Attach js_extra_data to JS errors on iOS

Summary:
Changelog:
[iOS][Fixed] - Expose the extraData dict attached to JavaScript errors to the native ExceptionManager on iOS, similar to Android

Attaching the `extraData` dict to JavaScript crash reports is something that was done for Android only in 2019 (D16133080 (3a825c0)), and somehow we never really got around to adding it in iOS. This diff finally adds the capability to iOS as well. `extraData` can be used to attach various bits of data to a crash report for better debugging and categorization. As with the Android implementation, `extraData` is not attached if the `reportException` API is not used.

Reviewed By: dmitryrykun

Differential Revision: D35743658

fbshipit-source-id: de4060cb6e514db1d85907441a8962f98e9b8392

Author: GijsWeterings

React/Base/RCTAssert.h

@@ -74,6 +74,11 @@ RCT_EXTERN NSString *const RCTObjCStackTraceKey;
  */
 RCT_EXTERN NSString *const RCTFatalExceptionName;
 
+/**
+ * Stringified JSON object containing extra data to attach to the error from JavaScript.
+ */
+RCT_EXTERN NSString *const RCTJSExtraDataKey;
+
 /**
  * A block signature to be used for custom assertion handling.
  */

React/Base/RCTAssert.m

@@ -14,6 +14,7 @@
 NSString *const RCTObjCStackTraceKey = @"RCTObjCStackTraceKey";
 NSString *const RCTFatalExceptionName = @"RCTFatalException";
 NSString *const RCTUntruncatedMessageKey = @"RCTUntruncatedMessageKey";
+NSString *const RCTJSExtraDataKey = @"RCTJSExtraDataKey";
 
 static NSString *const RCTAssertFunctionStack = @"RCTAssertFunctionStack";
 

React/CoreModules/RCTExceptionsManager.h

@@ -15,10 +15,12 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (void)handleSoftJSExceptionWithMessage:(nullable NSString *)message
                                    stack:(nullable NSArray *)stack
-                             exceptionId:(NSNumber *)exceptionId;
+                             exceptionId:(NSNumber *)exceptionId
+                         extraDataAsJSON:(nullable NSString *)extraDataAsJSON;
 - (void)handleFatalJSExceptionWithMessage:(nullable NSString *)message
                                     stack:(nullable NSArray *)stack
-                              exceptionId:(NSNumber *)exceptionId;
+                              exceptionId:(NSNumber *)exceptionId
+                          extraDataAsJSON:(nullable NSString *)extraDataAsJSON;
 
 @optional
 - (void)updateJSExceptionWithMessage:(nullable NSString *)message

React/CoreModules/RCTExceptionsManager.mm

@@ -35,27 +35,35 @@ - (instancetype)initWithDelegate:(id<RCTExceptionsManagerDelegate>)delegate
   return self;
 }
 
-- (void)reportSoft:(NSString *)message stack:(NSArray<NSDictionary *> *)stack exceptionId:(double)exceptionId
+- (void)reportSoft:(NSString *)message
+              stack:(NSArray<NSDictionary *> *)stack
+        exceptionId:(double)exceptionId
+    extraDataAsJSON:(nullable NSString *)extraDataAsJSON
 {
   RCTRedBox *redbox = [_moduleRegistry moduleForName:"RedBox"];
   [redbox showErrorMessage:message withStack:stack errorCookie:(int)exceptionId];
 
   if (_delegate) {
     [_delegate handleSoftJSExceptionWithMessage:message
                                           stack:stack
-                                    exceptionId:[NSNumber numberWithDouble:exceptionId]];
+                                    exceptionId:[NSNumber numberWithDouble:exceptionId]
+                                extraDataAsJSON:extraDataAsJSON];
   }
 }
 
-- (void)reportFatal:(NSString *)message stack:(NSArray<NSDictionary *> *)stack exceptionId:(double)exceptionId
+- (void)reportFatal:(NSString *)message
+              stack:(NSArray<NSDictionary *> *)stack
+        exceptionId:(double)exceptionId
+    extraDataAsJSON:(nullable NSString *)extraDataAsJSON
 {
   RCTRedBox *redbox = [_moduleRegistry moduleForName:"RedBox"];
   [redbox showErrorMessage:message withStack:stack errorCookie:(int)exceptionId];
 
   if (_delegate) {
     [_delegate handleFatalJSExceptionWithMessage:message
                                            stack:stack
-                                     exceptionId:[NSNumber numberWithDouble:exceptionId]];
+                                     exceptionId:[NSNumber numberWithDouble:exceptionId]
+                                 extraDataAsJSON:extraDataAsJSON];
   }
 
   static NSUInteger reloadRetries = 0;
@@ -64,7 +72,8 @@ - (void)reportFatal:(NSString *)message stack:(NSArray<NSDictionary *> *)stack e
     RCTTriggerReloadCommandListeners(@"JS Crash Reload");
   } else if (!RCT_DEV) {
     NSString *description = [@"Unhandled JS Exception: " stringByAppendingString:message];
-    NSDictionary *errorInfo = @{NSLocalizedDescriptionKey : description, RCTJSStackTraceKey : stack};
+    NSDictionary *errorInfo =
+        @{NSLocalizedDescriptionKey : description, RCTJSStackTraceKey : stack, RCTJSExtraDataKey : extraDataAsJSON};
     RCTFatal([NSError errorWithDomain:RCTErrorDomain code:0 userInfo:errorInfo]);
   }
 }
@@ -74,15 +83,15 @@ - (void)reportFatal:(NSString *)message stack:(NSArray<NSDictionary *> *)stack e
                   : (NSArray<NSDictionary *> *)stack exceptionId
                   : (double)exceptionId)
 {
-  [self reportSoft:message stack:stack exceptionId:exceptionId];
+  [self reportSoft:message stack:stack exceptionId:exceptionId extraDataAsJSON:nil];
 }
 
 RCT_EXPORT_METHOD(reportFatalException
                   : (NSString *)message stack
                   : (NSArray<NSDictionary *> *)stack exceptionId
                   : (double)exceptionId)
 {
-  [self reportFatal:message stack:stack exceptionId:exceptionId];
+  [self reportFatal:message stack:stack exceptionId:exceptionId extraDataAsJSON:nil];
 }
 
 RCT_EXPORT_METHOD(updateExceptionMessage
@@ -131,10 +140,13 @@ - (void)reportFatal:(NSString *)message stack:(NSArray<NSDictionary *> *)stack e
     [stackArray addObject:frameDict];
   }
 
+  NSDictionary *extraData = (NSDictionary *)data.extraData();
+  NSString *extraDataAsJSON = RCTJSONStringify(extraData, NULL);
+
   if (data.isFatal()) {
-    [self reportFatal:message stack:stackArray exceptionId:exceptionId];
+    [self reportFatal:message stack:stackArray exceptionId:exceptionId extraDataAsJSON:extraDataAsJSON];
   } else {
-    [self reportSoft:message stack:stackArray exceptionId:exceptionId];
+    [self reportSoft:message stack:stackArray exceptionId:exceptionId extraDataAsJSON:extraDataAsJSON];
   }
 }