ErrorPresentation.swift

import SwiftUI

struct IdentifiableError: Identifiable {

    let error: Error

    var id: String {
        let nsError = error as NSError
        return "\(nsError.domain) \(nsError.code)"
    }
}

extension View {
    func showError(_ error: Binding<Error?>) -> some View {
        let newBinding = Binding(
            get: { error.wrappedValue.map({ IdentifiableError(error: $0) }) },
            set: { newValue in error.wrappedValue = newValue?.error }
        )
        return self.alert(item: newBinding, content: { error in
            Alert(
                title: Text("An error occurred"),
                message: Text(error.error.localizedDescription),
                dismissButton: .cancel(Text("OK"))
            )
        })
    }
}