),F=[],U=new I;U.equals=function(e,t){return x(e.node)===t},p.prototype={append:function(e){var t=new p(e);return this.childNodes.push(t),t},sync:function(e){if(!this.skip){for(var t=this.node,o=this.childNodes,i=a(x(t)),s=e||new WeakMap,c=U.calculateSplices(o,i),l=0,u=0,d=0,p=0;p<c.length;p++){for(var h=c[p];d<h.index;d++)u++,o[l++].sync(s);for(var f=h.removed.length,m=0;m<f;m++){var w=R(i[u++]);s.get(w)||r(w)}for(var v=h.addedCount,g=i[u]&&R(i[u]),m=0;m<v;m++){var b=o[l++],y=b.node;n(t,y,g),s....

var oldNodes=listener._nodes;var info={target:this.node,addedNodes:[],removedNodes:[]};var splices=Polymer.ArraySplice.calculateSplices(newNodes,oldNodes);for(var i=0,s;i<splices.length&&(s=splices[i]);i++){for(var j=0,n;j<s.removed.length&&(n=s.removed[j]);j++){info.removedNodes.push(n);}}