Class BufferWorker

test/cpp/bufferworkerpersistent.cpp:15–49

using namespace Nan;  // NOLINT(build/namespaces)

class BufferWorker : public AsyncWorker {
 public:
  BufferWorker(
          Callback *callback
        , int milliseconds
        , v8::Local<v8::Object> &bufferHandle
      )
    : AsyncWorker(callback), milliseconds(milliseconds) {
      SaveToPersistent("buffer", bufferHandle);
      SaveToPersistent(New("puffer").ToLocalChecked(), bufferHandle);
      SaveToPersistent(0u, bufferHandle);
    }

  ~BufferWorker() {}

  void Execute () {
    Sleep(milliseconds);
  }

  void HandleOKCallback () {
    HandleScope scope;

    v8::Local<v8::Value> handle = GetFromPersistent("buffer");
    callback->Call(1, &handle, async_resource);

    handle = GetFromPersistent(New("puffer").ToLocalChecked());
    callback->Call(1, &handle, async_resource);

    handle = GetFromPersistent(0u);
    callback->Call(1, &handle, async_resource);
  }

 private:
  int milliseconds;
};

NAN_METHOD(DoSleep) {
  v8::Local<v8::Object> bufferHandle = To<v8::Object>(info[1]).ToLocalChecked();