Stuff

user.js

// ==UserScript==
// @name        AntiNintendoSpoiler
// @namespace   foobar
// @include     https://www.youtube.com/*
// @version     1
// @grant       none
// ==/UserScript==

var originalOpen = XMLHttpRequest.prototype.open;
XMLHttpRequest.prototype.open = function() {

    originalOpen.apply(this, arguments);

    if (arguments[1].indexOf('youtube.com') !== -1) {
        this.addEventListener('readystatechange', (function() {
            if (this.readyState === 4) {
                setTimeout(function() {
                     hide();
                }, 0);
                setTimeout(function() {
                     hide();
                }, 50);
            }

        }).bind(this), false);
    }

};

var users = {
    GameXplain: 'UCfAPTv1LgeEWevG8X_6PUOQ',
    Nintendo: 'UCGIY_O-8vW4rfX98KlMkvRg',
    'Game Informer': 'UCK-65DO2oOxxMwphl2tYtcw',
    Eurogamer: 'UCciKycgzURdymx-GRSY2_dA',
    Polygon: 'UCuVxaQDraOja6xKidcmoufA',
    'Nintendo Deutschland': 'UCic48jpZWaG_kQ0sj9pTS1w',
    'Hylian Hero': 'UCOUfuh4-qUufHhbGxCiNy1A',
    'IM Switch': 'UC6gMkl0numkycRMb7KRrR4Q',
    FamilyGames: 'UCgfc8GB-s6h6eDyXRqRo2aQ',
    Dystify: 'UCpkBAobv7YgNQ7pPFYp_Ycw',
    NintendoHQ: 'UC5fMJlpZ5kEQVXa8XrsNPgQ',
    'Commonwealth Realm': 'UCOkE7SxzwKUII9CxfggMSIw',
    ZeldaMaster: 'UC-ol6cvdiLjBn4FrGgvhdrA',
    Domtendo: 'UCXGPGV90SPduyn9LVX9s7Kw',
    SwitchForce: 'UC8wucBti_VxVFhUAzOLyMHw',
    IGN: 'UCKy1dAqELo0zrOtPkf0eTMw',
    GoNintendo: 'UCvQPbLRLHSUWy7km3iaN4ng',
    'Easy Allies': 'UCZrxXp1reP8E353rZsB3jaA',
    'GameOver Jesse': 'UCU3C2fxkkG2qPiVfxZH_7tw',
    GameSpot: 'UCbu2SsF-Or3Rsn3NxqODImw',
    'Dante Nintendo Switch World': 'UCRnPfho_erzTmDORFBDY55Q',
    Blunty: 'UCppifd6qgT-5akRcNXeL2rw',
    'Katie Wilson': 'UCVi7xUv8w1ytXMcsT8MuYBA',
    'COGconnected': 'UCrk7jhruZVuLshUNh1qUi4g'
};

var selector = '[data-ytid="' + Object.values(users).join('"], [data-ytid="') + '"]';
var originalLoad;

function hide() {

    var nodes = document.querySelectorAll(selector),
        exp = /video-list-item|yt-lockup-video|item-section/ig;

    console.log('Hiding ', nodes.length, ' videos...');

    Array.prototype.slice.call(nodes).forEach(function(e) {
        try {
            var p = e.parentNode;
            while(p && p.nodeName !== 'BODY' && !exp.test(p.classList.toString())) {
                p = p.parentNode;
            }
            if (p && (p.nodeName === 'DIV' || p.nodeName === 'LI')) {
              p.querySelectorAll('img')[0].style.opacity = '0';
              var desc = p.querySelectorAll('[aria-describedby]')[0];
              if (desc) {
                  desc.innerText = 'Potential Spoilers';
              }
            }

        } catch(e) {
            console.log(e);
        }

    });

    if (!originalLoad && window.ytmod.player.endscreen.prototype.load) {

        originalLoad = window.ytmod.player.endscreen.prototype.load;

        window.ytmod.player.endscreen.prototype.load = function() {
            originalLoad.call(this);

            var nodes = document.querySelectorAll('.ytp-endscreen-content > a');
            Array.prototype.slice.call(nodes).forEach(function(node) {

                try {
                    var authorNode = node.querySelector('.ytp-videowall-still-info-author'),
                        userName = authorNode.innerText.split('•')[0].trim();

                    if (users.hasOwnProperty(userName)) {
                        node.querySelector('.ytp-videowall-still-image').style.opacity = 0;
                        authorNode.innerText = userName + ' - Potential Spoilers';
                    }

                } catch(e) {
                    console.log(e);
                }
            });

        };

    }

}

hide();