Youtube hidden spoilers.user

youtube_hidden_spoilers.user.js

// ==UserScript==
// @name         Youtube hidden spoilers
// @namespace    http://tampermonkey.net/
// @version      1.2
// @description  try to take over the world!
// @author       You
// @match        *://*.youtube.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant        none
// ==/UserScript==


(function() {
    hideTitleOnChange()
    applyStyles()
})();

function hideTitleOnChange() {
    const maskedTitle = '*****'
    document.title = maskedTitle
    
    const titleEl = document.getElementsByTagName("title")[0];
    const docEl = document.documentElement;

    if (docEl && docEl.addEventListener) {
        docEl.addEventListener("DOMSubtreeModified", function(evt) {
            if (document.title === maskedTitle) return;
            
            const t = evt.target;
            if (t === titleEl || (t.parentNode && t.parentNode === titleEl)) {
               document.title = maskedTitle
            }
        }, false);
    } else {
        document.onpropertychange = function() {
            if (document.title == maskedTitle) return;
            if (window.event.propertyName == "title") {
                document.title = maskedTitle
            }
        };
    }
}

function applyStyles(){
    const style = document.createElement('style')
    style.innerHTML = `
        ytd-rich-grid-media[mini-mode] #video-title.ytd-rich-grid-media {
          font-size: 0
        }
        img.yt-core-image--fill-parent-height, img.yt-img-shadow {filter: blur(60px)}
        .ytp-ce-element.ytp-ce-element-show,
        #video-title {filter: blur(10px)}

        ytd-thumbnail-overlay-time-status-renderer,
        .title.ytd-video-primary-info-renderer {opacity: 0 !important}

        .ytp-larger-tap-buttons .ytp-time-display,
        #video-title.ytd-compact-video-renderer,
        .ytp-time-duration,
        h1.ytd-watch-metadata,
        .ytp-progress-bar {display: none !important}

        #video-title.ytd-video-renderer,
        .html5-video-player a {font-size: 0 !important}
    `

     document.body.appendChild(style)
 }