Twitter Community Blocker Script for Tampermonkey

// ==UserScript==
// @name         Twitter Community Blocker
// @namespace    http://tampermonkey.net/
// @version      0.1.0
// @description  Hide tweets from specific communities on the timeline.
// @author       Google Gemini
// @icon         https://www.google.com/s2/favicons?domain=twitter.com
// @downloadURL  https://pastebin.com/raw/kx2UUSxs
// @updateURL    https://pastebin.com/raw/kx2UUSxs
// @match        *://twitter.com/*
// @match        *://x.com/*
// @grant        GM_getValue
// @grant        GM_setValue
// @run-at       document-idle
// ==/UserScript==

(function() {
    'use strict';

    // make changes here
    const GM_STORAGE_KEY_BLOCKLIST = 'communitiesToBlock';
    let namesToBlock;

    const initialConfigurableNames = [
        // 'ExampleCommunity1',
        // 'ExampleCommunity2',
    ];

    const storedValue = GM_getValue(GM_STORAGE_KEY_BLOCKLIST);

    if (Array.isArray(storedValue)) {
        namesToBlock = storedValue;
    } else {
        namesToBlock = initialConfigurableNames;
        GM_setValue(GM_STORAGE_KEY_BLOCKLIST, namesToBlock);
    }

    const blockedCommunityNames = namesToBlock.map(name => String(name).trim().toLowerCase()).filter(name => name.length > 0);

    if (blockedCommunityNames.length === 0) {
        // console.log('[CommunityBlocker] No communities are currently configured for blocking.');
        return;
    }
    // stop making changes

    let debounceTimer;

    const hideTweets = () => {
        // console.log('[CommunityBlocker] Checking for tweets to hide...');
        document.querySelectorAll('article:not([data-community-blocker-processed])').forEach(article => {
            article.setAttribute('data-community-blocker-processed', 'true');

            if (article.style.display === 'none') {
                return;
            }

            const communityLinks = article.querySelectorAll('a[href*="/i/communities/"], a[href*="/community/"]');

            for (const link of communityLinks) {
                const linkText = link.textContent?.trim().toLowerCase();
                if (linkText && blockedCommunityNames.includes(linkText)) {
                    console.log(`[CommunityBlocker] Hiding tweet from community: ${link.textContent?.trim()}`);
                    article.style.display = 'none';
                    break;
                }
            }
        });
    };

    const debouncedHideTweets = () => {
        clearTimeout(debounceTimer);
        debounceTimer = setTimeout(hideTweets, 250);
    };

    const observer = new MutationObserver(mutationsList => {
        let newTweetsAdded = false;
        for (const mutation of mutationsList) {
            if (mutation.type === 'childList' && mutation.addedNodes.length > 0) {
                for (const node of mutation.addedNodes) {
                    if (node.nodeType === Node.ELEMENT_NODE) {
                        if (node.tagName === 'ARTICLE' || node.querySelector('article')) {
                            newTweetsAdded = true;
                            break;
                        }
                    }
                }
            }
            if (newTweetsAdded) break;
        }

        if (newTweetsAdded) {
            // console.log('[CommunityBlocker] New tweets detected, running debouncedHideTweets.');
            debouncedHideTweets();
        }
    });

    observer.observe(document.body, {
        childList: true,
        subtree: true,
        // attributes: true,
    });

    // setTimeout(debouncedHideTweets, 500);
    window.onload = () => setTimeout(debouncedHideTweets, 100);

})();