The files in this directory were downloaded from: https://github.com/jquery/jquery-ui/tree/master/ui/i18n
These files were meant to work with the exploded version of jQuery (not the single file), and so the following changes were made:
6c6,8
< define( [ "../widgets/datepicker" ], factory );
---
> define( [ 'jquery', 'jquery-ui' ], function($) {
> return factory($.datepicker);
> });