Require macOS 10.13, iOS 12, tvOS 12, watchOS 5

Fixes #81

Package.swift

@@ -1,13 +1,13 @@
-// swift-tools-version:5.4
+// swift-tools-version:5.5
 import PackageDescription
 
 let package = Package(
 	name: "Defaults",
 	platforms: [
-		.macOS(.v10_12),
-		.iOS(.v10),
-		.tvOS(.v10),
-		.watchOS(.v3)
+		.macOS(.v10_13),
+		.iOS(.v12),
+		.tvOS(.v12),
+		.watchOS(.v5)
 	],
 	products: [
 		.library(

Sources/Defaults/Defaults+Bridge.swift

@@ -88,16 +88,7 @@ extension Defaults {
 				return nil
 			}
 
-			// Version below macOS 10.13 and iOS 11.0 does not support `archivedData(withRootObject:requiringSecureCoding:)`.
-			// We need to set `requiresSecureCoding` ourselves.
-			if #available(iOS 11.0, macOS 10.13, tvOS 11.0, watchOS 4.0, iOSApplicationExtension 11.0, macOSApplicationExtension 10.13, tvOSApplicationExtension 11.0, watchOSApplicationExtension 4.0, *) {
 			return try? NSKeyedArchiver.archivedData(withRootObject: object, requiringSecureCoding: true)
-			} else {
-				let keyedArchiver = NSKeyedArchiver()
-				keyedArchiver.requiresSecureCoding = true
-				keyedArchiver.encode(object, forKey: NSKeyedArchiveRootObjectKey)
-				return keyedArchiver.encodedData
-			}
 		}
 
 		public func deserialize(_ object: Serializable?) -> Value? {

Tests/DefaultsTests/DefaultsNSSecureCodingTests.swift

@@ -3,7 +3,6 @@ import CoreData
 import Defaults
 import XCTest
 
-@available(iOS 11.0, macOS 10.13, tvOS 11.0, watchOS 4.0, iOSApplicationExtension 11.0, macOSApplicationExtension 10.13, tvOSApplicationExtension 11.0, watchOSApplicationExtension 4.0, *)
 private final class ExamplePersistentHistory: NSPersistentHistoryToken, Defaults.Serializable {
 	let value: String
 
@@ -25,16 +24,14 @@ private final class ExamplePersistentHistory: NSPersistentHistoryToken, Defaults
 }
 
 // NSSecureCoding
-@available(iOS 11.0, macOS 10.13, tvOS 11.0, watchOS 4.0, iOSApplicationExtension 11.0, macOSApplicationExtension 10.13, tvOSApplicationExtension 11.0, watchOSApplicationExtension 4.0, *) private let persistentHistoryValue = ExamplePersistentHistory(value: "ExampleToken")
+private let persistentHistoryValue = ExamplePersistentHistory(value: "ExampleToken")
 
-@available(iOS 11.0, macOS 10.13, tvOS 11.0, watchOS 4.0, iOSApplicationExtension 11.0, macOSApplicationExtension 10.13, tvOSApplicationExtension 11.0, watchOSApplicationExtension 4.0, *)
 extension Defaults.Keys {
 	fileprivate static let persistentHistory = Key<ExamplePersistentHistory>("persistentHistory", default: persistentHistoryValue)
 	fileprivate static let persistentHistoryArray = Key<[ExamplePersistentHistory]>("array_persistentHistory", default: [persistentHistoryValue])
 	fileprivate static let persistentHistoryDictionary = Key<[String: ExamplePersistentHistory]>("dictionary_persistentHistory", default: ["0": persistentHistoryValue])
 }
 
-@available(iOS 11.0, macOS 10.13, tvOS 11.0, watchOS 4.0, iOSApplicationExtension 11.0, macOSApplicationExtension 10.13, tvOSApplicationExtension 11.0, watchOSApplicationExtension 4.0, *)
 final class DefaultsNSSecureCodingTests: XCTestCase {
 	override func setUp() {
 		super.setUp()
@@ -313,7 +310,6 @@ final class DefaultsNSSecureCodingTests: XCTestCase {
 		waitForExpectations(timeout: 10)
 	}
 
-	@available(iOS 11.0, macOS 10.13, tvOS 11.0, watchOS 4.0, iOSApplicationExtension 11.0, macOSApplicationExtension 10.13, tvOSApplicationExtension 11.0, watchOSApplicationExtension 4.0, *)
 	func testObserveMultipleNSSecureKeys() {
 		let key1 = Defaults.Key<ExamplePersistentHistory>("observeNSSecureCodingKey1", default: ExamplePersistentHistory(value: "TestValue"))
 		let key2 = Defaults.Key<ExamplePersistentHistory>("observeNSSecureCodingKey2", default: ExamplePersistentHistory(value: "TestValue"))

readme.md

@@ -23,10 +23,10 @@ For a real-world example, see the [Plash app](https://github.com/sindresorhus/Pl
 
 ## Compatibility
 
-- macOS 10.12+
-- iOS 10+
-- tvOS 10+
-- watchOS 3+
+- macOS 10.13+
+- iOS 12+
+- tvOS 12+
+- watchOS 5+
 
 <br>