hidden spam topics on Hatena Space for UserScript

hatenaspace-ham-topics.user.js

// ==UserScript==
// @name        Hatena Space ham topics
// @namespace   http://noromanba.flavors.me
// @description hidden spam topics on Hatena Space for UserScript
// @include     http://space.hatena.ne.jp/*
// @grant       none
// @noframes
// @run-at      document-end
// @version     2016.2.3.0
// @homepage    https://gist.github.com/noromanba/0606d92a17c3c17d5902
// @downloadURL https://gist.github.com/noromanba/0606d92a17c3c17d5902/raw/hatenaspace-ham-topics.user.js
// @contributor a-kuma3     http://let.hatelabo.jp/a-kuma3/let/hLHUy6LimuEc
// @license     MIT License http://opensource.org/licenses/MIT
// @author      noromanba   http://noromanba.flavors.me
// @icon        https://upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Japanese_Weather_symbol_%28Dust_storm_or_Sand_storm%29.svg/32px-Japanese_Weather_symbol_%28Dust_storm_or_Sand_storm%29.svg.png
// @icon64      https://upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Japanese_Weather_symbol_%28Dust_storm_or_Sand_storm%29.svg/64px-Japanese_Weather_symbol_%28Dust_storm_or_Sand_storm%29.svg.png
// ==/UserScript==

// Icon (PD by Monaneko)
// https://commons.wikimedia.org/wiki/File%3AJapanese_Weather_symbol_%28Dust_storm_or_Sand_storm%29.svg

// Devel
// https://gist.github.com/noromanba/0606d92a17c3c17d5902

// Bookmarklet
// http://let.hatelabo.jp/noromanba/let/hLHUz7vPqd5w

// via
// http://a-kuma3.hatenablog.com/entry/hatena_space_backup


// e.g.
// http://space.hatena.ne.jp/~/14290001378108575017
(() => {
    const spamTitle = /^(?:https?:\/\/\S+|[A-z0-9 =+<>*$'.!"\[\]():\^&#\-'{}_~\/|]+$)/;

    // support expand/close topics
    Array.from(document.body.querySelectorAll([
            '.board-list [data-topic-id]'
    // topic list AWFUL markup on space top;
    // <li "> or <li class="hide"> WTF
    ])).concat(Array.from(document.body.querySelectorAll([
            '.space-topic-data'
    ]), count => count.parentNode)).forEach(topic => {
        // reset visibility
        topic.classList.remove('hide');

        const title = (topic.querySelector('a[title]') || {}).title;
        if (!title || spamTitle.test(title)) {
            topic.style.display = 'none';
            return;
        }
    });
})();