drop Swift 5.10 fallback, inline Sendable conformances

Author: NikSativa

Package@swift-5.10.swift

@@ -15,12 +15,7 @@ public final class Defaults<Value: Codable & Equatable> {
     private let key: String
     private let defaultValue: Value
     private let defaultsObserver: DefaultsObserver
-
-    #if swift(>=6.0)
     private nonisolated(unsafe) var notificationToken: (any NSObjectProtocol)?
-    #else
-    private var notificationToken: (any NSObjectProtocol)?
-    #endif
 
     private let decoderGenerator: () -> JSONDecoder
     private lazy var decoder: JSONDecoder = decoderGenerator()
@@ -119,14 +114,9 @@ public final class Defaults<Value: Codable & Equatable> {
 
     private nonisolated func syncMain() {
         assert(Thread.isMainThread, "Should be used only in main thread")
-
-        #if swift(>=6.0)
         MainActor.assumeIsolated {
             notifyAboutChanges()
         }
-        #else
-        notifyAboutChanges()
-        #endif
     }
 
     private func notifyAboutChanges() {
@@ -222,12 +212,7 @@ public extension Defaults where Value: ExpressibleByBooleanLiteral {
 private final class DefaultsObserver: NSObject {
     private let userDefaults: UserDefaults
     private let key: String
-
-    #if swift(>=6.0)
     var updateHandler: (@Sendable (_ new: Any?) -> Void)?
-    #else
-    var updateHandler: ((_ new: Any?) -> Void)?
-    #endif
 
     required init(key: String,
                   userDefaults: UserDefaults) {
@@ -266,9 +251,6 @@ extension UnsafeSendable {
         self.value = value
     }
 }
-
-#if swift(>=6.0)
 extension Defaults: @unchecked Sendable {}
 extension DefaultsObserver: @unchecked Sendable {}
 extension UnsafeSendable: @unchecked Sendable {}
-#endif

Source/Defaults.swift

@@ -118,7 +118,4 @@ public extension Expirable where Value: ExpressibleByBooleanLiteral {
 
 extension Expirable: Codable where Value: Codable {}
 extension Expirable: Equatable where Value: Equatable {}
-
-#if swift(>=6.0)
 extension Expirable: @unchecked Sendable {}
-#endif

Source/Expirable.swift

@@ -203,8 +203,5 @@ public extension Keychain {
         }
     }
 }
-
-#if swift(>=6.0)
 extension Keychain: Sendable {}
 extension KeychainError: Sendable {}
-#endif

Source/Keychain.swift

@@ -123,7 +123,4 @@ extension Lifetime: Codable {
         try container.encode(interval)
     }
 }
-
-#if swift(>=6.0)
 extension Lifetime: Sendable {}
-#endif

Source/Lifetime.swift

@@ -1,7 +1,5 @@
 import Combine
 import Foundation
-
-#if swift(>=6.0)
 /// A protocol that defines a reactive storage interface for reading and writing values.
 ///
 /// `Storage` abstracts the concept of value persistence with support for Combine-based observation.
@@ -28,27 +26,6 @@ public protocol Storage<Value>: AnyObject, Sendable, ObservableObject {
     /// - Returns: An `AnyCancellable` that can be used to cancel the subscription.
     func sink(receiveValue: @escaping @Sendable (Value) -> Void) -> AnyCancellable
 }
-#else
-/// A protocol that defines the interface for storing and retrieving values.
-/// Storage implementations provide a way to persist and observe changes to values.
-///
-/// The protocol combines Combine's `ObservableObject` with a value storage mechanism,
-/// allowing for reactive updates when values change.
-public protocol Storage<Value>: AnyObject, ObservableObject {
-    associatedtype Value
-
-    /// A publisher that emits the current value and any subsequent changes.
-    var eventier: AnyPublisher<Value, Never> { get }
-
-    /// The current value stored in the storage.
-    var value: Value { get set }
-
-    /// Subscribes to value changes and returns a cancellable subscription.
-    /// - Parameter receiveValue: A closure that is called with the new value whenever it changes.
-    /// - Returns: A cancellable subscription that can be used to stop receiving updates.
-    func sink(receiveValue: @escaping (Value) -> Void) -> AnyCancellable
-}
-#endif
 
 /// Convenience helpers for combining and subscribing to storages.
 public extension Storage {

Source/Storage.swift

@@ -161,7 +161,4 @@ extension StorageComposition where Value: ExpressibleByBooleanLiteral {
         try self.init(storages: storages, defaultValue: false)
     }
 }
-
-#if swift(>=6.0)
 extension StorageComposition: @unchecked Sendable {}
-#endif

Source/StorageComposition.swift

@@ -63,7 +63,4 @@ public extension Storage {
         return AnyStorage(self)
     }
 }
-
-#if swift(>=6.0)
 extension AnyStorage: @unchecked Sendable {}
-#endif

Source/Storages/AnyStorage.swift

@@ -183,7 +183,4 @@ public extension FileStorage where Value: ExpressibleByBooleanLiteral {
                   defaultValue: false)
     }
 }
-
-#if swift(>=6.0)
 extension FileStorage: @unchecked Sendable {}
-#endif

Source/Storages/FileStorage.swift

@@ -63,7 +63,4 @@ public extension InMemoryStorage where Value: ExpressibleByBooleanLiteral {
         self.init(value: false)
     }
 }
-
-#if swift(>=6.0)
 extension InMemoryStorage: @unchecked Sendable {}
-#endif