fixed eventEmitter

lib/query-chainer.js

@@ -89,17 +89,22 @@ module.exports = (function() {
 
 
   var observeEmitter = function(emitter) {
   var observeEmitter = function(emitter) {
     var self = this
     var self = this
+
     emitter
     emitter
-      .success(function(){
+      .success(function() {
         self.finishedEmits++
         self.finishedEmits++
         finish.call(self)
         finish.call(self)
       })
       })
-      .error(function(err){
+      .error(function(err) {
         self.finishedEmits++
         self.finishedEmits++
         self.fails.push(err)
         self.fails.push(err)
         finish.call(self)
         finish.call(self)
       })
       })
-      .on('sql', function(sql){ self.eventEmitter.emit('sql', sql) })
+      .on('sql', function(sql) {
+        if(self.eventEmitter) {
+          self.eventEmitter.emit('sql', sql)
+        }
+      })
   }
   }
 
 
   var finish = function() {
   var finish = function() {