Make View protocols MainActor-isolated

Author: caiozullo

EssentialApp/EssentialAppTests/Helpers/SharedTestHelpers.swift

@@ -25,6 +25,7 @@ private class DummyView: ResourceView {
 	func display(_ viewModel: Any) {}
 }
 
+@MainActor
 var loadError: String {
 	LoadResourcePresenter<Any, DummyView>.loadError
 }

EssentialFeed/EssentialFeed/Shared Presentation/LoadResourcePresenter.swift

@@ -4,12 +4,14 @@
 
 import Foundation
 
+@MainActor
 public protocol ResourceView {
 	associatedtype ResourceViewModel
 
 	func display(_ viewModel: ResourceViewModel)
 }
 
+@MainActor
 public final class LoadResourcePresenter<Resource, View: ResourceView> {
 	public typealias Mapper = (Resource) throws -> View.ResourceViewModel
 

EssentialFeed/EssentialFeed/Shared Presentation/ResourceErrorView.swift

@@ -4,6 +4,7 @@
 
 import Foundation
 
+@MainActor
 public protocol ResourceErrorView {
 	func display(_ viewModel: ResourceErrorViewModel)
 }

EssentialFeed/EssentialFeed/Shared Presentation/ResourceLoadingView.swift

@@ -4,6 +4,7 @@
 
 import Foundation
 
+@MainActor
 public protocol ResourceLoadingView {
 	func display(_ viewModel: ResourceLoadingViewModel)
 }