Merge pull request #2111 from swig/remove-obsolete-js-support

Remove obsolete js support

9 files changed, 13 insertions, 483 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5374c5428..d23482a76 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -89,9 +89,6 @@ jobs:
           CPPSTD: c++14
         - SWIGLANG: javascript
           ENGINE: jsc
-        - SWIGLANG: javascript
-          ENGINE: v8
-          os: ubuntu-18.04 # libv8-dev only actually provides v8 in 18.04.
         - SWIGLANG: lua
         - SWIGLANG: lua
           VER: '5.3'
diff --git a/Doc/Manual/Javascript.html b/Doc/Manual/Javascript.html
index 54bd68521..ab8657510 100644
--- a/Doc/Manual/Javascript.html
+++ b/Doc/Manual/Javascript.html
@@ -89,24 +89,10 @@ $ swig -javascript -jsc example.i</pre>
 <pre>
 $ swig -c++ -javascript -jsc example.i</pre>
 </div>
-<p>The V8 code that SWIG generates should work with most versions from 3.11.10.
-However, the only early version that receives some testing is 3.14.5, which is
-still shipped with Ubuntu for some reason. Other than that it's probably safer
-to assume that versions earlier than 5.0 are no longer supported. Keep in mind
-that these are V8 versions, not Node.js. To give some perspective, Node.js v6.0
+<p>The V8 code that SWIG generates requires at least V8 5.0. Keep in mind
+that this is theV8 version, not Node.js. To give some perspective, Node.js v6.0
 uses V8 5.0, v12.0 - 7.4, v14.0 - 8.1...</p>
-<p>The API headers for V8 &gt;= 4.3.10 define constants which SWIG can use to
-determine the V8 version it is compiling for.  For versions &lt; 4.3.10, you
-need to specify the V8 version when running SWIG.  This is specified as a hex
-constant, but the constant is read as pairs of decimal digits, so for V8
-3.25.30 use constant 0x032530.  This scheme can't represent components &gt; 99,
-but this constant is only useful for V8 &lt; 4.3.10, and no V8 versions from
-that era had a component &gt; 99.  For example:</p>
-<div class="shell">
-<pre>
-$ swig -c++ -javascript -v8 -DV8_VERSION=0x032530 example.i</pre>
-</div>
-<p>If you're targeting V8 &gt;= 4.3.10, you would just run swig like so:</p>
+<p>To generate code for V8, you would run swig like so:</p>
 <div class="shell">
 <pre>
 $ swig -c++ -javascript -v8 example.i</pre>
diff --git a/Lib/javascript/v8/javascriptcode.swg b/Lib/javascript/v8/javascriptcode.swg
index 2abed9488..dcda0ee63 100644
--- a/Lib/javascript/v8/javascriptcode.swg
+++ b/Lib/javascript/v8/javascriptcode.swg
@@ -105,17 +105,10 @@ fail:
 %{
   if(args.Length() == $jsargcount) {
     errorHandler.err.Clear();
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-    self = $jswrapper(args, errorHandler);
-    if(errorHandler.err.IsEmpty()) {
-      SWIGV8_ESCAPE(self);
-    }
-#else
     $jswrapper(args, errorHandler);
     if(errorHandler.err.IsEmpty()) {
       return;
     }
-#endif
   }
 %}
 
@@ -127,22 +120,8 @@ fail:
 %fragment ("js_dtor", "templates")
 %{
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-static void $jswrapper(v8::Persistent< v8::Value > object, void *parameter) {
-  SWIGV8_Proxy *proxy = static_cast<SWIGV8_Proxy *>(parameter);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-static void $jswrapper(v8::Isolate *isolate, v8::Persistent<v8::Value> object, void *parameter) {
-  SWIGV8_Proxy *proxy = static_cast<SWIGV8_Proxy *>(parameter);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < SWIGV8_SETWEAK_VERSION)
-static void $jswrapper(v8::Isolate *isolate, v8::Persistent<v8::Object> *object, SWIGV8_Proxy *proxy) {
-#elif (V8_MAJOR_VERSION-0) < 5
-static void $jswrapper(const v8::WeakCallbackData<v8::Object, SWIGV8_Proxy> &data) {
-  v8::Local<v8::Object> object = data.GetValue();
-  SWIGV8_Proxy *proxy = data.GetParameter();
-#else
-  static void $jswrapper(const v8::WeakCallbackInfo<SWIGV8_Proxy> &data) {
+static void $jswrapper(const v8::WeakCallbackInfo<SWIGV8_Proxy> &data) {
   SWIGV8_Proxy *proxy = data.GetParameter();
-#endif
 
   if(proxy->swigCMemOwn && proxy->swigCObject) {
 #ifdef SWIGRUNTIME_DEBUG
@@ -151,20 +130,6 @@ static void $jswrapper(const v8::WeakCallbackData<v8::Object, SWIGV8_Proxy> &dat
     $jsfree proxy->swigCObject;
   }
   delete proxy;
-
-#if (V8_MAJOR_VERSION-0) < 5
-  object.Clear();
-#endif
-  
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-  object.Dispose();
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-  object.Dispose(isolate);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032100)
-  object->Dispose(isolate);
-#elif (V8_MAJOR_VERSION-0) < 5
-  object->Dispose();
-#endif
 }
 %}
 
@@ -176,40 +141,14 @@ static void $jswrapper(const v8::WeakCallbackData<v8::Object, SWIGV8_Proxy> &dat
  * ----------------------------------------------------------------------------- */
 %fragment ("js_dtoroverride", "templates")
 %{
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-static void $jswrapper(v8::Persistent<v8::Value> object, void *parameter) {
-  SWIGV8_Proxy *proxy = static_cast<SWIGV8_Proxy *>(parameter);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-static void $jswrapper(v8::Isolate *isolate, v8::Persistent<v8::Value> object, void *parameter) {
-  SWIGV8_Proxy *proxy = static_cast<SWIGV8_Proxy *>(parameter);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < SWIGV8_SETWEAK_VERSION)
-static void $jswrapper(v8::Isolate *isolate, v8::Persistent< v8::Object> *object, SWIGV8_Proxy *proxy) {
-#elif (V8_MAJOR_VERSION-0) < 5
-static void $jswrapper(const v8::WeakCallbackData<v8::Object, SWIGV8_Proxy> &data) {
-  v8::Local<v8::Object> object = data.GetValue();
-  SWIGV8_Proxy *proxy = data.GetParameter();
-#else
 static void $jswrapper(const v8::WeakCallbackInfo<SWIGV8_Proxy> &data) {
   SWIGV8_Proxy *proxy = data.GetParameter();
-#endif
 
   if(proxy->swigCMemOwn && proxy->swigCObject) {
     $jstype arg1 = ($jstype)proxy->swigCObject;
     ${destructor_action}
   }
   delete proxy;
-
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-  object.Dispose();
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-  object.Dispose(isolate);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032100)
-  object->Dispose(isolate);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < SWIGV8_SETWEAK_VERSION)
-  object->Dispose();
-#elif (V8_MAJOR_VERSION-0) < 5
-  object.Clear();
-#endif
 }
 %}
 
