lichess-change-bot-title-to-cheater.js

// ==UserScript==
// @name         [lichess.org] Change Bot Title to "CHEATER"
// @namespace    http://tampermonkey.net/
// @version      2025-06-12
// @description  Efficiently replaces BOT with CHEATER using MutationObserver
// @author       Leung Ho Ching
// @match        https://lichess.org/*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function replaceBotText() {
        document.querySelectorAll('.utitle').forEach(item => {
            if (item.textContent.includes('BOT')) {
                item.textContent = item.textContent.replace("BOT", "CHEATER");
            }
        });
    }

    // Initial run for existing elements
    replaceBotText();

    // Set up MutationObserver to watch for DOM changes
    const observer = new MutationObserver(mutations => {
        mutations.forEach(mutation => {
            if (mutation.addedNodes.length) {
                replaceBotText();
            }
        });
    });

    observer.observe(document.body, {
        childList: true,
        subtree: true
    });
})();