na.js

You reference the dojo.js instead e.g
<script src="arcgis-js-api/dojo/dojo.js"></script>
<script src="init.js"></script>

init.js
require({
        packages: [{
            name: "myPackage",
            location: window.path + "/myPackage"
        },
        {
            name: "dijit",
            location: window.path + "/arcgis-js-api/dijit"
        },
        {
            name: "esri",
            location: window.path + "/arcgis-js-api/esri"
        },
        {
            name: "xstyle",
            location: window.path + "/arcgis-js-api/xstyle"
        }] //anything else such as dgrid
    });

require(["myPackage/App", "dojo/domReady!"], function (App) {
  var app = new App();
})