NativeScript · farfromrefug · Aug 11, 2026 · Aug 11, 2026 · Aug 15, 2026 · Aug 18, 2026
diff --git a/lib/bootstrap.ts b/lib/bootstrap.ts
@@ -183,6 +183,7 @@ injector.requireCommand("run|ios", "./commands/run");
 injector.requireCommand("run|android", "./commands/run");
 injector.requireCommand("run|vision", "./commands/run");
 injector.requireCommand("run|visionos", "./commands/run");
+injector.requireCommand("run|catalyst", "./commands/run");
 injector.requireCommand("typings", "./commands/typings");
 
 injector.requireCommand("preview", "./commands/preview");
@@ -198,6 +199,7 @@ injector.requireCommand("build|ios", "./commands/build");
 injector.requireCommand("build|android", "./commands/build");
 injector.requireCommand("build|vision", "./commands/build");
 injector.requireCommand("build|visionos", "./commands/build");
+injector.requireCommand("build|catalyst", "./commands/build");
 injector.requireCommand("deploy", "./commands/deploy");
 
 injector.requireCommand("embed", "./commands/embedding/embed");

diff --git a/lib/commands/build.ts b/lib/commands/build.ts
@@ -278,3 +278,61 @@ export class BuildVisionOsCommand extends BuildIosCommand implements ICommand {
 
 injector.registerCommand("build|vision", BuildVisionOsCommand);
 injector.registerCommand("build|visionos", BuildVisionOsCommand);
+
+/**
+ * Builds the iOS target against the macOS SDK as a Mac Catalyst app.
+ */
+export class BuildCatalystCommand extends BuildIosCommand implements ICommand {
+	constructor(
+		protected $options: IOptions,
+		$errors: IErrors,
+		$projectData: IProjectData,
+		$platformsDataService: IPlatformsDataService,
+		$devicePlatformsConstants: Mobile.IDevicePlatformsConstants,
+		$buildController: IBuildController,
+		$platformValidationService: IPlatformValidationService,
+		$logger: ILogger,
+		$buildDataService: IBuildDataService,
+		protected $migrateController: IMigrateController,
+	) {
+		super(
+			$options,
+			$errors,
+			$projectData,
+			$platformsDataService,
+			$devicePlatformsConstants,
+			$buildController,
+			$platformValidationService,
+			$logger,
+			$buildDataService,
+			$migrateController,
+		);
+	}
+
+	public async execute(args: string[]): Promise<void> {
+		await this.executeCore([
+			this.$devicePlatformsConstants.Catalyst.toLowerCase(),
+		]);
+	}
+
+	public async canExecute(args: string[]): Promise<boolean> {
+		const platform = this.$devicePlatformsConstants.Catalyst;
+		if (!this.$options.force) {
+			await this.$migrateController.validate({
+				projectDir: this.$projectData.projectDir,
+				platforms: [platform],
+			});
+		}
+
+		super.validatePlatform(platform);
+
+		let canExecute = await super.canExecuteCommandBase(platform);
+		if (canExecute) {
+			canExecute = await super.validateArgs(args, platform);
+		}
+
+		return canExecute;
+	}
+}
+
+injector.registerCommand("build|catalyst", BuildCatalystCommand);
diff --git a/lib/commands/run.ts b/lib/commands/run.ts
@@ -30,20 +30,20 @@ export class RunCommandBase implements ICommand {
 		private $migrateController: IMigrateController,
 		private $options: IOptions,
 		private $projectData: IProjectData,
-		private $keyCommandHelper: IKeyCommandHelper
+		private $keyCommandHelper: IKeyCommandHelper,
 	) {}
 
 	public allowedParameters: ICommandParameter[] = [];
 	public async execute(args: string[]): Promise<void> {
 		await this.$liveSyncCommandHelper.executeCommandLiveSync(
 			this.platform,
-			this.liveSyncCommandHelperAdditionalOptions
+			this.liveSyncCommandHelperAdditionalOptions,
 		);
 
 		if (process.env.NS_IS_INTERACTIVE) {
 			this.$keyCommandHelper.attachKeyCommands(
 				this.platform as IKeyCommandPlatform,
-				"run"
+				"run",
 			);
 		}
 	}
@@ -64,7 +64,7 @@ export class RunCommandBase implements ICommand {
 			: [
 					this.$devicePlatformsConstants.Android,
 					this.$devicePlatformsConstants.iOS,
-			  ];
+				];
 
 		if (!this.$options.force) {
 			await this.$migrateController.validate({
@@ -100,7 +100,7 @@ export class RunIosCommand implements ICommand {
 		protected $injector: IInjector,
 		protected $options: IOptions,
 		protected $platformValidationService: IPlatformValidationService,
-		protected $projectDataService: IProjectDataService
+		protected $projectDataService: IProjectDataService,
 	) {}
 
 	public async execute(args: string[]): Promise<void> {
@@ -113,11 +113,11 @@ export class RunIosCommand implements ICommand {
 		if (
 			!this.$platformValidationService.isPlatformSupportedForOS(
 				this.platform,
-				projectData
+				projectData,
 			)
 		) {
 			this.$errors.fail(
-				`Applications for platform ${this.platform} can not be built on this OS`
+				`Applications for platform ${this.platform} can not be built on this OS`,
 			);
 		}
 
