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  RCTBridge *bridge = [[RCTBridge alloc] initWithBundleURL:jsCodeLocation
                 moduleProvider:nil
                  launchOptions:launchOptions];
   #if RCT_DEV
   [bridge moduleForClass:[RCTDevLoadingView class]];
   #endif

   RCTRootView *rootView = [[RCTRootView alloc] initWithBridge:bridge
                    moduleName:@"<AddYourAppNameHere>"
                 initialProperties:nil];