Replace "united" with "lol"

replaces the word "united" with "lol" on webpages

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// ==UserScript==
// @name         Replace "united" with "lol"
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  replaces the word "united" with "lol" on webpages
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function replaceText(node) {
        if (node.nodeType === Node.TEXT_NODE) {
            node.nodeValue = node.nodeValue.replace(/\bunited\b/gi, "lol");
        } else {
            node.childNodes.forEach(replaceText);
        }
    }

    function run() {
        replaceText(document.body);

        const observer = new MutationObserver(mutations => {
            mutations.forEach(mutation => {
                mutation.addedNodes.forEach(replaceText);
            });
        });

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

    // Wait until page is loaded (important for iPhone Safari)
    if (document.body) {
        run();
    } else {
        window.addEventListener('DOMContentLoaded', run);
    }
})();