Add Twitter List icon to tabbar (next to Profile icon)

TwitterListsInMenubar.user.js

// ==UserScript==
// @name         Lists in tabbar
// @version      1.0
// @description  Show Lists icon next to the user avatar
// @author       You
// @match        https://twitter.com/*
// @grant        none
// ==/UserScript==

function ready(fn) {
  if (document.attachEvent ? document.readyState === "complete" : document.readyState !== "loading"){
    fn();
  } else {
    document.addEventListener('DOMContentLoaded', fn);
  }
}

ready( function() {
    const listsItem = document.querySelectorAll('#user-dropdown > div > ul > li:nth-child(4)')[0].cloneNode(true);
    listsItem.style.textDecoration = 'none';
    document.querySelectorAll('#user-dropdown')[0].insertAdjacentHTML('afterend', listsItem.outerHTML);
});