DependencyProvider<AppState, AppAction, AppEnvironment> class

A type-based service locator for dependency injection.

Register dependencies by type and resolve them later. Optionally configure an environmentBuilder and storeBuilder to wire up the full application graph.

final provider = DependencyProvider()
  ..register<ApiClient>(ApiClient())
  ..register<Database>(Database());

final api = provider.resolve<ApiClient>();

Constructors

DependencyProvider({Map<Type, dynamic> dependencies = const {}, AppEnvironment environmentBuilder(DependencyProvider<AppState, AppAction, AppEnvironment> provider)?, Store<AppState, AppAction> storeBuilder(AppEnvironment env)?})
Creates a dependency provider.

Properties

dependencies → Map<Type, dynamic>
The registered dependency instances, keyed by type.
final
environment → AppEnvironment
The application environment, built from environmentBuilder.
no setter
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
store ↔ Store<AppState, AppAction>
The application store, built from storeBuilder if provided.
latefinal

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
register<T>(T dependency) → void
Registers a dependency instance under type T.
resolve<T>() → T
Resolves a dependency by type T.
resolveOrNull<T>() → T?
Resolves a dependency by type T, returning null if not found.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited