Userscript that automatically clicks a skip button on YouTube video ads

YouTube_Autoskip_Ads.user.js

// ==UserScript==
// @name         YouTube Autoskip Ads
// @namespace    https://gist.github.com/iRi-E
// @version      0.3.2
// @description  Automatically click skip button on YouTube video ads
// @author       iRi_E
// @license      MIT
// @match        https://www.youtube.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    let player = null;
    let videoAds = null;

    function findVideoAds(observer) {
        videoAds = player.querySelector(':scope > .video-ads');
        if (videoAds) {
            observer.observe(videoAds, { attributeFilter: ['style'], subtree: true });
            console.log('[YAA] Found video ads');
        }
        return videoAds;
    }

    const observer = new MutationObserver(() => {
        if (videoAds || findVideoAds(observer)) {
            const skipButton = videoAds.querySelector('.ytp-ad-skip-button-container, .ytp-skip-ad-button');
            if (skipButton && skipButton.style.display != 'none') {
                skipButton.click();
                console.log('[YAA] Click skip button');
            }
        }
    });

    const timer = setInterval(() => {
        player = document.getElementById('movie_player');
        if (player) {
            clearInterval(timer);
            if (!findVideoAds(observer)) {
                observer.observe(player, { childList: true });
            }
            console.log('[YAA] Observer started');
        }
    }, 1000);
    console.log('[YAA] Waiting for player to load...');
})();