mvvm_lite 0.2.0

A tiny, zero-dependency MVVM toolkit for Flutter — ViewModel base class with lifecycle tracking, scoped provider, granular Selector, and Consumer.

0.2.0

• Behavior change: ViewModelProvider now creates its view model in initState instead of lazily on first build. This fixes a latent bug where a throwing create (or a throw during the first build) re-ran create a second time during dispose, masking the original error. The view model is now created exactly once.
• Behavior change: context.readVm<VM>(), Consumer, and Selector now throw a descriptive FlutterError when no matching ViewModelProvider is in scope — in both debug and release builds. Previously this was a debug-only assert, so release builds surfaced an opaque null-check error instead.
• Documented that Consumer/Selector resolve the view model by state type (nearest provider wins), whereas readVm resolves by view-model type — use a dedicated state class per provider.
• Tooling: bumped the lints dev-dependency to ^6.1.0 and enabled the directives_ordering and always_declare_return_types lints. No change to the supported SDK floor (Dart >=3.0.0, Flutter >=3.10.0).

0.1.0

Initial release.

• ViewModel<S> — ChangeNotifier-based base class with immutable state, mounted lifecycle flag, and a bindStream helper for "subscribe once, listen forever" patterns.
• ViewModelProvider<VM, S> — widget that creates, scopes, and disposes a view model for a subtree. Supports either child or builder.
• Consumer<S> — rebuilds on every state change.
• Selector<S, T> — rebuilds only when a derived projection changes; supports a custom shouldRebuild for value-equality-less types.
• BuildContext.readVm<VM>() — retrieves the view model without subscribing.