extend-proto A utility to inject a prototype chain, fully generic and adaptable. This largely exists for performance. Injecting a single prototype with many properties on it has been historically faster than adding those properties to an existing instance. var http = require('http')var proto = require('extend-proto') var proto = Proto({ req: http.IncomingMessage, res: http.ServerResponse})proto.req.defineProperty('kittens', { value: 'the best' }) http.createServer(function(req, res) { proto(req, res) req.kittens // the best}) MIT Licensed