// 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-promise.h" #include "src/builtins/builtins-utils-inl.h" #include "src/builtins/builtins.h" #include "src/heap/heap-inl.h" // For ToBoolean. TODO(jkummerow): Drop. #include "src/logging/counters.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