--- /dev/null
+/*********************************************************************
+ * NAN - Native Abstractions for Node.js
+ *
+ * Copyright (c) 2018 NAN contributors
+ *
+ * MIT License <https://github.com/nodejs/nan/blob/master/LICENSE.md>
+ ********************************************************************/
+
+#ifndef NAN_CONVERTERS_43_INL_H_
+#define NAN_CONVERTERS_43_INL_H_
+
+#define X(TYPE) \
+imp::ToFactory<v8::TYPE>::return_t \
+imp::ToFactory<v8::TYPE>::convert(v8::Local<v8::Value> val) { \
+ v8::Isolate *isolate = v8::Isolate::GetCurrent(); \
+ v8::EscapableHandleScope scope(isolate); \
+ return scope.Escape( \
+ val->To ## TYPE(isolate->GetCurrentContext()) \
+ .FromMaybe(v8::Local<v8::TYPE>())); \
+}
+
+X(Number)
+X(String)
+X(Object)
+X(Integer)
+X(Uint32)
+X(Int32)
+// V8 <= 7.0
+#if V8_MAJOR_VERSION < 7 || (V8_MAJOR_VERSION == 7 && V8_MINOR_VERSION == 0)
+X(Boolean)
+#else
+imp::ToFactory<v8::Boolean>::return_t \
+imp::ToFactory<v8::Boolean>::convert(v8::Local<v8::Value> val) { \
+ v8::Isolate *isolate = v8::Isolate::GetCurrent(); \
+ v8::EscapableHandleScope scope(isolate); \
+ return scope.Escape(val->ToBoolean(isolate)); \
+}
+#endif
+
+#undef X
+
+#define X(TYPE, NAME) \
+imp::ToFactory<TYPE>::return_t \
+imp::ToFactory<TYPE>::convert(v8::Local<v8::Value> val) { \
+ v8::Isolate *isolate = v8::Isolate::GetCurrent(); \
+ v8::HandleScope scope(isolate); \
+ return val->NAME ## Value(isolate->GetCurrentContext()); \
+}
+
+X(double, Number)
+X(int64_t, Integer)
+X(uint32_t, Uint32)
+X(int32_t, Int32)
+// V8 <= 7.0
+#if V8_MAJOR_VERSION < 7 || (V8_MAJOR_VERSION == 7 && V8_MINOR_VERSION == 0)
+X(bool, Boolean)
+#else
+imp::ToFactory<bool>::return_t \
+imp::ToFactory<bool>::convert(v8::Local<v8::Value> val) { \
+ v8::Isolate *isolate = v8::Isolate::GetCurrent(); \
+ v8::HandleScope scope(isolate); \
+ return Just<bool>(val->BooleanValue(isolate)); \
+}
+#endif
+
+#undef X
+
+#endif // NAN_CONVERTERS_43_INL_H_