A userscript that adds a darker border underneath comments if there are some hidden after it

hiddenCommentIndicator.user.js

// ==UserScript==
// @name         Hidden comment indicator
// @namespace    http://stackexchange.com/users/4337810/
// @version      1.0
// @description  A userscript that adds a darker border underneath comments if there are some hidden after it
// @author       ᔕᖺᘎᕊ (http://stackexchange.com/users/4337810/)
// @match        *://*.stackexchange.com/questions/*
// @match        *://*.stackoverflow.com/questions/*
// @match        *://*.superuser.com/questions/*
// @match        *://*.serverfault.com/questions/*
// @match        *://*.askubuntu.com/questions/*
// @match        *://*.stackapps.com/questions/*
// @match        *://*.mathoverflow.net/questions/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    $('.question, .answer').each(function() {
        if($(this).find('.js-show-link.comments-link:visible').length) {
            var postId = $(this).attr('data-questionid') || $(this).attr('data-answerid'),
                x=[],
                y=[],
                protocol = location.protocol,
                hostname = location.hostname,
                baseUrl = protocol + '//' + hostname;
            $.get(baseUrl + '/posts/' + postId + '/comments', function(d) {
                var $commentCopy = $('#comments-' + postId + ' .comment-text .comment-copy');

                $(d).find('.comment-text').each(function(i) {
                    x.push($(this).find('.comment-copy').text());
                });

                $commentCopy.filter(function(d) {
                    y.push(x.indexOf($commentCopy.eq(d).text()));
                });

                for(var i=0;i<y.length;i++){
                    if(y[i] != y[i+1]-1) {
                        $commentCopy.filter(function(d) {
                            return $(this).text() == x[y[i]];
                        }).parent().parent().parent().find('.comment-actions, .comment-text').css('border-bottom-color', 'gray');
                    }
                }
            });
        }
    });
})();