@@ -221,11 +160,7 @@ static void $jswrapper(const v8::WeakCallbackInfo<SWIGV8_Proxy> &data) {
  * ----------------------------------------------------------------------------- */
 %fragment("js_getter", "templates")
 %{
-#if (V8_MAJOR_VERSION-0) < 5
-static SwigV8ReturnValue $jswrapper(v8::Local<v8::String> property, const SwigV8PropertyCallbackInfo &info) {
-#else
 static SwigV8ReturnValue $jswrapper(v8::Local<v8::Name> property, const SwigV8PropertyCallbackInfo &info) {
-#endif
   SWIGV8_HANDLESCOPE();
   
   SWIGV8_VALUE jsresult;
@@ -247,11 +182,7 @@ fail:
  * ----------------------------------------------------------------------------- */
 %fragment("js_setter", "templates")
 %{
-#if (V8_MAJOR_VERSION-0) < 5
-static void $jswrapper(v8::Local<v8::String> property, v8::Local<v8::Value> value, const SwigV8PropertyCallbackInfoVoid &info) {
-#else
 static void $jswrapper(v8::Local<v8::Name> property, v8::Local<v8::Value> value, const SwigV8PropertyCallbackInfoVoid &info) {
-#endif
   SWIGV8_HANDLESCOPE();
   
   $jslocals
@@ -344,17 +275,10 @@ fail:
 
   if(args.Length() == $jsargcount) {
     errorHandler.err.Clear();
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-    jsresult = $jswrapper(args, errorHandler);
-    if(errorHandler.err.IsEmpty()) {
-      SWIGV8_ESCAPE(jsresult);
-    }
-#else
     $jswrapper(args, errorHandler);
     if(errorHandler.err.IsEmpty()) {
       return;
     }
-#endif
   }
 %}
 
@@ -394,15 +318,11 @@ fail:
 %{
   if (SWIGTYPE_p$jsbaseclass->clientdata && !(static_cast<SWIGV8_ClientData *>(SWIGTYPE_p$jsbaseclass->clientdata)->class_templ.IsEmpty()))
   {
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-    $jsmangledname_class->Inherit(static_cast<SWIGV8_ClientData *>(SWIGTYPE_p$jsbaseclass->clientdata)->class_templ);
-#else
     $jsmangledname_class->Inherit(
       v8::Local<v8::FunctionTemplate>::New(
         v8::Isolate::GetCurrent(),
         static_cast<SWIGV8_ClientData *>(SWIGTYPE_p$jsbaseclass->clientdata)->class_templ)
      );
-#endif
 
 #ifdef SWIGRUNTIME_DEBUG
     printf("Inheritance successful $jsmangledname $jsbaseclass\n");
@@ -425,10 +345,7 @@ fail:
   SWIGV8_FUNCTION_TEMPLATE $jsmangledname_class_0 = SWIGV8_CreateClassTemplate("$jsname");
   $jsmangledname_class_0->SetCallHandler($jsctor);
   $jsmangledname_class_0->Inherit($jsmangledname_class);
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-  $jsmangledname_class_0->SetHiddenPrototype(true);
-  v8::Handle<v8::Object> $jsmangledname_obj = $jsmangledname_class_0->GetFunction();
-#elif (SWIG_V8_VERSION < 0x0704)
+#if (SWIG_V8_VERSION < 0x0704)
   $jsmangledname_class_0->SetHiddenPrototype(true);
   v8::Local<v8::Object> $jsmangledname_obj = $jsmangledname_class_0->GetFunction();
 #else
@@ -444,12 +361,7 @@ fail:
  * ----------------------------------------------------------------------------- */
 %fragment("jsv8_register_class", "templates")
 %{
-#if (V8_MAJOR_VERSION-0) < 5
-  $jsparent_obj->Set(SWIGV8_SYMBOL_NEW("$jsname"), $jsmangledname_obj);
-#else
   SWIGV8_MAYBE_CHECK($jsparent_obj->Set(context, SWIGV8_SYMBOL_NEW("$jsname"), $jsmangledname_obj));
-#endif
-
 %}
 
 /* -----------------------------------------------------------------------------
@@ -469,11 +381,7 @@ fail:
  * ----------------------------------------------------------------------------- */
 %fragment("jsv8_register_namespace", "templates")
 %{
-#if (V8_MAJOR_VERSION-0) < 5
-  $jsparent_obj->Set(SWIGV8_SYMBOL_NEW("$jsname"), $jsmangledname_obj);
-#else
   SWIGV8_MAYBE_CHECK($jsparent_obj->Set(context, SWIGV8_SYMBOL_NEW("$jsname"), $jsmangledname_obj));
-#endif
 %}
 
 /* -----------------------------------------------------------------------------
diff --git a/Lib/javascript/v8/javascripthelpers.swg b/Lib/javascript/v8/javascripthelpers.swg
index fdbff000e..ea303fa3d 100644
--- a/Lib/javascript/v8/javascripthelpers.swg
+++ b/Lib/javascript/v8/javascripthelpers.swg
@@ -1,22 +1,9 @@
 %insert(runtime) %{
 
-// Note: since 3.19 there are new CallBack types, since 03.21.9 the old ones have been removed
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-typedef v8::InvocationCallback  SwigV8FunctionCallback;
-typedef v8::AccessorGetter      SwigV8AccessorGetterCallback;
-typedef v8::AccessorSetter      SwigV8AccessorSetterCallback;
-typedef v8::AccessorInfo        SwigV8PropertyCallbackInfoVoid;
-#elif (V8_MAJOR_VERSION-0) < 5
-typedef v8::FunctionCallback            SwigV8FunctionCallback;
-typedef v8::AccessorGetterCallback      SwigV8AccessorGetterCallback;
-typedef v8::AccessorSetterCallback      SwigV8AccessorSetterCallback;
-typedef v8::PropertyCallbackInfo<void>  SwigV8PropertyCallbackInfoVoid;
-#else
 typedef v8::FunctionCallback            SwigV8FunctionCallback;
 typedef v8::AccessorNameGetterCallback  SwigV8AccessorGetterCallback;
 typedef v8::AccessorNameSetterCallback  SwigV8AccessorSetterCallback;
 typedef v8::PropertyCallbackInfo<void>  SwigV8PropertyCallbackInfoVoid;
-#endif
 
 /**
  * Creates a class template for a class with specified initialization function.
@@ -62,11 +49,7 @@ SWIGRUNTIME void SWIGV8_AddMemberVariable(SWIGV8_FUNCTION_TEMPLATE class_templ,
  */
 SWIGRUNTIME void SWIGV8_AddStaticFunction(SWIGV8_OBJECT obj, const char* symbol,
   const SwigV8FunctionCallback& _func, v8::Local<v8::Context> context) {
-#if (V8_MAJOR_VERSION-0) < 5
-  obj->Set(SWIGV8_SYMBOL_NEW(symbol), SWIGV8_FUNCTEMPLATE_NEW(_func)->GetFunction());
-#else
   SWIGV8_MAYBE_CHECK(obj->Set(context, SWIGV8_SYMBOL_NEW(symbol), SWIGV8_FUNCTEMPLATE_NEW(_func)->GetFunction(context).ToLocalChecked()));
-#endif
 }
 
 /**
@@ -75,27 +58,15 @@ SWIGRUNTIME void SWIGV8_AddStaticFunction(SWIGV8_OBJECT obj, const char* symbol,
 SWIGRUNTIME void SWIGV8_AddStaticVariable(SWIGV8_OBJECT obj, const char* symbol,
   SwigV8AccessorGetterCallback getter, SwigV8AccessorSetterCallback setter,
   v8::Local<v8::Context> context) {
-#if (V8_MAJOR_VERSION-0) < 5
-  obj->SetAccessor(SWIGV8_SYMBOL_NEW(symbol), getter, setter);
-#else
   SWIGV8_MAYBE_CHECK(obj->SetAccessor(context, SWIGV8_SYMBOL_NEW(symbol), getter, setter));
-#endif
 }
 
-#if (V8_MAJOR_VERSION-0) < 5
-SWIGRUNTIME void JS_veto_set_variable(v8::Local<v8::String> property, v8::Local<v8::Value> value, const SwigV8PropertyCallbackInfoVoid& info)
-#else
 SWIGRUNTIME void JS_veto_set_variable(v8::Local<v8::Name> property, v8::Local<v8::Value> value, const SwigV8PropertyCallbackInfoVoid& info)
-#endif
 {
     char buffer[256];
     char msg[512];
     int res;
 
-#if (V8_MAJOR_VERSION-0) < 5
-    property->WriteUtf8(buffer, 256);
-    res = sprintf(msg, "Tried to write read-only variable: %s.", buffer);
-#else
     v8::Local<v8::String> sproperty;
     if (property->ToString(SWIGV8_CURRENT_CONTEXT()).ToLocal(&sproperty)) {
       SWIGV8_WRITE_UTF8(sproperty, buffer, 256);
@@ -104,7 +75,6 @@ SWIGRUNTIME void JS_veto_set_variable(v8::Local<v8::Name> property, v8::Local<v8
     else {
       res = -1;
     }
-#endif
 
     if(res<0) {
       SWIG_exception(SWIG_ERROR, "Tried to write read-only variable.");
diff --git a/Lib/javascript/v8/javascriptinit.swg b/Lib/javascript/v8/javascriptinit.swg
index 772189787..3bf8c416c 100644
--- a/Lib/javascript/v8/javascriptinit.swg
+++ b/Lib/javascript/v8/javascriptinit.swg
@@ -9,25 +9,17 @@ SWIG_V8_SetModule(v8::Local<v8::Context> context, swig_module_info *swig_module)
   v8::Local<v8::Object> global_obj = context->Global();
   v8::Local<v8::External> mod = SWIGV8_EXTERNAL_NEW(swig_module);
   assert(!mod.IsEmpty());
-#if (V8_MAJOR_VERSION-0) < 5
-  global_obj->SetHiddenValue(SWIGV8_STRING_NEW("swig_module_info_data"), mod);
-#else
   v8::Local<v8::Private> privateKey = v8::Private::ForApi(v8::Isolate::GetCurrent(), SWIGV8_STRING_NEW("swig_module_info_data"));
   global_obj->SetPrivate(context, privateKey, mod);
-#endif
 }
 
 SWIGRUNTIME swig_module_info *
 SWIG_V8_GetModule(v8::Local<v8::Context> context) {
   v8::Local<v8::Object> global_obj = context->Global();
-#if (V8_MAJOR_VERSION-0) < 5
-  v8::Local<v8::Value> moduleinfo = global_obj->GetHiddenValue(SWIGV8_STRING_NEW("swig_module_info_data"));
-#else
   v8::Local<v8::Private> privateKey = v8::Private::ForApi(v8::Isolate::GetCurrent(), SWIGV8_STRING_NEW("swig_module_info_data"));
   v8::Local<v8::Value> moduleinfo;
   if (!global_obj->GetPrivate(context, privateKey).ToLocal(&moduleinfo))
     return 0;
-#endif
 
   if (moduleinfo.IsEmpty() || moduleinfo->IsNull() || moduleinfo->IsUndefined())
   {
diff --git a/Lib/javascript/v8/javascriptrun.swg b/Lib/javascript/v8/javascriptrun.swg
index 2df342416..518b19a8f 100644
--- a/Lib/javascript/v8/javascriptrun.swg
+++ b/Lib/javascript/v8/javascriptrun.swg
@@ -4,56 +4,26 @@
  * Useful table of versions: https://nodejs.org/en/download/releases/
  * ---------------------------------------------------------------------------*/
 
-// First v8 version that uses "SetWeak" and not "MakeWeak"
-
-#define SWIGV8_SETWEAK_VERSION 0x032224
-
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031803)
-#define SWIGV8_STRING_NEW2(cstr, len) v8::String::New(cstr, len)
-#elif (SWIG_V8_VERSION < 0x0704)
+#if (SWIG_V8_VERSION < 0x0704)
 #define SWIGV8_STRING_NEW2(cstr, len) v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), cstr, v8::String::kNormalString, len)
 #else
 #define SWIGV8_STRING_NEW2(cstr, len) (v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), cstr, v8::NewStringType::kNormal, len)).ToLocalChecked()
 #endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-typedef v8::Handle<v8::Value> SwigV8ReturnValue;
-typedef v8::Arguments SwigV8Arguments;
-typedef v8::AccessorInfo SwigV8PropertyCallbackInfo;
-#define SWIGV8_RETURN(val) return scope.Close(val)
-#define SWIGV8_RETURN_INFO(val, info) return scope.Close(val)
-#else
 typedef void SwigV8ReturnValue;
 typedef v8::FunctionCallbackInfo<v8::Value> SwigV8Arguments;
 typedef v8::PropertyCallbackInfo<v8::Value> SwigV8PropertyCallbackInfo;
 #define SWIGV8_RETURN(val) args.GetReturnValue().Set(val); return
 #define SWIGV8_RETURN_INFO(val, info) info.GetReturnValue().Set(val); return
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032117)
-#define SWIGV8_HANDLESCOPE() v8::HandleScope scope
-#define SWIGV8_HANDLESCOPE_ESC() v8::HandleScope scope
-#define SWIGV8_ESCAPE(val) return scope.Close(val)
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032224)
-#define SWIGV8_HANDLESCOPE() v8::HandleScope scope(v8::Isolate::GetCurrent());
-#define SWIGV8_HANDLESCOPE_ESC() v8::HandleScope scope(v8::Isolate::GetCurrent());
-#define SWIGV8_ESCAPE(val) return scope.Close(val)
-#else
 #define SWIGV8_HANDLESCOPE() v8::HandleScope scope(v8::Isolate::GetCurrent());
 #define SWIGV8_HANDLESCOPE_ESC() v8::EscapableHandleScope scope(v8::Isolate::GetCurrent());
 #define SWIGV8_ESCAPE(val) return scope.Escape(val)
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032224)
-#define SWIGV8_ADJUST_MEMORY(size) v8::V8::AdjustAmountOfExternalAllocatedMemory(size)
-#define SWIGV8_CURRENT_CONTEXT() v8::Context::GetCurrent()
-#define SWIGV8_THROW_EXCEPTION(err) v8::ThrowException(err)
-#define SWIGV8_STRING_NEW(str) v8::String::New(str)
-#define SWIGV8_SYMBOL_NEW(sym) v8::String::NewSymbol(sym)
-#else
 #define SWIGV8_ADJUST_MEMORY(size) v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(size)
 #define SWIGV8_CURRENT_CONTEXT() v8::Isolate::GetCurrent()->GetCurrentContext()
 #define SWIGV8_THROW_EXCEPTION(err) v8::Isolate::GetCurrent()->ThrowException(err)
+
 #if (SWIG_V8_VERSION < 0x0704)
 #define SWIGV8_STRING_NEW(str) v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), str, v8::String::kNormalString)
 #define SWIGV8_SYMBOL_NEW(sym) v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), sym, v8::String::kNormalString)
@@ -61,37 +31,13 @@ typedef v8::PropertyCallbackInfo<v8::Value> SwigV8PropertyCallbackInfo;
 #define SWIGV8_STRING_NEW(str) (v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), str, v8::NewStringType::kNormal)).ToLocalChecked()
 #define SWIGV8_SYMBOL_NEW(sym) (v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), sym, v8::NewStringType::kNormal)).ToLocalChecked()
 #endif
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 5
-#define SWIGV8_MAYBE_CHECK(maybe) maybe
-#elif (SWIG_V8_VERSION < 0x0704)
+#if (SWIG_V8_VERSION < 0x0704)
 #define SWIGV8_MAYBE_CHECK(maybe) maybe.FromJust()
 #else
 #define SWIGV8_MAYBE_CHECK(maybe) maybe.Check()
 #endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032318)
-#define SWIGV8_ARRAY_NEW(size) v8::Array::New(size)
-#define SWIGV8_BOOLEAN_NEW(bool) v8::Boolean::New(bool)
-#define SWIGV8_EXTERNAL_NEW(val) v8::External::New(val)
-#define SWIGV8_FUNCTEMPLATE_NEW(func) v8::FunctionTemplate::New(func)
-#define SWIGV8_FUNCTEMPLATE_NEW_VOID() v8::FunctionTemplate::New()
-#define SWIGV8_INT32_NEW(num) v8::Int32::New(num)
-#define SWIGV8_INTEGER_NEW(num) v8::Integer::New(num)
-#define SWIGV8_INTEGER_NEW_UNS(num) v8::Integer::NewFromUnsigned(num)
-#define SWIGV8_NUMBER_NEW(num) v8::Number::New(num)
-#define SWIGV8_OBJECT_NEW() v8::Object::New()
-#define SWIGV8_UNDEFINED() v8::Undefined()
-#define SWIGV8_ARRAY v8::Handle<v8::Array>
-#define SWIGV8_FUNCTION_TEMPLATE v8::Handle<v8::FunctionTemplate>
-#define SWIGV8_OBJECT v8::Handle<v8::Object>
-#define SWIGV8_OBJECT_TEMPLATE v8::Handle<v8::ObjectTemplate>
-#define SWIGV8_VALUE v8::Handle<v8::Value>
-#define SWIGV8_NULL() v8::Null()
-#define SWIGV8_ARRAY_GET(array, index) (array)->Get(index)
-#define SWIGV8_ARRAY_SET(array, index, value) (array)->Set(index, value)
-#else
 #define SWIGV8_ARRAY_NEW(size) v8::Array::New(v8::Isolate::GetCurrent(), size)
 #define SWIGV8_BOOLEAN_NEW(bool) v8::Boolean::New(v8::Isolate::GetCurrent(), bool)
 #define SWIGV8_EXTERNAL_NEW(val) v8::External::New(v8::Isolate::GetCurrent(), val)
@@ -111,17 +57,10 @@ typedef v8::PropertyCallbackInfo<v8::Value> SwigV8PropertyCallbackInfo;
 #define SWIGV8_NULL() v8::Null(v8::Isolate::GetCurrent())
 #define SWIGV8_ARRAY_GET(array, index) (array)->Get(SWIGV8_CURRENT_CONTEXT(), index).ToLocalChecked()
 #define SWIGV8_ARRAY_SET(array, index, value) SWIGV8_MAYBE_CHECK((array)->Set(SWIGV8_CURRENT_CONTEXT(), index, value))
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-#define SWIGV8_SET_CLASS_TEMPL(class_templ, class) class_templ = v8::Persistent<v8::FunctionTemplate>::New(class);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-#define SWIGV8_SET_CLASS_TEMPL(class_templ, class) class_templ = v8::Persistent<v8::FunctionTemplate>::New(v8::Isolate::GetCurrent(), class);
-#else
 #define SWIGV8_SET_CLASS_TEMPL(class_templ, class) class_templ.Reset(v8::Isolate::GetCurrent(), class);
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 6 || (SWIG_V8_VERSION < 0x0608)
+#if SWIG_V8_VERSION < 0x0608
 #define SWIGV8_TO_OBJECT(handle) (handle)->ToObject()
 #define SWIGV8_TO_STRING(handle) (handle)->ToString()
 #define SWIGV8_NUMBER_VALUE(handle) (handle)->NumberValue()
@@ -208,23 +147,8 @@ public:
   };
 
