if(!dojo._hasResource["dojox.charting.plot2d.StackedAreas"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. dojo._hasResource["dojox.charting.plot2d.StackedAreas"] = true; dojo.provide("dojox.charting.plot2d.StackedAreas"); dojo.require("dojox.charting.plot2d.Stacked"); dojo.declare("dojox.charting.plot2d.StackedAreas", dojox.charting.plot2d.Stacked, { constructor: function(){ this.opt.lines = true; this.opt.areas = true; } }); }