StateProvider

public protocol StateProvider

StateProvider defines a protocol for entities able to offer state publishers (Combine Publisher, RxSwift Observable, ReactiveSwift SignalProducer) of certain StateType, so everybody can observe the global state changes through this container. Usually a Store will implement that, but it can also be a StoreProjection with a state that is derived from the global source-of-truth.

The only protocol requirement is to offer a property statePublisher that will allow other entities to subscribe to state changes and react to those.

  • This can be a global state, or a view state that is a not a source-of-truth but only a struct calculated and derived from a global source-of-truth, without storage to avoid state inconsistency.

    Declaration

    Swift

    associatedtype StateType

  • The state publisher that can be observed by counterparts

    Declaration

    Swift

    var statePublisher: UnfailablePublisherType<StateType> { get }
  • eraseToAnyStateProvider() Extension method

    Undocumented

    Declaration

    Swift

    public func eraseToAnyStateProvider() -> AnyStateProvider<StateType>
  • map(_:) Extension method

    Undocumented

    Declaration

    Swift

    public func map<NewStateType>(_ transform: @escaping (StateType) -> NewStateType) -> AnyStateProvider<NewStateType>