src: update to v8 3.24 APIs

35 files changed, 436 insertions, 372 deletions

diff --git a/src/cares_wrap.cc b/src/cares_wrap.cc
index 567b159807..1b998694a9 100644
--- a/src/cares_wrap.cc
+++ b/src/cares_wrap.cc
@@ -50,6 +50,7 @@ namespace cares_wrap {
 
 using v8::Array;
 using v8::Context;
+using v8::EscapableHandleScope;
 using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::Handle;
@@ -194,8 +195,8 @@ static void ares_sockstate_cb(void* data,
 
 
 static Local<Array> HostentToAddresses(Environment* env, struct hostent* host) {
-  HandleScope scope(env->isolate());
-  Local<Array> addresses = Array::New();
+  EscapableHandleScope scope(env->isolate());
+  Local<Array> addresses = Array::New(env->isolate());
 
   char ip[INET6_ADDRSTRLEN];
   for (uint32_t i = 0; host->h_addr_list[i] != NULL; ++i) {
@@ -204,20 +205,20 @@ static Local<Array> HostentToAddresses(Environment* env, struct hostent* host) {
     addresses->Set(i, address);
   }
 
-  return scope.Close(addresses);
+  return scope.Escape(addresses);
 }
 
 
 static Local<Array> HostentToNames(Environment* env, struct hostent* host) {
-  HandleScope scope(env->isolate());
-  Local<Array> names = Array::New();
+  EscapableHandleScope scope(env->isolate());
+  Local<Array> names = Array::New(env->isolate());
 
   for (uint32_t i = 0; host->h_aliases[i] != NULL; ++i) {
     Local<String> address = OneByteString(env->isolate(), host->h_aliases[i]);
     names->Set(i, address);
   }
 
-  return scope.Close(names);
+  return scope.Escape(names);
 }
 
 
@@ -229,7 +230,7 @@ class QueryWrap : public AsyncWrap {
 
   virtual ~QueryWrap() {
     assert(!persistent().IsEmpty());
-    persistent().Dispose();
+    persistent().Reset();
   }
 
   // Subclasses should implement the appropriate Send method.
@@ -278,7 +279,7 @@ class QueryWrap : public AsyncWrap {
     HandleScope handle_scope(env()->isolate());
     Context::Scope context_scope(env()->context());
     Local<Value> argv[] = {
-      Integer::New(0, env()->isolate()),
+      Integer::New(env()->isolate(), 0),
       answer
     };
     MakeCallback(env()->oncomplete_string(), ARRAY_SIZE(argv), argv);
@@ -288,7 +289,7 @@ class QueryWrap : public AsyncWrap {
     HandleScope handle_scope(env()->isolate());
     Context::Scope context_scope(env()->context());
     Local<Value> argv[] = {
-      Integer::New(0, env()->isolate()),
+      Integer::New(env()->isolate(), 0),
       answer,
       family
     };
@@ -452,7 +453,7 @@ class QueryCnameWrap: public QueryWrap {
 
     // A cname lookup always returns a single record but we follow the
     // common API here.
-    Local<Array> result = Array::New(1);
+    Local<Array> result = Array::New(env()->isolate(), 1);
     result->Set(0, OneByteString(env()->isolate(), host->h_name));
     ares_free_hostent(host);
 
@@ -489,17 +490,17 @@ class QueryMxWrap: public QueryWrap {
       return;
     }
 
-    Local<Array> mx_records = Array::New();
+    Local<Array> mx_records = Array::New(env()->isolate());
     Local<String> exchange_symbol = env()->exchange_string();
     Local<String> priority_symbol = env()->priority_string();
 
     ares_mx_reply* current = mx_start;
     for (uint32_t i = 0; current != NULL; ++i, current = current->next) {
-      Local<Object> mx_record = Object::New();
+      Local<Object> mx_record = Object::New(env()->isolate());
       mx_record->Set(exchange_symbol,
                      OneByteString(env()->isolate(), current->host));
       mx_record->Set(priority_symbol,
-                     Integer::New(current->priority, env()->isolate()));
+                     Integer::New(env()->isolate(), current->priority));
       mx_records->Set(i, mx_record);
     }
 
@@ -574,7 +575,7 @@ class QueryTxtWrap: public QueryWrap {
       return;
     }
 
-    Local<Array> txt_records = Array::New();
+    Local<Array> txt_records = Array::New(env()->isolate());
 
     ares_txt_reply* current = txt_out;
     for (uint32_t i = 0; current != NULL; ++i, current = current->next) {
@@ -617,7 +618,7 @@ class QuerySrvWrap: public QueryWrap {
       return;
     }
 
-    Local<Array> srv_records = Array::New();
+    Local<Array> srv_records = Array::New(env()->isolate());
     Local<String> name_symbol = env()->name_string();
     Local<String> port_symbol = env()->port_string();
     Local<String> priority_symbol = env()->priority_string();
@@ -625,15 +626,15 @@ class QuerySrvWrap: public QueryWrap {
 
     ares_srv_reply* current = srv_start;
     for (uint32_t i = 0; current != NULL; ++i, current = current->next) {
-      Local<Object> srv_record = Object::New();
+      Local<Object> srv_record = Object::New(env()->isolate());
       srv_record->Set(name_symbol,
                       OneByteString(env()->isolate(), current->host));
       srv_record->Set(port_symbol,
-                      Integer::New(current->port, env()->isolate()));
+                      Integer::New(env()->isolate(), current->port));
       srv_record->Set(priority_symbol,
-                      Integer::New(current->priority, env()->isolate()));
+                      Integer::New(env()->isolate(), current->priority));
       srv_record->Set(weight_symbol,
-                      Integer::New(current->weight, env()->isolate()));
+                      Integer::New(env()->isolate(), current->weight));
       srv_records->Set(i, srv_record);
     }
 
@@ -672,7 +673,7 @@ class QueryNaptrWrap: public QueryWrap {
       return;
     }
 
-    Local<Array> naptr_records = Array::New();
+    Local<Array> naptr_records = Array::New(env()->isolate());
     Local<String> flags_symbol = env()->flags_string();
     Local<String> service_symbol = env()->service_string();
     Local<String> regexp_symbol = env()->regexp_string();
@@ -682,7 +683,7 @@ class QueryNaptrWrap: public QueryWrap {
 
     ares_naptr_reply* current = naptr_start;
     for (uint32_t i = 0; current != NULL; ++i, current = current->next) {
-      Local<Object> naptr_record = Object::New();
+      Local<Object> naptr_record = Object::New(env()->isolate());
       naptr_record->Set(flags_symbol,
                         OneByteString(env()->isolate(), current->flags));
       naptr_record->Set(service_symbol,
@@ -692,9 +693,9 @@ class QueryNaptrWrap: public QueryWrap {
       naptr_record->Set(replacement_symbol,
                         OneByteString(env()->isolate(), current->replacement));
       naptr_record->Set(order_symbol,
-                        Integer::New(current->order, env()->isolate()));
+                        Integer::New(env()->isolate(), current->order));
       naptr_record->Set(preference_symbol,
-                        Integer::New(current->preference, env()->isolate()));
+                        Integer::New(env()->isolate(), current->preference));
       naptr_records->Set(i, naptr_record);
     }
 
@@ -734,22 +735,22 @@ class QuerySoaWrap: public QueryWrap {
       return;
     }
 
-    Local<Object> soa_record = Object::New();
+    Local<Object> soa_record = Object::New(env()->isolate());
 
     soa_record->Set(env()->nsname_string(),
                     OneByteString(env()->isolate(), soa_out->nsname));
     soa_record->Set(env()->hostmaster_string(),
                     OneByteString(env()->isolate(), soa_out->hostmaster));
     soa_record->Set(env()->serial_string(),
-                    Integer::New(soa_out->serial, env()->isolate()));
+                    Integer::New(env()->isolate(), soa_out->serial));
     soa_record->Set(env()->refresh_string(),
-                    Integer::New(soa_out->refresh, env()->isolate()));
+                    Integer::New(env()->isolate(), soa_out->refresh));
     soa_record->Set(env()->retry_string(),
-                    Integer::New(soa_out->retry, env()->isolate()));
+                    Integer::New(env()->isolate(), soa_out->retry));
     soa_record->Set(env()->expire_string(),
-                    Integer::New(soa_out->expire, env()->isolate()));
+                    Integer::New(env()->isolate(), soa_out->expire));
     soa_record->Set(env()->minttl_string(),
-                    Integer::New(soa_out->minttl, env()->isolate()));
+                    Integer::New(env()->isolate(), soa_out->minttl));
 
     ares_free_data(soa_out);
 
@@ -816,7 +817,7 @@ class GetHostByNameWrap: public QueryWrap {
     HandleScope scope(env()->isolate());
 
     Local<Array> addresses = HostentToAddresses(env(), host);
-    Local<Integer> family = Integer::New(host->h_addrtype, env()->isolate());
+    Local<Integer> family = Integer::New(env()->isolate(), host->h_addrtype);
 
     this->CallOnComplete(addresses, family);
   }
@@ -853,7 +854,7 @@ void AfterGetAddrInfo(uv_getaddrinfo_t* req, int status, struct addrinfo* res) {
   Context::Scope context_scope(env->context());
 
   Local<Value> argv[] = {
-    Integer::New(status, env->isolate()),
+    Integer::New(env->isolate(), status),
     Null(env->isolate())
   };
 
@@ -868,7 +869,7 @@ void AfterGetAddrInfo(uv_getaddrinfo_t* req, int status, struct addrinfo* res) {
     }
 
     // Create the response array.
-    Local<Array> results = Array::New(n);
+    Local<Array> results = Array::New(env->isolate(), n);
 
     char ip[INET6_ADDRSTRLEN];
     const char *addr;
@@ -947,7 +948,7 @@ static void IsIP(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args.GetIsolate());
   HandleScope scope(env->isolate());
 
-  String::AsciiValue ip(args[0]);
+  String::Utf8Value ip(args[0]);
   char address_buffer[sizeof(struct in6_addr)];
 
   int rc = 0;
@@ -1014,7 +1015,7 @@ static void GetServers(const FunctionCallbackInfo<Value>& args) {
   HandleScope handle_scope(args.GetIsolate());
   Environment* env = Environment::GetCurrent(args.GetIsolate());
 
-  Local<Array> server_array = Array::New();
+  Local<Array> server_array = Array::New(env->isolate());
 
   ares_addr_node* servers;
 
@@ -1160,11 +1161,11 @@ static void Initialize(Handle<Object> target,
   NODE_SET_METHOD(target, "setServers", SetServers);
 
   target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "AF_INET"),
-              Integer::New(AF_INET, env->isolate()));
+              Integer::New(env->isolate(), AF_INET));
   target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "AF_INET6"),
-              Integer::New(AF_INET6, env->isolate()));
+              Integer::New(env->isolate(), AF_INET6));
   target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "AF_UNSPEC"),
-              Integer::New(AF_UNSPEC, env->isolate()));
+              Integer::New(env->isolate(), AF_UNSPEC));
 }
 
 }  // namespace cares_wrap
diff --git a/src/env-inl.h b/src/env-inl.h
index bcc7995fa3..9a6199da2f 100644
--- a/src/env-inl.h
+++ b/src/env-inl.h
@@ -70,7 +70,7 @@ inline uint64_t Environment::GCInfo::timestamp() const {
 
 inline Environment::IsolateData* Environment::IsolateData::Get(
     v8::Isolate* isolate) {
-  return static_cast<IsolateData*>(isolate->GetData());
+  return static_cast<IsolateData*>(isolate->GetData(kIsolateSlot));
 }
 
 inline Environment::IsolateData* Environment::IsolateData::GetOrCreate(
@@ -78,7 +78,7 @@ inline Environment::IsolateData* Environment::IsolateData::GetOrCreate(
   IsolateData* isolate_data = Get(isolate);
   if (isolate_data == NULL) {
     isolate_data = new IsolateData(isolate);
-    isolate->SetData(isolate_data);
+    isolate->SetData(kIsolateSlot, isolate_data);
   }
   isolate_data->ref_count_ += 1;
   return isolate_data;
@@ -86,7 +86,7 @@ inline Environment::IsolateData* Environment::IsolateData::GetOrCreate(
 
 inline void Environment::IsolateData::Put() {
   if (--ref_count_ == 0) {
-    isolate()->SetData(NULL);
+    isolate()->SetData(kIsolateSlot, NULL);
     delete this;
   }
 }
@@ -230,8 +230,8 @@ inline Environment::Environment(v8::Local<v8::Context> context)
   // We'll be creating new objects so make sure we've entered the context.
   v8::HandleScope handle_scope(isolate());
   v8::Context::Scope context_scope(context);
-  set_binding_cache_object(v8::Object::New());
-  set_module_load_list_array(v8::Array::New());
+  set_binding_cache_object(v8::Object::New(isolate()));
+  set_module_load_list_array(v8::Array::New(isolate()));
   RB_INIT(&cares_task_list_);
   QUEUE_INIT(&gc_tracker_queue_);
 }
@@ -240,7 +240,7 @@ inline Environment::~Environment() {
   v8::HandleScope handle_scope(isolate());
 
   context()->SetAlignedPointerInEmbedderData(kContextEmbedderDataIndex, NULL);
-#define V(PropertyName, TypeName) PropertyName ## _.Dispose();
+#define V(PropertyName, TypeName) PropertyName ## _.Reset();
   ENVIRONMENT_STRONG_PERSISTENT_PROPERTIES(V)
 #undef V
   isolate_data()->Put();
@@ -370,7 +370,7 @@ inline Environment::IsolateData* Environment::isolate_data() const {
 #define THROW_ERROR(fun)                                                      \
   do {                                                                        \
     v8::HandleScope scope(isolate);                                           \
-    v8::ThrowException(fun(OneByteString(isolate, errmsg)));                 \
+    isolate->ThrowException(fun(OneByteString(isolate, errmsg)));             \
   }                                                                           \
   while (0)
 
@@ -404,7 +404,7 @@ inline void Environment::ThrowErrnoException(int errorno,
                                              const char* syscall,
                                              const char* message,
                                              const char* path) {
-  v8::ThrowException(
+  isolate()->ThrowException(
       ErrnoException(isolate(), errorno, syscall, message, path));
 }
 
@@ -412,7 +412,7 @@ inline void Environment::ThrowUVException(int errorno,
                                           const char* syscall,
                                           const char* message,
                                           const char* path) {
-  v8::ThrowException(
+  isolate()->ThrowException(
       UVException(isolate(), errorno, syscall, message, path));
 }
 
diff --git a/src/env.h b/src/env.h
index 73a810dc70..6a3b5944be 100644
--- a/src/env.h
+++ b/src/env.h
@@ -422,6 +422,8 @@ class Environment {
 #undef V
 
  private:
+  static const int kIsolateSlot = 0;
+
   class GCInfo;
   class IsolateData;
   inline explicit Environment(v8::Local<v8::Context> context);
diff --git a/src/fs_event_wrap.cc b/src/fs_event_wrap.cc
index ee28c44afb..9c1a2b6c6f 100644
--- a/src/fs_event_wrap.cc
+++ b/src/fs_event_wrap.cc
@@ -83,7 +83,7 @@ void FSEventWrap::Initialize(Handle<Object> target,
                              Handle<Context> context) {
   Environment* env = Environment::GetCurrent(context);
 
