patch the req object in express to include the pause() and resume() methods for event buffering (for async middleware)

gistfile1.txt

/*
 * patches the req object to have the pause() and resume() functions
 * for event buffering (for async middleware).
 * code is take from express' utils file
 */

const http = require('http'),
      req = http.IncomingMessage.prototype;

// patch req object for async middleware
(function () {

  var onData,
      onEnd,
      events = [];

  req.pause = function () {
    this.on('data', onData = function (data, encoding) {
      events.push(['data', data, encoding]);
    });
    this.on('end', onEnd = function (data, encoding) {
      events.push(['end', data, encoding]);
    });
  };

  // resume the events
  req.resume = function () {
    this.removeListener('data', onData);
    this.removeListener('end', onEnd);
    for (var i = 0, len = events.length; i < len; ++i) {
      this.emit.apply(this, events[i]);
    }
  };

})();