react-native/React/Base/RCTJSCErrorHandling.mm

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#include "RCTJSCErrorHandling.h"
#import <jschelpers/JavaScriptCore.h>
#import "RCTAssert.h"
#import "RCTJSStackFrame.h"
#import "RCTLog.h"
NSString *const RCTJSExceptionUnsymbolicatedStackTraceKey = @"RCTJSExceptionUnsymbolicatedStackTraceKey";
NSError *RCTNSErrorFromJSError(JSValue *exception)
{
NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
userInfo[NSLocalizedDescriptionKey] = [NSString stringWithFormat:@"Unhandled JS Exception: %@", [exception[@"name"] toString] ?: @"Unknown"];
NSString *const exceptionMessage = [exception[@"message"] toString];
if ([exceptionMessage length]) {
userInfo[NSLocalizedFailureReasonErrorKey] = exceptionMessage;
}
NSString *const stack = [exception[@"stack"] toString];
if ([@"undefined" isEqualToString:stack]) {
RCTLogWarn(@"Couldn't get stack trace for %@:%@", exception[@"sourceURL"], exception[@"line"]);
} else if ([stack length]) {
NSArray<RCTJSStackFrame *> *const unsymbolicatedFrames = [RCTJSStackFrame stackFramesWithLines:stack];
userInfo[RCTJSStackTraceKey] = unsymbolicatedFrames;
}
return [NSError errorWithDomain:RCTErrorDomain code:1 userInfo:userInfo];
}
NSError *RCTNSErrorFromJSErrorRef(JSValueRef exceptionRef, JSGlobalContextRef ctx)
{
JSContext *context = [JSC_JSContext(ctx) contextWithJSGlobalContextRef:ctx];
JSValue *exception = [JSC_JSValue(ctx) valueWithJSValueRef:exceptionRef inContext:context];
return RCTNSErrorFromJSError(exception);
}