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A simple isolated state implementation for ReactorKit
.package(url: "https://github.com/wotjd/IsolatedStateReactor.git", from: "1.0.0")


A simple isolated state implementation for ReactorKit


distinctUntilChanged operator follows state observable and this produces quiet complicated code.

for example,

// in bind(reactor:)
// in reactor.mutate(action:)
// to avoid skipping event by distinctUntilChanged
return Observable.of(true, false).map(Mutation.updateBoolState)


to solve this, I made isolatedState

// usage
  // work properly without distinctUntilChanged()
// implementation
class ViewReactor: IsolatedStateReactor {
  enum Action { ... }
  enum Mutation { ... }
  // State should provide updates stores keyPath array to know which property is updated by mutation
  struct State: UpdateStorable {
    var boolProperty = false
    var updates: [PartialKeyPath<Self>] = [\State.self]

  func mutate(action: Action) -> Observable<Mutation> { ... }
  func reduce(isolatedState: inout IsolatedState, mutation: Mutation) {
    switch mutation {
    case let .updateBoolProperty(bool):
      state.boolProperty = bool


Stars: 3
Last commit: 3 weeks ago

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Release Notes

3 weeks ago
  • implement IsolatedStateReactor
    • checks update of each property on state of Reactor (with simple KeyPath array)
    • allows subscription of separated state property stream without distinctUntilChanged operation
  • supports Swift Package Manager
  • add demo project (import locally)

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