RequireJS: Avoid double jQuery load and version conflict in main.js

main.js

;(function () {
  var paths = { ... };
    
    //HANDLE JQUERY IF LOADED ALREADY TO AVOID OVERWRITING EXISTING JQUERY PROPERTIES AND PLUGINS
    //CHECK FOR OLD VERSIONS OF JQUERY
    var oldjQuery = !!(window.jQuery && !!window.jQuery.fn.jquery.match(/^1\.[0-4]/));

    //LOAD JQUERY IF NOT AVAILABLE OR BELOW MIN
    if (!window.jQuery || oldjQuery) {
        paths.jquery = [
            '//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min',
            //If the CDN location fails, load from this location
            'libs/jquery/jquery.min'
        ];
    } else {
        //REGISTER THE CURRENT JQUERY
        define('jquery', [], function () { return window.jQuery; });
    }
    
    //CONFIGURE REQUIRE JS
    require.config({
        ...
        paths: paths,
        ...
    });

    //START REQUIRE JS
    require([
        'jquery',
        'app'
    ], function ($, App) {
        //HANDLE MULTIPLE JQUERY VERSIONS IF NECESSARY
        if (oldjQuery) $.noConflict(true);

        //INITIALIZE APP
        App.init();
    });
})();