   ~SWIGV8_Proxy() {
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-    handle.ClearWeak();
-    handle.Dispose();
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032100)
-    handle.ClearWeak(v8::Isolate::GetCurrent());
-    handle.Dispose(v8::Isolate::GetCurrent());
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < SWIGV8_SETWEAK_VERSION)
-    handle.ClearWeak();
-    handle.Dispose();
-#else    
     handle.ClearWeak();
     handle.Reset();
-#endif
-
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < SWIGV8_SETWEAK_VERSION)
-    handle.Clear();
-#endif
 
     SWIGV8_ADJUST_MEMORY(-SWIGV8_AVG_OBJ_SIZE);
   }
@@ -239,17 +163,7 @@ class SWIGV8_ClientData {
 public:
   v8::Persistent<v8::FunctionTemplate> class_templ;
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-  void (*dtor) (v8::Persistent< v8::Value> object, void *parameter);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-  void (*dtor) (v8::Isolate *isolate, v8::Persistent< v8::Value> object, void *parameter);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < SWIGV8_SETWEAK_VERSION)
-  void (*dtor) (v8::Isolate *isolate, v8::Persistent< v8::Object > *object, SWIGV8_Proxy *proxy);
-#elif (V8_MAJOR_VERSION-0) < 5
-  void (*dtor) (const v8::WeakCallbackData<v8::Object, SWIGV8_Proxy> &data);
-#else
   void (*dtor) (const v8::WeakCallbackInfo<SWIGV8_Proxy> &data);
-#endif
 };
 
 SWIGRUNTIME v8::Persistent<v8::FunctionTemplate> SWIGV8_SWIGTYPE_Proxy_class_templ;
@@ -259,12 +173,7 @@ SWIGRUNTIME int SWIG_V8_ConvertInstancePtr(SWIGV8_OBJECT objRef, void **ptr, swi
 
   if(objRef->InternalFieldCount() < 1) return SWIG_ERROR;
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031511)
-  v8::Handle<v8::Value> cdataRef = objRef->GetInternalField(0);
-  SWIGV8_Proxy *cdata = static_cast<SWIGV8_Proxy *>(v8::External::Unwrap(cdataRef));
-#else
   SWIGV8_Proxy *cdata = static_cast<SWIGV8_Proxy *>(objRef->GetAlignedPointerFromInternalField(0));
-#endif
 
   if(cdata == NULL) {
     return SWIG_ERROR;
@@ -292,22 +201,8 @@ SWIGRUNTIME int SWIG_V8_ConvertInstancePtr(SWIGV8_OBJECT objRef, void **ptr, swi
 }
 
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-SWIGRUNTIME void SWIGV8_Proxy_DefaultDtor(v8::Persistent< v8::Value > object, void *parameter) {
-  SWIGV8_Proxy *proxy = static_cast<SWIGV8_Proxy *>(parameter);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-SWIGRUNTIME void SWIGV8_Proxy_DefaultDtor(v8::Isolate *, v8::Persistent< v8::Value > object, void *parameter) {
-  SWIGV8_Proxy *proxy = static_cast<SWIGV8_Proxy *>(parameter);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < SWIGV8_SETWEAK_VERSION)
-SWIGRUNTIME void SWIGV8_Proxy_DefaultDtor(v8::Isolate *, v8::Persistent< v8::Object > *object, SWIGV8_Proxy *proxy) {
-#elif (V8_MAJOR_VERSION-0) < 5
-SWIGRUNTIME void SWIGV8_Proxy_DefaultDtor(const v8::WeakCallbackData<v8::Object, SWIGV8_Proxy> &data) {
-  SWIGV8_Proxy *proxy = data.GetParameter();
-#else
 SWIGRUNTIME void SWIGV8_Proxy_DefaultDtor(const v8::WeakCallbackInfo<SWIGV8_Proxy> &data) {
   SWIGV8_Proxy *proxy = data.GetParameter();
-#endif
-
   delete proxy;
 }
 
@@ -319,12 +214,7 @@ SWIGRUNTIME int SWIG_V8_GetInstancePtr(SWIGV8_VALUE valRef, void **ptr) {
 
   if(objRef->InternalFieldCount() < 1) return SWIG_ERROR;
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031511)
-  v8::Handle<v8::Value> cdataRef = objRef->GetInternalField(0);
-  SWIGV8_Proxy *cdata = static_cast<SWIGV8_Proxy *>(v8::External::Unwrap(cdataRef));
-#else
   SWIGV8_Proxy *cdata = static_cast<SWIGV8_Proxy *>(objRef->GetAlignedPointerFromInternalField(0));
-#endif
 
