The general pattern is that returned MaybeHandles (from any function, not
just JSON::Stringify) are empty when an exception has been thrown by the
operation. You can use a v8::TryCatch to catch this exception and inspect
it, it'll include a helpful error message.
On Tue, Feb 9, 2021 at 1:21 PM 'Vinayaka Kamath' via v8-users <
v8-users@googlegroups.com> wrote:
> Hello All,
>
> A call to JSON::Stringify is returning empty handle. I ensured that the
> parameters are valid. What are the other possible reasons? I tried
> retrieving the "JSON" object from the context using context->Global(), that
> fails and returns empty handle.
>
> bool toJSON(v8::Isolate *isolate, const v8::Local<v8::Value> &object,
> std::string &json) {
>
> json.clear();
>
> if (object.IsEmpty()) { // Object is not empty
> return true;
> }
>
> v8::HandleScope handle_scope(isolate);
> auto context = isolate->GetCurrentContext();
> std::cout << "Context: " << context.IsEmpty() << "\n";
> std::cout << "converting to string \n";
> v8::Local<v8::Value> result;
> if (!v8::JSON::Stringify(context, object).ToLocal(&result)) //
> This call is failing
> return false;
> json = *v8::String::Utf8Value(isolate, result);
> std::cout << "done converting to string \n" << json;
> return true;
> }
>
> Any help would be very much appreciated, thanks!
>
> --
>
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