async await fix for ios

ios/RCCManagerModule.m

 -(void)dismissAllModalPresenters:(NSMutableArray*)allPresentedViewControllers resolver:(RCTPromiseResolveBlock)resolve
 {
     UIViewController *rootViewController = [UIApplication sharedApplication].delegate.window.rootViewController;
-
+    
     if (allPresentedViewControllers.count > 0)
     {
         dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),^
 #pragma mark - RCT exported methods
 
 RCT_EXPORT_METHOD(
-                  setRootController:(NSDictionary*)layout animationType:(NSString*)animationType globalProps:(NSDictionary*)globalProps)
+                  setRootController:(NSDictionary*)layout animationType:(NSString*)animationType globalProps:(NSDictionary*)globalProps resolver:(RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject)
 {
     if ([[RCCManager sharedInstance] getBridge].loading) {
-        [self deferSetRootControllerWhileBridgeLoading:layout animationType:animationType globalProps:globalProps];
+        [self deferSetRootControllerWhileBridgeLoading:layout animationType:animationType globalProps:globalProps resolver:(RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject];
         return;
     }
     
     dispatch_async(dispatch_get_main_queue(), ^{
         [self performSetRootController:layout animationType:animationType globalProps:globalProps];
+        resolve(nil);
     });
 }
 
 /**
  * on RN31 there's a timing issue, we must wait for the bridge to finish loading
  */
--(void)deferSetRootControllerWhileBridgeLoading:(NSDictionary*)layout animationType:(NSString*)animationType globalProps:(NSDictionary*)globalProps
+-(void)deferSetRootControllerWhileBridgeLoading:(NSDictionary*)layout animationType:(NSString*)animationType globalProps:(NSDictionary*)globalProps resolver:(RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject
 {
     dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.0001 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
-        [self setRootController:layout animationType:animationType globalProps:globalProps];
+        [self setRootController:layout animationType:animationType globalProps:globalProps resolver:resolve rejecter:reject];
     });
 }
 
     }
     else
     {
-      resolve(nil);
+        resolve(nil);
     }
 }
 

src/deprecated/controllers/index.js

     registerController: function (appKey, getControllerFunc) {
       _controllerRegistry[appKey] = getControllerFunc();
     },
-    setRootController: function (appKey, animationType = 'none', passProps = {}) {
+    setRootController: async function (appKey, animationType = 'none', passProps = {}) {
       var controller = _controllerRegistry[appKey];
       if (controller === undefined) return;
       var layout = controller.render();
       _validateDrawerProps(layout);
       _processProperties(_.get(layout, 'props.appStyle', {}));
-      RCCManager.setRootController(layout, animationType, passProps);
+      return await RCCManager.setRootController(layout, animationType, passProps);
     }
   },
 
 };
 
 module.exports = Controllers;
-

src/deprecated/platformSpecificDeprecated.ios.js

 
 import PropRegistry from '../PropRegistry';
 
-function startTabBasedApp(params) {
+async function startTabBasedApp(params) {
   if (!params.tabs) {
     console.error('startTabBasedApp(params): params.tabs is required');
     return;
   _.set(params, 'passProps.timestamp', Date.now());
 
   ControllerRegistry.registerController(controllerID, () => Controller);
-  ControllerRegistry.setRootController(controllerID, params.animationType, params.passProps || {});
+  return await ControllerRegistry.setRootController(controllerID, params.animationType, params.passProps || {});
 }
 
-function startSingleScreenApp(params) {
+async function startSingleScreenApp(params) {
   if (!params.screen) {
     console.error('startSingleScreenApp(params): params.screen is required');
     return;
   savePassProps(params);
 
   ControllerRegistry.registerController(controllerID, () => Controller);
-  ControllerRegistry.setRootController(controllerID, params.animationType, params.passProps || {});
+  return await ControllerRegistry.setRootController(controllerID, params.animationType, params.passProps || {});
 }
 
 function _mergeScreenSpecificSettings(screenID, screenInstanceID, params) {