Fixed.

Author: crocuis

Source/JavascriptGraphEditor/JavascriptGraphEditor.Build.cs

@@ -4,7 +4,8 @@ namespace UnrealBuildTool.Rules
 {
 	public class JavascriptGraphEditor : ModuleRules
 	{
-		public JavascriptGraphEditor(ReadOnlyTargetRules Target)
+		public JavascriptGraphEditor(ReadOnlyTargetRules Target) 
+            : base(Target)
 		{
             PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;
             PrivateIncludePaths.AddRange(

Source/V8/Private/Debugger.cpp

@@ -24,12 +24,12 @@ PRAGMA_DISABLE_SHADOW_VARIABLE_WARNINGS
 #include "Translator.h"
 #endif
 
-#if V8_MINOR_VERSION >= 5
-#	define V8_Debug_ProcessDebugMessages(isolate) Debug::ProcessDebugMessages(isolate)
-#	define V8_Debug_SetMessageHandler(isolate,fn) Debug::SetMessageHandler(isolate,fn)
-#else
+#if V8_MAJOR_VERSION == 5 && V8_MINOR_VERSION < 5
 #	define V8_Debug_ProcessDebugMessages(isolate) Debug::ProcessDebugMessages()
 #	define V8_Debug_SetMessageHandler(isolate,fn) Debug::SetMessageHandler(fn)
+#else
+#	define V8_Debug_ProcessDebugMessages(isolate) Debug::ProcessDebugMessages(isolate)
+#	define V8_Debug_SetMessageHandler(isolate,fn) Debug::SetMessageHandler(isolate,fn)
 #endif
 
 using namespace v8;

Source/V8/Private/JavascriptIsolate_Private.cpp

@@ -367,7 +367,7 @@ class FJavascriptIsolateImplementation : public FJavascriptIsolate
 			GetSelf(isolate)->OnGCEvent(true, type, flags);
 		});
 
-#if V8_MINOR_VERSION < 3
+#if V8_MAJOR_VERSION == 5 && V8_MINOR_VERSION < 3
 		isolate_->AddMemoryAllocationCallback([](ObjectSpace space, AllocationAction action,int size) {
 			OnMemoryAllocationEvent(space, action, size);
 		}, kObjectSpaceAll, kAllocationActionAll);
@@ -2545,7 +2545,7 @@ class FJavascriptIsolateImplementation : public FJavascriptIsolate
 		typedef typename WeakData::ValueType WeakDataValueInitType;
 		typedef TPairInitializer<WeakDataKeyInitType, WeakDataValueInitType> InitializerType;
 
-#if V8_MINOR_VERSION < 3
+#if V8_MAJOR_VERSION == 5 && V8_MINOR_VERSION < 3
 		Handle.template SetWeak<WeakData>(new WeakData(InitializerType(GetContext(), GarbageCollectedObject)), [](const WeakCallbackData<U, WeakData>& data) {
 			auto Parameter = data.GetParameter();
 

Source/V8/Private/V8Module.cpp

@@ -58,7 +58,7 @@ class FUnrealJSPlatform : public v8::Platform
 		return platform_;
 	}
 	FUnrealJSPlatform() 
-		: platform_(platform::CreateDefaultPlatform())
+		: platform_(platform::CreateDefaultPlatform(0, platform::IdleTaskSupport::kEnabled))
 	{
 		TickDelegate = FTickerDelegate::CreateRaw(this, &FUnrealJSPlatform::HandleTicker);
 		TickHandle = FTicker::GetCoreTicker().AddTicker(TickDelegate);

Source/V8/V8.Build.cs

@@ -107,7 +107,7 @@ private void HackWebSocketIncludeDir(ReadOnlyTargetRules Target)
     private bool LoadV8(ReadOnlyTargetRules Target)
     {
         int[] v8_version = GetV8Version();
-        bool ShouldLink_libsampler = v8_version[1] >= 3;
+        bool ShouldLink_libsampler = !(v8_version[0] == 5 && v8_version[1] < 3);
 
         if ((Target.Platform == UnrealTargetPlatform.Win64) || (Target.Platform == UnrealTargetPlatform.Win32))
         {

ThirdParty/v8/include/v8-version.h

@@ -10,8 +10,8 @@
 // system so their names cannot be changed without changing the scripts.
 #define V8_MAJOR_VERSION 5
 #define V8_MINOR_VERSION 9
-#define V8_BUILD_NUMBER 221
-#define V8_PATCH_LEVEL 0
+#define V8_BUILD_NUMBER 211
+#define V8_PATCH_LEVEL 31
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)

ThirdParty/v8/include/v8.h

@@ -8350,14 +8350,16 @@ class V8_EXPORT Context {
   Isolate* GetIsolate();
 
   /**
-   * The field at kDebugIdIndex used to be reserved for the inspector.
-   * It now serves no purpose.
+   * The field at kDebugIdIndex is reserved for V8 debugger implementation.
+   * The value is propagated to the scripts compiled in given Context and
+   * can be used for filtering scripts.
    */
   enum EmbedderDataFields { kDebugIdIndex = 0 };
 
   /**
    * Gets the embedder data with the given index, which must have been set by a
-   * previous call to SetEmbedderData with the same index.
+   * previous call to SetEmbedderData with the same index. Note that index 0
+   * currently has a special meaning for Chrome's debugger.
    */
   V8_INLINE Local<Value> GetEmbedderData(int index);