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(),  New);
   t->InstanceTemplate()->SetInternalFieldCount(1);
   t->SetClassName(env->fsevent_string());
 
@@ -172,7 +172,7 @@ void FSEventWrap::OnEvent(uv_fs_event_t* handle, const char* filename,
   }
 
   Local<Value> argv[] = {
-    Integer::New(status, env->isolate()),
+    Integer::New(env->isolate(), status),
     event_string,
     Null(env->isolate())
   };
diff --git a/src/handle_wrap.cc b/src/handle_wrap.cc
index 3df1e497d3..245c0e10ad 100644
--- a/src/handle_wrap.cc
+++ b/src/handle_wrap.cc
@@ -130,7 +130,7 @@ void HandleWrap::OnClose(uv_handle_t* handle) {
   }
 
   object->SetAlignedPointerInInternalField(0, NULL);
-  wrap->persistent().Dispose();
+  wrap->persistent().Reset();
   delete wrap;
 }
 
diff --git a/src/node.cc b/src/node.cc
index 0acdd22ad3..61041aeb42 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -93,6 +93,7 @@ using v8::Array;
 using v8::ArrayBuffer;
 using v8::Boolean;
 using v8::Context;
+using v8::EscapableHandleScope;
 using v8::Exception;
 using v8::Function;
 using v8::FunctionCallbackInfo;
@@ -110,7 +111,6 @@ using v8::Object;
 using v8::ObjectTemplate;
 using v8::PropertyCallbackInfo;
 using v8::String;
-using v8::ThrowException;
 using v8::TryCatch;
 using v8::Uint32;
 using v8::V8;
@@ -707,7 +707,7 @@ Local<Value> ErrnoException(Isolate* isolate,
   }
 
   Local<Object> obj = e->ToObject();
-  obj->Set(env->errno_string(), Integer::New(errorno, env->isolate()));
+  obj->Set(env->errno_string(), Integer::New(env->isolate(), errorno));
   obj->Set(env->code_string(), estring);
 
   if (path != NULL) {
@@ -770,7 +770,7 @@ Local<Value> UVException(Isolate* isolate,
 
   Local<Object> obj = e->ToObject();
   // TODO(piscisaureus) errno should probably go
-  obj->Set(env->errno_string(), Integer::New(errorno, env->isolate()));
+  obj->Set(env->errno_string(), Integer::New(env->isolate(), errorno));
   obj->Set(env->code_string(), estring);
 
   if (path != NULL) {
@@ -835,7 +835,7 @@ Local<Value> WinapiErrnoException(Isolate* isolate,
   }
 
   Local<Object> obj = e->ToObject();
-  obj->Set(env->errno_string(), Integer::New(errorno, isolate));
+  obj->Set(env->errno_string(), Integer::New(isolate, errorno));
 
   if (path != NULL) {
     obj->Set(env->path_string(), String::NewFromUtf8(isolate, path));
@@ -1150,11 +1150,12 @@ Handle<Value> MakeCallback(Isolate* isolate,
                            const char* method,
                            int argc,
                            Handle<Value> argv[]) {
-  HandleScope handle_scope(isolate);
+  EscapableHandleScope handle_scope(isolate);
   Local<Context> context = recv->CreationContext();
   Environment* env = Environment::GetCurrent(context);
   Context::Scope context_scope(context);
-  return handle_scope.Close(MakeCallback(env, recv, method, argc, argv));
+  return handle_scope.Escape(
+      Local<Value>::New(isolate, MakeCallback(env, recv, method, argc, argv)));
 }
 
 
@@ -1163,11 +1164,12 @@ Handle<Value> MakeCallback(Isolate* isolate,
                            Handle<String> symbol,
                            int argc,
                            Handle<Value> argv[]) {
-  HandleScope handle_scope(isolate);
+  EscapableHandleScope handle_scope(isolate);
   Local<Context> context = recv->CreationContext();
   Environment* env = Environment::GetCurrent(context);
   Context::Scope context_scope(context);
-  return handle_scope.Close(MakeCallback(env, recv, symbol, argc, argv));
+  return handle_scope.Escape(
+      Local<Value>::New(isolate, MakeCallback(env, recv, symbol, argc, argv)));
 }
 
 
@@ -1176,12 +1178,13 @@ Handle<Value> MakeCallback(Isolate* isolate,
                            Handle<Function> callback,
                            int argc,
                            Handle<Value> argv[]) {
-  HandleScope handle_scope(isolate);
+  EscapableHandleScope handle_scope(isolate);
   Local<Context> context = recv->CreationContext();
   Environment* env = Environment::GetCurrent(context);
   Context::Scope context_scope(context);
-  return handle_scope.Close(
-      MakeCallback(env, recv.As<Value>(), callback, argc, argv));
+  return handle_scope.Escape(Local<Value>::New(
+        isolate,
+        MakeCallback(env, recv.As<Value>(), callback, argc, argv)));
 }
 
 
@@ -1192,9 +1195,10 @@ Handle<Value> MakeDomainCallback(Handle<Object> recv,
   Local<Context> context = recv->CreationContext();
   Environment* env = Environment::GetCurrent(context);
   Context::Scope context_scope(context);
-  HandleScope handle_scope(env->isolate());
-  return handle_scope.Close(
-      MakeDomainCallback(env, recv, callback, argc, argv));
+  EscapableHandleScope handle_scope(env->isolate());
+  return handle_scope.Escape(Local<Value>::New(
+      env->isolate(),
+      MakeDomainCallback(env, recv, callback, argc, argv)));
 }
 
 
@@ -1446,7 +1450,7 @@ static void ReportException(Environment* env, const TryCatch& try_catch) {
 static Local<Value> ExecuteString(Environment* env,
                                   Handle<String> source,
                                   Handle<Value> filename) {
-  HandleScope scope(env->isolate());
+  EscapableHandleScope scope(env->isolate());
   TryCatch try_catch;
 
   // try_catch must be nonverbose to disable FatalException() handler,
@@ -1465,14 +1469,14 @@ static Local<Value> ExecuteString(Environment* env,
     exit(4);
   }
 
-  return scope.Close(result);
+  return scope.Escape(result);
 }
 
 
 static void GetActiveRequests(const FunctionCallbackInfo<Value>& args) {
   HandleScope scope(args.GetIsolate());
 
-  Local<Array> ary = Array::New();
+  Local<Array> ary = Array::New(args.GetIsolate());
   QUEUE* q = NULL;
   int i = 0;
 
@@ -1493,7 +1497,7 @@ void GetActiveHandles(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args.GetIsolate());
   HandleScope scope(env->isolate());
 
-  Local<Array> ary = Array::New();
+  Local<Array> ary = Array::New(env->isolate());
   QUEUE* q = NULL;
   int i = 0;
 
@@ -1774,12 +1778,12 @@ static void GetGroups(const FunctionCallbackInfo<Value>& args) {
     return env->ThrowErrnoException(errno, "getgroups");
   }
 
-  Local<Array> groups_list = Array::New(ngroups);
+  Local<Array> groups_list = Array::New(env->isolate(), ngroups);
   bool seen_egid = false;
   gid_t egid = getegid();
 
   for (int i = 0; i < ngroups; i++) {
-    groups_list->Set(i, Integer::New(groups[i], env->isolate()));
+    groups_list->Set(i, Integer::New(env->isolate(), groups[i]));
     if (groups[i] == egid)
       seen_egid = true;
   }
@@ -1787,7 +1791,7 @@ static void GetGroups(const FunctionCallbackInfo<Value>& args) {
   delete[] groups;
 
   if (seen_egid == false) {
-    groups_list->Set(ngroups, Integer::New(egid, env->isolate()));
+    groups_list->Set(ngroups, Integer::New(env->isolate(), egid));
   }
 
   args.GetReturnValue().Set(groups_list);
@@ -1909,11 +1913,11 @@ void MemoryUsage(const FunctionCallbackInfo<Value>& args) {
   env->isolate()->GetHeapStatistics(&v8_heap_stats);
 
   Local<Integer> heap_total =
-      Integer::NewFromUnsigned(v8_heap_stats.total_heap_size(), env->isolate());
+      Integer::NewFromUnsigned(env->isolate(), v8_heap_stats.total_heap_size());
   Local<Integer> heap_used =
-      Integer::NewFromUnsigned(v8_heap_stats.used_heap_size(), env->isolate());
+      Integer::NewFromUnsigned(env->isolate(), v8_heap_stats.used_heap_size());
 
-  Local<Object> info = Object::New();
+  Local<Object> info = Object::New(env->isolate());
   info->Set(env->rss_string(), Number::New(env->isolate(), rss));
   info->Set(env->heap_total_string(), heap_total);
   info->Set(env->heap_used_string(), heap_used);
@@ -1962,9 +1966,9 @@ void Hrtime(const FunctionCallbackInfo<Value>& args) {
     t -= (seconds * NANOS_PER_SEC) + nanos;
   }
 
-  Local<Array> tuple = Array::New(2);
-  tuple->Set(0, Integer::NewFromUnsigned(t / NANOS_PER_SEC, env->isolate()));
-  tuple->Set(1, Integer::NewFromUnsigned(t % NANOS_PER_SEC, env->isolate()));
+  Local<Array> tuple = Array::New(env->isolate(), 2);
+  tuple->Set(0, Integer::NewFromUnsigned(env->isolate(), t / NANOS_PER_SEC));
+  tuple->Set(1, Integer::NewFromUnsigned(env->isolate(), t % NANOS_PER_SEC));
   args.GetReturnValue().Set(tuple);
 }
 
@@ -2170,7 +2174,7 @@ static void Binding(const FunctionCallbackInfo<Value>& args) {
 
   node_module* mod = get_builtin_module(*module_v);
   if (mod != NULL) {
-    exports = Object::New();
+    exports = Object::New(env->isolate());
     // Internal bindings don't have a "module" object, only exports.
     assert(mod->nm_register_func == NULL);
     assert(mod->nm_context_register_func != NULL);
@@ -2179,11 +2183,11 @@ static void Binding(const FunctionCallbackInfo<Value>& args) {
       env->context(), mod->nm_priv);
     cache->Set(module, exports);
   } else if (!strcmp(*module_v, "constants")) {
-    exports = Object::New();
+    exports = Object::New(env->isolate());
     DefineConstants(exports);
     cache->Set(module, exports);
   } else if (!strcmp(*module_v, "natives")) {
-    exports = Object::New();
+    exports = Object::New(env->isolate());
     DefineJavaScript(env, exports);
     cache->Set(module, exports);
   } else {
@@ -2330,7 +2334,7 @@ static void EnvEnumerator(const PropertyCallbackInfo<Array>& info) {
   while (environ[size])
     size++;
 
-  Local<Array> envarr = Array::New(size);
+  Local<Array> envarr = Array::New(env->isolate(), size);
 
   for (int i = 0; i < size; ++i) {
     const char* var = environ[i];
@@ -2346,7 +2350,7 @@ static void EnvEnumerator(const PropertyCallbackInfo<Array>& info) {
   WCHAR* environment = GetEnvironmentStringsW();
   if (environment == NULL)
     return;  // This should not happen.
-  Local<Array> envarr = Array::New();
+  Local<Array> envarr = Array::New(env->isolate());
   WCHAR* p = environment;
   int i = 0;
   while (*p != NULL) {
@@ -2378,9 +2382,9 @@ static void EnvEnumerator(const PropertyCallbackInfo<Array>& info) {
 
 
 static Handle<Object> GetFeatures(Environment* env) {
-  HandleScope scope(env->isolate());
+  EscapableHandleScope scope(env->isolate());
 
-  Local<Object> obj = Object::New();
+  Local<Object> obj = Object::New(env->isolate());
 #if defined(DEBUG) && DEBUG
   Local<Value> debug = True(env->isolate());
 #else
@@ -2408,9 +2412,9 @@ static Handle<Object> GetFeatures(Environment* env) {
   obj->Set(env->tls_sni_string(), tls_sni);
 
   obj->Set(env->tls_string(),
-           Boolean::New(get_builtin_module("crypto") != NULL));
+           Boolean::New(env->isolate(), get_builtin_module("crypto") != NULL));
 
-  return scope.Close(obj);
+  return scope.Escape(obj);
 }
 
 
@@ -2542,7 +2546,7 @@ void SetupProcessObject(Environment* env,
                     env->module_load_list_array());
 
   // process.versions
-  Local<Object> versions = Object::New();
+  Local<Object> versions = Object::New(env->isolate());
   READONLY_PROPERTY(process, "versions", versions);
 
   const char http_parser_version[] = NODE_STRINGIFY(HTTP_PARSER_VERSION_MAJOR)
@@ -2604,31 +2608,32 @@ void SetupProcessObject(Environment* env,
                     OneByteString(env->isolate(), PLATFORM));
 
   // process.argv
-  Local<Array> arguments = Array::New(argc);
+  Local<Array> arguments = Array::New(env->isolate(), argc);
   for (int i = 0; i < argc; ++i) {
     arguments->Set(i, String::NewFromUtf8(env->isolate(), argv[i]));
   }
   process->Set(env->argv_string(), arguments);
 
   // process.execArgv
-  Local<Array> exec_arguments = Array::New(exec_argc);
+  Local<Array> exec_arguments = Array::New(env->isolate(), exec_argc);
   for (int i = 0; i < exec_argc; ++i) {
     exec_arguments->Set(i, String::NewFromUtf8(env->isolate(), exec_argv[i]));
   }
   process->Set(env->exec_argv_string(), exec_arguments);
 
   // create process.env
-  Local<ObjectTemplate> process_env_template = ObjectTemplate::New();
+  Local<ObjectTemplate> process_env_template =
+      ObjectTemplate::New(env->isolate());
   process_env_template->SetNamedPropertyHandler(EnvGetter,
                                                 EnvSetter,
                                                 EnvQuery,
                                                 EnvDeleter,
                                                 EnvEnumerator,
-                                                Object::New());
+                                                Object::New(env->isolate()));
   Local<Object> process_env = process_env_template->NewInstance();
   process->Set(env->env_string(), process_env);
 
-  READONLY_PROPERTY(process, "pid", Integer::New(getpid(), env->isolate()));
+  READONLY_PROPERTY(process, "pid", Integer::New(env->isolate(), getpid()));
   READONLY_PROPERTY(process, "features", GetFeatures(env));
   process->SetAccessor(env->need_imm_cb_string(),
       NeedImmediateCallbackGetter,
@@ -2732,7 +2737,7 @@ void SetupProcessObject(Environment* env,
   NODE_SET_METHOD(process, "_setupDomainUse", SetupDomainUse);
 
   // values use to cross communicate with processNextTick
-  Local<Object> tick_info_obj = Object::New();
+  Local<Object> tick_info_obj = Object::New(env->isolate());
   tick_info_obj->SetIndexedPropertiesToExternalArrayData(
       env->tick_info()->fields(),
       kExternalUnsignedIntArray,
@@ -2740,7 +2745,7 @@ void SetupProcessObject(Environment* env,
   process->Set(env->tick_info_string(), tick_info_obj);
 
   // pre-set _events object for faster emit checks
-  process->Set(env->events_string(), Object::New());
+  process->Set(env->events_string(), Object::New(env->isolate()));
 }
 
 
@@ -3044,7 +3049,7 @@ static void EnableDebug(Isolate* isolate, bool wait_connect) {
     return;  // Still starting up.
 
