Channel

fn build() -> App {
    App::builder()
        .on_connect(on_connect)
        .background(|app: App| async move {
            let mut chan = app.channel::<String>("hello");
            loop {
                match chan.recv().await {
                    Ok(msg) => println!("got message! `{msg}`"),
                    Err(e) => println!("failed to receive message: {e}"),
                }
            }
        })
        .build()
}

maf::register!(build);

const maf = new MafClient(/* ... */);

const channel = maf.channel<string>("hello");
channel.send("Hello, world!");