TypeError: slickness.on is not a function about angular-slick-carousel HOT 6 CLOSED

return $timeout(function() {
    initOptions();
    var slickness;
    slickness = angular.element(element).hasClass("slick-initialized") ? element.slick("getSlick") : element.slick(options), scope.internalControl = options.method || {}, slickMethodList.forEach(function(value) {
        scope.internalControl[value] = function() {
            var args;
            args = Array.prototype.slice.call(arguments), args.unshift(value), slickness.slick.apply(element, args)
        }
    }), slickness.on("afterChange", function(event, slick, currentSlide, nextSlide) {
        "undefined" != typeof options.event.afterChange && options.event.afterChange(event, slick, currentSlide, nextSlide)
    }), "undefined" != typeof options.event.beforeChange && slickness.on("beforeChange", function(event, slick, currentSlide, nextSlide) {
        options.event.beforeChange(event, slick, currentSlide, nextSlide)
    }), "undefined" != typeof options.event.breakpoint && slickness.on("breakpoint", function(event, slick, breakpoint) {
        options.event.breakpoint(event, slick, breakpoint)
    }), "undefined" != typeof options.event.destroy && slickness.on("destroy", function(event, slick) {
        options.event.destroy(event, slick)
    }), "undefined" != typeof options.event.edge && slickness.on("edge", function(event, slick, direction) {
        options.event.edge(event, slick, direction)
    }), slickness.on("init", function(event, slick) {
        "undefined" != typeof options.event.init && options.event.init(event, slick)
    }), "undefined" != typeof options.event.reInit && slickness.on("reInit", function(event, slick) {
        options.event.reInit(event, slick)
    }), "undefined" != typeof options.event.setPosition && slickness.on("setPosition", function(event, slick) {
        options.event.setPosition(event, slick)
    }), "undefined" != typeof options.event.swipe && slickness.on("swipe", function(event, slick, direction) {
        options.event.swipe(event, slick, direction)
    })
})