New reddit: Prevent middle click scroll

Prevents the middle click scroll when middle clicking posts on the new reddit layout

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// ==UserScript==
// @name         New reddit: Prevent middle click scroll
// @namespace    https://greasyfork.org/users/649
// @version      1.0.8
// @description  Prevents the middle click scroll when middle clicking posts on the new reddit layout
// @author       Adrien Pyke
// @match        *://*.reddit.com/*
// @grant        GM_openInTab
// @require      https://cdn.jsdelivr.net/gh/fuzetsu/userscripts@ec863aa92cea78a20431f92e80ac0e93262136df/wait-for-elements/wait-for-elements.js
// ==/UserScript==

(() => {
  'use strict';

  const Util = {
    q(query, context = document) {
      return context.querySelector(query);
    },
    qq(query, context = document) {
      return Array.from(context.querySelectorAll(query));
    }
  };

  const mousedown = e => {
    if (e.button === 1) return false;
  };

  waitForElems({
    sel: '.Post',
    onmatch(post) {
      post.onmousedown = mousedown;

      const links = Util.qq('a[data-click-id="comments"]', post);
      if (links.length) {
        const link = links[links.length - 1];
        if (link) {
          post.onclick = post.onauxclick = e => {
            if (
              e.button === 1 &&
              e.target.tagName !== 'A' &&
              e.target.parentNode.tagName !== 'A'
            ) {
              e.preventDefault();
              e.stopImmediatePropagation();
              GM_openInTab(link.href, true);
            }
          };
        }
      }
    }
  });
})();