/**
 * Touch
 * Called as first, tells the user has touched the screen
 * @events  touch
 */
Hammer.gestures.Touch = {
  name    : 'touch',
  index   : -Infinity,
  defaults: {
    // call preventDefault at touchstart, and makes the element blocking by
    // disabling the scrolling of the page, but it improves gestures like
    // transforming and dragging.
    // be careful with using this, it can be very annoying for users to be stuck
    // on the page
    prevent_default    : false,

    // disable mouse events, so only touch (or pen!) input triggers events
    prevent_mouseevents: false
  },
  handler : function touchGesture(ev, inst) {
    if(inst.options.prevent_mouseevents && ev.pointerType == Hammer.POINTER_MOUSE) {
      ev.stopDetect();
      return;
    }

    if(inst.options.prevent_default && (ev.target === inst.element)) {
      ev.preventDefault();
    }

    if(ev.eventType == Hammer.EVENT_START) {
      inst.trigger(this.name, ev);
    }
  }
};
/**
 * Touch
 * Called as first, tells the user has touched the screen
 * @events  touch
 */
Hammer.gestures.Touch = {
  name    : 'touch',
  index   : -Infinity,
  defaults: {
    // call preventDefault at touchstart, and makes the element blocking by
    // disabling the scrolling of the page, but it improves gestures like
    // transforming and dragging.
    // be careful with using this, it can be very annoying for users to be stuck
    // on the page
    prevent_default    : false,

    // disable mouse events, so only touch (or pen!) input triggers events
    prevent_mouseevents: false
  },
  handler : function touchGesture(ev, inst) {
    if(inst.options.prevent_mouseevents && ev.pointerType == Hammer.POINTER_MOUSE) {
      ev.stopDetect();
      return;
    }

    if(inst.options.prevent_default) {
      ev.preventDefault();
    }

    if(ev.eventType == Hammer.EVENT_START) {
      inst.trigger(this.name, ev);
    }
  }
};

Update touch.js