   if(cdata == NULL) {
     return SWIG_ERROR;
@@ -341,58 +231,17 @@ SWIGRUNTIME void SWIGV8_SetPrivateData(SWIGV8_OBJECT obj, void *ptr, swig_type_i
   cdata->swigCMemOwn = (flags & SWIG_POINTER_OWN) ? 1 : 0;
   cdata->info = info;
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031511)
-  obj->SetPointerInInternalField(0, cdata);
-#else
   obj->SetAlignedPointerInInternalField(0, cdata);
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-  cdata->handle = v8::Persistent<v8::Object>::New(obj);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-  cdata->handle = v8::Persistent<v8::Object>::New(v8::Isolate::GetCurrent(), obj);
-#else
   cdata->handle.Reset(v8::Isolate::GetCurrent(), obj);
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-  // clientdata must be set for owned data as we need to register the dtor
-  if(cdata->swigCMemOwn && (SWIGV8_ClientData*)info->clientdata) {
-    cdata->handle.MakeWeak(cdata, ((SWIGV8_ClientData*)info->clientdata)->dtor);
-  } else {
-    cdata->handle.MakeWeak(cdata, SWIGV8_Proxy_DefaultDtor);
-  }
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031918)
-  if(cdata->swigCMemOwn && (SWIGV8_ClientData*)info->clientdata) {
-    cdata->handle.MakeWeak(v8::Isolate::GetCurrent(), cdata, ((SWIGV8_ClientData*)info->clientdata)->dtor);
-  } else {
-    cdata->handle.MakeWeak(v8::Isolate::GetCurrent(), cdata, SWIGV8_Proxy_DefaultDtor);
-  }
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < SWIGV8_SETWEAK_VERSION)
-  if(cdata->swigCMemOwn && (SWIGV8_ClientData*)info->clientdata) {
-    cdata->handle.MakeWeak(cdata, ((SWIGV8_ClientData*)info->clientdata)->dtor);
-  } else {
-    cdata->handle.MakeWeak(cdata, SWIGV8_Proxy_DefaultDtor);
-  }
-#elif (V8_MAJOR_VERSION-0) < 5
-  if(cdata->swigCMemOwn && (SWIGV8_ClientData*)info->clientdata) {
-    cdata->handle.SetWeak(cdata, ((SWIGV8_ClientData*)info->clientdata)->dtor);
-  } else {
-    cdata->handle.SetWeak(cdata, SWIGV8_Proxy_DefaultDtor);
-  }
-#else
   if(cdata->swigCMemOwn && (SWIGV8_ClientData*)info->clientdata) {
     cdata->handle.SetWeak(cdata, ((SWIGV8_ClientData*)info->clientdata)->dtor, v8::WeakCallbackType::kParameter);
   } else {
     cdata->handle.SetWeak(cdata, SWIGV8_Proxy_DefaultDtor, v8::WeakCallbackType::kParameter);
   }
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-  cdata->handle.MarkIndependent();
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032100)
-  cdata->handle.MarkIndependent(v8::Isolate::GetCurrent());
-#elif (SWIG_V8_VERSION < 0x0704)
+#if (SWIG_V8_VERSION < 0x0704)
   cdata->handle.MarkIndependent();
 // Looks like future versions do not require that anymore:
 // https://monorail-prod.appspot.com/p/chromium/issues/detail?id=923361#c11
@@ -420,21 +269,10 @@ SWIGRUNTIME SWIGV8_VALUE SWIG_V8_NewPointerObj(void *ptr, swig_type_info *info,
   SWIGV8_FUNCTION_TEMPLATE class_templ;
 
   if (ptr == NULL) {
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-    SWIGV8_ESCAPE(SWIGV8_NULL());
-#else    
     v8::Local<v8::Primitive> result = SWIGV8_NULL();
     SWIGV8_ESCAPE(result);
-#endif
   }
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-  if(info->clientdata != 0) {
-    class_templ = ((SWIGV8_ClientData*) info->clientdata)->class_templ;
-  } else {
-    class_templ = SWIGV8_SWIGTYPE_Proxy_class_templ;
-  }
-#else
   v8::Isolate *isolate = v8::Isolate::GetCurrent();
 
   if(info->clientdata != 0) {
@@ -442,13 +280,8 @@ SWIGRUNTIME SWIGV8_VALUE SWIG_V8_NewPointerObj(void *ptr, swig_type_info *info,
   } else {
     class_templ = v8::Local<v8::FunctionTemplate>::New(isolate, SWIGV8_SWIGTYPE_Proxy_class_templ);
   }
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-  v8::Local<v8::Object> result = class_templ->InstanceTemplate()->NewInstance();
-#else
   v8::Local<v8::Object> result = class_templ->InstanceTemplate()->NewInstance(SWIGV8_CURRENT_CONTEXT()).ToLocalChecked();
-#endif
 
   SWIGV8_SetPrivateData(result, ptr, info, flags);
 
@@ -543,14 +376,10 @@ int SwigV8Packed_Check(SWIGV8_VALUE valRef) {
   
   SWIGV8_OBJECT objRef = SWIGV8_TO_OBJECT(valRef);
   if(objRef->InternalFieldCount() < 1) return false;
-#if (V8_MAJOR_VERSION-0) < 5
-  v8::Handle<v8::Value> flag = objRef->GetHiddenValue(SWIGV8_STRING_NEW("__swig__packed_data__"));
-#else
   v8::Local<v8::Private> privateKey = v8::Private::ForApi(v8::Isolate::GetCurrent(), SWIGV8_STRING_NEW("__swig__packed_data__"));
   v8::Local<v8::Value> flag;
   if (!objRef->GetPrivate(SWIGV8_CURRENT_CONTEXT(), privateKey).ToLocal(&flag))
     return false;
-#endif
   return (flag->IsBoolean() && SWIGV8_BOOLEAN_VALUE(flag));
 }
 
@@ -563,12 +392,7 @@ swig_type_info *SwigV8Packed_UnpackData(SWIGV8_VALUE valRef, void *ptr, size_t s
 
