Split into multiple packages.

Package.swift

@@ -6,9 +6,20 @@ let package = Package(
     name: "BetterSafariView",
     platforms: [.iOS(.v13), .macOS(.v10_15), .watchOS("6.2")],
     products: [
-        .library(name: "BetterSafariView", targets: ["BetterSafariView"])
+        .library(name: "BetterSafariView",
+                 targets: ["BetterSafariView"]),
+        .library(name: "SafariView",
+                 targets: ["SafariView"]),
+        .library(name: "WebAuthenticationSession",
+                 targets: ["WebAuthenticationSession"])
     ],
     targets: [
-        .target(name: "BetterSafariView")
+        .target(name: "BetterSafariView",
+                dependencies: ["SafariView", "WebAuthenticationSession"]),
+        .target(name: "SafariView",
+                dependencies: ["Shared"]),
+        .target(name: "WebAuthenticationSession",
+                dependencies: ["Shared"]),
+        .target(name: "Shared")
     ]
 )

Sources/BetterSafariView/BetterSafariView.swift

@@ -0,0 +1,2 @@
+@_exported import SafariView
+@_exported import WebAuthenticationSession

Sources/BetterSafariView/SafariView/SafariViewPresentationModifier.swift → Sources/SafariView/SafariViewPresentationModifier.swift

@@ -1,6 +1,7 @@
 #if os(iOS)
 
 import SwiftUI
+import Shared
 
 struct SafariViewPresentationModifier: ViewModifier {
 

Sources/BetterSafariView/SafariView/SafariViewPresenter.swift → Sources/SafariView/SafariViewPresenter.swift

@@ -2,6 +2,7 @@
 
 import SwiftUI
 import SafariServices
+@_spi(Private) import Shared
 
 struct SafariViewPresenter<Item: Identifiable>: UIViewRepresentable {
 
@@ -85,7 +86,7 @@ extension SafariViewPresenter {
             // when the `UIViewControllerRepresentable` is detached from the root view controller (e.g. `UIViewController` contained in `UITableViewCell`)
             // while allowing it to be presented even on the modal sheets.
             // Thanks to: Bohdan Hernandez Navia (@boherna)
-            guard let presentingViewController = uiView.viewController else {
+            guard let presentingViewController = uiView._viewController else {
                 self.resetItemBinding()
                 return
             }

Sources/BetterSafariView/Shared/UIView+viewController.swift → Sources/Shared/UIView+viewController.swift

@@ -2,16 +2,17 @@
 
 import UIKit
 
+@_spi(Private)
 extension UIView {
 
     /// The receiver’s view controller, or `nil` if it has none.
     ///
     /// This property is `nil` if the view has not yet been added to a view controller.
-    var viewController: UIViewController? {
+    public var _viewController: UIViewController? {
         if let nextResponder = self.next as? UIViewController {
             return nextResponder
         } else if let nextResponder = self.next as? UIView {
-            return nextResponder.viewController
+            return nextResponder._viewController
         } else {
             return nil
         }

Sources/BetterSafariView/WebAuthenticationSession/WebAuthenticationPresentationModifier.swift → Sources/WebAuthenticationSession/WebAuthenticationPresentationModifier.swift

@@ -1,6 +1,7 @@
 #if os(iOS) || os(macOS) || os(watchOS)
 
 import SwiftUI
+import Shared
 
 struct WebAuthenticationPresentationModifier: ViewModifier {
 

Sources/BetterSafariView/WebAuthenticationSession/WebAuthenticationPresenter.swift → Sources/WebAuthenticationSession/WebAuthenticationPresenter.swift

@@ -2,6 +2,8 @@
 
 import SwiftUI
 import AuthenticationServices
+@_spi(Private) import Shared
+
 #if os(iOS)
 import SafariServices
 #endif
@@ -199,7 +201,7 @@ extension WebAuthenticationPresenter {
 
         @available(iOS, introduced: 13.0, deprecated: 14.0)
         func setInteractiveDismissalDelegateIfPossible() {
-            guard let safariViewController = view.viewController?.presentedViewController as? SFSafariViewController else {
+            guard let safariViewController = view._viewController?.presentedViewController as? SFSafariViewController else {
                 return
             }
             safariViewController.presentationController?.delegate = interactiveDismissalDelegate