From 31b4a92aa95454c6a5e08b637d0dab1fdd1459f1 Mon Sep 17 00:00:00 2001
From: Lulu Wu <luluwu@fb.com>
Date: Fri, 26 Aug 2022 03:52:57 -0700
Subject: [PATCH] Revert D38460203: Migrate JS error handler to MapBuffer

Differential Revision:
D38460203 (https://github.com/facebook/react-native/commit/e6ef0836c132d6b798e2ff1fc1e1a66c7e238e0b)

Original commit changeset: 98f6243e31da

Original Phabricator Diff: D38460203 (https://github.com/facebook/react-native/commit/e6ef0836c132d6b798e2ff1fc1e1a66c7e238e0b)

fbshipit-source-id: 540a48c807cea7f2898f261b82010da729f3421e
---
 React/CoreModules/BUCK                    |  5 +--
 React/CoreModules/RCTExceptionsManager.h  |  3 +-
 React/CoreModules/RCTExceptionsManager.mm | 39 +++++++----------------
 3 files changed, 14 insertions(+), 33 deletions(-)

diff --git a/React/CoreModules/BUCK b/React/CoreModules/BUCK
index 750745304e9090..c5f95ab7009ceb 100644
--- a/React/CoreModules/BUCK
+++ b/React/CoreModules/BUCK
@@ -1,5 +1,5 @@
 load("@fbsource//tools/build_defs/apple:flag_defs.bzl", "get_objc_arc_preprocessor_flags", "get_preprocessor_flags_for_build_mode")
-load("@fbsource//tools/build_defs/oss:rn_defs.bzl", "react_native_xplat_target", "rn_apple_library", "rn_extra_build_flags")
+load("@fbsource//tools/build_defs/oss:rn_defs.bzl", "rn_apple_library", "rn_extra_build_flags")
 load(
     "@fbsource//xplat/configurations/buck/apple/plugins/sad_xplat_hosted_configurations:react_module_registration.bzl",
     "react_module_plugin_providers",
@@ -129,9 +129,6 @@ rn_apple_library(
     ],
     reexport_all_header_dependencies = True,
     visibility = ["PUBLIC"],
-    deps = [
-        react_native_xplat_target("react/renderer/mapbuffer:mapbufferApple"),
-    ],
     exported_deps = [
         "//xplat/js/react-native-github:FBReactNativeSpecApple",
         "//xplat/js/react-native-github:RCTLinkingApple",
diff --git a/React/CoreModules/RCTExceptionsManager.h b/React/CoreModules/RCTExceptionsManager.h
index 69a1f5c870effd..76d36423d722aa 100644
--- a/React/CoreModules/RCTExceptionsManager.h
+++ b/React/CoreModules/RCTExceptionsManager.h
@@ -7,7 +7,6 @@
 
 #import <Foundation/Foundation.h>
 #import <React/RCTBridgeModule.h>
-#import <react/renderer/mapbuffer/MapBuffer.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -39,7 +38,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (void)reportFatalException:(nullable NSString *)message
                        stack:(nullable NSArray<NSDictionary *> *)stack
                  exceptionId:(double)exceptionId;
-- (void)reportJsException:(const facebook::react::MapBuffer &)errorMap;
+- (void)reportJsException:(NSString *)errorMap;
 
 @property (nonatomic, weak) id<RCTExceptionsManagerDelegate> delegate;
 
diff --git a/React/CoreModules/RCTExceptionsManager.mm b/React/CoreModules/RCTExceptionsManager.mm
index 985ba16fcc7927..9d6aafc044be4f 100644
--- a/React/CoreModules/RCTExceptionsManager.mm
+++ b/React/CoreModules/RCTExceptionsManager.mm
@@ -25,15 +25,6 @@ @implementation RCTExceptionsManager
 
 @synthesize moduleRegistry = _moduleRegistry;
 
-const int FILE_KEY_OF_JS_ERROR = 0;
-const int METHOD_NAME_KEY_OF_JS_ERROR = 1;
-const int LINE_NUMBER_KEY_OF_JS_ERROR = 2;
-const int COLUMN_KEY_OF_JS_ERROR = 3;
-const int FRAMES_KEY_OF_JS_ERROR = 4;
-const int MESSAGE_KEY_OF_JS_ERROR = 5;
-const int ID_KEY_OF_JS_ERROR = 6;
-const int IS_FATAL_KEY_OF_JS_ERROR = 7;
-
 RCT_EXPORT_MODULE()
 
 - (instancetype)initWithDelegate:(id<RCTExceptionsManagerDelegate>)delegate
@@ -159,25 +150,19 @@ - (void)reportFatal:(NSString *)message
   }
 }
 
-- (void)reportJsException:(const facebook::react::MapBuffer &)errorMap
+- (void)reportJsException:(NSString *)errorStr
 {
-  NSString *message = [NSString stringWithCString:errorMap.getString(MESSAGE_KEY_OF_JS_ERROR).c_str()
-                                         encoding:[NSString defaultCStringEncoding]];
-  int exceptionId = errorMap.getInt(ID_KEY_OF_JS_ERROR);
-  BOOL isFatal = errorMap.getBool(IS_FATAL_KEY_OF_JS_ERROR);
-  std::vector<facebook::react::MapBuffer> frames = errorMap.getMapBufferList(FRAMES_KEY_OF_JS_ERROR);
-  NSMutableArray *stack = [[NSMutableArray alloc] init];
-  for (facebook::react::MapBuffer const &mapBuffer : frames) {
-    NSDictionary *frame = @{
-      @"file" : [NSString stringWithCString:mapBuffer.getString(FILE_KEY_OF_JS_ERROR).c_str()
-                                   encoding:[NSString defaultCStringEncoding]],
-      @"methodName" : [NSString stringWithCString:mapBuffer.getString(METHOD_NAME_KEY_OF_JS_ERROR).c_str()
-                                         encoding:[NSString defaultCStringEncoding]],
-      @"lineNumber" : [NSNumber numberWithInt:mapBuffer.getInt(LINE_NUMBER_KEY_OF_JS_ERROR)],
-      @"column" : [NSNumber numberWithInt:mapBuffer.getInt(COLUMN_KEY_OF_JS_ERROR)],
-    };
-    [stack addObject:frame];
-  }
+  NSData *jsonData = [errorStr dataUsingEncoding:NSUTF8StringEncoding];
+  NSError *jsonError;
+  NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:jsonData
+                                                       options:NSJSONWritingPrettyPrinted
+                                                         error:&jsonError];
+
+  NSString *message = [dict objectForKey:@"message"];
+  double exceptionId = [[dict objectForKey:@"id"] doubleValue];
+  NSArray *stack = [dict objectForKey:@"stack"];
+  BOOL isFatal = [[dict objectForKey:@"isFatal"] boolValue];
+
   if (isFatal) {
     [self reportFatalException:message stack:stack exceptionId:exceptionId];
   } else {