//! Component events.

use std::convert::Infallible;

use crate::Component;

// TODO: Implement
// /// Pair relation for events emitted when:
// /// a) A entity with the target component is spawned.
// /// b) The target component is added to a entity.
// #[derive(Debug, Component)]
// pub struct Added(Infallible);

// TODO: Implement
// /// Pair relation for events emitted when:
// /// a) The target component is removed from a entity.
// /// b) A entity with the target component is despawned.
// #[derive(Debug, Component)]
// pub struct Removed(Infallible);

#[derive(Debug, Component)]
pub struct Changed(Infallible);