Design principles behind miniriverpod.

The package intentionally narrows features to keep behavior explicit: provider identity by args, scoped injection, and predictable disposal semantics.

Read Providers Back to Overview

What Changes from Riverpod

Instead of generated family classes and implicit notifier channels, miniriverpod prefers subclass + args + explicit invoke.

Provider identity

runtimeType + args hash

family alternative

Subclass Provider / AsyncProvider and pass super.args((...))

DI fallback

Scope<T>.required + overrideWithValue

Why this matters

You can reason about equality and overrides from plain Dart constructors, which keeps debugging and tests straightforward.

Provider Identity with args

args defines the provider key, so equal args means the same cache entry inside a ProviderContainer.

Identity rule

ProviderKey = runtimeType + hash(args)

Practical consequences

- No dedicated family type is required.
- Per-argument override is done by creating provider instances.
- Keep args stable and immutable for predictable caching.

Example: family-like provider + Scope fallback

Use a constructor argument as identity and inject a fallback instance through Scope.

product_provider.dart

class ProductProvider extends AsyncProvider<List<Product>> {
  ProductProvider({this.search = ''}) : super.args((search,));
  final String search;

  static final fallback = Scope<ProductProvider>.required('product.fallback');

  @override
  FutureOr<List<Product>> build(ref) async {
    final api = ref.watch(productsApiProvider);
    return api.search(q: search);
  }
}

// Inject
ProviderScope(
  overrides: [
    ProductProvider.fallback.overrideWithValue(ProductProvider(search: 'jeans')),
  ],
  child: const App(),
);

Scope keeps dependency wiring explicit and test-friendly.

overrideWithValue works per provider instance, including args-based instances.

autoDispose behavior is unchanged by using subclass + args.

આગલા પગલાં

Providers & Reads

See concrete patterns for watch/read/listen and AsyncProvider.future.

Providers ખોલો

Mutations

Implement state updates with mutation tokens, mutate, and ref.invoke.

Mutations ખોલો