RFC 1459 IRC reply codes
No need to re-write the wheel! This repo contains the reply codes defined by RFC 1459 section 6 and RFC 2812 section 5 as a simple JSON object so you can use them in whatever IRC thingy you are building.
Use as a node.js module:
npm install irc-replies
var reply = require'irc-replies';console.logreply'372';//RPL_MOTD