2ch tree post

делает треды древовидными

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         2ch tree post
// @namespace    http://tampermonkey.net/
// @version      1.3
// @description  делает треды древовидными
// @author       You
// @match        http://2ch.hk/*/res/*
// @match        https://2ch.hk/*/res/*
// @match        http://2ch.life/*/res/*
// @match        https://2ch.life/*/res/*
// @grant        none
// @grant        GM_addStyle
// ==/UserScript==

(function () {
  "use strict";
  console.time("tree script");

  // Кэшируем часто используемые селекторы
  const SELECTORS = {
    postLink: ".post__message > :nth-child(1)[data-num]",
    thread: ".thread",
  };

  // Регулярные выражения для проверки
  const REGEX = {
    postNumber: /\d+/,
    invalidLinks: /OP|→/,
  };

  // Функция для перемещения поста
  function postMove(linkPost, isNewPost = false) {
    const postContainer = linkPost.closest(".post");
    if (!postContainer) return;

    const postNumber = linkPost.innerText.match(REGEX.postNumber)?.[0];
    if (!postNumber) return;

    const targetPost = document.querySelector(`#post-${postNumber}`);
    if (!targetPost || REGEX.invalidLinks.test(linkPost.innerText)) return;

    targetPost.append(postContainer);

    if (isNewPost) {
      const handleClick = () => {
        postContainer.style.borderLeft = "2px dashed";
      };
      postContainer.addEventListener("click", handleClick, { once: true });
    }
  }

  // Обработка существующих постов
  const posts = document.querySelectorAll(SELECTORS.postLink);
  posts.forEach(postMove);

  // Наблюдение за новыми постами
  const thread = document.querySelector(SELECTORS.thread);
  if (thread) {
    const observer = new MutationObserver((mutations) => {
      for (const mutation of mutations) {
        if (mutation.addedNodes.length) {
          const newPost = mutation.addedNodes[0].querySelector(
            SELECTORS.postLink
          );
          if (newPost) postMove(newPost, true);
        }
      }
    });

    observer.observe(thread, { childList: true });
  }

  console.timeEnd("tree script");

  // Оптимизированная функция добавления стилей
  function GM_addStyle(css) {
    const styleId = "GM_addStyleBy8626";
    let style = document.getElementById(styleId);

    if (!style) {
      style = document.createElement("style");
      style.id = styleId;
      style.type = "text/css";
      document.head.appendChild(style);
    }

    style.sheet.insertRule(
      css,
      (style.sheet.rules || style.sheet.cssRules || []).length
    );
  }

  GM_addStyle(".post .post_type_reply { border-left-color: white; }");
})();