I'm, going to say we have feature parity for Android and IOS as now they both Error the same way!

Waiting on Eddy to Update the Demo's Cloud Functions to a onCall request and then we will see if it works as it should!

Author: Brendan Ingham

demo/app/main-view-model.ts

@@ -209,7 +209,7 @@ export class HelloWorldModel extends Observable {
     .catch((e) => {
       alert({
         title: "An Error Occurred",
-        message: e.message,
+        message: e,
         okButtonText: "OK, thanks"
       });
     });

demo/firebase.nativescript.json

@@ -1,6 +1,6 @@
 {
     "external_push_client_only": false,
-    "using_ios": false,
+    "using_ios": true,
     "using_android": true,
     "firestore": true,
     "realtimedb": true,

demo/package.json

@@ -1,18 +1,18 @@
 {
   "nativescript": {
     "id": "org.nativescript.firebasedemo",
-    "tns-ios": {
-      "version": "4.2.0"
-    },
     "tns-android": {
-      "version": "4.2.0"
+      "version": "4.3.0-2018-09-21-01"
+    },
+    "tns-ios": {
+      "version": "4.3.0-2018-09-19-01"
     }
   },
   "dependencies": {
-    "nativescript-plugin-firebase": "7.0.1",
+    "nativescript-plugin-firebase": "file:../publish/package/nativescript-plugin-firebase-7.0.1.tgz",
     "nativescript-theme-core": "^1.0.4",
     "nativescript-unit-test-runner": "^0.3.4",
-    "tns-core-modules": "~4.2.0"
+    "tns-core-modules": "^4.3.0-2018-09-20-01"
   },
   "devDependencies": {
     "@types/jasmine": "~2.8.0",

src/functions/functions.ios.ts

@@ -1,19 +1,45 @@
 import {HttpsCallable} from './functions';
+import { firebaseUtils } from '../utils';
 
 
 export function httpsCallable< I = {}, O = {} >( functionName: string ): HttpsCallable<I, O> {
 
     const functions = FIRFunctions.functions();
 
     return (data: I ) => new Promise((resolve, reject) => {
-        functions.HTTPSCallableWithName(functionName).callWithObjectCompletion(data, (result: FIRHTTPSCallableResult, err: NSError) => {
-            if ( err ) {
-                if ( err.domain === FIRFunctionsErrorDomain ) {
-                    const message = err.localizedDescription;
-                    reject( message );
+
+        const callable = functions.HTTPSCallableWithName(functionName);
+
+        if ( data ) {
+            callable.callWithObjectCompletion(data, (result: FIRHTTPSCallableResult, err: NSError) => {
+                if ( err ) {
+                    if ( err.domain === FIRFunctionsErrorDomain ) {
+                        const message = err.localizedDescription;
+                        reject( message );
+                    }
+
+                    reject( err.localizedDescription );
+                }
+
+                if ( result ) {
+                    console.dir(result);
+                    resolve(result.data as O);
+                }
+            });
+        } else {
+            callable.callWithCompletion((result: FIRHTTPSCallableResult, err: NSError) => {
+                if ( err ) {
+                    if ( err.domain === FIRFunctionsErrorDomain ) {
+                        const message = err.localizedDescription;
+                        reject( message );
+                    }
+                    reject( err.localizedDescription );
+                }
+                if ( result ) {
+                    console.dir(result);
+                    resolve(result.data as O);
                 }
-            }
-            resolve(result.data as O);
-        });
+            });
+        }
     });
 }