feat: Support for strict concurrency

Author: lukeredpath

Demo Project/ResponsiveTextFieldDemo.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 52;
+	objectVersion = 54;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -108,8 +108,9 @@
 		A328FAA525FD8A5300B9CE72 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
+				BuildIndependentTargetsInParallel = YES;
 				LastSwiftUpdateCheck = 1240;
-				LastUpgradeCheck = 1240;
+				LastUpgradeCheck = 1600;
 				TargetAttributes = {
 					A328FAAC25FD8A5300B9CE72 = {
 						CreatedOnToolsVersion = 12.4;
@@ -196,6 +197,7 @@
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_NO_COMMON_BLOCKS = YES;
@@ -257,6 +259,7 @@
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
@@ -291,6 +294,8 @@
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = co.uk.lukeredpath.ResponsiveTextField;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_STRICT_CONCURRENCY = complete;
+				SWIFT_UPCOMING_FEATURE_INFER_SENDABLE_FROM_CAPTURES = YES;
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
@@ -312,6 +317,8 @@
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = co.uk.lukeredpath.ResponsiveTextField;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_STRICT_CONCURRENCY = complete;
+				SWIFT_UPCOMING_FEATURE_INFER_SENDABLE_FROM_CAPTURES = YES;
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.3
+// swift-tools-version:5.10
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
@@ -20,10 +20,20 @@ let package = Package(
             name: "ResponsiveTextField",
             dependencies: [
                 .product(name: "CombineSchedulers", package: "combine-schedulers")
-            ]),
+            ],
+            swiftSettings: [
+                .enableExperimentalFeature("StrictConcurrency"),
+                .enableUpcomingFeature("InferSendableFromCaptures")
+            ]
+        ),
         .testTarget(
             name: "ResponsiveTextFieldTests",
             dependencies: ["ResponsiveTextField", "SnapshotTesting"],
-            exclude: ["__Snapshots__"]),
+            exclude: ["__Snapshots__"],
+            swiftSettings: [
+                .enableExperimentalFeature("StrictConcurrency"),
+                .enableUpcomingFeature("InferSendableFromCaptures")
+            ]
+        )
     ]
 )

ResponsiveTextField.xcworkspace/xcshareddata/xcschemes/Demo App.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1240"
+   LastUpgradeVersion = "1600"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

ResponsiveTextField.xcworkspace/xcshareddata/xcschemes/ResponsiveTextField.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1240"
+   LastUpgradeVersion = "1600"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

Sources/ResponsiveTextField/ResponsiveTextField.swift

@@ -153,13 +153,14 @@ public struct ResponsiveTextField {
 
 // MARK: - Managing the first responder state
 
-public struct FirstResponderStateChangeHandler {
+@MainActor
+public struct FirstResponderStateChangeHandler: Sendable {
     /// A closure that will be called when the first responder state changes.
     ///
     /// - Parameters:
     ///     - Bool: A boolean indicating if the text field is now the first responder or not.
     ///
-    public var handleStateChange: (Bool) -> Void
+    public var handleStateChange: @Sendable @MainActor (Bool) -> Void
 
     /// Allows fine-grained control over if the text field should become the first responder.
     ///
@@ -169,7 +170,7 @@ public struct FirstResponderStateChangeHandler {
     /// If the responder change was triggered programatically by a `FirstResponderDemand`
     /// and this returns `false` the demand will still be marked as fulfilled and reset to `nil`.
     ///
-    public var canBecomeFirstResponder: (() -> Bool)?
+    public var canBecomeFirstResponder: (@Sendable @MainActor () -> Bool)?
 
     /// Allows fine-grained control over if the text field should resign the first responder.
     ///
@@ -179,21 +180,21 @@ public struct FirstResponderStateChangeHandler {
     /// If the responder change was triggered programatically by a `FirstResponderDemand`
     /// and this returns `false` the demand will still be marked as fulfilled and reset to `nil`.
     ///
-    public var canResignFirstResponder: (() -> Bool)?
+    public var canResignFirstResponder: (@Sendable @MainActor () -> Bool)?
 
