A simple userscript to automatically enable the dark theme on GW2's wiki

gw2-wiki-dark-mode.user.js

// ==UserScript==
// @name         GW2 Wiki Dark Mode
// @version      0.2
// @description  Automatically set the GW2 wiki theme to the Vector dark theme
// @author       ellielle
// @match        *://*.guildwars2.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=wiki.guildwars2.com
// @downloadURL  https://gist.github.com/ellielle/e9182e1822d089122db9c8f6981f4ba5#file-gw2-wiki-dark-mode-user-js
// @updateURL    https://gist.github.com/ellielle/e9182e1822d089122db9c8f6981f4ba5#file-gw2-wiki-dark-mode-user-js
// ==/UserScript==

(function() {
    'use strict';
    const isDarkMode = window.location.search;

    if (!isDarkMode.includes("vector")) {
        const newURL = window.location.protocol
        + "//"
        + window.location.host
        + window.location.pathname
        + window.location.search
        + (window.location.search === "" ? "?useskin=vector" : "&useskin=vector")
        + window.location.hash;

        window.location.replace(newURL);
    }
})();