 
-/**
- * @returns Boolean value indicating whether the current thread is the main thread
- */
-export function isMainThread(): boolean
-
 /**
  * Returns true if the specified path points to a resource or local file.
  * @param path The path.

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

@@ -159,14 +159,6 @@ export function openUrl(location: string): boolean {
     return false;
 }
 
-export function dispatchToMainThread(func: () => void) {
-    NSOperationQueue.mainQueue.addOperationWithBlock(func);
-}
-
-export function isMainThread(): Boolean {
-    return NSThread.isMainThread;
-}
-
 class UIDocumentInteractionControllerDelegateImpl extends NSObject implements UIDocumentInteractionControllerDelegate {
     public static ObjCProtocols = [UIDocumentInteractionControllerDelegate];