Add swift 6 support

Examples/DemosApp/DemosApp.xcodeproj/project.pbxproj

@@ -272,7 +272,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = io.componentskit.examples.DemosApp;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 6.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -300,7 +300,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = io.componentskit.examples.DemosApp;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 6.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Release;

Examples/DemosApp/DemosApp/ComponentsPreview/Helpers/ModalPreview+Helpers.swift

@@ -126,6 +126,7 @@ Enim habitant laoreet inceptos scelerisque senectus, tellus molestie ut. Eros ri
 
   // MARK: - UIKit
 
+  @MainActor
   static func ukHeader(hasHeader: Bool) -> UKModalController.Content? {
     guard hasHeader else {
       return nil
@@ -139,6 +140,7 @@ Enim habitant laoreet inceptos scelerisque senectus, tellus molestie ut. Eros ri
     }
   }
 
+  @MainActor
   static func ukBody(body: ContentBody) -> UKModalController.Content {
     return { _ in
       let subtitle = UILabel()
@@ -154,36 +156,39 @@ Enim habitant laoreet inceptos scelerisque senectus, tellus molestie ut. Eros ri
     }
   }
 
+  @MainActor
   static func ukFooter(footer: ContentFooter?) -> UKModalController.Content? {
-    return footer.map { footer in
-      return { dismiss in
-        let stackView = UIStackView()
-        stackView.axis = .vertical
-        stackView.spacing = 16
-
-        let button = UKButton(
-          model: self.footerButtonVM,
-          action: { dismiss(true) }
-        )
-        stackView.addArrangedSubview(button)
-
-        switch footer {
-        case .button:
-          button.model.isEnabled = true
-        case .buttonAndCheckbox:
-          button.model.isEnabled = false
-          let checkbox = UKCheckbox(
-            initialValue: false,
-            model: self.footerCheckboxVM,
-            onValueChange: { isSelected in
-              button.model.isEnabled = isSelected
-            }
-          )
-          stackView.insertArrangedSubview(checkbox, at: 0)
-        }
+    guard let footer else {
+      return nil
+    }
+
+    return { dismiss in
+      let stackView = UIStackView()
+      stackView.axis = .vertical
+      stackView.spacing = 16
 
-        return stackView
+      let button = UKButton(
+        model: self.footerButtonVM,
+        action: { dismiss(true) }
+      )
+      stackView.addArrangedSubview(button)
+
+      switch footer {
+      case .button:
+        button.model.isEnabled = true
+      case .buttonAndCheckbox:
+        button.model.isEnabled = false
+        let checkbox = UKCheckbox(
+          initialValue: false,
+          model: self.footerCheckboxVM,
+          onValueChange: { isSelected in
+            button.model.isEnabled = isSelected
+          }
+        )
+        stackView.insertArrangedSubview(checkbox, at: 0)
       }
+
+      return stackView
     }
   }
 
@@ -220,6 +225,7 @@ Enim habitant laoreet inceptos scelerisque senectus, tellus molestie ut. Eros ri
     }
   }
 
+  @MainActor
   static func suFooter(
     isPresented: Binding<Bool>,
     isCheckboxSelected: Binding<Bool>,

Examples/DemosApp/DemosApp/ComponentsPreview/Helpers/UKComponentPreview.swift

@@ -38,6 +38,7 @@ struct UKComponentPreview<View, Model>: UIViewRepresentable where View: UKCompon
   let model: Model
   let view: View
 
+  @MainActor
   init(view: View) {
     self.view = view
     self.model = view.model
@@ -53,6 +54,7 @@ struct UKComponentPreview<View, Model>: UIViewRepresentable where View: UKCompon
 }
 
 extension UKComponent {
+  @MainActor
   var preview: some View {
     UKComponentPreview(view: self)
   }

Sources/ComponentsKit/Components/Alert/Helpers/AlertButtonsOrientationCalculator.swift

@@ -1,14 +1,12 @@
 import UIKit
 
+@MainActor
 struct AlertButtonsOrientationCalculator {
   enum Orientation {
     case vertical
     case horizontal
   }
 
-  private static let primaryButton = UKButton(model: .init())
-  private static let secondaryButton = UKButton(model: .init())
-
   private init() {}
 
   static func preferredOrientation(model: AlertVM) -> Orientation {
@@ -17,15 +15,15 @@ struct AlertButtonsOrientationCalculator {
       return .vertical
     }
 
-    self.primaryButton.model = primaryButtonVM.updating {
+    let primaryButton = UKButton(model: primaryButtonVM.updating {
       $0.isFullWidth = false
-    }
-    self.secondaryButton.model = secondaryButtonVM.updating {
+    })
+    let secondaryButton = UKButton(model: secondaryButtonVM.updating {
       $0.isFullWidth = false
-    }
+    })
 
