in _dist/alertify/alertify.js [1247:1255]
function modalClickHandler(event, instance) {
if(event.timeStamp - modalClickHandlerTS > 200 && (modalClickHandlerTS = event.timeStamp) && !cancelClick){
var target = event.srcElement || event.target;
if (instance.get('closableByDimmer') === true && target === instance.elements.modal) {
triggerClose(instance);
}
}
cancelClick = false;
}