Removes comments made by bots on websites such as YouTube.
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// ==UserScript==
// @name Hide Bot Comments
// @namespace https://theusaf.org
// @version 1.6.1
// @description Removes comments made by bots on websites such as YouTube.
// @author theusaf
// @match https://www.youtube.com/**
// @copyright 2022 theusaf
// @license MIT
// @grant none
// ==/UserScript==
const SITES = Object.freeze({
YOUTUBE: [
// starts with too much whitespace
/^\s{2,}/,
// only links and other punctuation
/^(\s*@.+)?\s*(https:\/\/[^\s]+)(https:\/\/[^\s]+|\n.\s])+$/,
// all caps and a link
/^(\s*@.+)?\s*[A-Z\s\r\n!]*https:\/\/[^\s]+[A-Z\s\r\n!]*$/,
// A link and a random message afterwards
/^(\s*@.+)?\s*https:\/\/[^\s]+(\n|.|\s)*(It'll blow your mind\.|[dD]on'?t [mM]iss|Bots for u|Finally|💜|fax|only until|Bots are|:]|I found it :|Do not miss this|:\)|Ye[sp] ¤? (true|exactly)|(...?$))/i,
// word + link
/^(\s*@.+)?\s*(This|[Ww]ow!?)\s*https:\/\/[^\s]+/,
// phrase + line + link
/([\u0401\u0451\u0410-\u044f,.:]{15,}.*|EXPOSED:|IS FREAK!|IS GARBAGE!{1,}|shocking truth.*|his subscribers.*|will stop watching.*|yes\.?|THE GAME.*|After watching this video you will never love.*)(\n|\s)(\n|.)*https:\/\/[^\s]+/,
// link + random "word"
/^(\s*@.+)?\s*https:\/\/[^\s]+\s*[a-z]+\s*$/,
// link with a star at the end??
/https:\/\/youtu.be\/\w+\*/,
// ...
/PRIVATE S\*X|over 18|Anna is a beautiful girl/i,
// suspicious websites
/beautyzone\.\w+|\.cam|lust\.\w+|\.host|asian\w*\.\w+|\w*teen\.\w+/i,
// too many "-"
/-{5,}/,
// single, somewhat strange word
/^(Hii|Ye|Bruhh|Aawww)$/,
// common phrase
/SPECIAL FOR YOU|small channel trying to grow| YouT\*ber|MY CONTENT|My video|pedophile😱|MY WORLD RECORD|(^Yes.{0,5}$)|said this to a fan|[Mm]y mom.*subscribers|literally begging|MY VIDEOS?|fucking cringe|[Dd][Oo][Nn]'?[Tt] read my name/,
// replies to this bot
/@Don'?t read my/i,
// upside down chars
/[ㄥϛㄣƐᄅƖ⅄Λ∩┴ɹԀ˥ʞſפℲƎƆ∀ʎʍʌʇɹɯʞɾᴉɥƃɟǝɔɐ]/,
// just a single, weird character
/^.$/,
(text) => {
const charSets = [
{
regex: /[\u{fe27}-\u{fe2f}\u{1df5}-\u{1dff}\u{1dc0}-\u{1de6}\u{1ab0}-\u{1abe}\u{0300}-\u{0333}\u{0339}-\u{033f}\u{0346}-\u{034a}\u{034b}-\u{034e}\u{0350}-\u{0357}\u{0358}-\u{035b}]/gu, // weird combining characters
matchPercent: 0.4
},
{
regex: /[ᴀʙᴄᴅᴇғɢʜɪᴊᴋʟᴍɴᴏᴘᴏ̨ʀsᴛᴜᴠᴡxʏᴢ\s]/g,
matchPercent: 0.5
},
{
regex: /[\u{1D538}-\u{1D56B}\u{1D400}-\u{1D433}]/gu, // math letter symbols
matchPercent: 0.3
},
];
for (const check of charSets) {
const { regex, matchPercent } = check,
matches = text.match(regex)?.length ?? 0;
if (matches / text.length > matchPercent && text.length > 10) {
return true;
}
}
}
]
}),
site = getCurrentSite(),
commentMutationListener = new MutationObserver((mutations) => {
for (const mutation of mutations) {
for (const node of mutation.addedNodes) {
const text = getCommentText(node, site);
if (text) {
if (isCommentLikelyBotComment(text, site)) {
node.style.display = "none";
}
}
}
}
});
commentMutationListener.observe(document.body, {
subtree: true,
childList: true
});
/**
* Determines whether a comment is likely spam.
*
* @param {String} text The comment's content
* @param {Object} site The website the comment is from
* @return {Boolean}
*/
function isCommentLikelyBotComment(text, siteChecks) {
for (const check of siteChecks) {
if (typeof check === "function") {
if (check(text)) {
console.log("Filter Check Failed");
console.log(text);
return true;
}
} else {
// assume regex
if (check.test(text)) {
console.log("Regex Check Failed");
console.log(check);
console.log(text);
return true;
}
}
}
return false;
}
function getCommentText(node, site) {
switch (site) {
case SITES.YOUTUBE: {
if (node.nodeName === "YTD-COMMENT-RENDERER") {
return node.querySelector("#content-text").textContent;
}
}
}
return null;
}
function getCurrentSite() {
switch (location.hostname) {
case "www.youtube.com": {
return SITES.YOUTUBE;
}
}
}