Multi-Bridge Support - You can bridge multiple channels with multiple IRC rooms all with one config.
Reactions Bridging - When a user reacts to a Discord message, the bridge sends a notification to IRC :D
Attachments Bridging - Automatically forwards links to images and attachments from Discord messages to IRC
TLS/Non-TLS IRC Support - Works with both secure (TLS) and standard IRC ports.
Group chat bridges - Since this all works with a selfbot it means that you can bridge a Discord group chat to a IRC room.
YAML Configuration - Simple and a human readable config.

What you need to run this:

Node.js v18+
npm package manager

Dependecies:
    "discord.js-selfbot-v13": "^2.10.0",
    "irc-framework": "^3.0.0",
    "yaml": "^2.3.1"

Before running:

What you gonna need:

A Discord user or bot token.
An IRC room.
Discord group/channel ID
A server or machine to run the bot on.

Installation

Bare metal

Clone the repository:

git clone https://foundry.fsky.io/purplebored/Discord-userbot-to-irc.git
cd Discord-userbot-to-irc

Install dependencies:

npm install

Configuration:

Rename the example.config.yaml file to config.yaml and set it up to your liking.

Start the bridge:

To start the bridge, just run

node bot.js

With Docker/Podman

Configuration:

Copy the example.config.yaml file, rename it to config.yaml, and set it up to your liking.

Start the bridge

To start the bridge, run:

docker run -v "$(pwd)/config.yaml:/app/config.yaml:ro" foundry.fsky.io/purplebored/discord-userbot-to-irc:latest

The /app/config.yaml file in the container must be mounted to the filesystem.

Config:

You can easaily enable or disable the logging of messeges or the raw IRC info for debuging by switching debug: false to debug: true, and the same with logForward

Notes:

Make sure your Discord selfbot token is kept private.
For secure IRC connections, ensure tls: true and correct port

Warning:

I would not reccomend using this in a active room since that might get the bot/userbot rate limited on Discord OR IRC which is not good !

Also Using Userbots is against Discord's Terms of Service so your account/bot might get deactived. This has not happen yet but it is still possible.