     SWIGV8_OBJECT objRef = SWIGV8_TO_OBJECT(valRef);
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031511)
-    v8::Handle<v8::Value> cdataRef = objRef->GetInternalField(0);
-    sobj = static_cast<SwigV8PackedData*>(v8::External::Unwrap(cdataRef));
-#else
     sobj = static_cast<SwigV8PackedData*>(objRef->GetAlignedPointerFromInternalField(0));
-#endif
     if (sobj == NULL || sobj->size != size) return 0;
     memcpy(ptr, sobj->data, size);
     return sobj->type;
@@ -591,38 +415,9 @@ int SWIGV8_ConvertPacked(SWIGV8_VALUE valRef, void *ptr, size_t sz, swig_type_in
   return SWIG_OK;
 }
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-SWIGRUNTIME void _wrap_SwigV8PackedData_delete(v8::Persistent< v8::Value > object, void *parameter) {
-  SwigV8PackedData *cdata = static_cast<SwigV8PackedData *>(parameter);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-SWIGRUNTIME void _wrap_SwigV8PackedData_delete(v8::Isolate *isolate, v8::Persistent<v8::Value> object, void *parameter) {
-  SwigV8PackedData *cdata = static_cast<SwigV8PackedData *>(parameter);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < SWIGV8_SETWEAK_VERSION)
-SWIGRUNTIME void _wrap_SwigV8PackedData_delete(v8::Isolate *isolate, v8::Persistent<v8::Object> *object, SwigV8PackedData *cdata) {
-#elif (V8_MAJOR_VERSION-0) < 5
-SWIGRUNTIME void _wrap_SwigV8PackedData_delete(const v8::WeakCallbackData<v8::Object, SwigV8PackedData> &data) {
-  v8::Local<v8::Object> object = data.GetValue();
-  SwigV8PackedData *cdata = data.GetParameter();
-#else
 SWIGRUNTIME void _wrap_SwigV8PackedData_delete(const v8::WeakCallbackInfo<SwigV8PackedData> &data) {
   SwigV8PackedData *cdata = data.GetParameter();
-#endif
-
   delete cdata;
-
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-  object.Clear();
-  object.Dispose();
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-  object.Clear();
-  object.Dispose(isolate);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032100)
-  object->Dispose(isolate);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < SWIGV8_SETWEAK_VERSION)
-  object->Dispose();
-#elif (V8_MAJOR_VERSION-0) < 5
-  object.Clear();
-#endif
 }
 
 SWIGRUNTIME
@@ -633,46 +428,16 @@ SWIGV8_VALUE SWIGV8_NewPackedObj(void *data, size_t size, swig_type_info *type)
 //  v8::Handle<v8::Object> obj = SWIGV8_OBJECT_NEW();
   v8::Local<v8::Object> obj = SWIGV8_OBJECT_NEW();
 
-#if (V8_MAJOR_VERSION-0) < 5
-  obj->SetHiddenValue(SWIGV8_STRING_NEW("__swig__packed_data__"), SWIGV8_BOOLEAN_NEW(true));
-#else
   v8::Local<v8::Private> privateKey = v8::Private::ForApi(v8::Isolate::GetCurrent(), SWIGV8_STRING_NEW("__swig__packed_data__"));
   obj->SetPrivate(SWIGV8_CURRENT_CONTEXT(), privateKey, SWIGV8_BOOLEAN_NEW(true));
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031511)
-  obj->SetPointerInInternalField(0, cdata);
-#else
   obj->SetAlignedPointerInInternalField(0, cdata);
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-  cdata->handle = v8::Persistent<v8::Object>::New(obj);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-  cdata->handle = v8::Persistent<v8::Object>::New(v8::Isolate::GetCurrent(), obj);
-#else
   cdata->handle.Reset(v8::Isolate::GetCurrent(), obj);
-#endif
 
-
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-  cdata->handle.MakeWeak(cdata, _wrap_SwigV8PackedData_delete);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031918)
-  cdata->handle.MakeWeak(v8::Isolate::GetCurrent(), cdata, _wrap_SwigV8PackedData_delete);
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < SWIGV8_SETWEAK_VERSION)
-  cdata->handle.MakeWeak(cdata, _wrap_SwigV8PackedData_delete);
-#elif (V8_MAJOR_VERSION-0) < 5
-  cdata->handle.SetWeak(cdata, _wrap_SwigV8PackedData_delete);
-//  v8::V8::SetWeak(&cdata->handle, cdata, _wrap_SwigV8PackedData_delete);
-#else
   cdata->handle.SetWeak(cdata, _wrap_SwigV8PackedData_delete, v8::WeakCallbackType::kParameter);
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-  cdata->handle.MarkIndependent();
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032100)
-  cdata->handle.MarkIndependent(v8::Isolate::GetCurrent());
-#elif (SWIG_V8_VERSION < 0x0704)
+#if (SWIG_V8_VERSION < 0x0704)
   cdata->handle.MarkIndependent();
 // Looks like future versions do not require that anymore:
 // https://monorail-prod.appspot.com/p/chromium/issues/detail?id=923361#c11
diff --git a/Lib/javascript/v8/javascriptruntime.swg b/Lib/javascript/v8/javascriptruntime.swg
index 59909389e..4e93fc4c1 100644
--- a/Lib/javascript/v8/javascriptruntime.swg
+++ b/Lib/javascript/v8/javascriptruntime.swg
@@ -7,36 +7,8 @@
 // ----------------
 //
 // v8 added version macros V8_MAJOR_VERSION, V8_MINOR_VERSION, V8_BUILD_NUMBER
-// and V8_PATCH_LEVEL in version 4.3.0.  SWIG generated code uses these if
-// they are defined - to support earlier versions you can specify the V8 version
-// in use via the command line when you run SWIG:
-//
-//   swig -c++ -javascript -v8 -DV8_VERSION=0x032530 example.i
-//
-// Or code in the interface file using SWIG_V8_VERSION:
-//
-//   %begin %{#define SWIG_V8_VERSION 0x031110%}
-//
-// This is specified as a hex constant, but the constant is read as pairs of
-// decimal digits, so for V8 3.25.30 use constant 0x032530.  This scheme can't
-// represent components > 99, but this constant is only useful for V8 < 4.3.0,
-// and no V8 versions from that era had a component > 99.
-
-%define %swig_v8_define_version(version)
-%insert("runtime") %{
-#ifndef SWIG_V8_VERSION
-#define SWIG_V8_VERSION version
-#endif
-%}
-%enddef
-
-#ifdef V8_VERSION
-%swig_v8_define_version(V8_VERSION)
-#else
-// HACK: defining a default version
-%swig_v8_define_version(0x031110)
-#endif
-
+// and V8_PATCH_LEVEL in version 4.3.0.  SWIG doesn't support anything that
+// old so SWIG generated code can rely on these.
 
