Fix Xcode 12.5 build issue.

Author: DenTelezhkin

CHANGELOG.md

@@ -3,6 +3,12 @@ All notable changes to this project will be documented in this file.
 
 # Next
 
+Note: This is backwards-compatibility release, it only fixes build issue with Xcode 12.5. For future development please consider migrating to DTCollectionViewManager 8.
+
+### Fixed
+
+* Build issues with Xcode 12.5
+
 ## [7.1.0](https://github.com/DenTelezhkin/DTCollectionViewManager/releases/tag/7.1.0)
 
 ### Changed

Sources/DTCollectionViewManager/DTCollectionViewDataSource.swift

@@ -26,7 +26,7 @@
 import UIKit
 import DTModelStorage
 
-//swiftlint:disable:next type_name
+// swiftlint:disable:next type_name
 private class DummyCollectionViewCellThatPreventsAppFromCrashing: UICollectionViewCell {}
 
 /// Object, that implements `UICollectionViewDataSource` methods for `DTCollectionViewManager`.
@@ -106,7 +106,7 @@ open class DTCollectionViewDataSource: DTCollectionViewDelegateWrapper, UICollec
                                                                   to: destination)
     }
 
-    @available(tvOS 10.2, *)
+    @available(iOS 14.0, tvOS 10.2, *)
     /// Implementation of `UICollectionViewDataSource` protocol.
     open func indexTitles(for collectionView: UICollectionView) -> [String]? {
         if let reaction = collectionViewReactions.first(where: { $0.methodSignature == EventMethodSignature.indexTitlesForCollectionView.rawValue }) {
@@ -115,7 +115,7 @@ open class DTCollectionViewDataSource: DTCollectionViewDelegateWrapper, UICollec
         return (delegate as? UICollectionViewDataSource)?.indexTitles?(for: collectionView)
     }
 
-    @available(tvOS 10.2, *)
+    @available(iOS 14.0, tvOS 10.2, *)
     /// Implementation of `UICollectionViewDataSource` protocol.
     open func collectionView(_ collectionView: UICollectionView, indexPathForIndexTitle title: String, at index: Int) -> IndexPath {
         if let indexPath = performNonCellReaction(.indexPathForIndexTitleAtIndex, argumentOne: title, argumentTwo: index) as? IndexPath {

Sources/DTCollectionViewManager/DTCollectionViewManager.swift

@@ -94,7 +94,7 @@ open class DTCollectionViewManager {
     ///  Factory for creating cells and reusable views for UICollectionView
     final lazy var viewFactory: CollectionViewFactory = {
         precondition(self.isManagingCollectionView, "Please call manager.startManagingWithDelegate(self) before calling any other DTCollectionViewManager methods")
-        //swiftlint:disable:next force_unwrapping
+        // swiftlint:disable:next force_unwrapping
         let factory = CollectionViewFactory(collectionView: self.collectionView!)
         factory.anomalyHandler = anomalyHandler
         return factory