From 6fae0850e898d64fe068b231089f8fc21e17ae99 Mon Sep 17 00:00:00 2001
From: Rustem Mussabekov <winlinx@ya.ru>
Date: Tue, 26 Oct 2021 11:49:15 +0300
Subject: [PATCH] Fixes Unexpectedly Found Nil When Unwrapping Optional in
 WebAuthenticationPresenter

This pull request fixes the unexpectedly found nil when unwrapping optional by using ASPresentationAnchor() for iOS 13+ and MacOS 10.15+, otherwise defaults to original behavior.
---
 .../WebAuthenticationSession/WebAuthenticationPresenter.swift   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Sources/BetterSafariView/WebAuthenticationSession/WebAuthenticationPresenter.swift b/Sources/BetterSafariView/WebAuthenticationSession/WebAuthenticationPresenter.swift
index ec664c6..bbe7552 100644
--- a/Sources/BetterSafariView/WebAuthenticationSession/WebAuthenticationPresenter.swift
+++ b/Sources/BetterSafariView/WebAuthenticationSession/WebAuthenticationPresenter.swift
@@ -179,7 +179,7 @@ extension WebAuthenticationPresenter {
             // MARK: ASWebAuthenticationPresentationContextProviding
             
             func presentationAnchor(for session: ASWebAuthenticationSession) -> ASPresentationAnchor {
-                return coordinator.view.window!
+                return coordinator.view.window ?? ASPresentationAnchor()
             }
         }