-    let primaryButtonWidth = self.primaryButton.intrinsicContentSize.width
-    let secondaryButtonWidth = self.secondaryButton.intrinsicContentSize.width
+    let primaryButtonWidth = primaryButton.intrinsicContentSize.width
+    let secondaryButtonWidth = secondaryButton.intrinsicContentSize.width
 
     // Since the `maxWidth` of the alert is always less than the width of the
     // screen, we can assume that the width of the container is equal to this

Sources/ComponentsKit/Components/Alert/UKAlertController.swift

@@ -158,6 +158,7 @@ open class UKAlertController: UKCenterModalController {
 // MARK: - Style Helpers
 
 extension UKAlertController {
+  @MainActor
   fileprivate enum Style {
     static func titleLabel(_ label: UILabel, text: String?) {
       label.text = text

Sources/ComponentsKit/Components/Avatar/Helpers/AvatarImageManager.swift

@@ -1,11 +1,12 @@
 import SwiftUI
 import UIKit
 
+@MainActor
 final class AvatarImageManager: ObservableObject {
   @Published var avatarImage: UIImage
 
   private var model: AvatarVM
-  private static var remoteImagesCache = NSCache<NSString, UIImage>()
+  private static let remoteImagesCache = NSCache<NSString, UIImage>()
 
   init(model: AvatarVM) {
     self.model = model
@@ -41,7 +42,7 @@ final class AvatarImageManager: ObservableObject {
   }
 
   private func downloadImage(url: URL) {
-    Task { @MainActor in
+    Task {
       let request = URLRequest(url: url)
       guard let (data, _) = try? await URLSession.shared.data(for: request),
             let image = UIImage(data: data)

Sources/ComponentsKit/Components/Avatar/Models/AvatarImageSource.swift

@@ -2,7 +2,7 @@ import Foundation
 
 /// Defines the source options for an avatar image.
 extension AvatarVM {
-  public enum ImageSource: Hashable {
+  public enum ImageSource: Hashable, Sendable {
     /// An image loaded from a remote URL.
     ///
     /// - Parameter url: The URL pointing to the remote image resource.

Sources/ComponentsKit/Components/Avatar/Models/AvatarPlaceholder.swift

@@ -4,7 +4,7 @@ import Foundation
 ///
 /// It is used to provide a fallback or alternative visual representation when an image is not provided or fails to load.
 extension AvatarVM {
-  public enum Placeholder: Hashable {
+  public enum Placeholder: Hashable, Sendable {
     /// A placeholder that displays a text string.
     ///
     /// This option is typically used to show initials, names, or other textual representations.

Sources/ComponentsKit/Components/Avatar/UIKit/UKAvatar.swift

@@ -1,4 +1,4 @@
-import Combine
+@preconcurrency import Combine
 import UIKit
 
 /// A UIKit component that displays a profile picture, initials or fallback icon for a user.

Sources/ComponentsKit/Components/AvatarGroup/UIKit/AvatarContainer.swift

@@ -81,6 +81,7 @@ final class AvatarContainer: UIView {
 // MARK: - Style Helpers
 
 extension AvatarContainer {
+  @MainActor
   fileprivate enum Style {
     static func mainView(_ view: UIView, model: AvatarGroupVM) {
       view.backgroundColor = model.borderColor.uiColor

Sources/ComponentsKit/Components/AvatarGroup/UIKit/UKAvatarGroup.swift

@@ -111,6 +111,7 @@ open class UKAvatarGroup: UIView, UKComponent {
 // MARK: - Style Helpers
 
 extension UKAvatarGroup {
+  @MainActor
   fileprivate enum Style {
     static func stackView(_ view: UIStackView, model: Model) {
       view.axis = .horizontal

Sources/ComponentsKit/Components/Badge/Models/BadgeStyle.swift

@@ -2,7 +2,7 @@ import Foundation
 
 extension BadgeVM {
   /// Defines the available visual styles for a badge.
-  public enum Style: Equatable {
+  public enum Style: Equatable, Sendable {
     case filled
     case light
   }

Sources/ComponentsKit/Components/Badge/UKBadge.swift

@@ -112,6 +112,7 @@ open class UKBadge: UIView, UKComponent {
 // MARK: - Style Helpers
 
 extension UKBadge {
+  @MainActor
   fileprivate enum Style {
     static func mainView(_ view: UIView, model: BadgeVM) {
       view.backgroundColor = model.backgroundColor.uiColor

Sources/ComponentsKit/Components/Button/Models/ButtonImageLocation.swift

@@ -2,7 +2,7 @@ import Foundation
 
 /// Specifies the position of the image relative to the button's title.
 extension ButtonVM {
-  public enum ImageLocation {
+  public enum ImageLocation: Sendable {
     /// The image is displayed before the title.
     case leading
     /// The image is displayed after the title.

