RequireJS jQuery adapter approach

config.js

//Set up the adapter config, so that any module asking
//for jquery gets an adapter module that has modified
//jquery before other modules can use it.
//Needs RequireJS 2.0+ to work correctly
//More info on map config:
//http://requirejs.org/docs/api.html#config-map
requirejs.config({
  map: {
    '*': {
      'jquery': 'jquery.adapter'
    },
    'jquery.adapter': {
      'jquery': 'jquery'
    }
  }
});

jquery.adapter.js

define(['jquery'], function ($) {
    //Modify jQuery here.

    //If you wanted, this module can
    //also list some jquery plugins to have them already
    //attached to the jquery object. However, if you do
    //that, then you need to set up the requirejs config
    //to either specify a map config for those plugins so
    //that they get the real jquery, or use shim config that
    //specifies 'jquery.adapter' as a dependency instead of 'jquery',
    //if the jquery plugins do not call define() themselves.

    //Return jQuery to set this module value;
    return $;
});

you can use the same pattern to avoid exposing globals:

// jquery.adapter.js
define(['jquery'], function($){
   // avoid exposing any globals
   return $.noConflict(true);
});

been doing it on almost all projects.