ircstates

TypeScript port of the python library ircstates. The major and minor version of this library will aim to follow upstream, patch will be increased independently.

rationale

I wanted a bare-bones reference implementation of taking byte input, parsing it into tokens and then managing an IRC client session state from it.

with this library, you can have client session state managed for you and put additional arbitrary functionality on top of it.

usage

installation

$ npm install ircstates

simple

import { Server } from 'ircstates'

const server = new Server("liberachat")
const lines = []
const e = new TextEncoder()

lines.push(server.recv(e.encode(':server 001 nick :hello world!\r\n')))
lines.push(server.recv(e.encode(':nick JOIN #chan\r\n')))

for (const line of lines) {
    server.parseTokens(line)
}

const chan = server.channels.get('#chan')

socket to state

iimport { Socket } from 'net'
import { Server } from '../src'
import { Line, StatefulEncoder } from 'irctokens'

const NICK = 'nickname'
const CHAN = '#chan'
const HOST = '127.0.0.1'
const PORT = 6667

const server = new Server('liberachat')
const e = new StatefulEncoder()
const s = new Socket()
s.connect(PORT, HOST)

function send (line: Line) {
  console.log(`> ${line.format()}`)
  e.push(line)
  const pending = e.pending()
  s.write(pending)
  e.pop(pending.length)
}

s.once('connect', () => {
  send(new Line({ command: 'USER', params: ['username', '0', '*', 'real name'] }))
  send(new Line({ command: 'NICK', params: [NICK] }))
})

s.on('data', data => {
  const recvLines = server.recv(Uint8Array.from(data))

  for (const line of recvLines) {
    server.parseTokens(line)
    console.log(`< ${line.format()}`)
  }
})

server.on('PING', (line: Line) => send(new Line({ command: 'PONG', params: [line.params[0]] })))

get a user's channels

console.log(server.users)
// Map(1) { 'nickname' => User }
const user = server.getUser(NICK) as User
console.log(user)
// User { channels: Set(1) { '#chan' }, username: '~username', hostname: '127.0.0.1' }
console.log(user.channels)
// Set(1) { '#chan' }

get a channel's users

console.log(server.channels)
// Map(1) { '#chan' => Channel }
const channel = server.getChannel('#chan')
console.log(channel)
// Channel { ... }
console.log(channel?.users)
// Map(1) { 'nickname' => ChannelUser { modes: Set(0) {} } }

get a user's modes in channel

const channel = server.getChannel(CHAN)
const channelUser = channel.users.get(NICK)
console.log(channelUser)
// ChannelUser { modes: Set(0) { 'o', 'v' } }

contact

Come say hi at #irctokens on irc.libera.chat