Hide API Forum Posts

hide_api_forum_posts.user.js

// ==UserScript==
// @name     Hide API Forum Posts
// @version  1
// @grant       GM.setValue
// @grant       GM.getValue
// @include     https://us.forums.blizzard.com/en/blizzard/*
// ==/UserScript==

(async function () {
  let data = JSON.parse(await GM.getValue('hidden', '[]'));
  (new MutationObserver(function (mutationsList) {
    mutationsList.forEach(mutation => {
      mutation.addedNodes.forEach(tr => {
        if (tr.nodeName !== 'TR' || !tr.classList.contains('topic-list-item')) {
          return;
        }
        let id = tr.dataset.topicId;
        if (data.includes(id)) {
          tr.parentNode.removeChild(tr);
          return;
        }
        let span = tr.querySelector('.link-top-line');
        if (!span) {
          return;
        }
        let a = document.createElement('a');
        span.appendChild(a);
        a.style.marginLeft = '1em';
        a.style.fontSize = '75%';
        a.href = 'javascript:';
        a.appendChild(document.createTextNode('(Hide)'));
        a.addEventListener('click', function (event) {
          event.preventDefault();
          event.stopPropagation();
          tr.style.display = 'none';
          data.push(id);
          GM.setValue('hidden', JSON.stringify(data));
        }, {capture: true});
      });
    });
  })).observe(document.body, {childList: true, subtree: true});
})();