Revert to legacy voting buttons on stack exchange sites

SE-legacy-voting.user.js

// ==UserScript==
// @name         Legacy Voting Buttons
// @version      0.2
// @description  Revert to legacy voting buttons on stack exchange sites
// @author       12944qwerty
// @match        https://stackexchange.com/*
// @match        https://meta.stackexchange.com/*
// @match        https://*.stackexchange.com/*
// @match        https://*.meta.stackexchange.com/*
// @match        https://stackoverflow.com/*
// @match        https://meta.stackoverflow.com/*
// @match        https://superuser.com/*
// @match        https://meta.superuser.com/*
// @match        https://askubuntu.com/*
// @match        https://meta.askubuntu.com/*
// @updateURL    https://gist.github.com/12944qwerty/0803a840748049300d225358439b6789/raw/e37b96615e657e0985bd3218864700246a9b51ed/SE-legacy-voting.user.js
// @downloadURL  https://gist.github.com/12944qwerty/0803a840748049300d225358439b6789/raw/e37b96615e657e0985bd3218864700246a9b51ed/SE-legacy-voting.user.js
// ==/UserScript==

const containers = document.getElementsByClassName("js-voting-container");

for (const container of containers) {
    const voteup = container.getElementsByClassName("js-vote-up-btn")[0];
    const votedown = container.getElementsByClassName("js-vote-down-btn")[0];
    const votecount = container.getElementsByClassName("js-vote-count")[0];

    votecount.classList.remove("fc-theme-body-font");
    votecount.classList.remove("fw-bold");
    votecount.classList.remove("fs-subheading");
    votecount.classList.remove("py4");
    votecount.classList.remove("c-pointer");
    votecount.classList.add("fc-black-500");
    votecount.classList.add("fs-title");

    voteup.dataset.selectedClasses = "fc-theme-primary";
    votedown.dataset.selectedClasses = "fc-theme-primary";
    voteup.dataset.unselectedClasses = "";
    votedown.dataset.unselectedClasses = "";

    voteup.classList.remove("fc-black-700");
    votedown.classList.remove("fc-black-700");
    voteup.classList.remove("bc-black-100");
    votedown.classList.remove("bc-black-100");
    voteup.classList.remove("as-center");
    votedown.classList.remove("as-center");
    voteup.classList.remove("bar-pill");
    votedown.classList.remove("bar-pill");
    voteup.classList.remove("ba");
    votedown.classList.remove("ba");
    voteup.classList.add("s-btn__unset");
    votedown.classList.add("s-btn__unset");

    const voteupsvg = voteup.children[0];
    const votedownsvg = votedown.children[0];

    voteupsvg.classList.remove("iconArrowUp");
    voteupsvg.classList.add("iconArrowUpLg");
    votedownsvg.classList.remove("iconArrowUp");
    votedownsvg.classList.add("iconArrowUpLg");

    voteupsvg.setAttribute("width", "36");
    voteupsvg.setAttribute("height", "36");
    voteupsvg.setAttribute("viewBox", "0 0 36 36");
    votedownsvg.setAttribute("width", "36");
    votedownsvg.setAttribute("height", "36");
    votedownsvg.setAttribute("viewBox", "0 0 36 36");

    voteupsvg.children[0].setAttribute("d", "M2 25h32L18 9 2 25Z");
    votedownsvg.children[0].setAttribute("d", "M2 11h32L18 27 2 11Z");
}