Add code for wrapped callback into plugin

Author: HazAT

lib/raven-plugin.js

@@ -20,7 +20,16 @@
 'use strict';
 import {NativeModules} from 'react-native';
 
-var wrappedCallback = require('../src/utils').wrappedCallback;
+function wrappedCallback(callback) {
+  function dataCallback(data, original) {
+    var normalizedData = callback(data) || data;
+    if (original) {
+      return original(normalizedData) || normalizedData;
+    }
+    return normalizedData;
+  }
+  return dataCallback;
+}
 
 // Example React Native path format (iOS):
 // /var/containers/Bundle/Application/{DEVICE_ID}/HelloWorld.app/main.jsbundle