Share bundled source URL to RN

Differential Revision: D6192988

fbshipit-source-id: efa584ee2340a34156956990d6cd96d37ba4ab60

React/Base/RCTBridge.h

@@ -171,6 +171,11 @@ RCT_EXTERN NSString *RCTBridgeModuleNameForClass(Class bridgeModuleClass);
  */
 @property (nonatomic, strong, readonly) NSURL *bundleURL;
 
+/**
+ * URL of the original script (not necessarily loaded) of the bridge.
+ */
+@property (nonatomic, strong, readonly) NSURL *bundledSourceURL;
+
 /**
  * The class of the executor currently being used. Changes to this value will
  * take effect after the bridge is reloaded.

React/Base/RCTBridge.m

@@ -329,6 +329,11 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init)
   // Sanitize the bundle URL
   _bundleURL = [RCTConvert NSURL:_bundleURL.absoluteString];
 
+  if ([self.delegate respondsToSelector:@selector(bundledSourceURLForBridge:)]) {
+    _bundledSourceURL = [self.delegate bundledSourceURLForBridge:self];
+    _bundledSourceURL = [RCTConvert NSURL:_bundledSourceURL.absoluteString];
+  }
+
   self.batchedBridge = [[bridgeClass alloc] initWithParentBridge:self];
   [self.batchedBridge start];
 

React/CxxBridge/RCTCxxBridge.mm

@@ -175,10 +175,11 @@ struct RCTInstanceCallback : public InstanceCallback {
   std::shared_ptr<Instance> _reactInstance;
 }
 
-@synthesize loading = _loading;
-@synthesize valid = _valid;
-@synthesize performanceLogger = _performanceLogger;
 @synthesize bridgeDescription = _bridgeDescription;
+@synthesize loading = _loading;
+@synthesize bundledSourceURL = _bundledSourceURL;
+@synthesize performanceLogger = _performanceLogger;
+@synthesize valid = _valid;
 
 + (void)initialize
 {
@@ -207,6 +208,9 @@ struct RCTInstanceCallback : public InstanceCallback {
                         launchOptions:bridge.launchOptions])) {
     _parentBridge = bridge;
     _performanceLogger = [bridge performanceLogger];
+    if ([bridge.delegate respondsToSelector:@selector(bundledSourceURLForBridge:)]) {
+      _bundledSourceURL = [bridge.delegate bundledSourceURLForBridge:bridge];
+    }
 
     registerPerformanceLoggerHooks(_performanceLogger);
 

React/Modules/RCTSourceCode.m

@@ -25,7 +25,8 @@ RCT_EXPORT_MODULE()
 - (NSDictionary<NSString *, id> *)constantsToExport
 {
   return @{
-    @"scriptURL": self.bridge.bundleURL.absoluteString ?: @""
+    @"scriptURL": self.bridge.bundleURL.absoluteString ?: @"",
+    @"bundledScriptURL": self.bridge.bundledSourceURL.absoluteString ?: @""
   };
 }