// ==UserScript==
// @name         Force Wikipedia Old (Vector) Skin
// @namespace    http://sr.ht/~weebney
// @version      0.1
// @description  Returns Wikipedia's "Vector" skin. Doesn't break history or URLs, works faster!
// @author       weebney
// @icon         https://en.wikipedia.org/favicon.ico
// @match        *://*.wikipedia.org/wiki/*
// @grant        none
// @run-at       document-start
// @license      BSD-2-Clause
// ==/UserScript==
(function() {
'use strict';
const url = window.location
const strippedURL = url.toString().split('?')[0]
let params = new URLSearchParams(url.search);
if (!params.get("useskin")) {
params.append("useskin", "vector")
url.replace(strippedURL + '?' + params.toString())
} else {
params.delete("useskin")
let newParamString; params.toString() ? newParamString = '?' + params.toString() : newParamString = ''
window.history.replaceState(null, document.title, strippedURL + newParamString)
}
})();