Remove un-necessary comment/iostream and updated docs to reflect on limitations with this impl

Author: JckXia

doc/error_handling.md

@@ -14,6 +14,10 @@ If C++ exceptions are enabled (for more info see: [Setup](setup.md)), then the
 `Napi::Error` class extends `std::exception` and enables integrated
 error-handling for C++ exceptions and JavaScript exceptions.
 
+Note, that due to limitations of the N-API, if one attempt to cast the error object thrown as a primitive, an
+wrapped object will be received instead. (With properties ```isWrapObject``` and ```errorVal``` containing the primitive value thrown)
+
+
 The following sections explain the approach for each case:
 
 - [Handling Errors With C++ Exceptions](#exceptions)

napi-inl.h

@@ -2628,13 +2628,12 @@ inline Object Error::Value() const {
   if (_ref == nullptr) {
     return Object(_env, nullptr);
   }
-  // Most likely will mess up thread execution
 
   napi_value refValue;
   napi_status status = napi_get_reference_value(_env, _ref, &refValue);
   NAPI_THROW_IF_FAILED(_env, status, Object());
 
-  // We are wrapping this object
+  // We are checking if the object is wrapped
   bool isWrappedObject = false;
   napi_has_property(
       _env, refValue, String::From(_env, "isWrapObject"), &isWrappedObject);
@@ -2650,17 +2649,6 @@ inline Object Error::Value() const {
 
   return Object(_env, refValue);
 }
-// template<typename T>
-// inline T Error::Value() const {
-//   // if (_ref == nullptr) {
-//   //   return T(_env, nullptr);
-//   // }
-
-//   // napi_value value;
-//   // napi_status status = napi_get_reference_value(_env, _ref, &value);
-//   // NAPI_THROW_IF_FAILED(_env, status, T());
-//   return nullptr;
-// }
 
 inline Error::Error(Error&& other) : ObjectReference(std::move(other)) {
 }

napi.h

@@ -4,7 +4,6 @@
 #include <node_api.h>
 #include <functional>
 #include <initializer_list>
-#include <iostream>
 #include <memory>
 #include <mutex>
 #include <string>