xbegone.js

const observer = new MutationObserver(init);
const titleObserver = new MutationObserver(handlePageTitleChange);

titleObserver.observe(document.querySelector("head"), {
    childList: true 
});

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

function init() {
    let browserRuntime = undefined;

    if (typeof browser !== "undefined") {
        browserRuntime = browser;
    } else {
        browserRuntime = chrome;
    }

    const logo = document.querySelector("header svg");

    if (logo) {
        replaceLogo(logo);
        observer.disconnect();
    }

    replaceFavicon(browserRuntime);
}

function replaceLogo(logo) {
    logo.parentElement.innerHTML = '<svg viewBox="0 0 24 24" aria-hidden="true" class="r-13v1u17 r-4qtqp9 r-yyyyoo r-16y2uox r-8kz0gk r-dnmrzs r-bnwqim r-1plcrui r-lrvibr r-lrsllp"><g><path d="M23.643 4.937c-.835.37-1.732.62-2.675.733.962-.576 1.7-1.49 2.048-2.578-.9.534-1.897.922-2.958 1.13-.85-.904-2.06-1.47-3.4-1.47-2.572 0-4.658 2.086-4.658 4.66 0 .364.042.718.12 1.06-3.873-.195-7.304-2.05-9.602-4.868-.4.69-.63 1.49-.63 2.342 0 1.616.823 3.043 2.072 3.878-.764-.025-1.482-.234-2.11-.583v.06c0 2.257 1.605 4.14 3.737 4.568-.392.106-.803.162-1.227.162-.3 0-.593-.028-.877-.082.593 1.85 2.313 3.198 4.352 3.234-1.595 1.25-3.604 1.995-5.786 1.995-.376 0-.747-.022-1.112-.065 2.062 1.323 4.51 2.093 7.14 2.093 8.57 0 13.255-7.098 13.255-13.254 0-.2-.005-.402-.014-.602.91-.658 1.7-1.477 2.323-2.41z"></path></g></svg>';
}

function replaceFavicon(browserRuntime) {
    const favicon = document.createElement("link");
    favicon.rel = "icon";
    favicon.href = browserRuntime.runtime.getURL("files/twitter.ico");
    document.head.appendChild(favicon);
}

function handlePageTitleChange(mutationsList) {
    for (const mutation of mutationsList) {
      if (mutation.type === "childList") {
                replacePageTitle();
      }
    }
  }

function replacePageTitle() {
    const targetString = "/ X";
    const replacementString = "/ Twitter";

    if (document.title == "X"){
        document.title = document.title.replace("X", "Twitter");
    }else if (document.title.includes(targetString)){
        document.title = document.title.replace(targetString, replacementString);
    }
  }