Following is the problematic code.
require([
"esri/map",
"esri/toolbars/edit",
"esri/graphic",
"esri/symbols/SimpleMarkerSymbol",
"esri/symbols/SimpleLineSymbol",
"esri/symbols/SimpleFillSymbol",
"esri/layers/GraphicsLayer",
"dojo/parser",
"dijit/registry",
"dijit/layout/BorderContainer",
"dijit/layout/ContentPane",
"dijit/form/Button",
"dijit/WidgetSet",
"dojo/domReady!"
], function(
Map, Edit, Graphic,
SimpleMarkerSymbol, SimpleLineSymbol, SimpleFillSymbol, GraphicsLayer,
parser, registry
){}