Sources/ComponentsKit/Components/Button/UKButton.swift

@@ -236,6 +236,7 @@ open class UKButton: FullWidthComponent, UKComponent {
 // MARK: - Style Helpers
 
 extension UKButton {
+  @MainActor
   fileprivate enum Style {
     static func mainView(_ view: UIView, model: Model) {
       view.backgroundColor = nil

Sources/ComponentsKit/Components/Card/UKCard.swift

@@ -206,6 +206,7 @@ open class UKCard<Content: UIView>: UIView, UKComponent {
 }
 
 extension UKCard {
+  @MainActor
   fileprivate enum Style {
     static func mainView(_ view: UIView, model: Model) {
       view.layer.cornerRadius = model.cornerRadius.value

Sources/ComponentsKit/Components/Checkbox/UKCheckbox.swift

@@ -254,6 +254,7 @@ open class UKCheckbox: UIView, UKComponent {
 // MARK: - Style Helpers
 
 extension UKCheckbox {
+  @MainActor
   fileprivate enum Style {
     static func stackView(_ stackView: UIStackView, model: Model) {
       stackView.axis = .horizontal

Sources/ComponentsKit/Components/CircularProgress/Models/CircularProgressShape.swift

@@ -2,7 +2,7 @@ import Foundation
 
 extension CircularProgressVM {
   /// Defines the shapes for the circular progress component.
-  public enum Shape {
+  public enum Shape: Sendable {
     /// Renders a complete circle to represent the progress.
     case circle
     /// Renders only a portion of the circle (an arc) to represent progress.

Sources/ComponentsKit/Components/CircularProgress/UKCircularProgress.swift

@@ -171,6 +171,7 @@ open class UKCircularProgress: UIView, UKComponent {
 // MARK: - Style Helpers
 
 extension UKCircularProgress {
+  @MainActor
   fileprivate enum Style {
     static func backgroundLayer(
       _ layer: CAShapeLayer,

Sources/ComponentsKit/Components/Countdown/Helpers/CountdownWidthCalculator.swift

@@ -1,18 +1,18 @@
 import UIKit
 
+@MainActor
 struct CountdownWidthCalculator {
-  private static let label = UILabel()
-
   private init() {}
 
   static func preferredWidth(
     for attributedText: NSAttributedString,
     model: CountdownVM
   ) -> CGFloat {
-    self.style(self.label, with: model)
-    self.label.attributedText = attributedText
+    let label = UILabel()
+    self.style(label, with: model)
+    label.attributedText = attributedText
 
-    let estimatedSize = self.label.sizeThatFits(UIView.layoutFittingExpandedSize)
+    let estimatedSize = label.sizeThatFits(UIView.layoutFittingExpandedSize)
 
     return estimatedSize.width + 2
   }

Sources/ComponentsKit/Components/Countdown/Localization/UnitsLocalization.swift

@@ -3,9 +3,9 @@ import Foundation
 // MARK: - UnitsLocalization
 
 /// A structure that provides localized representations of time units (seconds, minutes, hours, days).
-public struct UnitsLocalization: Equatable {
+public struct UnitsLocalization: Equatable, Sendable {
   /// A structure that represents the localized short and long forms of a single time unit.
-  public struct UnitItemLocalization: Equatable {
+  public struct UnitItemLocalization: Equatable, Sendable {
     /// The short-form representation of the time unit (e.g., "s" for seconds).
     public let short: String
     /// The long-form representation of the time unit (e.g., "Seconds").

Sources/ComponentsKit/Components/Countdown/Manager/CountdownManager.swift

@@ -1,6 +1,6 @@
 import SwiftUI
 
-class CountdownManager: ObservableObject {
+class CountdownManager: ObservableObject, @unchecked Sendable {
   // MARK: - Published Properties
 
   @Published var days: Int = 0
@@ -13,6 +13,10 @@ class CountdownManager: ObservableObject {
   private var timer: Timer?
   private var until: Date?
 
+  deinit {
+    self.stop()
+  }
+
   // MARK: - Methods
 
   func start(until: Date) {

Sources/ComponentsKit/Components/Countdown/Models/CountdownStyle.swift

@@ -2,13 +2,13 @@ import Foundation
 
 extension CountdownVM {
   /// Defines the visual styles for the countdown component.
-  public enum Style: Equatable {
+  public enum Style: Equatable, Sendable {
     case plain
     case light
   }
 
   /// Defines the units style for the countdown component.
-  public enum UnitsStyle: Equatable {
+  public enum UnitsStyle: Equatable, Sendable {
     case hidden
     case bottom
     case trailing

Sources/ComponentsKit/Components/Countdown/Models/CountdownVM.swift

@@ -212,6 +212,7 @@ extension CountdownVM {
     || self.locale != oldModel.locale
   }
 
+  @MainActor
   func timeWidth(manager: CountdownManager) -> CGFloat {
     let values: [(Int, CountdownHelpers.Unit)] = [
       (manager.days, .days),