src/cm/media/js/lib/yui/yui3-3.15.0/build/series-areaspline/series-areaspline-min.js
add some more custom config and put every thing in comment in the custom.yaml template
YUI.add("series-areaspline",function(e,t){e.AreaSplineSeries=e.Base.create("areaSplineSeries",e.AreaSeries,[e.CurveUtil],{drawSeries:function(){this.drawAreaSpline()}},{ATTRS:{type:{value:"areaSpline"}}})},"@VERSION@",{requires:["series-area","series-curve-util"]});