the-guard-anti-arabic-plugin

anti-arabic.js

'use strict';

const C = require('telegraf/composer');

// Utils
const o = (f, g) => x => f(g(x));
const both = (a, b) =>
	(...args) =>
		a(...args) && b(...args);

// Telegraf utils
const text = ctx => (
	(ctx.message && (ctx.message.entities ||
		ctx.message.caption_entities)) ||
	[]
).reduce(
	(acc, entity) =>
		entity.type === 'url'
			? acc.slice(0, entity.offset) +
			acc.slice(entity.offset + entity.length)
			: acc,
	(ctx.message && ctx.message.text) ||
	(ctx.message && ctx.message.caption) ||
	'');

const isNonAdmin = ctx =>
	!ctx.state.isMaster && ctx.from.status !== 'admin';

// Text utils
const isSandland = c =>
	c >= '\u0600' && c <= '\u06FF';

const sandlandAmount = s =>
	s.split('').filter(isSandland).length / s.length;

const banAmount = len =>
	(amount => amount <= 0 ? 1 : amount)
		(4 / (len - 2) + 0.2);

// Main hook
const shouldBan = text =>
	sandlandAmount(text) >= banAmount(text.length);

// Woop woop
module.exports = C.optional(
	both(
		o(shouldBan, text),
		isNonAdmin),
	ctx =>
		Promise.all([
			ctx.deleteMessage(),
			ctx.ban({
				admin: ctx.botInfo,
				reason: 'Persian/Arabic text',
				userToBan: ctx.from
			})
		]));

This plugin seems to be outdated. the error i'm getting seems to be:

Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './composer' is not defined by "exports" in /root/the-guard-bot/node_modules/telegraf/package.json
at new NodeError (node:internal/errors:387:5)
at throwExportsNotFound (node:internal/modules/esm/resolve:439:9)
at packageExportsResolve (node:internal/modules/esm/resolve:718:3)
at resolveExports (node:internal/modules/cjs/loader:493:36)
at Function.Module._findPath (node:internal/modules/cjs/loader:533:31)
at Function.Module._resolveFilename (node:internal/modules/cjs/loader:942:27)
at Function.Module._resolveFilename.sharedData.moduleResolveFilenameHook.installedValue [as _resolveFilename] (/root/the-guard-bot/node_modules/@cspotcode/source-map-support/source-map-support.js:811:30)
at Function.Module._load (node:internal/modules/cjs/loader:804:27)
at Module.require (node:internal/modules/cjs/loader:1022:19)
at require (node:internal/modules/cjs/helpers:102:18) {
code: 'ERR_PACKAGE_PATH_NOT_EXPORTED'

Fix:

const { Composer } = require("telegraf");

Telegraf no longer allows importing from internal paths that aren't explicitly exported.

"Anti Arabic"? Racism?

Yes

this is not intended as racism. it is used to stop bots, of which we get daily and use arabic characters posting scam links and such. we welcome everyone, but wish to keep bots out. our chat is english-only so everyone (my self being german) must keep to english as well and so its not limiting anyone from joining. only bots from spamming.

this is not intended as racism. it is used to stop bots, of which we get daily and use arabic characters posting scam links and such.

Okay. But what about making an "Anti Hebrew", for example? Why not making anti-Chinese/Japanese letters also?
I don't want to make assumptions, but isn't that weird? i.e. Just the Arabic language is denied?

It just happens that Telegram has a rampant problem with Persian spambots. Modern Persian uses Arabic alphabet, so.