Function makeInstance

src/Util.h:6–8

inline v8::Local<v8::Object>  makeInstance(Nan::Persistent<v8::FunctionTemplate>& _template) {
  return Nan::NewInstance(Nan::GetFunction(Nan::New(_template)).ToLocalChecked()).ToLocalChecked();
}

template <class T> inline double extract_double(const v8::Local<T>& a) {
  return Nan::To<double>(a).FromJust();