Function ToUtf8String

node/opencc.cc:14–16

using namespace opencc;

std::string ToUtf8String(const Napi::Value& val) {
  return val.As<Napi::String>().Utf8Value();
}

class OpenccBinding : public Napi::ObjectWrap<OpenccBinding> {
  class ConvertWorker : public Napi::AsyncWorker {