Forcing express.js to use Fibres for ALL REQUESTS.

fiberify.js

import Fiber from 'fibers';
// Modify express to always spawn a new fibre if none are active.
export default function (router) {
  var oldProcess = router.process_params;
  if (oldProcess)
    router.process_params = function(...args) {
      if (!Fiber.current)
        Fiber(oldProcess.bind(router, ...args)).run();
      else
        oldProcess.apply(router, args);
    };
  return router;
}

server.js

import express from 'express';
import fiberify from './fiberify.js';
import wait from 'wait.for';
import fs from 'fs';

let app = fiberify(express()); // Don't forget to also do this for every router you create with express.Router()

app.get('/', function(req, res, next) { // This is already running inside a fibre.
  let content = wait.for(fs.readFile, 'index.html');
  res.send(content);
});