Userscript to remove t.co shortening from Tweetdeck outgoing links

FixTweetdeckLinks.js

// ==UserScript==
// @name         FixTweetdeckLinks
// @namespace    http://github.com/vuori
// @version      1.0
// @description  Removes t.co shortening from Tweetdeck outgoing links
// @author       vuori
// @match        https://tweetdeck.twitter.com/*
// @homepageURL  https://gist.github.com/vuori/1abeb28630bb2c91fd0792472ea8c13f
// @updateURL    https://gist.githubusercontent.com/vuori/1abeb28630bb2c91fd0792472ea8c13f/raw/FixTweetdeckLinks.js
// @grant        GM_log
// ==/UserScript==

(function() {
    'use strict';

    function cleanNodes(nodes) {
        for (let elem of nodes) {
            const fullUrl = elem.dataset.fullUrl;
            if (!fullUrl)
                continue;

            //GM_log(`FixTweetdeckLinks: replacing ${elem.getAttribute('href')} with ${fullUrl}`);

            // Replace silly t.co link with actual link and delete title which was hiding the shortlink
            // (and is now identical to href)
            elem.setAttribute('href', fullUrl);
            delete elem.dataset.fullUrl;
            elem.removeAttribute('title');
        }
    }

    const linkObserver = new MutationObserver((recordList) => {
        for (let record of recordList) {
            if (!record.addedNodes)
                return;

            for (let elem of record.addedNodes) {
                if (elem.tagName !== 'ARTICLE')
                    continue;

                cleanNodes(elem.querySelectorAll('a.url-ext'));
            }
        }
    });
    linkObserver.observe(document.body, { childList: true, subtree: true });
})();