/**
* Handles the touchstart event. If the touch happened close enough
* to a splitter starts dragging.
- * @param {TouchEvent} e The touch event.
+ * @param {Event} e The touch event.
*/
handleTouchStart_: function(e) {
+ e = /** @type {TouchEvent} */ (e);
if (e.touches.length != 1)
return;
var clientX = e.touches[0].clientX;