Fix Wikipedia's design "improvements"

wikipedia.user.js

// ==UserScript==
// @name         Fix Wikipedia's design "improvements"
// @namespace    http://wikipedia.org/
// @version      1.1
// @description  https://www.mediawiki.org/wiki/Talk:Reading/Web/Desktop_Improvements
// @author       Thunderbolt/EverfreeFaerie
// @match        https://*.wikipedia.org/*
// @match        https://*.mediawiki.org/*
// @match        https://*.wikimedia.org/*
// @icon         https://en.wikipedia.org/static/apple-touch/wikipedia.png
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const theGoodStuff = 'useskin=vector'
    let str = window.location.href.split('#')
    if (str[0].indexOf(theGoodStuff) === -1) {
        if (str[0].indexOf('?') === -1) {
            str[0] += '?';
        }
        else {
            str[0] += '&';
        }

        str[0] += theGoodStuff;

        history.replaceState(null, null, str.join('#'));
        window.location.reload();
    }
})();