Requirejs: Uncaught TypeError: Cannot freeze

[numediaweb]

I'm using this module inside requirejs and I don't know what I changed and now I get this error:

datepickk.js:1146 Uncaught TypeError: Cannot freeze
    at Function.freeze (<anonymous>)
    at Datepickk (datepickk.js:1146)
    at Object.execCb (require.js:1693)
    at Module.check (require.js:881)
    at Module.enable (require.js:1173)
    at Module.init (require.js:786)
    at callGetModule (require.js:1200)
    at Object.completeLoad (require.js:1587)
    at HTMLScriptElement.onScriptLoad (require.js:1714)

If I just return that; the script works as it should inside requirejs.
What drives me crazy is It used to work before and I didn't change anything on my code!

This is how I call it:

# main.js
require.config({
    paths: {
        'Datepickk': '../../build/bower_components/datepickk/dist/datepickk'
    }
});

# home.js
define(['jquery', 'Chart', 'Datepickk'], function ($, Chart, datepicker) {
    var Widget = function () {
    };
    Widget.prototype = {
        init: function (scope) {
            "use strict";
            var widget = this;
            console.log(datepicker);
...

[numediaweb]

A js fiddle http://jsfiddle.net/numediaweb/5xbqqr0j/11/

[numediaweb]

I finally got an answer here explaining why this happens:
https://stackoverflow.com/questions/44808397/requirejs-amd-module-not-defined/44822995#44822995

[crsten]

Thanks for your research!

If you find the time i would be thankful if you send a PR.

Otherwise i will try to fix it asap