// Copyright 2017 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/builtins/builtins-utils.h" | |
#include "src/builtins/builtins.h" | |
#include "src/objects-inl.h" | |
namespace v8 { | |
namespace internal { | |
BUILTIN(IsPromise) { | |
SealHandleScope scope(isolate); | |
Handle<Object> object = args.atOrUndefined(isolate, 1); | |
return isolate->heap()->ToBoolean(object->IsJSPromise()); | |
} | |
} // namespace internal | |
} // namespace v8 |