addonexample.cc

#include <nan.h>
#include <node.h>
#include <v8.h>

using namespace v8;

int counter = 0;

extern void doSomething();

NAN_METHOD( bind_OCProcess ) {
	NanScope();

	doSomething();

	counter++;

	if ( counter >= 5 ) {
		NanThrowTypeError( "Some error" );
		NanReturnValue( NanNull() );
	}

	NanReturnValue( NanNew<Object>() );
}

void Init(Handle<Object> exports, Handle<Object> module) {
	exports->Set( NanNew<String>( "OCProcess" ),
		NanNew<FunctionTemplate>( bind_OCProcess )->GetFunction() );
}

NODE_MODULE( addonexample, Init )

binding.gyp

{
	"targets": [
		{
			"target_name": "addonexample",
			"sources": [ "addonexample.cc" ],
			"include_dirs" : [
        		"<!(node -e \"require('nan')\")"
			]
		}
	],
}

index.js

var addon = require( "bindings" )( "addonexample" );

setInterval( function() {
	// console.log( addon.OCProcess() );
}, 1000 );

package.json

{
  "name": "addonexample",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "bindings": "^1.2.1",
    "nan": "^1.8.4"
  }
}