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Native Abstractions for Node.js: C++ header for Node 0.8 -> 18 compatibility
There is a newer version: 2.19.0
/*********************************************************************
 * NAN - Native Abstractions for Node.js
 *
 * Copyright (c) 2018 NAN contributors
 *
 * MIT License 
 ********************************************************************/

#ifndef NAN_PERSISTENT_12_INL_H_
#define NAN_PERSISTENT_12_INL_H_

template class Persistent :
    public v8::Persistent {
 public:
  inline Persistent() : v8::Persistent() {}

  template inline Persistent(v8::Local that) :
      v8::Persistent(v8::Isolate::GetCurrent(), that) {}

  template
  inline
  Persistent(const v8::Persistent &that) :  // NOLINT(runtime/explicit)
      v8::Persistent(v8::Isolate::GetCurrent(), that) {}

  inline void Reset() { v8::PersistentBase::Reset(); }

  template 
  inline void Reset(const v8::Local &other) {
    v8::PersistentBase::Reset(v8::Isolate::GetCurrent(), other);
  }

  template 
  inline void Reset(const v8::PersistentBase &other) {
    v8::PersistentBase::Reset(v8::Isolate::GetCurrent(), other);
  }

  template
  inline void SetWeak(
    P *parameter
    , typename WeakCallbackInfo::Callback callback
    , WeakCallbackType type);

 private:
  inline T *operator*() const { return *PersistentBase::persistent; }

  template
  inline void Copy(const Persistent &that) {
    TYPE_CHECK(T, S);

    this->Reset();

    if (!that.IsEmpty()) {
      this->Reset(that);
      M::Copy(that, this);
    }
  }
};

#if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION > 4 ||                      \
  (V8_MAJOR_VERSION == 4 && defined(V8_MINOR_VERSION) && V8_MINOR_VERSION >= 3))
template
class Global : public v8::Global {
 public:
  inline Global() : v8::Global() {}

  template inline Global(v8::Local that) :
    v8::Global(v8::Isolate::GetCurrent(), that) {}

  template
  inline
  Global(const v8::PersistentBase &that) :  // NOLINT(runtime/explicit)
      v8::Global(v8::Isolate::GetCurrent(), that) {}

  inline void Reset() { v8::PersistentBase::Reset(); }

  template 
  inline void Reset(const v8::Local &other) {
    v8::PersistentBase::Reset(v8::Isolate::GetCurrent(), other);
  }

  template 
  inline void Reset(const v8::PersistentBase &other) {
    v8::PersistentBase::Reset(v8::Isolate::GetCurrent(), other);
  }

  template
  inline void SetWeak(
    P *parameter
    , typename WeakCallbackInfo
::Callback callback
    , WeakCallbackType type) {
    reinterpret_cast*>(this)->SetWeak(
        parameter, callback, type);
  }
};
#else
template
class Global : public v8::UniquePersistent {
 public:
  inline Global() : v8::UniquePersistent() {}

  template inline Global(v8::Local that) :
    v8::UniquePersistent(v8::Isolate::GetCurrent(), that) {}

  template
  inline
  Global(const v8::PersistentBase &that) :  // NOLINT(runtime/explicit)
      v8::UniquePersistent(v8::Isolate::GetCurrent(), that) {}

  inline void Reset() { v8::PersistentBase::Reset(); }

  template 
  inline void Reset(const v8::Local &other) {
    v8::PersistentBase::Reset(v8::Isolate::GetCurrent(), other);
  }

  template 
  inline void Reset(const v8::PersistentBase &other) {
    v8::PersistentBase::Reset(v8::Isolate::GetCurrent(), other);
  }

  template
  inline void SetWeak(
    P *parameter
    , typename WeakCallbackInfo::Callback callback
    , WeakCallbackType type) {
    reinterpret_cast*>(this)->SetWeak(
        parameter, callback, type);
  }
};
#endif

#endif  // NAN_PERSISTENT_12_INL_H_