Loader for SwiftUI derived data

Loader.swift

class Loader<Output>: ObservableObject {
	@Published var isLoding: Bool = false
	@Published var error: Swift.Error?
	@Published var value: Output?
	
	private var observer: AnyCancellable?
	
	func load<P: Publisher>(_ publisher: P) where P.Output == Output {
		self.observer?.cancel()
		
		self.isLoding = true
		observer = publisher
			.sink { completion in
				switch completion {
				case .failure(let error):
					self.error = error
				case .finished:
					break
				}
				
				self.isLoding = false
			} receiveValue: { output in
				self.value = output
			}
	}
}

struct Content: View {
	var prop: Int
	@StateObject var loader: Loader<String>()
	
	var body: some View {
		Text(loader.value ?? loader.error?.localizedDescription ?? "Loading...")
			.onAppear {
				loader.load(Just("\(prop)"))
			}
			.id(prop)
	}
}