(YouTube) Create a playlist from a channel with all its videos

youtube-all-videos-to-playlist.js

// 1. Create a new playlist
// 2. Load all video thumbnails in channel in required order (scroll down until the end)
// 3. Run script:
{
const ll=document.querySelectorAll('yt-icon-button.dropdown-trigger.style-scope.ytd-menu-renderer #button'); // all videos' menu buttons
let i=0;
function loop() {
    ll[i].click(); // open menu
    document.querySelectorAll('tp-yt-paper-listbox ytd-menu-service-item-renderer')[2].click(); // click Add to Playlist
    setTimeout(() => { 
        const pl=document.querySelectorAll('tp-yt-paper-dialog tp-yt-paper-checkbox')[1]; // new playlist in menu
        if ((!pl.checked)) { // if not already checked
            pl.click(); // click to add (checkbox)
        }
        document.querySelector('yt-icon-button#close-button').click(); // close playlists menu
        i++;
        console.log(i + '/' + ll.length); // show i/len
        if (i<ll.length) { // loop non-break condition
            loop(); // continue the loop
        }
    }, 2000); // delay for playlist menu opening
}
loop(); // start the loop
}