issuesかプルリクかわかりやすくする

github.user.js

// ==UserScript==
// @name         issuesかプルリクかわかりやすくする
// @namespace    https://gist.github.com/oieioi/
// @version      0.9
// @description  try to take over the world!
// @author       You
// @match        https://github.com/*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const body = document.querySelector('body');
    const label = document.createElement('div');
    const titleElement = document.querySelector('title');

    const prettyTitle = (titleElement, newTitle) => {
        const regNotification = /^\(\d+\)/;
        const notificationCount = titleElement.innerText.match(regNotification) ? titleElement.innerText.match(regNotification)[0] : "" ;
        titleElement.innerText = titleElement.innerText.replace(regNotification, "");

        const regAdded = /^\[.+?\]/;
        if (! titleElement.innerText.match(regAdded)) {
            titleElement.innerText = "[dummy]" + titleElement.innerText;
        }

        const prefix = newTitle ? `[${newTitle}]${notificationCount}` : '';

        titleElement.innerText = titleElement.innerText.replace(regAdded, prefix);
    };


    label.style.fontSize = '3em';
    label.style.margin = '10px';
    label.style.position = 'fixed';
    label.style.bottom = '10px';

    body.append(label);

    setInterval(()=>{
        const categoryName = location.pathname.match(/\/.+?\/.+?\/(.+?)(\/|$)/) || [];
        const id = location.pathname.match(/\/.+?\/.+?\/.+?\/(\d+)/) || [];
        const newTitle = categoryName ? [categoryName[1], id[1]].filter((e)=>e).join(' #') : null;
        label.innerText = newTitle;
        prettyTitle(titleElement, newTitle);

    }, 500);

})();