Ably vs PartyKit

import * as Ably from 'ably';

const client = new Ably.Realtime(process.env.ABLY_API_KEY!);

// Subscribe to a channel
const channel = client.channels.get('my-channel');
await channel.subscribe('greeting', (message) => {
  console.log('Received:', message.data);
});

// Publish a message
await channel.publish('greeting', { text: 'Hello from Ably!' });

// Clean up
client.close();

// server.ts (PartyKit server)
import type * as Party from 'partykit/server';

export default class MyServer implements Party.Server {
  constructor(readonly room: Party.Room) {}

  onMessage(message: string, sender: Party.Connection) {
    this.room.broadcast(message, [sender.id]);
  }
}