   Context::Scope context_scope(env->context());
-  Local<Object> message = Object::New();
+  Local<Object> message = Object::New(env->isolate());
   message->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "cmd"),
                FIXED_ONE_BYTE_STRING(env->isolate(), "NODE_DEBUG_ENABLED"));
   Local<Value> argv[] = {
@@ -3448,7 +3453,7 @@ int EmitExit(Environment* env) {
 
   Local<Value> args[] = {
     env->exit_string(),
-    Integer::New(code, env->isolate())
+    Integer::New(env->isolate(), code)
   };
 
   MakeCallback(env, process_object, "emit", ARRAY_SIZE(args), args);
@@ -3492,7 +3497,7 @@ Environment* CreateEnvironment(Isolate* isolate,
     StartProfilerIdleNotifier(env);
   }
 
-  Local<FunctionTemplate> process_template = FunctionTemplate::New();
+  Local<FunctionTemplate> process_template = FunctionTemplate::New(isolate);
   process_template->SetClassName(FIXED_ONE_BYTE_STRING(isolate, "process"));
 
   Local<Object> process_object = process_template->GetFunction()->NewInstance();
@@ -3538,22 +3543,24 @@ int Start(int argc, char** argv) {
     // environment with Environment::GetCurrentChecked().
     // TODO(bnoordhuis) Reorder the debugger initialization logic so it can
     // be removed.
-    Context::Scope context_scope(env->context());
-    bool more;
-    do {
-      more = uv_run(env->event_loop(), UV_RUN_ONCE);
-      if (more == false) {
-        EmitBeforeExit(env);
-
-        // Emit `beforeExit` if the loop became alive either after emitting
-        // event, or after running some callbacks.
-        more = uv_loop_alive(env->event_loop());
-        if (uv_run(env->event_loop(), UV_RUN_NOWAIT) != 0)
-          more = true;
-      }
-    } while (more == true);
-    code = EmitExit(env);
-    RunAtExit(env);
+    {
+      Context::Scope context_scope(env->context());
+      bool more;
+      do {
+        more = uv_run(env->event_loop(), UV_RUN_ONCE);
+        if (more == false) {
+          EmitBeforeExit(env);
+
+          // Emit `beforeExit` if the loop became alive either after emitting
+          // event, or after running some callbacks.
+          more = uv_loop_alive(env->event_loop());
+          if (uv_run(env->event_loop(), UV_RUN_NOWAIT) != 0)
+            more = true;
+        }
+      } while (more == true);
+      code = EmitExit(env);
+      RunAtExit(env);
+    }
     env->Dispose();
     env = NULL;
   }
diff --git a/src/node.h b/src/node.h
index 03cf155af1..417d1d8e35 100644
--- a/src/node.h
+++ b/src/node.h
@@ -193,7 +193,8 @@ inline void NODE_SET_METHOD(const TypeName& recv,
                             v8::FunctionCallback callback) {
   v8::Isolate* isolate = v8::Isolate::GetCurrent();
   v8::HandleScope handle_scope(isolate);
-  v8::Local<v8::FunctionTemplate> t = v8::FunctionTemplate::New(callback);
+  v8::Local<v8::FunctionTemplate> t = v8::FunctionTemplate::New(isolate,
+                                                                callback);
   v8::Local<v8::Function> fn = t->GetFunction();
   v8::Local<v8::String> fn_name = v8::String::NewFromUtf8(isolate, name);
   fn->SetName(fn_name);
@@ -208,7 +209,8 @@ inline void NODE_SET_PROTOTYPE_METHOD(v8::Handle<v8::FunctionTemplate> recv,
                                       v8::FunctionCallback callback) {
   v8::Isolate* isolate = v8::Isolate::GetCurrent();
   v8::HandleScope handle_scope(isolate);
-  v8::Local<v8::FunctionTemplate> t = v8::FunctionTemplate::New(callback);
+  v8::Local<v8::FunctionTemplate> t = v8::FunctionTemplate::New(isolate,
+                                                                callback);
   recv->PrototypeTemplate()->Set(v8::String::NewFromUtf8(isolate, name),
                                  t->GetFunction());
 }
diff --git a/src/node_buffer.cc b/src/node_buffer.cc
index 8304c4f02f..b1d63ad045 100644
--- a/src/node_buffer.cc
+++ b/src/node_buffer.cc
@@ -63,6 +63,7 @@ namespace Buffer {
 
 using v8::ArrayBuffer;
 using v8::Context;
+using v8::EscapableHandleScope;
 using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
@@ -117,7 +118,7 @@ size_t Length(Handle<Object> obj) {
 
 
 Local<Object> New(Isolate* isolate, Handle<String> string, enum encoding enc) {
-  HandleScope scope(isolate);
+  EscapableHandleScope scope(isolate);
 
   size_t length = StringBytes::Size(isolate, string, enc);
 
@@ -125,25 +126,25 @@ Local<Object> New(Isolate* isolate, Handle<String> string, enum encoding enc) {
   char* data = Buffer::Data(buf);
   StringBytes::Write(isolate, data, length, string, enc);
 
-  return scope.Close(buf);
+  return scope.Escape(buf);
 }
 
 
 Local<Object> New(Isolate* isolate, size_t length) {
-  HandleScope handle_scope(isolate);
+  EscapableHandleScope handle_scope(isolate);
   Local<Object> obj = Buffer::New(Environment::GetCurrent(isolate), length);
-  return handle_scope.Close(obj);
+  return handle_scope.Escape(obj);
 }
 
 
 // TODO(trevnorris): these have a flaw by needing to call the Buffer inst then
 // Alloc. continue to look for a better architecture.
 Local<Object> New(Environment* env, size_t length) {
-  HandleScope scope(env->isolate());
+  EscapableHandleScope scope(env->isolate());
 
   assert(length <= kMaxLength);
 
-  Local<Value> arg = Uint32::NewFromUnsigned(length, env->isolate());
+  Local<Value> arg = Uint32::NewFromUnsigned(env->isolate(), length);
   Local<Object> obj = env->buffer_constructor_function()->NewInstance(1, &arg);
 
   // TODO(trevnorris): done like this to handle HasInstance since only checks
@@ -159,15 +160,15 @@ Local<Object> New(Environment* env, size_t length) {
   }
   smalloc::Alloc(env, obj, data, length);
 
-  return scope.Close(obj);
+  return scope.Escape(obj);
 }
 
 
 Local<Object> New(Isolate* isolate, const char* data, size_t length) {
   Environment* env = Environment::GetCurrent(isolate);
-  HandleScope handle_scope(env->isolate());
+  EscapableHandleScope handle_scope(env->isolate());
   Local<Object> obj = Buffer::New(env, data, length);
-  return handle_scope.Close(obj);
+  return handle_scope.Escape(obj);
 }
 
 
@@ -175,11 +176,11 @@ Local<Object> New(Isolate* isolate, const char* data, size_t length) {
 // but for consistency w/ the other should use data. And a copy version renamed
 // to something else.
 Local<Object> New(Environment* env, const char* data, size_t length) {
-  HandleScope scope(env->isolate());
+  EscapableHandleScope scope(env->isolate());
 
   assert(length <= kMaxLength);
 
-  Local<Value> arg = Uint32::NewFromUnsigned(length, env->isolate());
+  Local<Value> arg = Uint32::NewFromUnsigned(env->isolate(), length);
   Local<Object> obj = env->buffer_constructor_function()->NewInstance(1, &arg);
 
   // TODO(trevnorris): done like this to handle HasInstance since only checks
@@ -197,7 +198,7 @@ Local<Object> New(Environment* env, const char* data, size_t length) {
 
   smalloc::Alloc(env, obj, new_data, length);
 
-  return scope.Close(obj);
+  return scope.Escape(obj);
 }
 
 
@@ -207,9 +208,9 @@ Local<Object> New(Isolate* isolate,
                   smalloc::FreeCallback callback,
                   void* hint) {
   Environment* env = Environment::GetCurrent(isolate);
-  HandleScope handle_scope(env->isolate());
+  EscapableHandleScope handle_scope(env->isolate());
   Local<Object> obj = Buffer::New(env, data, length, callback, hint);
-  return handle_scope.Close(obj);
+  return handle_scope.Escape(obj);
 }
 
 
@@ -218,38 +219,38 @@ Local<Object> New(Environment* env,
                   size_t length,
                   smalloc::FreeCallback callback,
                   void* hint) {
-  HandleScope scope(env->isolate());
+  EscapableHandleScope scope(env->isolate());
 
   assert(length <= kMaxLength);
 
-  Local<Value> arg = Uint32::NewFromUnsigned(length, env->isolate());
+  Local<Value> arg = Uint32::NewFromUnsigned(env->isolate(), length);
   Local<Object> obj = env->buffer_constructor_function()->NewInstance(1, &arg);
 
   smalloc::Alloc(env, obj, data, length, callback, hint);
 
-  return scope.Close(obj);
+  return scope.Escape(obj);
 }
 
 
 Local<Object> Use(Isolate* isolate, char* data, uint32_t length) {
   Environment* env = Environment::GetCurrent(isolate);
-  HandleScope handle_scope(env->isolate());
+  EscapableHandleScope handle_scope(env->isolate());
   Local<Object> obj = Buffer::Use(env, data, length);
-  return handle_scope.Close(obj);
+  return handle_scope.Escape(obj);
 }
 
 
 Local<Object> Use(Environment* env, char* data, uint32_t length) {
-  HandleScope scope(env->isolate());
+  EscapableHandleScope scope(env->isolate());
 
   assert(length <= kMaxLength);
 
-  Local<Value> arg = Uint32::NewFromUnsigned(length, env->isolate());
+  Local<Value> arg = Uint32::NewFromUnsigned(env->isolate(), length);
   Local<Object> obj = env->buffer_constructor_function()->NewInstance(1, &arg);
 
   smalloc::Alloc(env, obj, data, length);
 
-  return scope.Close(obj);
+  return scope.Escape(obj);
 }
 
 
@@ -586,7 +587,7 @@ void ToArrayBuffer(const FunctionCallbackInfo<Value>& args) {
 
   memcpy(adata, obj_data, obj_length);
 
-  Local<ArrayBuffer> abuf = ArrayBuffer::New(adata, obj_length);
+  Local<ArrayBuffer> abuf = ArrayBuffer::New(env->isolate(), adata, obj_length);
   args.GetReturnValue().Set(abuf);
 }
 
@@ -652,7 +653,7 @@ void SetupBufferJS(const FunctionCallbackInfo<Value>& args) {
 
   // for backwards compatibility
   proto->Set(env->offset_string(),
-             Uint32::New(0, env->isolate()),
+             Uint32::New(env->isolate(), 0),
              v8::ReadOnly);
 
   assert(args[1]->IsObject());
@@ -660,7 +661,8 @@ void SetupBufferJS(const FunctionCallbackInfo<Value>& args) {
   Local<Object> internal = args[1].As<Object>();
 
   internal->Set(env->byte_length_string(),
-                FunctionTemplate::New(ByteLength)->GetFunction());
+                FunctionTemplate::New(
+                    env->isolate(), ByteLength)->GetFunction());
 }
 
 
@@ -669,7 +671,8 @@ void Initialize(Handle<Object> target,
                 Handle<Context> context) {
   Environment* env = Environment::GetCurrent(context);
   target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "setupBufferJS"),
-              FunctionTemplate::New(SetupBufferJS)->GetFunction());
+              FunctionTemplate::New(env->isolate(), SetupBufferJS)
+                  ->GetFunction());
 }
 
 
diff --git a/src/node_contextify.cc b/src/node_contextify.cc
index 05d2b11c3f..df63ed4f07 100644
--- a/src/node_contextify.cc
+++ b/src/node_contextify.cc
@@ -35,6 +35,7 @@ using v8::AccessType;
 using v8::Array;
 using v8::Boolean;
 using v8::Context;
+using v8::EscapableHandleScope;
 using v8::External;
 using v8::Function;
 using v8::FunctionCallbackInfo;
@@ -54,10 +55,17 @@ using v8::String;
 using v8::TryCatch;
 using v8::V8;
 using v8::Value;
+using v8::WeakCallbackData;
 
 
 class ContextifyContext {
- private:
+ protected:
+  enum Kind {
+    kSandbox,
+    kContext,
+    kProxyGlobal
+  };
+
   Environment* const env_;
   Persistent<Object> sandbox_;
   Persistent<Context> context_;
@@ -71,28 +79,28 @@ class ContextifyContext {
         context_(env->isolate(), CreateV8Context(env)),
         // Wait for sandbox_, proxy_global_, and context_ to die
         references_(0) {
-    sandbox_.MakeWeak(this, WeakCallback);
+    sandbox_.SetWeak(this, WeakCallback<Object, kSandbox>);
     sandbox_.MarkIndependent();
     references_++;
 
     // Allocation failure or maximum call stack size reached
     if (context_.IsEmpty())
       return;
-    context_.MakeWeak(this, WeakCallback);
+    context_.SetWeak(this, WeakCallback<Context, kContext>);
     context_.MarkIndependent();
     references_++;
 
     proxy_global_.Reset(env->isolate(), context()->Global());
-    proxy_global_.MakeWeak(this, WeakCallback);
+    proxy_global_.SetWeak(this, WeakCallback<Object, kProxyGlobal>);
     proxy_global_.MarkIndependent();
     references_++;
   }
 
 
   ~ContextifyContext() {
-    context_.Dispose();
-    proxy_global_.Dispose();
-    sandbox_.Dispose();
+    context_.Reset();
+    proxy_global_.Reset();
+    sandbox_.Reset();
   }
 
 
@@ -186,20 +194,21 @@ class ContextifyContext {
   // NamedPropertyHandler will store a reference to it forever and keep it
   // from getting gc'd.
   Local<Value> CreateDataWrapper(Environment* env) {
-    HandleScope scope(env->isolate());
+    EscapableHandleScope scope(env->isolate());
     Local<Object> wrapper =
         env->script_data_constructor_function()->NewInstance();
     if (wrapper.IsEmpty())
-      return scope.Close(Handle<Value>());
+      return scope.Escape(Local<Value>::New(env->isolate(), Handle<Value>()));
 
     Wrap<ContextifyContext>(wrapper, this);
-    return scope.Close(wrapper);
+    return scope.Escape(wrapper);
   }
 
