☰

Hide Bot Comments

Removes comments made by bots on websites such as YouTube.

As of 2022-02-14. See the latest version.

  1. // ==UserScript==
  2. // @name         Hide Bot Comments
  3. // @namespace    https://theusaf.org
  4. // @version      1.2.0
  5. // @description  Removes comments made by bots on websites such as YouTube.
  6. // @author       theusaf
  7. // @match        https://www.youtube.com/**
  8. // @copyright    2022 theusaf
  9. // @license      MIT
  10. // @grant        none
  11. // ==/UserScript==
  12.  
  13. const SITES = Object.freeze({
  14.     YOUTUBE: [
  15.       /^\s{2,}/, // starts with too much whitespace
  16.       /^(\s*@.+)?\s*(https:\/\/[^\s]+|[\n.\s])+$/, // only links and other punctuation
  17.       /^(\s*@.+)?[A-Z\s\r\n!]*https:\/\/[^\s]+[A-Z\s\r\n!]*$/, // all caps and a link
  18.       /^(\s*@.+)?\s*https:\/\/[^\s]+(\n|.|\s)*(dont miss|Dont miss|Bots for u|Finally|💜|fax)/, // A link and a random message afterwards
  19.       /^(\s*@.+)?\s*This\s*https:\/\/[^\s]+/, // This + link
  20.       /^(\s*@.+)?\s*https:\/\/[^\s]+\s*[a-z]+\s*$/, // link + random "word"
  21.       /PRIVATE S\*X/,
  22.       /-{5,}/, // too many "-"
  23.       /SPECIAL FOR YOU/, // common phrase
  24.       (text) => {
  25.         const smallLatinCaps = text.match(/[ᴀʙᴄᴅᴇғɢʜɪᴊᴋʟᴍɴᴏᴘᴏ̨ʀsᴛᴜᴠᴡxʏᴢ\s]/g)?.length ?? 0;
  26.         return smallLatinCaps / text.length > 0.7 && text.length > 10;
  27.       }
  28.     ]
  29.   }),
  30.   site = getCurrentSite(),
  31.   commentMutationListener = new MutationObserver((mutations) => {
  32.     for (const mutation of mutations) {
  33.       for (const node of mutation.addedNodes) {
  34.         const text = getCommentText(node, site);
  35.         if (text) {
  36.           if (isCommentLikelyBotComment(text, site)) {
  37.             node.style.display = "none";
  38.           }
  39.         }
  40.       }
  41.     }
  42.   });
  43.  
  44. commentMutationListener.observe(document.body, {
  45.   subtree: true,
  46.   childList: true
  47. });
  48.  
  49. /**
  50.  * Determines whether a comment is likely spam.
  51.  *
  52.  * @param {String} text The comment's content
  53.  * @param {Object} site The website the comment is from
  54.  * @return {Boolean}
  55.  */
  56. function isCommentLikelyBotComment(text, siteChecks) {
  57.   for (const check of siteChecks) {
  58.     if (typeof check === "function") {
  59.       if (check(text)) {
  60.         return true;
  61.       }
  62.     } else {
  63.       // assume regex
  64.       if (check.test(text)) {
  65.         return true;
  66.       }
  67.     }
  68.   }
  69.   return false;
  70. }
  71.  
  72. function getCommentText(node, site) {
  73.   switch (site) {
  74.     case SITES.YOUTUBE: {
  75.       if (node.nodeName === "YTD-COMMENT-RENDERER") {
  76.         return node.querySelector("#content-text").textContent;
  77.       }
  78.     }
  79.   }
  80.   return null;
  81. }
  82.  
  83. function getCurrentSite() {
  84.   switch (location.hostname) {
  85.     case "www.youtube.com": {
  86.       return SITES.YOUTUBE;
  87.     }
  88.   }
  89. }