Fix packager reload command not working

Reviewed By: yungsters, mmmulani

Differential Revision: D5061001

fbshipit-source-id: 8b75c95525f90955a8dc2054861ad3b6e25eab1d

Author: javache

React/DevSupport/RCTPackagerConnection.m

@@ -41,8 +41,8 @@ - (instancetype)initWithBridge:(RCTBridge *)bridge
     _bridge = bridge;
 
     _handlers = [NSMutableDictionary new];
-    _handlers[@"reload"] = [[RCTReloadPackagerMethod alloc] initWithBridge:_bridge];
-    _handlers[@"pokeSamplingProfiler"] = [[RCTSamplingProfilerPackagerMethod alloc] initWithBridge:_bridge];
+    _handlers[@"reload"] = [[RCTReloadPackagerMethod alloc] initWithBridge:bridge];
+    _handlers[@"pokeSamplingProfiler"] = [[RCTSamplingProfilerPackagerMethod alloc] initWithBridge:bridge];
 
     [self connect];
   }

React/Modules/RCTDevSettings.mm

@@ -141,7 +141,6 @@ - (instancetype)initWithDataSource:(id<RCTDevSettingsDataSource>)dataSource
 {
   if (self = [super init]) {
     _dataSource = dataSource;
-    [self _configurePackagerConnection];
 
     [[NSNotificationCenter defaultCenter] addObserver:self
                                              selector:@selector(jsLoaded:)
@@ -156,6 +155,13 @@ - (instancetype)initWithDataSource:(id<RCTDevSettingsDataSource>)dataSource
   return self;
 }
 
+- (void)setBridge:(RCTBridge *)bridge
+{
+  RCTAssert(_bridge == nil, @"RCTDevSettings module should not be reused");
+  _bridge = bridge;
+  [self _configurePackagerConnection];
+}
+
 - (dispatch_queue_t)methodQueue
 {
   return dispatch_get_main_queue();