d3.queue()
.defer(d3.csv,"/csv/nodes.csv")
.defer(d3.csv,"/csv/links.csv")
.await(toJson);


function toJson(error,csvNodes,csvLinks){
  require([
      "esri/views/MapView",
      "esri/Map",
      //...
      "dojo/domReady!"],function(MapView, Map,...){

             // create a map, mapview & featurelayers using csvNodes & csvLinks


   });

}