 // Node support
 // ------------
@@ -56,13 +28,11 @@
 %insert(runtime) %{
 #include <v8.h>
 
-#if defined(V8_MAJOR_VERSION) && defined(V8_MINOR_VERSION)
 #undef SWIG_V8_VERSION
 #define SWIG_V8_VERSION ((V8_MAJOR_VERSION / 10) * 4096 + \
                          (V8_MAJOR_VERSION % 10) * 256 + \
                          (V8_MINOR_VERSION / 10) * 16 + \
                          (V8_MINOR_VERSION % 10))
-#endif
 
 #include <errno.h>
 #include <limits.h>
diff --git a/Lib/javascript/v8/javascriptstrings.swg b/Lib/javascript/v8/javascriptstrings.swg
index aaf1b9302..8dc2d945e 100644
--- a/Lib/javascript/v8/javascriptstrings.swg
+++ b/Lib/javascript/v8/javascriptstrings.swg
@@ -7,11 +7,7 @@ SWIGINTERN int
 SWIG_AsCharPtrAndSize(SWIGV8_VALUE valRef, char** cptr, size_t* psize, int *alloc)
 {
   if(valRef->IsString()) {
-%#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-    v8::Handle<v8::String> js_str = v8::Handle<v8::String>::Cast(valRef);
-%#else
     v8::Local<v8::String> js_str = v8::Local<v8::String>::Cast(valRef);
-%#endif
 
     size_t len = SWIGV8_UTF8_LENGTH(js_str) + 1;
     char* cstr = (char*) %new_array(len, char);
@@ -53,11 +49,7 @@ SWIG_FromCharPtrAndSize(const char* carray, size_t size)
       // TODO: handle extra long strings
       return SWIGV8_UNDEFINED();
     } else {
-%#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-      v8::Handle<v8::String> js_str = SWIGV8_STRING_NEW2(carray, size);
-%#else
       v8::Local<v8::String> js_str = SWIGV8_STRING_NEW2(carray, size);
-%#endif
       return js_str;
     }
   } else {
diff --git a/Tools/javascript/v8_shell.cxx b/Tools/javascript/v8_shell.cxx
index 5001bc25a..b74dd7d2b 100644
--- a/Tools/javascript/v8_shell.cxx
+++ b/Tools/javascript/v8_shell.cxx
@@ -13,57 +13,24 @@ typedef int (*V8ExtensionInitializer) (v8::Handle<v8::Object> module);
 
 // Note: these typedefs and defines are used to deal with  v8 API changes since version 3.19.00
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031903)
-typedef v8::Handle<v8::Value> SwigV8ReturnValue;
-typedef v8::Arguments SwigV8Arguments;
-typedef v8::AccessorInfo SwigV8PropertyCallbackInfo;
-#define SWIGV8_RETURN(val) return scope.Close(val)
-#define SWIGV8_RETURN_INFO(val, info) return scope.Close(val)
-#else
 typedef void SwigV8ReturnValue;
 typedef v8::FunctionCallbackInfo<v8::Value> SwigV8Arguments;
 typedef v8::PropertyCallbackInfo<v8::Value> SwigV8PropertyCallbackInfo;
 #define SWIGV8_RETURN(val) args.GetReturnValue().Set(val); return
 #define SWIGV8_RETURN_INFO(val, info) info.GetReturnValue().Set(val); return
-#endif
-
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032117)
-#define SWIGV8_HANDLESCOPE() v8::HandleScope scope
-#define SWIGV8_HANDLESCOPE_ESC() v8::HandleScope scope
-#define SWIGV8_ESCAPE(val) return scope.Close(val)
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032318)
-#define SWIGV8_HANDLESCOPE() v8::HandleScope scope(v8::Isolate::GetCurrent());
-#define SWIGV8_HANDLESCOPE_ESC() v8::HandleScope scope(v8::Isolate::GetCurrent());
-#define SWIGV8_ESCAPE(val) return scope.Close(val)
-#else
 #define SWIGV8_HANDLESCOPE() v8::HandleScope scope(v8::Isolate::GetCurrent());
 #define SWIGV8_HANDLESCOPE_ESC() v8::EscapableHandleScope scope(v8::Isolate::GetCurrent());
 #define SWIGV8_ESCAPE(val) return scope.Escape(val)
-#endif
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x032318)
-#define SWIGV8_CURRENT_CONTEXT() v8::Context::GetCurrent()
-#define SWIGV8_STRING_NEW(str) v8::String::New(str)
-#define SWIGV8_FUNCTEMPLATE_NEW(func) v8::FunctionTemplate::New(func)
-#define SWIGV8_OBJECT_NEW() v8::Object::New()
-#define SWIGV8_EXTERNAL_NEW(val) v8::External::New(val)
-#define SWIGV8_UNDEFINED() v8::Undefined()
-#else
 #define SWIGV8_CURRENT_CONTEXT() v8::Isolate::GetCurrent()->GetCurrentContext()
 #define SWIGV8_STRING_NEW(str) v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), str)
 #define SWIGV8_FUNCTEMPLATE_NEW(func) v8::FunctionTemplate::New(v8::Isolate::GetCurrent(), func)
 #define SWIGV8_OBJECT_NEW() v8::Object::New(v8::Isolate::GetCurrent())
 #define SWIGV8_EXTERNAL_NEW(val) v8::External::New(v8::Isolate::GetCurrent(), val)
 #define SWIGV8_UNDEFINED() v8::Undefined(v8::Isolate::GetCurrent())
-#endif
-
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-typedef v8::Persistent<v8::Context> SwigV8Context;
-#else
 typedef v8::Local<v8::Context> SwigV8Context;
-#endif
 
 class V8Shell: public JSShell {
 
@@ -149,13 +116,7 @@ bool V8Shell::RunScript(const std::string &scriptPath) {
 
   context->Exit();
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-    context.Dispose();
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-    context.Dispose(v8::Isolate::GetCurrent());
-#else
 //    context.Dispose();
-#endif
 
 //  v8::V8::Dispose();
 
@@ -193,13 +154,7 @@ bool V8Shell::RunShell() {
 
   context->Exit();
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031710)
-    context.Dispose();
-#elif (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-    context.Dispose(v8::Isolate::GetCurrent());
-#else
 //    context.Dispose();
-#endif
 
 //  v8::V8::Dispose();
 
@@ -249,13 +204,8 @@ SwigV8Context V8Shell::CreateShellContext() {
   global->Set(SWIGV8_STRING_NEW("require"), SWIGV8_FUNCTEMPLATE_NEW(V8Shell::Require));
   global->Set(SWIGV8_STRING_NEW("version"), SWIGV8_FUNCTEMPLATE_NEW(V8Shell::Version));
 
-#if (V8_MAJOR_VERSION-0) < 4 && (SWIG_V8_VERSION < 0x031900)
-  SwigV8Context context = v8::Context::New(NULL, global);
-  return context;
-#else
   SwigV8Context context = v8::Context::New(v8::Isolate::GetCurrent(), NULL, global);
   return context;
-#endif
 }
 
 v8::Handle<v8::Value> V8Shell::Import(const std::string &module_path)