 
   Local<Context> CreateV8Context(Environment* env) {
-    HandleScope scope(env->isolate());
-    Local<FunctionTemplate> function_template = FunctionTemplate::New();
+    EscapableHandleScope scope(env->isolate());
+    Local<FunctionTemplate> function_template =
+        FunctionTemplate::New(env->isolate());
     function_template->SetHiddenPrototype(true);
 
     Local<Object> sandbox = PersistentToLocal(env->isolate(), sandbox_);
@@ -215,12 +224,13 @@ class ContextifyContext {
                                              CreateDataWrapper(env));
     object_template->SetAccessCheckCallbacks(GlobalPropertyNamedAccessCheck,
                                              GlobalPropertyIndexedAccessCheck);
-    return scope.Close(Context::New(env->isolate(), NULL, object_template));
+    return scope.Escape(Context::New(env->isolate(), NULL, object_template));
   }
 
 
   static void Init(Environment* env, Local<Object> target) {
-    Local<FunctionTemplate> function_template = FunctionTemplate::New();
+    Local<FunctionTemplate> function_template =
+        FunctionTemplate::New(env->isolate());
     function_template->InstanceTemplate()->SetInternalFieldCount(1);
     env->set_script_data_constructor_function(function_template->GetFunction());
 
@@ -255,7 +265,7 @@ class ContextifyContext {
     if (context->context().IsEmpty())
       return;
 
-    Local<External> hidden_context = External::New(context);
+    Local<External> hidden_context = External::New(env->isolate(), context);
     sandbox->SetHiddenValue(hidden_name, hidden_context);
   }
 
@@ -277,11 +287,16 @@ class ContextifyContext {
   }
 
 
-  template <class T>
-  static void WeakCallback(Isolate* isolate,
-                           Persistent<T>* target,
-                           ContextifyContext* context) {
-    target->ClearWeak();
+  template <class T, Kind kind>
+  static void WeakCallback(const WeakCallbackData<T, ContextifyContext>& data) {
+    ContextifyContext* context = data.GetParameter();
+    if (kind == kSandbox)
+      context->sandbox_.ClearWeak();
+    else if (kind == kContext)
+      context->context_.ClearWeak();
+    else
+      context->proxy_global_.ClearWeak();
+
     if (--context->references_ == 0)
       delete context;
   }
@@ -419,7 +434,8 @@ class ContextifyScript : public BaseObject {
     Local<String> class_name =
         FIXED_ONE_BYTE_STRING(env->isolate(), "ContextifyScript");
 
-    Local<FunctionTemplate> script_tmpl = FunctionTemplate::New(New);
+    Local<FunctionTemplate> script_tmpl = FunctionTemplate::New(env->isolate(),
+                                                                New);
     script_tmpl->InstanceTemplate()->SetInternalFieldCount(1);
     script_tmpl->SetClassName(class_name);
     NODE_SET_PROTOTYPE_METHOD(script_tmpl, "runInContext", RunInContext);
@@ -453,7 +469,7 @@ class ContextifyScript : public BaseObject {
       return;
     }
 
-    Local<Context> context = Context::GetCurrent();
+    Local<Context> context = env->context();
     Context::Scope context_scope(context);
 
     Local<Script> v8_script = Script::New(code, filename);
@@ -657,7 +673,7 @@ class ContextifyScript : public BaseObject {
 
 
   ~ContextifyScript() {
-    script_.Dispose();
+    script_.Reset();
   }
 };
 
diff --git a/src/node_crypto.cc b/src/node_crypto.cc
index 5ae45d8540..eed43fd787 100644
--- a/src/node_crypto.cc
+++ b/src/node_crypto.cc
@@ -91,7 +91,6 @@ using v8::Persistent;
 using v8::PropertyAttribute;
 using v8::PropertyCallbackInfo;
 using v8::String;
-using v8::ThrowException;
 using v8::V8;
 using v8::Value;
 
@@ -226,7 +225,8 @@ bool EntropySource(unsigned char* buffer, size_t length) {
 
 
 void SecureContext::Initialize(Environment* env, Handle<Object> target) {
-  Local<FunctionTemplate> t = FunctionTemplate::New(SecureContext::New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(),
+                                                    SecureContext::New);
   t->InstanceTemplate()->SetInternalFieldCount(1);
   t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "SecureContext"));
 
@@ -713,7 +713,7 @@ void SecureContext::SetSessionIdContext(
     BIO_free_all(bio);
   }
 
-  ThrowException(Exception::TypeError(message));
+  args.GetIsolate()->ThrowException(Exception::TypeError(message));
 }
 
 
@@ -960,7 +960,7 @@ void SSLWrap<Base>::OnClientHello(void* arg,
   HandleScope handle_scope(env->isolate());
   Context::Scope context_scope(env->context());
 
-  Local<Object> hello_obj = Object::New();
+  Local<Object> hello_obj = Object::New(env->isolate());
   Local<Object> buff = Buffer::New(
       env,
       reinterpret_cast<const char*>(hello.session_id()),
@@ -974,7 +974,8 @@ void SSLWrap<Base>::OnClientHello(void* arg,
                                              hello.servername_size());
     hello_obj->Set(env->servername_string(), servername);
   }
-  hello_obj->Set(env->tls_ticket_string(), Boolean::New(hello.has_ticket()));
+  hello_obj->Set(env->tls_ticket_string(),
+                 Boolean::New(env->isolate(), hello.has_ticket()));
 
   Local<Value> argv[] = { hello_obj };
   w->MakeCallback(env->onclienthello_string(), ARRAY_SIZE(argv), argv);
@@ -993,7 +994,7 @@ void SSLWrap<Base>::GetPeerCertificate(
   ClearErrorOnReturn clear_error_on_return;
   (void) &clear_error_on_return;  // Silence unused variable warning.
 
-  Local<Object> info = Object::New();
+  Local<Object> info = Object::New(env->isolate());
   X509* peer_cert = SSL_get_peer_certificate(w->ssl_);
   if (peer_cert != NULL) {
     BIO* bio = BIO_new(BIO_s_mem());
@@ -1100,7 +1101,7 @@ void SSLWrap<Base>::GetPeerCertificate(
     STACK_OF(ASN1_OBJECT)* eku = static_cast<STACK_OF(ASN1_OBJECT)*>(
         X509_get_ext_d2i(peer_cert, NID_ext_key_usage, NULL, NULL));
     if (eku != NULL) {
-      Local<Array> ext_key_usage = Array::New();
+      Local<Array> ext_key_usage = Array::New(env->isolate());
       char buf[256];
 
       int j = 0;
@@ -1211,7 +1212,7 @@ void SSLWrap<Base>::LoadSession(const FunctionCallbackInfo<Value>& args) {
       SSL_SESSION_free(w->next_sess_);
     w->next_sess_ = sess;
 
-    Local<Object> info = Object::New();
+    Local<Object> info = Object::New(env->isolate());
 #ifndef OPENSSL_NO_TLSEXT
     if (sess->tlsext_hostname == NULL) {
       info->Set(env->servername_string(), False(args.GetIsolate()));
@@ -1396,7 +1397,7 @@ void SSLWrap<Base>::GetCurrentCipher(const FunctionCallbackInfo<Value>& args) {
   if (c == NULL)
     return;
 
-  Local<Object> info = Object::New();
+  Local<Object> info = Object::New(env->isolate());
   const char* cipher_name = SSL_CIPHER_get_name(c);
   info->Set(env->name_string(), OneByteString(args.GetIsolate(), cipher_name));
   const char* cipher_version = SSL_CIPHER_get_version(c);
@@ -1444,7 +1445,7 @@ int SSLWrap<Base>::SelectNextProtoCallback(SSL* s,
   Context::Scope context_scope(env->context());
 
   // Release old protocol handler if present
-  w->selected_npn_proto_.Dispose();
+  w->selected_npn_proto_.Reset();
 
   if (w->npn_protos_.IsEmpty()) {
     // We should at least select one protocol
@@ -1690,7 +1691,8 @@ void Connection::NewSessionDoneCb() {
 
 
 void Connection::Initialize(Environment* env, Handle<Object> target) {
-  Local<FunctionTemplate> t = FunctionTemplate::New(Connection::New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(),
+                                                    Connection::New);
   t->InstanceTemplate()->SetInternalFieldCount(1);
   t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "Connection"));
 
@@ -1785,7 +1787,7 @@ int Connection::SelectSNIContextCallback_(SSL *s, int *ad, void* arg) {
 
     // Call the SNI callback and use its return value as context
     if (!conn->sniObject_.IsEmpty()) {
-      conn->sniContext_.Dispose();
+      conn->sniContext_.Reset();
 
       Local<Value> arg = PersistentToLocal(env->isolate(), conn->servername_);
       Local<Value> ret = conn->MakeCallback(env->onselect_string(), 1, &arg);
@@ -2175,7 +2177,7 @@ void Connection::SetSNICallback(const FunctionCallbackInfo<Value>& args) {
     return env->ThrowError("Must give a Function as first argument");
   }
 
-  Local<Object> obj = Object::New();
+  Local<Object> obj = Object::New(env->isolate());
   obj->Set(FIXED_ONE_BYTE_STRING(args.GetIsolate(), "onselect"), args[0]);
   conn->sniObject_.Reset(args.GetIsolate(), obj);
 }
@@ -2183,7 +2185,7 @@ void Connection::SetSNICallback(const FunctionCallbackInfo<Value>& args) {
 
 
 void CipherBase::Initialize(Environment* env, Handle<Object> target) {
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(), New);
 
   t->InstanceTemplate()->SetInternalFieldCount(1);
 
@@ -2557,7 +2559,7 @@ void CipherBase::Final(const FunctionCallbackInfo<Value>& args) {
 
 
 void Hmac::Initialize(Environment* env, v8::Handle<v8::Object> target) {
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(), New);
 
   t->InstanceTemplate()->SetInternalFieldCount(1);
 
@@ -2698,7 +2700,7 @@ void Hmac::HmacDigest(const FunctionCallbackInfo<Value>& args) {
 
 
 void Hash::Initialize(Environment* env, v8::Handle<v8::Object> target) {
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(), New);
 
   t->InstanceTemplate()->SetInternalFieldCount(1);
 
@@ -2853,7 +2855,7 @@ void SignBase::CheckThrow(SignBase::Error error) {
 
 
 void Sign::Initialize(Environment* env, v8::Handle<v8::Object> target) {
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(), New);
 
   t->InstanceTemplate()->SetInternalFieldCount(1);
 
@@ -3037,7 +3039,7 @@ void Sign::SignFinal(const FunctionCallbackInfo<Value>& args) {
 
 
 void Verify::Initialize(Environment* env, v8::Handle<v8::Object> target) {
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(), New);
 
   t->InstanceTemplate()->SetInternalFieldCount(1);
 
@@ -3252,7 +3254,7 @@ void Verify::VerifyFinal(const FunctionCallbackInfo<Value>& args) {
 
 
 void DiffieHellman::Initialize(Environment* env, Handle<Object> target) {
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(), New);
 
   static enum PropertyAttribute attributes =
       static_cast<PropertyAttribute>(v8::ReadOnly | v8::DontDelete);
@@ -3278,7 +3280,8 @@ void DiffieHellman::Initialize(Environment* env, Handle<Object> target) {
   target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "DiffieHellman"),
               t->GetFunction());
 
-  Local<FunctionTemplate> t2 = FunctionTemplate::New(DiffieHellmanGroup);
+  Local<FunctionTemplate> t2 = FunctionTemplate::New(env->isolate(),
+                                                     DiffieHellmanGroup);
   t2->InstanceTemplate()->SetInternalFieldCount(1);
 
   NODE_SET_PROTOTYPE_METHOD(t2, "generateKeys", GenerateKeys);
@@ -3677,7 +3680,7 @@ class PBKDF2Request : public AsyncWrap {
   }
 
   ~PBKDF2Request() {
-    persistent().Dispose();
+    persistent().Reset();
   }
 
   uv_work_t* work_req() {
@@ -3881,7 +3884,7 @@ void PBKDF2(const FunctionCallbackInfo<Value>& args) {
     digest = EVP_sha1();
   }
 
-  obj = Object::New();
+  obj = Object::New(env->isolate());
   req = new PBKDF2Request(env,
                           obj,
                           digest,
@@ -3906,7 +3909,7 @@ void PBKDF2(const FunctionCallbackInfo<Value>& args) {
     EIO_PBKDF2(req);
     EIO_PBKDF2After(req, argv);
     if (argv[0]->IsObject())
-      ThrowException(argv[0]);
+      env->isolate()->ThrowException(argv[0]);
     else
       args.GetReturnValue().Set(argv[1]);
   }
@@ -3932,7 +3935,7 @@ class RandomBytesRequest : public AsyncWrap {
   }
 
   ~RandomBytesRequest() {
-    persistent().Dispose();
+    persistent().Reset();
   }
 
   uv_work_t* work_req() {
@@ -4053,7 +4056,7 @@ void RandomBytes(const FunctionCallbackInfo<Value>& args) {
     return env->ThrowTypeError("size > Buffer::kMaxLength");
   }
 
-  Local<Object> obj = Object::New();
+  Local<Object> obj = Object::New(env->isolate());
   RandomBytesRequest* req = new RandomBytesRequest(env, obj, size);
 
   if (args[1]->IsFunction()) {
@@ -4073,7 +4076,7 @@ void RandomBytes(const FunctionCallbackInfo<Value>& args) {
     delete req;
 
     if (!argv[0]->IsNull())
-      ThrowException(argv[0]);
+      env->isolate()->ThrowException(argv[0]);
     else
       args.GetReturnValue().Set(argv[1]);
   }
@@ -4095,7 +4098,7 @@ void GetSSLCiphers(const FunctionCallbackInfo<Value>& args) {
     return env->ThrowError("SSL_new() failed.");
   }
 
-  Local<Array> arr = Array::New();
+  Local<Array> arr = Array::New(env->isolate());
   STACK_OF(SSL_CIPHER)* ciphers = SSL_get_ciphers(ssl);
 
   for (int i = 0; i < sk_SSL_CIPHER_num(ciphers); ++i) {
@@ -4112,7 +4115,9 @@ void GetSSLCiphers(const FunctionCallbackInfo<Value>& args) {
 
 class CipherPushContext {
  public:
-  explicit CipherPushContext(Environment* env) : arr(Array::New()), env_(env) {
+  explicit CipherPushContext(Environment* env)
+      : arr(Array::New(env->isolate())),
+        env_(env) {
   }
 
   inline Environment* env() const { return env_; }
@@ -4155,7 +4160,7 @@ void GetHashes(const FunctionCallbackInfo<Value>& args) {
 void Certificate::Initialize(Environment* env, Handle<Object> target) {
   HandleScope scope(env->isolate());
 
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(), New);
 
   t->InstanceTemplate()->SetInternalFieldCount(1);
 
diff --git a/src/node_crypto.h b/src/node_crypto.h
index cc67061735..6605dfdf69 100644
--- a/src/node_crypto.h
+++ b/src/node_crypto.h
@@ -154,8 +154,8 @@ class SSLWrap {
     }
 
 #ifdef OPENSSL_NPN_NEGOTIATED
-    npn_protos_.Dispose();
-    selected_npn_proto_.Dispose();
+    npn_protos_.Reset();
+    selected_npn_proto_.Reset();
 #endif
   }
 
