Youtube. Move your lang to top of the list of translate languages

youtube-langs-sort.js

let langToUp = 'Русский';
settingsObserver = new MutationObserver((list, observer)=>{
    list.forEach(mutation=>{
        if(mutation.addedNodes.length){
            let node = [...mutation.addedNodes].find(node=>node.innerText.indexOf(langToUp)>-1);
            if(node){
                setTimeout(()=>{
                    let doc = document.querySelectorAll('.ytp-panel-menu')[0];
                    if(!doc) return;
                    [...doc.children]
                    .sort((a,b)=>{
                        if(a.innerText.indexOf(langToUp)>-1){return -1;}
                        if(b.innerText.indexOf(langToUp)>-1){return 1;} 
                        return 0;
                    }).forEach(a=>{
                        doc.appendChild(a);
                    });
                    console.log('done');
                },1000);
            }
        }
    })
});
if(document.querySelector('.ytp-settings-menu')){
    settingsObserver.observe(document.querySelector('.ytp-settings-menu'), {childList: true})
}