User:SitX/vector-2022.js

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mw.loader.using('mediawiki.util').then(function() {
    function expandSidebar() {
        document.body.classList.add('is-menu-expanded');
        localStorage.setItem("vector-sidebar-visible", "true");
    }

    function forceSidebarForAnonymous() {
        if (mw.config.get("wgUserName") === null) {  // User is anonymous
            expandSidebar();
        }
    }

    if (document.readyState === "complete") {
        expandSidebar();
        forceSidebarForAnonymous();
    } else {
        window.addEventListener("load", function() {
            expandSidebar();
            forceSidebarForAnonymous();
        });
    }

    const observer = new MutationObserver(function(mutations) {
        mutations.forEach(function(mutation) {
            if (mutation.attributeName === "class") {
                if (!document.body.classList.contains('is-menu-expanded')) {
                    expandSidebar();
                    forceSidebarForAnonymous();
                }
            }
        });
    });

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