coordinator.swift

extension CollectionView {
    
    class Coordinator: NSObject, UICollectionViewDelegate {
        
        // MARK: - Properties
        let parent: CollectionView
        var dataSource: UICollectionViewDiffableDataSource<Section, Item>?
        
        // MARK: - Init
        init(_ parent: CollectionView) {
            self.parent = parent
        }
    
        
        func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
            
            guard let item = dataSource?.itemIdentifier(for: indexPath) else { return }

            print("Item selected: \(item)")
            
        }
    }
}