swiper.js

// Orginal forked from 
// https://gist.github.com/localpcguy/1373518
'use strict';

var Swiper = {
    config: {
        "touchstart": {
            "x": -1,
            "y": -1
        },
        "touchmove": {
            "x": -1,
            "y": -1
        },
        "touchend": false,
        "direction": ""
    },
    touchHandler: function(event) {
        var touch;
        event.preventDefault();
        if (typeof event.touches !== 'undefined') {
            touch = event.changedTouches[0];
            var gestures = {
                'touchstart': function(event) {
                    Swiper.config[event.type].x = touch.pageX;
                    Swiper.config[event.type].y = touch.pageY;
                },
                'touchmove': function(event) {
                    Swiper.config[event.type].x = touch.pageX;
                    Swiper.config[event.type].y = touch.pageY;
                },
                'touchend': function(event) {
                    Swiper.config[event.type] = true;
                    if (Swiper.config.touchstart.x > -1 && Swiper.config.touchmove.x > -1) {
                        Swiper.config.direction = Swiper.config.touchstart.x < Swiper.config.touchmove.x ? "right" : "left";

                        console.log(Swiper.config.direction);
                    }
                }
            };

            if (gestures && typeof(gestures[event.type]) === 'function') {
                gestures[event.type].call(this, event);
            }
        }
    },
    init: function() {
        document.addEventListener('touchstart', Swiper.touchHandler, false);
        document.addEventListener('touchmove', Swiper.touchHandler, false);
        document.addEventListener('touchend', Swiper.touchHandler, false);
    }
};
Swiper.init();

slightly improved from the fork as well as bugs fixed... more on this later