The Composable ArchitectureのReducerでPublisherをEffectに変換

import Combine
import ComposableArchitecture

@Reducer
public struct RaelizeIMKReducer {

    /// UI state
    @ObservableState
    public struct State: Equatable {
        var hoge: [String] = []
    }

    /// User action
    public enum Action {
        case hoge0(String)
        case hoge1([String]?)
    }

    public func reduce(into state: inout State, action: Action) -> Effect<Action> {
        switch action {
        case .hoge0(let string):
            return .publisher({
                hogePublisher(string)
                    .map({ Action.hoge1($0) })
            })
        case .hoge1(let strings):
            state.hoge = strings
            return .none
        default:
            return .none
        }
    }
}

func hogePublisher(string: String) -> AnyPublisher<[String]?, Never> {
  // 適当な返り値…
}