@@ -240,9 +240,9 @@ class Connection : public SSLWrap<Connection>, public AsyncWrap {
  public:
   ~Connection() {
 #ifdef SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
-    sniObject_.Dispose();
-    sniContext_.Dispose();
-    servername_.Dispose();
+    sniObject_.Reset();
+    sniContext_.Reset();
+    servername_.Reset();
 #endif
   }
 
diff --git a/src/node_dtrace.cc b/src/node_dtrace.cc
index a4b5645d15..f0575b3890 100644
--- a/src/node_dtrace.cc
+++ b/src/node_dtrace.cc
@@ -324,7 +324,8 @@ void InitDTrace(Environment* env, Handle<Object> target) {
 
   for (unsigned int i = 0; i < ARRAY_SIZE(tab); i++) {
     Local<String> key = OneByteString(env->isolate(), tab[i].name);
-    Local<Value> val = FunctionTemplate::New(tab[i].func)->GetFunction();
+    Local<Value> val = FunctionTemplate::New(env->isolate(), tab[i].func)
+        ->GetFunction();
     target->Set(key, val);
   }
 
diff --git a/src/node_file.cc b/src/node_file.cc
index c860950e34..1d454abb3b 100644
--- a/src/node_file.cc
+++ b/src/node_file.cc
@@ -46,6 +46,7 @@ namespace node {
 
 using v8::Array;
 using v8::Context;
+using v8::EscapableHandleScope;
 using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
@@ -70,7 +71,7 @@ class FSReqWrap: public ReqWrap<uv_fs_t> {
   void* operator new(size_t size, char* storage) { return storage; }
 
   FSReqWrap(Environment* env, const char* syscall, char* data = NULL)
-    : ReqWrap<uv_fs_t>(env, Object::New()),
+    : ReqWrap<uv_fs_t>(env, Object::New(env->isolate())),
       syscall_(syscall),
       data_(data),
       dest_len_(0) {
@@ -179,11 +180,11 @@ static void After(uv_fs_t *req) {
         break;
 
       case UV_FS_OPEN:
-        argv[1] = Integer::New(req->result, env->isolate());
+        argv[1] = Integer::New(env->isolate(), req->result);
         break;
 
       case UV_FS_WRITE:
-        argv[1] = Integer::New(req->result, env->isolate());
+        argv[1] = Integer::New(env->isolate(), req->result);
         break;
 
       case UV_FS_STAT:
@@ -200,7 +201,7 @@ static void After(uv_fs_t *req) {
 
       case UV_FS_READ:
         // Buffer interface
-        argv[1] = Integer::New(req->result, env->isolate());
+        argv[1] = Integer::New(env->isolate(), req->result);
         break;
 
       case UV_FS_READDIR:
@@ -208,7 +209,7 @@ static void After(uv_fs_t *req) {
           char *namebuf = static_cast<char*>(req->ptr);
           int nnames = req->result;
 
-          Local<Array> names = Array::New(nnames);
+          Local<Array> names = Array::New(env->isolate(), nnames);
 
           for (int i = 0; i < nnames; i++) {
             Local<String> name = String::NewFromUtf8(env->isolate(), namebuf);
@@ -326,11 +327,11 @@ Local<Object> BuildStatsObject(Environment* env, const uv_stat_t* s) {
   // If you hit this assertion, you forgot to enter the v8::Context first.
   assert(env->context() == env->isolate()->GetCurrentContext());
 
-  HandleScope handle_scope(env->isolate());
+  EscapableHandleScope handle_scope(env->isolate());
 
   Local<Object> stats = env->stats_constructor_function()->NewInstance();
   if (stats.IsEmpty()) {
-    return Local<Object>();
+    return handle_scope.Escape(Local<Object>());
   }
 
   // The code below is very nasty-looking but it prevents a segmentation fault
@@ -346,9 +347,9 @@ Local<Object> BuildStatsObject(Environment* env, const uv_stat_t* s) {
   // and make sure that we bail out when V8 returns an empty handle.
 #define X(name)                                                               \
   {                                                                           \
-    Local<Value> val = Integer::New(s->st_##name, env->isolate());            \
+    Local<Value> val = Integer::New(env->isolate(), s->st_##name);            \
     if (val.IsEmpty())                                                        \
-      return Local<Object>();                                                 \
+      return handle_scope.Escape(Local<Object>());                            \
     stats->Set(env->name ## _string(), val);                                  \
   }
   X(dev)
@@ -364,9 +365,10 @@ Local<Object> BuildStatsObject(Environment* env, const uv_stat_t* s) {
 
 #define X(name)                                                               \
   {                                                                           \
-    Local<Value> val = Number::New(static_cast<double>(s->st_##name));        \
+    Local<Value> val = Number::New(env->isolate(),                            \
+                                   static_cast<double>(s->st_##name));        \
     if (val.IsEmpty())                                                        \
-      return Local<Object>();                                                 \
+      return handle_scope.Escape(Local<Object>());                            \
     stats->Set(env->name ## _string(), val);                                  \
   }
   X(ino)
@@ -380,9 +382,9 @@ Local<Object> BuildStatsObject(Environment* env, const uv_stat_t* s) {
   {                                                                           \
     double msecs = static_cast<double>(s->st_##rec.tv_sec) * 1000;            \
     msecs += static_cast<double>(s->st_##rec.tv_nsec / 1000000);              \
-    Local<Value> val = v8::Date::New(msecs);                                  \
+    Local<Value> val = v8::Date::New(env->isolate(), msecs);                  \
     if (val.IsEmpty())                                                        \
-      return Local<Object>();                                                 \
+      return handle_scope.Escape(Local<Object>());                            \
     stats->Set(env->name ## _string(), val);                                  \
   }
   X(atime, atim)
@@ -391,7 +393,7 @@ Local<Object> BuildStatsObject(Environment* env, const uv_stat_t* s) {
   X(birthtime, birthtim)
 #undef X
 
-  return handle_scope.Close(stats);
+  return handle_scope.Escape(stats);
 }
 
 static void Stat(const FunctionCallbackInfo<Value>& args) {
@@ -685,7 +687,7 @@ static void ReadDir(const FunctionCallbackInfo<Value>& args) {
     assert(SYNC_REQ.result >= 0);
     char* namebuf = static_cast<char*>(SYNC_REQ.ptr);
     uint32_t nnames = SYNC_REQ.result;
-    Local<Array> names = Array::New(nnames);
+    Local<Array> names = Array::New(env->isolate(), nnames);
 
     for (uint32_t i = 0; i < nnames; ++i) {
       names->Set(i, String::NewFromUtf8(env->isolate(), namebuf));
@@ -1087,7 +1089,8 @@ void InitFs(Handle<Object> target,
   Environment* env = Environment::GetCurrent(context);
 
   // Initialize the stats object
-  Local<Function> constructor = FunctionTemplate::New()->GetFunction();
+  Local<Function> constructor =
+      FunctionTemplate::New(env->isolate())->GetFunction();
   target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "Stats"), constructor);
   env->set_stats_constructor_function(constructor);
 
diff --git a/src/node_http_parser.cc b/src/node_http_parser.cc
index 7424f4b8bc..5fe4448cd0 100644
--- a/src/node_http_parser.cc
+++ b/src/node_http_parser.cc
@@ -243,7 +243,7 @@ class Parser : public BaseObject {
     if (!cb->IsFunction())
       return 0;
 
-    Local<Object> message_info = Object::New();
+    Local<Object> message_info = Object::New(env()->isolate());
 
     if (have_flushed_) {
       // Slow case, flush remaining headers.
@@ -259,22 +259,23 @@ class Parser : public BaseObject {
     // METHOD
     if (parser_.type == HTTP_REQUEST) {
       message_info->Set(env()->method_string(),
-                        Uint32::NewFromUnsigned(parser_.method));
+                        Uint32::NewFromUnsigned(env()->isolate(),
+                                                parser_.method));
     }
 
     // STATUS
     if (parser_.type == HTTP_RESPONSE) {
       message_info->Set(env()->status_code_string(),
-                        Integer::New(parser_.status_code, env()->isolate()));
+                        Integer::New(env()->isolate(), parser_.status_code));
       message_info->Set(env()->status_message_string(),
                         status_message_.ToString(env()));
     }
 
     // VERSION
     message_info->Set(env()->version_major_string(),
-                      Integer::New(parser_.http_major, env()->isolate()));
+                      Integer::New(env()->isolate(), parser_.http_major));
     message_info->Set(env()->version_minor_string(),
-                      Integer::New(parser_.http_minor, env()->isolate()));
+                      Integer::New(env()->isolate(), parser_.http_minor));
 
     message_info->Set(env()->should_keep_alive_string(),
                       http_should_keep_alive(&parser_) ?
@@ -308,8 +309,8 @@ class Parser : public BaseObject {
 
     Local<Value> argv[3] = {
       current_buffer_,
-      Integer::NewFromUnsigned(at - current_buffer_data_, env()->isolate()),
-      Integer::NewFromUnsigned(length, env()->isolate())
+      Integer::NewFromUnsigned(env()->isolate(), at - current_buffer_data_),
+      Integer::NewFromUnsigned(env()->isolate(), length)
     };
 
     Local<Value> r = cb.As<Function>()->Call(obj, ARRAY_SIZE(argv), argv);
@@ -407,7 +408,7 @@ class Parser : public BaseObject {
     if (parser->got_exception_)
       return;
 
-    Local<Integer> nparsed_obj = Integer::New(nparsed, env->isolate());
+    Local<Integer> nparsed_obj = Integer::New(env->isolate(), nparsed);
     // If there was a parse error in one of the callbacks
     // TODO(bnoordhuis) What if there is an error on EOF?
     if (!parser->parser_.upgrade && nparsed != buffer_len) {
@@ -445,7 +446,7 @@ class Parser : public BaseObject {
 
       Local<Value> e = env->parse_error_string();
       Local<Object> obj = e->ToObject();
-      obj->Set(env->bytes_parsed_string(), Integer::New(0, env->isolate()));
+      obj->Set(env->bytes_parsed_string(), Integer::New(env->isolate(), 0));
       obj->Set(env->code_string(),
                OneByteString(env->isolate(), http_errno_name(err)));
 
@@ -485,7 +486,7 @@ class Parser : public BaseObject {
   Local<Array> CreateHeaders() {
     // num_values_ is either -1 or the entry # of the last header
     // so num_values_ == 0 means there's a single header
-    Local<Array> headers = Array::New(2 * num_values_);
+    Local<Array> headers = Array::New(env()->isolate(), 2 * num_values_);
 
     for (int i = 0; i < num_values_; ++i) {
       headers->Set(2 * i, fields_[i].ToString(env()));
@@ -565,24 +566,25 @@ void InitHttpParser(Handle<Object> target,
                     Handle<Context> context,
                     void* priv) {
   Environment* env = Environment::GetCurrent(context);
-  Local<FunctionTemplate> t = FunctionTemplate::New(Parser::New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(),
+                                                    Parser::New);
   t->InstanceTemplate()->SetInternalFieldCount(1);
   t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "HTTPParser"));
 
   t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "REQUEST"),
-         Integer::New(HTTP_REQUEST, env->isolate()));
+         Integer::New(env->isolate(), HTTP_REQUEST));
   t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "RESPONSE"),
-         Integer::New(HTTP_RESPONSE, env->isolate()));
+         Integer::New(env->isolate(), HTTP_RESPONSE));
   t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "kOnHeaders"),
-         Integer::NewFromUnsigned(kOnHeaders, env->isolate()));
+         Integer::NewFromUnsigned(env->isolate(), kOnHeaders));
   t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "kOnHeadersComplete"),
-         Integer::NewFromUnsigned(kOnHeadersComplete, env->isolate()));
+         Integer::NewFromUnsigned(env->isolate(), kOnHeadersComplete));
   t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "kOnBody"),
-         Integer::NewFromUnsigned(kOnBody, env->isolate()));
+         Integer::NewFromUnsigned(env->isolate(), kOnBody));
   t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "kOnMessageComplete"),
-         Integer::NewFromUnsigned(kOnMessageComplete, env->isolate()));
+         Integer::NewFromUnsigned(env->isolate(), kOnMessageComplete));
 
-  Local<Array> methods = Array::New();
+  Local<Array> methods = Array::New(env->isolate());
 #define V(num, name, string)                                                  \
     methods->Set(num, FIXED_ONE_BYTE_STRING(env->isolate(), #string));
   HTTP_METHOD_MAP(V)
diff --git a/src/node_internals.h b/src/node_internals.h
index 604f512f4a..9a6956f957 100644
--- a/src/node_internals.h
+++ b/src/node_internals.h
@@ -38,7 +38,7 @@ struct sockaddr;
 
 namespace node {
 
-// If persistent.IsWeak() == false, then do not call persistent.Dispose()
+// If persistent.IsWeak() == false, then do not call persistent.Reset()
 // while the returned Local<T> is still in scope, it will destroy the
 // reference to the object.
 template <class TypeName>
diff --git a/src/node_object_wrap.h b/src/node_object_wrap.h
index d387a2679c..445a9e66c3 100644
--- a/src/node_object_wrap.h
+++ b/src/node_object_wrap.h
@@ -40,7 +40,7 @@ class ObjectWrap {
       return;
     assert(persistent().IsNearDeath());
     persistent().ClearWeak();
-    persistent().Dispose();
+    persistent().Reset();
   }
 
 
diff --git a/src/node_os.cc b/src/node_os.cc
index 5de6049296..a7041aed7a 100644
--- a/src/node_os.cc
+++ b/src/node_os.cc
@@ -148,11 +148,11 @@ static void GetCPUInfo(const FunctionCallbackInfo<Value>& args) {
   if (err)
     return;
 
-  Local<Array> cpus = Array::New();
+  Local<Array> cpus = Array::New(env->isolate());
   for (i = 0; i < count; i++) {
     uv_cpu_info_t* ci = cpu_infos + i;
 
-    Local<Object> times_info = Object::New();
+    Local<Object> times_info = Object::New(env->isolate());
     times_info->Set(env->user_string(),
                     Number::New(env->isolate(), ci->cpu_times.user));
     times_info->Set(env->nice_string(),
@@ -164,7 +164,7 @@ static void GetCPUInfo(const FunctionCallbackInfo<Value>& args) {
     times_info->Set(env->irq_string(),
                     Number::New(env->isolate(), ci->cpu_times.irq));
 
-    Local<Object> cpu_info = Object::New();
+    Local<Object> cpu_info = Object::New(env->isolate());
     cpu_info->Set(env->model_string(),
                   OneByteString(env->isolate(), ci->model));
     cpu_info->Set(env->speed_string(),
@@ -214,10 +214,10 @@ static void GetLoadAvg(const FunctionCallbackInfo<Value>& args) {
   HandleScope scope(env->isolate());
   double loadavg[3];
   uv_loadavg(loadavg);
-  Local<Array> loads = Array::New(3);
-  loads->Set(0, Number::New(loadavg[0]));
-  loads->Set(1, Number::New(loadavg[1]));
-  loads->Set(2, Number::New(loadavg[2]));
+  Local<Array> loads = Array::New(env->isolate(), 3);
+  loads->Set(0, Number::New(env->isolate(), loadavg[0]));
+  loads->Set(1, Number::New(env->isolate(), loadavg[1]));
+  loads->Set(2, Number::New(env->isolate(), loadavg[2]));
   args.GetReturnValue().Set(loads);
 }
 
