df_di 0.16.1

A pragmatic dependency injection (DI) system, coupled with service classes for seamless state management in Dart.

Changelog

0.16.1

• update

0.16.0

• breaking: ServiceMixin.init / pause / resume return Err on invalid lifecycle transitions (init after dispose, second init, pause / resume before init) instead of silently resolving Ok. Idempotent calls (pause-when-paused, resume-when-resumed, dispose-when-disposed) still return Ok(None).
• breaking: ECS events use subtype propagation — readEvents<E> and World.onEvent<E> now match via event is E, so a derived event reaches base-typed readers. Previously buffers and listener maps were keyed by exact runtime type and base-typed readers saw nothing.
• feat: ECS despawn, clearEntities, removeResource, and World.dispose cascade dispose() (fire-and-forget) to component / resource values that mix ServiceMixin, so subscriptions and timers no longer leak past the world's lifetime.
• feat: ECS update is re-entrant safe — a system calling world.update recursively shares the outer tick's event buffer; only the outermost return drains it.
• fix: register<T>, until*, and untilExactlyK return an Err Resolvable instead of throwing when a concurrent unregister wipes the slot between resolution and the post-resolution lookup.
• fix: registerAndInitService now fires the user-supplied onUnregister callback even when the service's dispose() resolves to Err or the registered slot resolved to Err.
• fix: unregisterChild / unregisterChildT propagate child-construction failure as Err in the returned Result instead of throwing.
• fix: DIRegistry.removeWhere now prunes empty groups and fires the change listener — previously it leaked ghost group keys and skipped change notifications.
• fix: children() and resolveAll snapshot the registry so re-entrant register / unregister fired from an onRegister / onUnregister callback no longer throws ConcurrentModificationError.