SwiftUI MVVM architecture - ViewModel simplified

WordsetCategoriesViewModel+Simplifies.swift

@Published var categories: [WorsetCategory] = []
@Published var error: Error?
@Published var isLoading: Bool = false

func fetchWordsetCategories() {
        guard !isLoading else { return }
        
        repo.fetchWordsetCategories()
            .sink(receiveCompletion: { completion in
                switch completion {
                case .failure(let error):
                    self?.error = error
                case .finished:
                   break
                }
                self?.isLoading = false  
            }) { [weak self] categories in
                self?.categories = categories
            }
            .store(in: &disposables)
}