Auto expand t.co links on Twitter

auto-expand-tco-links-on-twitter.user.js

// ==UserScript==
// @name        Auto expand t.co links on Twitter
// @namespace   https://github.com/lgp171188
// @include https://twitter.com/*
// @version     1
// @grant       none
// ==/UserScript==
function expandTwitterShortlinks() {
  var twitter_shortlinks = document.getElementsByClassName('twitter-timeline-link');
  for (var i = 0; i < twitter_shortlinks.length; i++) {
    var shortlink = twitter_shortlinks[i];
    if (shortlink.classList.contains('tco-url-expanded')) {
      continue;
    } 
    else {
      var actual_url = shortlink.getAttribute('data-expanded-url');
      shortlink.setAttribute('href', actual_url);
      shortlink.classList.add('tco-url-expanded');
    }
  }
}
document.addEventListener('DOMNodeInserted', expandTwitterShortlinks, false);
expandTwitterShortlinks();