Javascript error in Slick asset causes other Javascript logic to fail

Hi,

I'm currently testing out the 8.x-2.x branch (which I couldn't select here), but I have the same problem on the other 8.x branches.

Problem description
I stumbled into this issue while enabling the 'Statistics' module. The table node_counter did not increase because there was no AJAX call to statistics.php. That call was never launched due to following Javascript (JS) error (being caused by the Zircon theme)

js_Wsb4D8DIo1NfhHje4X4ZGJpzg9cX7Ecw98j0-z-7PpA.js:8379 Uncaught TypeError: $ is not a function
    at js_Wsb4D8DIo1NfhHje4X4ZGJpzg9cX7Ecw98j0-z-7PpA.js:8379

The JS is ofcourse aggregated, but it boils down to assets/includes/slick/js/scripts.js:

$(document).ready(function() {     <---- ERROR
    $('.single-item').slick({
.....

Solution
According to some Drupal 8 documentation pages, I've noticed you have to wrap your JS code in the following template:

(function ($, Drupal) {
	'use strict';

        # YOUR CODE HERE
})(jQuery, Drupal);

So I changed the file according to the needs, and the JS error was gone. Even better, my AJAX call to statistics (which has nothing to do with it :-)) started working as well!