     /// Initialises a state change handler with a `handleStateChange` callback.
     ///
     /// Most of the time this is the only callback that you will need to provide so this initialiser
     /// can be called with trailing closure syntax.
     ///
-    public init(handleStateChange: @escaping (Bool) -> Void) {
+    public init(handleStateChange: @escaping @Sendable @MainActor (Bool) -> Void) {
         self.handleStateChange = handleStateChange
     }
 
     public init(
-        handleStateChange: @escaping (Bool) -> Void,
-        canBecomeFirstResponder: (() -> Bool)? = nil,
-        canResignFirstResponder: (() -> Bool)? = nil
+        handleStateChange: @escaping @Sendable @MainActor (Bool) -> Void,
+        canBecomeFirstResponder: (@Sendable @MainActor () -> Bool)? = nil,
+        canResignFirstResponder: (@Sendable @MainActor () -> Bool)? = nil
     ) {
         self.handleStateChange = handleStateChange
         self.canBecomeFirstResponder = canBecomeFirstResponder
@@ -253,7 +254,8 @@ public struct FirstResponderStateChangeHandler {
     /// cycle completes using this method. You can pass in any suitable scheduler, such as `RunLoop.main` or
     /// `DispatchQueue.main`.
     ///
-    public func receive<S: Scheduler>(on scheduler: S, options: S.SchedulerOptions? = nil) -> Self {
+    public func receive<S: Scheduler>(on scheduler: S, options: S.SchedulerOptions? = nil) -> Self
+    where S: Sendable, S.SchedulerOptions: Sendable {
         return .init(
             handleStateChange: { isFirstResponder in
                 scheduler.schedule(options: options) {
@@ -288,7 +290,7 @@ extension FirstResponderStateChangeHandler {
 
 /// Represents a request to change the text field's first responder state.
 ///
-public enum FirstResponderDemand: Equatable {
+public enum FirstResponderDemand: Equatable, Sendable {
     /// The text field should become first responder on the next view update.
     case shouldBecomeFirstResponder
 
@@ -466,10 +468,10 @@ extension ResponsiveTextField {
     /// that you use in your app. Configurations are composable and can be combined to create more
     /// detailed configurations.
     ///
-    public struct Configuration {
-        var configure: (UITextField) -> Void
+    public struct Configuration: Sendable {
+        var configure: @MainActor @Sendable (UITextField) -> Void
 
-        public init(configure: @escaping (UITextField) -> Void) {
+        public init(configure: @escaping @MainActor @Sendable (UITextField) -> Void) {
             self.configure = configure
         }
 

Tests/ResponsiveTextFieldTests/ResponsiveTextFieldTests.swift

@@ -16,6 +16,7 @@ final class ResponsiveTextFieldTests: XCTestCase {
         }
     }
 
+    @MainActor
     func testEmptyTextField() {
         assertSnapshot(
             of: ResponsiveTextField(
@@ -29,6 +30,7 @@ final class ResponsiveTextFieldTests: XCTestCase {
         )
     }
 
+    @MainActor
     func testTextFieldWithText() {
         assertSnapshot(
             of: ResponsiveTextField(
@@ -42,6 +44,7 @@ final class ResponsiveTextFieldTests: XCTestCase {
         )
     }
 
+    @MainActor
     func testSecureTextEntry() {
         assertSnapshot(
             of: ResponsiveTextField(
@@ -55,6 +58,7 @@ final class ResponsiveTextFieldTests: XCTestCase {
         )
     }
 
+    @MainActor
     func testTextFieldCustomTextStyle() {
         assertSnapshot(
             of: ResponsiveTextField(
@@ -71,7 +75,8 @@ final class ResponsiveTextFieldTests: XCTestCase {
         )
     }
 
-    func testTextFieldCustomTextAlignment() {     
+    @MainActor
+    func testTextFieldCustomTextAlignment() {
         assertSnapshot(
             of: ResponsiveTextField(
                 placeholder: "Placeholder Text",