@@ -236,7 +236,7 @@ static void GetInterfaceAddresses(const FunctionCallbackInfo<Value>& args) {
 
   int err = uv_interface_addresses(&interfaces, &count);
 
-  ret = Object::New();
+  ret = Object::New(env->isolate());
 
   if (err == UV_ENOSYS) {
     args.GetReturnValue().Set(ret);
@@ -249,7 +249,7 @@ static void GetInterfaceAddresses(const FunctionCallbackInfo<Value>& args) {
     if (ret->Has(name)) {
       ifarr = Local<Array>::Cast(ret->Get(name));
     } else {
-      ifarr = Array::New();
+      ifarr = Array::New(env->isolate());
       ret->Set(name, ifarr);
     }
 
@@ -276,7 +276,7 @@ static void GetInterfaceAddresses(const FunctionCallbackInfo<Value>& args) {
       family = env->unknown_string();
     }
 
-    o = Object::New();
+    o = Object::New(env->isolate());
     o->Set(env->address_string(), OneByteString(env->isolate(), ip));
     o->Set(env->netmask_string(), OneByteString(env->isolate(), netmask));
     o->Set(env->family_string(), family);
@@ -284,7 +284,8 @@ static void GetInterfaceAddresses(const FunctionCallbackInfo<Value>& args) {
 
     if (interfaces[i].address.address4.sin_family == AF_INET6) {
       uint32_t scopeid = interfaces[i].address.address6.sin6_scope_id;
-      o->Set(env->scopeid_string(), Integer::NewFromUnsigned(scopeid));
+      o->Set(env->scopeid_string(),
+             Integer::NewFromUnsigned(env->isolate(), scopeid));
     }
 
     const bool internal = interfaces[i].is_internal;
diff --git a/src/node_stat_watcher.cc b/src/node_stat_watcher.cc
index 5d72d7c244..f88b422f4a 100644
--- a/src/node_stat_watcher.cc
+++ b/src/node_stat_watcher.cc
@@ -48,7 +48,8 @@ using v8::Value;
 void StatWatcher::Initialize(Environment* env, Handle<Object> target) {
   HandleScope scope(env->isolate());
 
-  Local<FunctionTemplate> t = FunctionTemplate::New(StatWatcher::New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(),
+                                                    StatWatcher::New);
   t->InstanceTemplate()->SetInternalFieldCount(1);
   t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "StatWatcher"));
 
@@ -92,7 +93,7 @@ void StatWatcher::Callback(uv_fs_poll_t* handle,
   Local<Value> argv[] = {
     BuildStatsObject(env, curr),
     BuildStatsObject(env, prev),
-    Integer::New(status, env->isolate())
+    Integer::New(env->isolate(), status)
   };
   wrap->MakeCallback(env->onchange_string(), ARRAY_SIZE(argv), argv);
 }
diff --git a/src/node_v8.cc b/src/node_v8.cc
index 25f73d6183..6652f6176a 100644
--- a/src/node_v8.cc
+++ b/src/node_v8.cc
@@ -117,7 +117,7 @@ void Environment::AfterGarbageCollectionCallback(const GCInfo* before,
                                                  const GCInfo* after) {
   HandleScope handle_scope(isolate());
   Context::Scope context_scope(context());
-  Local<Value> argv[] = { Object::New(), Object::New() };
+  Local<Value> argv[] = { Object::New(isolate()), Object::New(isolate()) };
   const GCInfo* infov[] = { before, after };
   for (unsigned i = 0; i < ARRAY_SIZE(argv); i += 1) {
     Local<Object> obj = argv[i].As<Object>();
@@ -132,7 +132,7 @@ void Environment::AfterGarbageCollectionCallback(const GCInfo* before,
       default:
         UNREACHABLE();
     }
-    obj->Set(flags_string(), Uint32::NewFromUnsigned(info->flags(), isolate()));
+    obj->Set(flags_string(), Uint32::NewFromUnsigned(isolate(), info->flags()));
     obj->Set(timestamp_string(), Number::New(isolate(), info->timestamp()));
     // TODO(trevnorris): Setting many object properties in C++ is a significant
     // performance hit. Redo this to pass the results to JS and create/set the
@@ -140,7 +140,7 @@ void Environment::AfterGarbageCollectionCallback(const GCInfo* before,
 #define V(name)                                                               \
     do {                                                                      \
       obj->Set(name ## _string(),                                             \
-               Uint32::NewFromUnsigned(info->stats()->name(), isolate()));    \
+               Uint32::NewFromUnsigned(isolate(), info->stats()->name()));    \
     } while (0)
     V(total_heap_size);
     V(total_heap_size_executable);
@@ -185,12 +185,12 @@ void GetHeapStatistics(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(isolate);
   HeapStatistics s;
   isolate->GetHeapStatistics(&s);
-  Local<Object> info = Object::New();
+  Local<Object> info = Object::New(isolate);
   // TODO(trevnorris): Setting many object properties in C++ is a significant
   // performance hit. Redo this to pass the results to JS and create/set the
   // properties there.
 #define V(name)                                                               \
-  info->Set(env->name ## _string(), Uint32::NewFromUnsigned(s.name(), isolate))
+  info->Set(env->name ## _string(), Uint32::NewFromUnsigned(isolate, s.name()))
   V(total_heap_size);
   V(total_heap_size_executable);
   V(total_physical_size);
diff --git a/src/node_zlib.cc b/src/node_zlib.cc
index db789e2132..81d98d17c9 100644
--- a/src/node_zlib.cc
+++ b/src/node_zlib.cc
@@ -225,14 +225,14 @@ class ZCtx : public AsyncWrap {
   static void AfterSync(ZCtx* ctx, const FunctionCallbackInfo<Value>& args) {
     Environment* env = Environment::GetCurrent(args.GetIsolate());
     HandleScope scope(env->isolate());
-    Local<Integer> avail_out = Integer::New(ctx->strm_.avail_out,
-                                            env->isolate());
-    Local<Integer> avail_in = Integer::New(ctx->strm_.avail_in,
-                                           env->isolate());
+    Local<Integer> avail_out = Integer::New(env->isolate(),
+                                            ctx->strm_.avail_out);
+    Local<Integer> avail_in = Integer::New(env->isolate(),
+                                           ctx->strm_.avail_in);
 
     ctx->write_in_progress_ = false;
 
-    Local<Array> result = Array::New(2);
+    Local<Array> result = Array::New(env->isolate(), 2);
     result->Set(0, avail_in);
     result->Set(1, avail_out);
     args.GetReturnValue().Set(result);
@@ -329,10 +329,10 @@ class ZCtx : public AsyncWrap {
     if (!CheckError(ctx))
       return;
 
-    Local<Integer> avail_out = Integer::New(ctx->strm_.avail_out,
-                                            env->isolate());
-    Local<Integer> avail_in = Integer::New(ctx->strm_.avail_in,
-                                           env->isolate());
+    Local<Integer> avail_out = Integer::New(env->isolate(),
+                                            ctx->strm_.avail_out);
+    Local<Integer> avail_in = Integer::New(env->isolate(),
+                                           ctx->strm_.avail_in);
 
     ctx->write_in_progress_ = false;
 
@@ -358,7 +358,7 @@ class ZCtx : public AsyncWrap {
     HandleScope scope(env->isolate());
     Local<Value> args[2] = {
       OneByteString(env->isolate(), message),
-      Number::New(ctx->err_)
+      Number::New(env->isolate(), ctx->err_)
     };
     ctx->MakeCallback(env->onerror_string(), ARRAY_SIZE(args), args);
 
@@ -613,7 +613,7 @@ void InitZlib(Handle<Object> target,
               Handle<Context> context,
               void* priv) {
   Environment* env = Environment::GetCurrent(context);
-  Local<FunctionTemplate> z = FunctionTemplate::New(ZCtx::New);
+  Local<FunctionTemplate> z = FunctionTemplate::New(env->isolate(), ZCtx::New);
 
   z->InstanceTemplate()->SetInternalFieldCount(1);
 
diff --git a/src/pipe_wrap.cc b/src/pipe_wrap.cc
index 3f19601789..e8bfadb0fa 100644
--- a/src/pipe_wrap.cc
+++ b/src/pipe_wrap.cc
@@ -36,6 +36,7 @@ namespace node {
 
 using v8::Boolean;
 using v8::Context;
+using v8::EscapableHandleScope;
 using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
@@ -59,13 +60,13 @@ uv_pipe_t* PipeWrap::UVHandle() {
 
 
 Local<Object> PipeWrap::Instantiate(Environment* env) {
-  HandleScope handle_scope(env->isolate());
+  EscapableHandleScope handle_scope(env->isolate());
   assert(!env->pipe_constructor_template().IsEmpty());
   Local<Function> constructor = env->pipe_constructor_template()->GetFunction();
   assert(!constructor.IsEmpty());
   Local<Object> instance = constructor->NewInstance();
   assert(!instance.IsEmpty());
-  return handle_scope.Close(instance);
+  return handle_scope.Escape(instance);
 }
 
 
@@ -74,7 +75,7 @@ void PipeWrap::Initialize(Handle<Object> target,
                           Handle<Context> context) {
   Environment* env = Environment::GetCurrent(context);
 
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(), New);
   t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "Pipe"));
   t->InstanceTemplate()->SetInternalFieldCount(1);
 
@@ -147,7 +148,7 @@ void PipeWrap::Bind(const FunctionCallbackInfo<Value>& args) {
 
   PipeWrap* wrap = Unwrap<PipeWrap>(args.This());
 
-  String::AsciiValue name(args[0]);
+  String::Utf8Value name(args[0]);
   int err = uv_pipe_bind(&wrap->handle_, *name);
   args.GetReturnValue().Set(err);
 }
@@ -195,8 +196,8 @@ void PipeWrap::OnConnection(uv_stream_t* handle, int status) {
   assert(pipe_wrap->persistent().IsEmpty() == false);
 
   Local<Value> argv[] = {
-    Integer::New(status, env->isolate()),
-    Undefined()
+    Integer::New(env->isolate(), status),
+    Undefined(env->isolate())
   };
 
   if (status != 0) {
@@ -244,11 +245,11 @@ void PipeWrap::AfterConnect(uv_connect_t* req, int status) {
 
   Local<Object> req_wrap_obj = req_wrap->object();
   Local<Value> argv[5] = {
-    Integer::New(status, env->isolate()),
+    Integer::New(env->isolate(), status),
     wrap->object(),
     req_wrap_obj,
-    Boolean::New(readable),
-    Boolean::New(writable)
+    Boolean::New(env->isolate(), readable),
+    Boolean::New(env->isolate(), writable)
   };
 
   req_wrap->MakeCallback(env->oncomplete_string(), ARRAY_SIZE(argv), argv);
@@ -268,7 +269,7 @@ void PipeWrap::Open(const FunctionCallbackInfo<Value>& args) {
   int err = uv_pipe_open(&wrap->handle_, fd);
 
   if (err != 0)
-    ThrowException(UVException(err, "uv_pipe_open"));
+    env->isolate()->ThrowException(UVException(err, "uv_pipe_open"));
 }
 
 
@@ -282,7 +283,7 @@ void PipeWrap::Connect(const FunctionCallbackInfo<Value>& args) {
   assert(args[1]->IsString());
 
   Local<Object> req_wrap_obj = args[0].As<Object>();
-  String::AsciiValue name(args[1]);
+  String::Utf8Value name(args[1]);
 
   ConnectWrap* req_wrap = new ConnectWrap(env,
                                           req_wrap_obj,
diff --git a/src/process_wrap.cc b/src/process_wrap.cc
index 31d0432e41..b1a34f6692 100644
--- a/src/process_wrap.cc
+++ b/src/process_wrap.cc
@@ -51,7 +51,8 @@ class ProcessWrap : public HandleWrap {
                          Handle<Value> unused,
                          Handle<Context> context) {
     Environment* env = Environment::GetCurrent(context);
-    Local<FunctionTemplate> constructor = FunctionTemplate::New(New);
+    Local<FunctionTemplate> constructor = FunctionTemplate::New(env->isolate(),
+                                                                New);
     constructor->InstanceTemplate()->SetInternalFieldCount(1);
     constructor->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "Process"));
 
@@ -234,7 +235,7 @@ class ProcessWrap : public HandleWrap {
     if (err == 0) {
       assert(wrap->process_.data == wrap);
       wrap->object()->Set(env->pid_string(),
-                          Integer::New(wrap->process_.pid, env->isolate()));
+                          Integer::New(env->isolate(), wrap->process_.pid));
     }
 
     if (options.args) {
diff --git a/src/req_wrap.h b/src/req_wrap.h
index 304b1a49a9..56d63eb711 100644
--- a/src/req_wrap.h
+++ b/src/req_wrap.h
@@ -53,7 +53,7 @@ class ReqWrap : public AsyncWrap {
     // Assert that someone has called Dispatched()
     assert(req_.data == this);
     assert(!persistent().IsEmpty());
-    persistent().Dispose();
+    persistent().Reset();
   }
 
   // Call this after the req has been dispatched.
diff --git a/src/signal_wrap.cc b/src/signal_wrap.cc
index 0e61ba63ea..4f69fc4bee 100644
--- a/src/signal_wrap.cc
+++ b/src/signal_wrap.cc
@@ -47,7 +47,8 @@ class SignalWrap : public HandleWrap {
                          Handle<Value> unused,
                          Handle<Context> context) {
     Environment* env = Environment::GetCurrent(context);
-    Local<FunctionTemplate> constructor = FunctionTemplate::New(New);
+    Local<FunctionTemplate> constructor = FunctionTemplate::New(env->isolate(),
+                                                                New);
     constructor->InstanceTemplate()->SetInternalFieldCount(1);
     constructor->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "Signal"));
 
@@ -109,7 +110,7 @@ class SignalWrap : public HandleWrap {
     HandleScope handle_scope(env->isolate());
     Context::Scope context_scope(env->context());
 
-    Local<Value> arg = Integer::New(signum, env->isolate());
+    Local<Value> arg = Integer::New(env->isolate(), signum);
     wrap->MakeCallback(env->onsignal_string(), 1, &arg);
   }
 
diff --git a/src/smalloc.cc b/src/smalloc.cc
index 347d7035b9..6a812be51e 100644
--- a/src/smalloc.cc
+++ b/src/smalloc.cc
@@ -50,6 +50,7 @@ using v8::Persistent;
 using v8::RetainedObjectInfo;
 using v8::Uint32;
 using v8::Value;
+using v8::WeakCallbackData;
 using v8::kExternalUnsignedByteArray;
 
