Value::IsObject should return true for proxies as well

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 2750 matching lines @@
   return Utils::OpenHandle(this)->IsJSDataView();
 }
 
 
 bool Value::IsSharedArrayBuffer() const {
   i::Handle<i::Object> obj = Utils::OpenHandle(this);
   return obj->IsJSArrayBuffer() && i::JSArrayBuffer::cast(*obj)->is_shared();
 }
 
 
-bool Value::IsObject() const {
-  return Utils::OpenHandle(this)->IsJSObject();
-}
+bool Value::IsObject() const { return Utils::OpenHandle(this)->IsJSReceiver(); }
 
 
 bool Value::IsNumber() const {
   return Utils::OpenHandle(this)->IsNumber();
 }
 
 
 bool Value::IsProxy() const { return Utils::OpenHandle(this)->IsJSProxy(); }
 
 
@@ skipping 5754 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8