SwiftUI MVVM architecture - ViewModel protocol

WordsetCategoriesViewModel.swift

public protocol WordsetCategoriesViewModelInput {
  
   func syncWordsetCategories()
}

public protocol WordsetCategoriesViewModelOutput: ObservableObject {
  
   var error: Error? { get set } 
   var isLoading: Bool { get set } 
}

public protocol WordsetCategoriesViewModelProtocol: WordsetCategoriesViewModelOutput, WordsetCategoriesViewModelInput { }