AsyncView

AsyncResult.swift

enum AsyncResult<Data> {
    case loading
    case success(Data)
    case failure(Error)
}

AsyncView.swift

struct AsyncView<Data, Content>: View where Content: View {
    private let operation: (() async throws -> Data)
    private let transition: AnyTransition
    @ViewBuilder
    private let content: (AsyncResult<Data>) -> Content
    @State private var loadState: AsyncResult<Data> = .loading

    init(_ operation: @escaping () async throws -> Data, transition: AnyTransition = .identity, @ViewBuilder content: @escaping (AsyncResult<Data>) -> Content) {
        self.operation = operation
        self.transition = transition
        self.content = content
    }

    var body: some View {
        VStack {
            content(loadState)
        }
        .task {
            do {
                loadState = .success(try await operation())
            } catch {
                loadState = .failure(error)
            }
        }
        .transition(transition)
    }
}