hello.cc

#include <node.h>

namespace demo {
  using v8::FunctionCallbackInfo;
  using v8::Isolate;
  using v8::Local;
  using v8::Object;
  using v8::String;
  using v8::Value;

  void Method(const FunctionCallbackInfo<Value>& args) {
    Isolate* isolate = args.GetIsolate();
    args.GetReturnValue().Set(String::NewFromUtf8(isolate, "world"));
  }

  void init(Local<Object> exports) {
    NODE_SET_METHOD(exports, "hello", Method);
  }

  NODE_MODULE(addon, init)
}