@@ -127,7 +127,7 @@ export class RunIosCommand implements ICommand {
 				this.$options.provision,
 				this.$options.teamId,
 				projectData,
-				this.platform.toLowerCase()
+				this.platform.toLowerCase(),
 			));
 		return result;
 	}
@@ -154,7 +154,7 @@ export class RunAndroidCommand implements ICommand {
 		private $injector: IInjector,
 		private $options: IOptions,
 		private $platformValidationService: IPlatformValidationService,
-		private $projectData: IProjectData
+		private $projectData: IProjectData,
 	) {}
 
 	public async execute(args: string[]): Promise<void> {
@@ -167,11 +167,11 @@ export class RunAndroidCommand implements ICommand {
 		if (
 			!this.$platformValidationService.isPlatformSupportedForOS(
 				this.$devicePlatformsConstants.Android,
-				this.$projectData
+				this.$projectData,
 			)
 		) {
 			this.$errors.fail(
-				`Applications for platform ${this.$devicePlatformsConstants.Android} can not be built on this OS`
+				`Applications for platform ${this.$devicePlatformsConstants.Android} can not be built on this OS`,
 			);
 		}
 
@@ -190,7 +190,7 @@ export class RunAndroidCommand implements ICommand {
 			this.$options.provision,
 			this.$options.teamId,
 			this.$projectData,
-			this.$devicePlatformsConstants.Android.toLowerCase()
+			this.$devicePlatformsConstants.Android.toLowerCase(),
 		);
 	}
 }
@@ -208,18 +208,47 @@ export class RunVisionOSCommand extends RunIosCommand {
 		protected $injector: IInjector,
 		protected $options: IOptions,
 		protected $platformValidationService: IPlatformValidationService,
-		protected $projectDataService: IProjectDataService
+		protected $projectDataService: IProjectDataService,
 	) {
 		super(
 			$devicePlatformsConstants,
 			$errors,
 			$injector,
 			$options,
 			$platformValidationService,
-			$projectDataService
+			$projectDataService,
 		);
 	}
 }
 
 injector.registerCommand("run|vision", RunVisionOSCommand);
 injector.registerCommand("run|visionos", RunVisionOSCommand);
+
+/**
+ * Runs the Mac Catalyst build of the app on this machine.
+ */
+export class RunCatalystCommand extends RunIosCommand {
+	public get platform(): string {
+		return this.$devicePlatformsConstants.Catalyst;
+	}
+
+	constructor(
+		protected $devicePlatformsConstants: Mobile.IDevicePlatformsConstants,
+		protected $errors: IErrors,
+		protected $injector: IInjector,
+		protected $options: IOptions,
+		protected $platformValidationService: IPlatformValidationService,
+		protected $projectDataService: IProjectDataService,
+	) {
+		super(
+			$devicePlatformsConstants,
+			$errors,
+			$injector,
+			$options,
+			$platformValidationService,
+			$projectDataService,
+		);
+	}
+}
+
+injector.registerCommand("run|catalyst", RunCatalystCommand);
diff --git a/lib/common/bootstrap.ts b/lib/common/bootstrap.ts
@@ -81,6 +81,10 @@ injector.require(
 	"iOSSimulatorDiscovery",
 	"./mobile/mobile-core/ios-simulator-discovery",
 );
+injector.require(
+	"macCatalystDeviceDiscovery",
+	"./mobile/mobile-core/mac-catalyst-discovery"
+);
 injector.require(
 	"androidDeviceDiscovery",
 	"./mobile/mobile-core/android-device-discovery",

diff --git a/lib/common/definitions/mobile.d.ts b/lib/common/definitions/mobile.d.ts
@@ -139,6 +139,13 @@ declare global {
 			destroyAllSockets(): Promise<void>;
 		}
 
+		interface IMacCatalystDevice extends IDevice {
+			/**
+			 * Absolute path of the built .app bundle this device runs and syncs into.
+			 */
+			applicationBundlePath: string;
+		}
+
 		interface IAndroidDevice extends IDevice {
 			adb: Mobile.IDeviceAndroidDebugBridge;
 			init(): Promise<void>;
@@ -1105,6 +1112,7 @@ declare global {
 			isAndroidPlatform(platform: string): boolean;
 			isiOSPlatform(platform: string): boolean;
 			isvisionOSPlatform(platform: string): boolean;
+			isCatalystPlatform(platform: string): boolean;
 			isApplePlatform(platform: string): boolean;
 			normalizePlatformName(platform: string): string;
 			validatePlatformName(platform: string): string;
@@ -1149,10 +1157,12 @@ declare global {
 			iOS: string;
 			Android: string;
 			visionOS: string;
+			Catalyst: string;
 
 			isiOS(value: string): boolean;
 			isAndroid(value: string): boolean;
 			isvisionOS(value: string): boolean;
+			isCatalyst(value: string): boolean;
 		}
 
 		interface IDeviceApplication {

diff --git a/lib/common/mobile/device-platforms-constants.ts b/lib/common/mobile/device-platforms-constants.ts
@@ -6,6 +6,8 @@ export class DevicePlatformsConstants
 	public iOS = "iOS";
 	public Android = "Android";
 	public visionOS = "visionOS";
+	// Not a runtime of its own: iOS rebuilt against the macOS SDK.
+	public Catalyst = "Catalyst";
 
 	public isiOS(value: string) {
 		return value.toLowerCase() === this.iOS.toLowerCase();
@@ -18,5 +20,9 @@ export class DevicePlatformsConstants
 	public isvisionOS(value: string) {
 		return value.toLowerCase() === this.visionOS.toLowerCase();
 	}
+
+	public isCatalyst(value: string) {
+		return value.toLowerCase() === this.Catalyst.toLowerCase();
+	}
 }
 injector.register("devicePlatformsConstants", DevicePlatformsConstants);