gistfile1.js

// Initialize nconf
var nconf = require('nconf');

// Get the route
var route = require('./route.js');

// Setup the route
express.get('/', route(nconf));

gistfile2.js

function route(req, res) {
  // this = nconf
  // req = Express' this.request
  // res = Express' this.response
  
  res.send('Hello world!');
}

module.exports = function(conf) {
  return function(req, res) {
    // Store Express' bind
    var self = this;
    
    // Bind to nconf and call the route with Express' this.request and this.response.
    return route.bind(conf)(self.request, self.response);
  };
};