TCA101: Combine Publisher → Effect

[Taehyeon-Kim]

struct SomeClient {
  var fetchNumber: () async -> Int
}

//: Before
extension SomeClient: DependencyKey {
  static let liveValue = Self(fetchNumber: { _ in
    let number = ...
    Just(number).eraseToEffect() 
  })
}

//: After
extension SomeClient: DependencyKey {
  static let liveValue = Self(fetchNumber: { _ in
    Effect.publisher { Just(number) }
  })
}

• Combine Publisher를 Effect로 Wrapping해서 사용하고 싶다면 publisher 메서드를 사용하면 된다.

Links:

• https://pointfreeco.github.io/swift-composable-architecture/1.2.0/documentation/composablearchitecture/effect/publisher(_:)/