Another way to define route properties?

src/Navigation.js

@@ -3,6 +3,12 @@ import platformSpecific from './platformSpecific';
 import Screen from './Screen';
 
 const registeredScreens = {};
+const _routeResolver = null;
+
+function resolveRoute(params) {
+  if (!_routeResolver) return params;
+  return _routeResolver(params);
+}
 
 function registerScreen(screenID, generator) {
   registeredScreens[screenID] = generator;
@@ -67,12 +73,23 @@ function dismissModal(params = {}) {
   return platformSpecific.dismissModal(params);
 }
 
+function startTabBasedApp(params) {
+  if (params.routeResolver) _routeResolver = params.routeResolver;
+  return platformSpecific.startTabBasedApp(params);
+}
+
+function startSingleScreenApp(params) {
+  if (params.routeResolver) _routeResolver = params.routeResolver;
+  return platformSpecific.startSingleScreenApp(params);
+}
+
 export default {
+  resolveRoute,
   registerScreen,
   getRegisteredScreen,
   registerComponent,
   showModal,
   dismissModal,
-  startTabBasedApp: platformSpecific.startTabBasedApp,
-  startSingleScreenApp: platformSpecific.startSingleScreenApp
+  startTabBasedApp,
+  startSingleScreenApp
 }

src/Screen.js

@@ -12,31 +12,31 @@ class Navigator {
     this.navigatorEventSubscription = null;
   }
   push(params = {}) {
-    return platformSpecific.navigatorPush(this, params);
+    return platformSpecific.navigatorPush(this, Navigation.resolveRoute(params));
   }
   pop(params = {}) {
-    return platformSpecific.navigatorPop(this, params);
+    return platformSpecific.navigatorPop(this, Navigation.resolveRoute(params));
   }
   popToRoot(params = {}) {
-    return platformSpecific.navigatorPopToRoot(this, params);
+    return platformSpecific.navigatorPopToRoot(this, Navigation.resolveRoute(params));
   }
   resetTo(params = {}) {
-    return platformSpecific.navigatorResetTo(this, params);
+    return platformSpecific.navigatorResetTo(this, Navigation.resolveRoute(params));
   }
   showModal(params = {}) {
-    return Navigation.showModal(params);
+    return Navigation.showModal(Navigation.resolveRoute(params));
   }
   dismissModal(params = {}) {
-    return Navigation.dismissModal(params);
+    return Navigation.dismissModal(Navigation.resolveRoute(params));
   }
   setButtons(params = {}) {
-    return platformSpecific.navigatorSetButtons(this, this.navigatorEventID, params);
+    return platformSpecific.navigatorSetButtons(this, this.navigatorEventID, Navigation.resolveRoute(params));
   }
   setTitle(params = {}) {
-    return platformSpecific.navigatorSetTitle(this, params);
+    return platformSpecific.navigatorSetTitle(this, Navigation.resolveRoute(params));
   }
   toggleDrawer(params = {}) {
-    return platformSpecific.navigatorToggleDrawer(this, params);
+    return platformSpecific.navigatorToggleDrawer(this, Navigation.resolveRoute(params));
   }
   setOnNavigatorEvent(callback) {
     this.navigatorEventHandler = callback;