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//! Listen to external events in your application.
use crate::Hasher;

/// A request to listen to external events.
///
/// Besides performing async actions on demand with [`Command`], most
/// applications also need to listen to external events passively.
///
/// A [`Subscription`] is normally provided to some runtime, like a [`Command`],
/// and it will generate events as long as the user keeps requesting it.
///
/// For instance, you can use a [`Subscription`] to listen to a WebSocket
/// connection, keyboard presses, mouse events, time ticks, etc.
///
/// [`Command`]: crate::Command
pub type Subscription<T> = iced_futures::Subscription<Hasher, (), T>;

pub use iced_futures::subscription::Recipe;