Minor refactor to RCTBundleURLProvider's constants

Reviewed By: javache

Differential Revision: D3556772

fbshipit-source-id: ae394c751679171345804c4d2eab8cd41cc4ba13

Author: adamjernst

React/Base/RCTBundleURLProvider.h

@@ -9,10 +9,10 @@
 
 #import <Foundation/Foundation.h>
 
-@interface RCTBundleURLProvider : NSObject
-
 extern NSString *const RCTBundleURLProviderUpdatedNotification;
 
+@interface RCTBundleURLProvider : NSObject
+
 /**
  * Set default settings on NSUserDefaults.
  */

React/Base/RCTBundleURLProvider.m

@@ -13,13 +13,13 @@
 
 NSString *const RCTBundleURLProviderUpdatedNotification = @"RCTBundleURLProviderUpdatedNotification";
 
+static const NSUInteger kDefaultPort = 8081;
+
 static NSString *const kRCTJsLocationKey = @"RCT_jsLocation";
 static NSString *const kRCTEnableLiveReloadKey = @"RCT_enableLiveReload";
 static NSString *const kRCTEnableDevKey = @"RCT_enableDev";
 static NSString *const kRCTEnableMinificationKey = @"RCT_enableMinification";
 
-static NSString *const kDefaultPort = @"8081";
-
 @implementation RCTBundleURLProvider
 
 - (instancetype)init
@@ -61,7 +61,7 @@ - (void)resetToDefaults
 
 static NSString *serverRootWithHost(NSString *host)
 {
-  return [NSString stringWithFormat:@"http://%@:%@/", host, kDefaultPort];
+  return [NSString stringWithFormat:@"http://%@:%lu/", host, (unsigned long)kDefaultPort];
 }
 
 #if RCT_DEV