 
@@ -59,12 +60,11 @@ struct CallbackInfo {
   Persistent<Object> p_obj;
 };
 
-void TargetCallback(Isolate* isolate,
-                    Persistent<Object>* target,
-                    char* arg);
+void TargetCallback(const WeakCallbackData<Object, char>& data);
 void TargetFreeCallback(Isolate* isolate,
                         Persistent<Object>* target,
-                        CallbackInfo* arg);
+                        CallbackInfo* cb_info);
+void TargetFreeCallback(const WeakCallbackData<Object, CallbackInfo>& data);
 
 
 // return size of external array type, or 0 if unrecognized
@@ -270,7 +270,7 @@ void Alloc(Environment* env,
   assert(!obj->HasIndexedPropertiesInExternalArrayData());
   Persistent<Object> p_obj(env->isolate(), obj);
   env->isolate()->AdjustAmountOfExternalAllocatedMemory(length);
-  p_obj.MakeWeak(data, TargetCallback);
+  p_obj.SetWeak(data, TargetCallback);
   p_obj.MarkIndependent();
   p_obj.SetWrapperClassId(ALLOC_ID);
   size_t size = length / ExternalArraySize(type);
@@ -278,11 +278,11 @@ void Alloc(Environment* env,
 }
 
 
-void TargetCallback(Isolate* isolate,
-                    Persistent<Object>* target,
-                    char* data) {
-  HandleScope handle_scope(isolate);
-  Local<Object> obj = PersistentToLocal(isolate, *target);
+void TargetCallback(const WeakCallbackData<Object, char>& data) {
+  HandleScope handle_scope(data.GetIsolate());
+  char* info = data.GetParameter();
+
+  Local<Object> obj = data.GetValue();
   size_t len = obj->GetIndexedPropertiesExternalArrayDataLength();
   enum ExternalArrayType array_type =
     obj->GetIndexedPropertiesExternalArrayDataType();
@@ -290,11 +290,13 @@ void TargetCallback(Isolate* isolate,
   assert(array_size > 0);
   assert(array_size * len >= len);
   len *= array_size;
-  if (data != NULL && len > 0) {
-    isolate->AdjustAmountOfExternalAllocatedMemory(-len);
-    free(data);
+  if (info != NULL && len > 0) {
+    data.GetIsolate()->AdjustAmountOfExternalAllocatedMemory(-len);
+    free(info);
   }
-  (*target).Dispose();
+
+  // XXX: Persistent is no longer passed here
+  // persistent.Reset();
 }
 
 
@@ -377,11 +379,12 @@ void Alloc(Environment* env,
   cb_info->cb = fn;
   cb_info->hint = hint;
   cb_info->p_obj.Reset(env->isolate(), obj);
-  obj->SetHiddenValue(env->smalloc_p_string(), External::New(cb_info));
+  obj->SetHiddenValue(env->smalloc_p_string(),
+                      External::New(env->isolate(), cb_info));
 
   env->isolate()->AdjustAmountOfExternalAllocatedMemory(length +
                                                         sizeof(*cb_info));
-  cb_info->p_obj.MakeWeak(cb_info, TargetFreeCallback);
+  cb_info->p_obj.SetWeak(cb_info, TargetFreeCallback);
   cb_info->p_obj.MarkIndependent();
   cb_info->p_obj.SetWrapperClassId(ALLOC_ID);
   size_t size = length / ExternalArraySize(type);
@@ -405,12 +408,18 @@ void TargetFreeCallback(Isolate* isolate,
     len *= array_size;
   }
   isolate->AdjustAmountOfExternalAllocatedMemory(-(len + sizeof(*cb_info)));
-  cb_info->p_obj.Dispose();
+  cb_info->p_obj.Reset();
   cb_info->cb(data, cb_info->hint);
   delete cb_info;
 }
 
 
+void TargetFreeCallback(const WeakCallbackData<Object, CallbackInfo>& data) {
+  CallbackInfo* cb_info = data.GetParameter();
+  TargetFreeCallback(data.GetIsolate(), &cb_info->p_obj, cb_info);
+}
+
+
 void HasExternalData(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args.GetIsolate());
   args.GetReturnValue().Set(args[0]->IsObject() &&
@@ -495,7 +504,7 @@ void Initialize(Handle<Object> exports,
   NODE_SET_METHOD(exports, "hasExternalData", HasExternalData);
 
   exports->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "kMaxLength"),
-               Uint32::NewFromUnsigned(kMaxLength, env->isolate()));
+               Uint32::NewFromUnsigned(env->isolate(), kMaxLength));
 
   HeapProfiler* heap_profiler = env->isolate()->GetHeapProfiler();
   heap_profiler->SetWrapperClassInfoProvider(ALLOC_ID, WrapperInfo);
diff --git a/src/spawn_sync.cc b/src/spawn_sync.cc
index 9b67a602c3..73d821ae75 100644
--- a/src/spawn_sync.cc
+++ b/src/spawn_sync.cc
@@ -32,6 +32,7 @@ namespace node {
 
 using v8::Array;
 using v8::Context;
+using v8::EscapableHandleScope;
 using v8::FunctionCallbackInfo;
 using v8::Handle;
 using v8::HandleScope;
@@ -430,7 +431,7 @@ Environment* SyncProcessRunner::env() const {
 
 
 Local<Object> SyncProcessRunner::Run(Local<Value> options) {
-  HandleScope scope(env()->isolate());
+  EscapableHandleScope scope(env()->isolate());
 
   assert(lifecycle_ == kUninitialized);
 
@@ -439,7 +440,7 @@ Local<Object> SyncProcessRunner::Run(Local<Value> options) {
 
   Local<Object> result = BuildResultObject();
 
-  return scope.Close(result);
+  return scope.Escape(result);
 }
 
 
@@ -644,12 +645,14 @@ void SyncProcessRunner::SetPipeError(int pipe_error) {
 
 
 Local<Object> SyncProcessRunner::BuildResultObject() {
-  HandleScope scope(env()->isolate());
+  EscapableHandleScope scope(env()->isolate());
 
-  Local<Object> js_result = Object::New();
+  Local<Object> js_result = Object::New(env()->isolate());
 
-  if (GetError() != 0)
-    js_result->Set(env()->error_string(), Integer::New(GetError()));
+  if (GetError() != 0) {
+    js_result->Set(env()->error_string(),
+                   Integer::New(env()->isolate(), GetError()));
+  }
 
   if (exit_status_ >= 0)
     js_result->Set(env()->status_string(),
@@ -662,7 +665,7 @@ Local<Object> SyncProcessRunner::BuildResultObject() {
     js_result->Set(env()->signal_string(),
         String::NewFromUtf8(env()->isolate(), signo_string(term_signal_)));
   else
-    js_result->Set(env()->signal_string(), Null());
+    js_result->Set(env()->signal_string(), Null(env()->isolate()));
 
   if (exit_status_ >= 0)
     js_result->Set(env()->output_string(), BuildOutputArray());
@@ -672,7 +675,7 @@ Local<Object> SyncProcessRunner::BuildResultObject() {
   js_result->Set(env()->pid_string(),
                  Number::New(env()->isolate(), uv_process_.pid));
 
-  return scope.Close(js_result);
+  return scope.Escape(js_result);
 }
 
 
@@ -680,18 +683,18 @@ Local<Array> SyncProcessRunner::BuildOutputArray() {
   assert(lifecycle_ >= kInitialized);
   assert(stdio_pipes_ != NULL);
 
-  HandleScope scope(env()->isolate());
-  Local<Array> js_output = Array::New(stdio_count_);
+  EscapableHandleScope scope(env()->isolate());
+  Local<Array> js_output = Array::New(env()->isolate(), stdio_count_);
 
   for (uint32_t i = 0; i < stdio_count_; i++) {
     SyncProcessStdioPipe* h = stdio_pipes_[i];
     if (h != NULL && h->writable())
       js_output->Set(i, h->GetOutputAsBuffer());
     else
-      js_output->Set(i, Null());
+      js_output->Set(i, Null(env()->isolate()));
   }
 
-  return scope.Close(js_output);
+  return scope.Escape(js_output);
 }
 
 
diff --git a/src/stream_wrap.cc b/src/stream_wrap.cc
index 349b098b68..2ead49a4fb 100644
--- a/src/stream_wrap.cc
+++ b/src/stream_wrap.cc
@@ -41,6 +41,7 @@ namespace node {
 
 using v8::Array;
 using v8::Context;
+using v8::EscapableHandleScope;
 using v8::FunctionCallbackInfo;
 using v8::Handle;
 using v8::HandleScope;
@@ -83,7 +84,7 @@ void StreamWrap::GetFD(Local<String>, const PropertyCallbackInfo<Value>& args) {
 void StreamWrap::UpdateWriteQueueSize() {
   HandleScope scope(env()->isolate());
   Local<Integer> write_queue_size =
-      Integer::NewFromUnsigned(stream()->write_queue_size, env()->isolate());
+      Integer::NewFromUnsigned(env()->isolate(), stream()->write_queue_size);
   object()->Set(env()->write_queue_size_string(), write_queue_size);
 }
 
@@ -121,7 +122,7 @@ void StreamWrap::OnAlloc(uv_handle_t* handle,
 
 template <class WrapType, class UVType>
 static Local<Object> AcceptHandle(Environment* env, uv_stream_t* pipe) {
-  HandleScope scope(env->isolate());
+  EscapableHandleScope scope(env->isolate());
   Local<Object> wrap_obj;
   UVType* handle;
 
@@ -135,7 +136,7 @@ static Local<Object> AcceptHandle(Environment* env, uv_stream_t* pipe) {
   if (uv_accept(pipe, reinterpret_cast<uv_stream_t*>(handle)))
     abort();
 
-  return scope.Close(wrap_obj);
+  return scope.Escape(wrap_obj);
 }
 
 
@@ -238,7 +239,7 @@ void StreamWrap::WriteBuffer(const FunctionCallbackInfo<Value>& args) {
   if (msg != NULL)
     req_wrap_obj->Set(env->error_string(), OneByteString(env->isolate(), msg));
   req_wrap_obj->Set(env->bytes_string(),
-                    Integer::NewFromUnsigned(length, env->isolate()));
+                    Integer::NewFromUnsigned(env->isolate(), length));
   args.GetReturnValue().Set(err);
 }
 
@@ -368,7 +369,7 @@ void StreamWrap::WriteStringImpl(const FunctionCallbackInfo<Value>& args) {
   if (msg != NULL)
     req_wrap_obj->Set(env->error_string(), OneByteString(env->isolate(), msg));
   req_wrap_obj->Set(env->bytes_string(),
-                    Integer::NewFromUnsigned(data_size, env->isolate()));
+                    Integer::NewFromUnsigned(env->isolate(), data_size));
   args.GetReturnValue().Set(err);
 }
 
@@ -526,10 +527,10 @@ void StreamWrap::AfterWrite(uv_write_t* req, int status) {
   wrap->callbacks()->AfterWrite(req_wrap);
 
   Local<Value> argv[] = {
-    Integer::New(status, env->isolate()),
+    Integer::New(env->isolate(), status),
     wrap->object(),
     req_wrap_obj,
-    Undefined()
+    Undefined(env->isolate())
   };
 
   const char* msg = wrap->callbacks()->Error();
@@ -577,7 +578,7 @@ void StreamWrap::AfterShutdown(uv_shutdown_t* req, int status) {
 
   Local<Object> req_wrap_obj = req_wrap->object();
   Local<Value> argv[3] = {
-    Integer::New(status, env->isolate()),
+    Integer::New(env->isolate(), status),
     wrap->object(),
     req_wrap_obj
   };
@@ -690,9 +691,9 @@ void StreamWrapCallbacks::DoRead(uv_stream_t* handle,
   Context::Scope context_scope(env->context());
 
   Local<Value> argv[] = {
-    Integer::New(nread, env->isolate()),
-    Undefined(),
-    Undefined()
+    Integer::New(env->isolate(), nread),
+    Undefined(env->isolate()),
+    Undefined(env->isolate())
   };
 
   if (nread < 0)  {
diff --git a/src/string_bytes.cc b/src/string_bytes.cc
index cb8a537c71..a00abbf3bf 100644
--- a/src/string_bytes.cc
+++ b/src/string_bytes.cc
@@ -36,6 +36,7 @@
 
 namespace node {
 
+using v8::EscapableHandleScope;
 using v8::Handle;
 using v8::HandleScope;
 using v8::Isolate;
@@ -66,35 +67,35 @@ class ExternString: public ResourceType {
     static Local<String> NewFromCopy(Isolate* isolate,
                                      const TypeName* data,
                                      size_t length) {
-      HandleScope scope(isolate);
+      EscapableHandleScope scope(isolate);
 
       if (length == 0)
-        return scope.Close(String::Empty(isolate));
+        return scope.Escape(String::Empty(isolate));
 
       TypeName* new_data = new TypeName[length];
       memcpy(new_data, data, length * sizeof(*new_data));
 
-      return scope.Close(ExternString<ResourceType, TypeName>::New(isolate,
-                                                                   new_data,
-                                                                   length));
+      return scope.Escape(ExternString<ResourceType, TypeName>::New(isolate,
+                                                                    new_data,
+                                                                    length));
     }
 
     // uses "data" for external resource, and will be free'd on gc
     static Local<String> New(Isolate* isolate,
                              const TypeName* data,
                              size_t length) {
-      HandleScope scope(isolate);
+      EscapableHandleScope scope(isolate);
 
       if (length == 0)
-        return scope.Close(String::Empty(isolate));
+        return scope.Escape(String::Empty(isolate));
 
       ExternString* h_str = new ExternString<ResourceType, TypeName>(isolate,
                                                                      data,
                                                                      length);
-      Local<String> str = String::NewExternal(h_str);
+      Local<String> str = String::NewExternal(isolate, h_str);
       isolate->AdjustAmountOfExternalAllocatedMemory(length);
 
-      return scope.Close(str);
+      return scope.Escape(str);
     }
 
     inline Isolate* isolate() const { return isolate_; }
@@ -676,16 +677,16 @@ Local<Value> StringBytes::Encode(Isolate* isolate,
                                  const char* buf,
                                  size_t buflen,
                                  enum encoding encoding) {
-  HandleScope scope(isolate);
+  EscapableHandleScope scope(isolate);
 
   assert(buflen <= Buffer::kMaxLength);
   if (!buflen && encoding != BUFFER)
-    return scope.Close(String::Empty(isolate));
+    return scope.Escape(String::Empty(isolate));
 
   Local<String> val;
   switch (encoding) {
     case BUFFER:
-      return scope.Close(Buffer::New(buf, buflen));
+      return scope.Escape(Buffer::New(buf, buflen));
 
     case ASCII:
       if (contains_non_ascii(buf, buflen)) {
@@ -767,7 +768,7 @@ Local<Value> StringBytes::Encode(Isolate* isolate,
       break;
   }
 
