Block toots containing links to a certain UK news site on Mastodon.social

mastodon_filter_links.js

// ==UserScript==
// @name         Mastodon Filter Links
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Until we get per-domain link filtering, this is our best option.
// @author       Catherine Winters
// @match        https://mastodon.social/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=mastodon.social
// @grant        none
// ==/UserScript==

(new MutationObserver(check)).observe(document, {childList: true, subtree: true});

function check(changes, observer) {
  if(document.querySelector(".drawer__tab")) {
    console.log("More toots loaded.");

    //var regex = /dailymail.co.uk/g
    var regex = /https?:\/\/(?:www\.)?(?:mol\.im|dailymail\.co\.uk)\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/gi;

    var textLink = document.querySelectorAll("a");
    textLink.forEach( e => {
      if (regex.test(e.href)) {
          console.log(e);
        getParentsUntil(e, 'article');
      }
    });
  }
}

const getParentsUntil = (el, selector) => {
  let parents = [],
    _el = el.parentNode;
  while (_el && typeof _el.matches === 'function') {
    parents.unshift(_el);
    if (_el.matches(selector)) {
        _el.remove();
        console.log("Removed toot containing a Daily Mail link.");
        return parents;
    }
    else _el = _el.parentNode;
  }
  return [];
};