[V8] Add v8::Value::TypeOf to API

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 8c8f5df13714e2f73a71967c25a4651bf8830b61..2848f61403de84094b7bb56e5af10f9be11591be 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -3515,6 +3515,15 @@ bool Value::SameValue(Local<Value> that) const {
   return self->SameValue(*other);
 }
 
+MaybeLocal<String> Value::TypeOf(v8::Local<v8::Context> context,
+                                 Local<Value> value) {
+  PREPARE_FOR_EXECUTION(context, "TypeOf", String);
+  i::Handle<i::String> result =
+      i::Object::TypeOf(isolate, Utils::OpenHandle(*value));
+  has_pending_exception = result.is_null();
+  RETURN_ON_FAILED_EXECUTION(String);
+  RETURN_ESCAPED(Utils::ToLocal(result));
+}
 
 Maybe<bool> v8::Object::Set(v8::Local<v8::Context> context,
                             v8::Local<Value> key, v8::Local<Value> value) {