-  return scope.Close(val);
+  return scope.Escape(val);
 }
 
 }  // namespace node
diff --git a/src/tcp_wrap.cc b/src/tcp_wrap.cc
index 66935e6b60..2ffe9cb465 100644
--- a/src/tcp_wrap.cc
+++ b/src/tcp_wrap.cc
@@ -37,6 +37,7 @@
 namespace node {
 
 using v8::Context;
+using v8::EscapableHandleScope;
 using v8::Function;
 using v8::FunctionCallbackInfo;
 using v8::FunctionTemplate;
@@ -54,13 +55,13 @@ typedef class ReqWrap<uv_connect_t> ConnectWrap;
 
 
 Local<Object> TCPWrap::Instantiate(Environment* env) {
-  HandleScope handle_scope(env->isolate());
+  EscapableHandleScope handle_scope(env->isolate());
   assert(env->tcp_constructor_template().IsEmpty() == false);
   Local<Function> constructor = env->tcp_constructor_template()->GetFunction();
   assert(constructor.IsEmpty() == false);
   Local<Object> instance = constructor->NewInstance();
   assert(instance.IsEmpty() == false);
-  return handle_scope.Close(instance);
+  return handle_scope.Escape(instance);
 }
 
 
@@ -69,7 +70,7 @@ void TCPWrap::Initialize(Handle<Object> target,
                          Handle<Context> context) {
   Environment* env = Environment::GetCurrent(context);
 
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(), New);
   t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "TCP"));
   t->InstanceTemplate()->SetInternalFieldCount(1);
 
@@ -256,7 +257,7 @@ void TCPWrap::Bind(const FunctionCallbackInfo<Value>& args) {
 
   TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
 
-  String::AsciiValue ip_address(args[0]);
+  String::Utf8Value ip_address(args[0]);
   int port = args[1]->Int32Value();
 
   sockaddr_in addr;
@@ -277,7 +278,7 @@ void TCPWrap::Bind6(const FunctionCallbackInfo<Value>& args) {
 
   TCPWrap* wrap = Unwrap<TCPWrap>(args.This());
 
-  String::AsciiValue ip6_address(args[0]);
+  String::Utf8Value ip6_address(args[0]);
   int port = args[1]->Int32Value();
 
   sockaddr_in6 addr;
@@ -319,8 +320,8 @@ void TCPWrap::OnConnection(uv_stream_t* handle, int status) {
   assert(tcp_wrap->persistent().IsEmpty() == false);
 
   Local<Value> argv[2] = {
-    Integer::New(status, env->isolate()),
-    Undefined()
+    Integer::New(env->isolate(), status),
+    Undefined(env->isolate())
   };
 
   if (status == 0) {
@@ -356,7 +357,7 @@ void TCPWrap::AfterConnect(uv_connect_t* req, int status) {
 
   Local<Object> req_wrap_obj = req_wrap->object();
   Local<Value> argv[5] = {
-    Integer::New(status, env->isolate()),
+    Integer::New(env->isolate(), status),
     wrap->object(),
     req_wrap_obj,
     v8::True(env->isolate()),
@@ -380,7 +381,7 @@ void TCPWrap::Connect(const FunctionCallbackInfo<Value>& args) {
   assert(args[2]->Uint32Value());
 
   Local<Object> req_wrap_obj = args[0].As<Object>();
-  String::AsciiValue ip_address(args[1]);
+  String::Utf8Value ip_address(args[1]);
   int port = args[2]->Uint32Value();
 
   sockaddr_in addr;
@@ -414,7 +415,7 @@ void TCPWrap::Connect6(const FunctionCallbackInfo<Value>& args) {
   assert(args[2]->Uint32Value());
 
   Local<Object> req_wrap_obj = args[0].As<Object>();
-  String::AsciiValue ip_address(args[1]);
+  String::Utf8Value ip_address(args[1]);
   int port = args[2]->Int32Value();
 
   sockaddr_in6 addr;
@@ -441,14 +442,14 @@ void TCPWrap::Connect6(const FunctionCallbackInfo<Value>& args) {
 Local<Object> AddressToJS(Environment* env,
                           const sockaddr* addr,
                           Local<Object> info) {
-  HandleScope scope(env->isolate());
+  EscapableHandleScope scope(env->isolate());
   char ip[INET6_ADDRSTRLEN];
   const sockaddr_in *a4;
   const sockaddr_in6 *a6;
   int port;
 
   if (info.IsEmpty())
-    info = Object::New();
+    info = Object::New(env->isolate());
 
   switch (addr->sa_family) {
   case AF_INET6:
@@ -457,7 +458,7 @@ Local<Object> AddressToJS(Environment* env,
     port = ntohs(a6->sin6_port);
     info->Set(env->address_string(), OneByteString(env->isolate(), ip));
     info->Set(env->family_string(), env->ipv6_string());
-    info->Set(env->port_string(), Integer::New(port, env->isolate()));
+    info->Set(env->port_string(), Integer::New(env->isolate(), port));
     break;
 
   case AF_INET:
@@ -466,14 +467,14 @@ Local<Object> AddressToJS(Environment* env,
     port = ntohs(a4->sin_port);
     info->Set(env->address_string(), OneByteString(env->isolate(), ip));
     info->Set(env->family_string(), env->ipv4_string());
-    info->Set(env->port_string(), Integer::New(port, env->isolate()));
+    info->Set(env->port_string(), Integer::New(env->isolate(), port));
     break;
 
   default:
     info->Set(env->address_string(), String::Empty(env->isolate()));
   }
 
-  return scope.Close(info);
+  return scope.Escape(info);
 }
 
 
diff --git a/src/timer_wrap.cc b/src/timer_wrap.cc
index 13527433b1..a9d642461f 100644
--- a/src/timer_wrap.cc
+++ b/src/timer_wrap.cc
@@ -50,11 +50,12 @@ class TimerWrap : public HandleWrap {
                          Handle<Value> unused,
                          Handle<Context> context) {
     Environment* env = Environment::GetCurrent(context);
-    Local<FunctionTemplate> constructor = FunctionTemplate::New(New);
+    Local<FunctionTemplate> constructor = FunctionTemplate::New(env->isolate(),
+                                                                New);
     constructor->InstanceTemplate()->SetInternalFieldCount(1);
     constructor->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "Timer"));
     constructor->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "kOnTimeout"),
-                     Integer::New(kOnTimeout, env->isolate()));
+                     Integer::New(env->isolate(), kOnTimeout));
 
     NODE_SET_METHOD(constructor, "now", Now);
 
@@ -148,7 +149,7 @@ class TimerWrap : public HandleWrap {
     Environment* env = wrap->env();
     HandleScope handle_scope(env->isolate());
     Context::Scope context_scope(env->context());
-    Local<Value> argv[1] = { Integer::New(status, env->isolate()) };
+    Local<Value> argv[1] = { Integer::New(env->isolate(), status) };
     wrap->MakeCallback(kOnTimeout, ARRAY_SIZE(argv), argv);
   }
 
diff --git a/src/tls_wrap.cc b/src/tls_wrap.cc
index d3768e5185..fdc5a935af 100644
--- a/src/tls_wrap.cc
+++ b/src/tls_wrap.cc
@@ -39,6 +39,7 @@ using crypto::SSLWrap;
 using crypto::SecureContext;
 using v8::Boolean;
 using v8::Context;
+using v8::EscapableHandleScope;
 using v8::Exception;
 using v8::Function;
 using v8::FunctionCallbackInfo;
@@ -104,11 +105,11 @@ TLSCallbacks::~TLSCallbacks() {
   clear_in_ = NULL;
 
   sc_ = NULL;
-  sc_handle_.Dispose();
-  persistent().Dispose();
+  sc_handle_.Reset();
+  persistent().Reset();
 
 #ifdef SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
-  sni_context_.Dispose();
+  sni_context_.Reset();
 #endif  // SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
 
   // Move all writes to pending
@@ -408,7 +409,7 @@ const char* TLSCallbacks::PrintErrors() {
 
 
 Local<Value> TLSCallbacks::GetSSLError(int status, int* err, const char** msg) {
-  HandleScope scope(env()->isolate());
+  EscapableHandleScope scope(env()->isolate());
 
   *err = SSL_get_error(ssl_, status);
   switch (*err) {
@@ -417,7 +418,7 @@ Local<Value> TLSCallbacks::GetSSLError(int status, int* err, const char** msg) {
     case SSL_ERROR_WANT_WRITE:
       break;
     case SSL_ERROR_ZERO_RETURN:
-      return scope.Close(env()->zero_return_string());
+      return scope.Escape(env()->zero_return_string());
       break;
     default:
       {
@@ -434,7 +435,7 @@ Local<Value> TLSCallbacks::GetSSLError(int status, int* err, const char** msg) {
           *msg = buf;
         }
 
-        return scope.Close(exception);
+        return scope.Escape(exception);
       }
   }
   return Local<Value>();
@@ -457,7 +458,7 @@ void TLSCallbacks::ClearOut() {
     read = SSL_read(ssl_, out, sizeof(out));
     if (read > 0) {
       Local<Value> argv[] = {
-        Integer::New(read, env()->isolate()),
+        Integer::New(env()->isolate(), read),
         Buffer::New(env(), out, read)
       };
       wrap()->MakeCallback(env()->onread_string(), ARRAY_SIZE(argv), argv);
@@ -467,7 +468,7 @@ void TLSCallbacks::ClearOut() {
   int flags = SSL_get_shutdown(ssl_);
   if (!eof_ && flags & SSL_RECEIVED_SHUTDOWN) {
     eof_ = true;
-    Local<Value> arg = Integer::New(UV_EOF, env()->isolate());
+    Local<Value> arg = Integer::New(env()->isolate(), UV_EOF);
     wrap()->MakeCallback(env()->onread_string(), 1, &arg);
   }
 
@@ -634,7 +635,7 @@ void TLSCallbacks::DoRead(uv_stream_t* handle,
 
     HandleScope handle_scope(env()->isolate());
     Context::Scope context_scope(env()->context());
-    Local<Value> arg = Integer::New(nread, env()->isolate());
+    Local<Value> arg = Integer::New(env()->isolate(), nread);
     wrap()->MakeCallback(env()->onread_string(), 1, &arg);
     return;
   }
@@ -794,7 +795,7 @@ int TLSCallbacks::SelectSNIContextCallback(SSL* s, int* ad, void* arg) {
     return SSL_TLSEXT_ERR_NOACK;
   }
 
-  p->sni_context_.Dispose();
+  p->sni_context_.Reset();
   p->sni_context_.Reset(env->isolate(), ctx);
 
   SecureContext* sc = Unwrap<SecureContext>(ctx.As<Object>());
@@ -812,7 +813,7 @@ void TLSCallbacks::Initialize(Handle<Object> target,
 
   NODE_SET_METHOD(target, "wrap", TLSCallbacks::Wrap);
 
-  Local<FunctionTemplate> t = FunctionTemplate::New();
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate());
   t->InstanceTemplate()->SetInternalFieldCount(1);
   t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "TLSWrap"));
 
diff --git a/src/tty_wrap.cc b/src/tty_wrap.cc
index cd6e319fc0..a3957bea23 100644
--- a/src/tty_wrap.cc
+++ b/src/tty_wrap.cc
@@ -53,7 +53,7 @@ void TTYWrap::Initialize(Handle<Object> target,
                          Handle<Context> context) {
   Environment* env = Environment::GetCurrent(context);
 
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(), New);
   t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "TTY"));
   t->InstanceTemplate()->SetInternalFieldCount(1);
 
@@ -141,8 +141,8 @@ void TTYWrap::GetWindowSize(const FunctionCallbackInfo<Value>& args) {
 
   if (err == 0) {
     Local<v8::Array> a = args[0].As<Array>();
-    a->Set(0, Integer::New(width, env->isolate()));
-    a->Set(1, Integer::New(height, env->isolate()));
+    a->Set(0, Integer::New(env->isolate(), width));
+    a->Set(1, Integer::New(env->isolate(), height));
   }
 
   args.GetReturnValue().Set(err);
diff --git a/src/udp_wrap.cc b/src/udp_wrap.cc
index 36ce93d63b..01ec324eb6 100644
--- a/src/udp_wrap.cc
+++ b/src/udp_wrap.cc
@@ -91,7 +91,7 @@ void UDPWrap::Initialize(Handle<Object> target,
                          Handle<Context> context) {
   Environment* env = Environment::GetCurrent(context);
 
-  Local<FunctionTemplate> t = FunctionTemplate::New(New);
+  Local<FunctionTemplate> t = FunctionTemplate::New(env->isolate(), New);
   t->InstanceTemplate()->SetInternalFieldCount(1);
   t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "UDP"));
 
@@ -371,7 +371,7 @@ void UDPWrap::OnSend(uv_udp_send_t* req, int status) {
     Environment* env = req_wrap->env();
     HandleScope handle_scope(env->isolate());
     Context::Scope context_scope(env->context());
-    Local<Value> arg = Integer::New(status, env->isolate());
+    Local<Value> arg = Integer::New(env->isolate(), status);
     req_wrap->MakeCallback(env->oncomplete_string(), 1, &arg);
   }
   delete req_wrap;
@@ -410,7 +410,7 @@ void UDPWrap::OnRecv(uv_udp_t* handle,
 
   Local<Object> wrap_obj = wrap->object();
   Local<Value> argv[] = {
-    Integer::New(nread, env->isolate()),
+    Integer::New(env->isolate(), nread),
     wrap_obj,
     Undefined(env->isolate()),
     Undefined(env->isolate())
diff --git a/src/util.h b/src/util.h
index 9545475cc4..e9634ce3d1 100644
--- a/src/util.h
+++ b/src/util.h
@@ -60,7 +60,7 @@ namespace node {
 
 #define UNREACHABLE() abort()
 
-// If persistent.IsWeak() == false, then do not call persistent.Dispose()
+// If persistent.IsWeak() == false, then do not call persistent.Reset()
 // while the returned Local<T> is still in scope, it will destroy the
 // reference to the object.
 template <class TypeName>
@@ -71,7 +71,7 @@ inline v8::Local<TypeName> PersistentToLocal(
 // Unchecked conversion from a non-weak Persistent<T> to Local<TLocal<T>,
 // use with care!
 //
-// Do not call persistent.Dispose() while the returned Local<T> is still in
+// Do not call persistent.Reset() while the returned Local<T> is still in
 // scope, it will destroy the reference to the object.
 template <class TypeName>
 inline v8::Local<TypeName> StrongPersistentToLocal(
diff --git a/src/uv.cc b/src/uv.cc
index 1481f73e66..54bbf92f12 100644
--- a/src/uv.cc
+++ b/src/uv.cc
@@ -54,10 +54,10 @@ void Initialize(Handle<Object> target,
                 Handle<Context> context) {
   Environment* env = Environment::GetCurrent(context);
   target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "errname"),
-              FunctionTemplate::New(ErrName)->GetFunction());
+              FunctionTemplate::New(env->isolate(), ErrName)->GetFunction());
 #define V(name, _)                                                            \
   target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "UV_" # name),            \
-              Integer::New(UV_ ## name, env->isolate()));
+              Integer::New(env->isolate(), UV_ ## name));
   UV_ERRNO_MAP(V)
 #undef V
 }