title: Can some one explain what are the error codes in nodejs (not status codes)
body: <p>This question I faced in my Interviews many times, but still I can't find the answer for this. I already googled it, but did not find the exact answer for this. Pls anybody let me know the exact answer for this.</p>
  
  <p>Question: What are Error Codes in NodeJs?</p>
  
  <p>I answered the error status codes. But the Interviewer said that, am not asking status codes. Pls explain the answer. Thank you in advance.</p>