in book/master_middleman/source/javascripts/waypoints/context.js [73:86]
Context.prototype.createThrottledScrollHandler = function() {
var self = this
function scrollHandler() {
self.handleScroll()
self.didScroll = false
}
this.adapter.on('scroll.waypoints', function() {
if (!self.didScroll || Waypoint.isTouch) {
self.didScroll = true
Waypoint.requestAnimationFrame(scrollHandler)
}
})
}