format

@@ -96,7 +96,9 @@ abstract class BarcodeReader {
   }
   }
 
 
   /// Set a listener for the media stream settings.
   /// Set a listener for the media stream settings.
-  void setMediaTrackSettingsListener(void Function(MediaTrackSettings) listener) {
+  void setMediaTrackSettingsListener(
+    void Function(MediaTrackSettings) listener,
+  ) {
     throw UnimplementedError(
     throw UnimplementedError(
       'setMediaTrackConstraintsListener() has not been implemented.',
       'setMediaTrackConstraintsListener() has not been implemented.',
     );
     );

@@ -10,9 +10,9 @@ final class MediaTrackConstraintsDelegate {
 
 
   /// Get the settings for the given [mediaStream].
   /// Get the settings for the given [mediaStream].
   MediaTrackSettings? getSettings(MediaStream? mediaStream) {
   MediaTrackSettings? getSettings(MediaStream? mediaStream) {
-    final List<JSAny?> tracks = mediaStream?.getVideoTracks().toDart ?? const [];
+    final List<JSAny?>? tracks = mediaStream?.getVideoTracks().toDart;
 
 
-    if (tracks.isEmpty) {
+    if (tracks == null || tracks.isEmpty) {
       return null;
       return null;
     }
     }
 
 
@@ -24,7 +24,9 @@ final class MediaTrackConstraintsDelegate {
   /// Returns a list of supported flashlight modes for the given [mediaStream].
   /// Returns a list of supported flashlight modes for the given [mediaStream].
   ///
   ///
   /// The [TorchState.off] mode is always supported, regardless of the return value.
   /// The [TorchState.off] mode is always supported, regardless of the return value.
-  Future<List<TorchState>> getSupportedFlashlightModes(MediaStream? mediaStream) async {
+  Future<List<TorchState>> getSupportedFlashlightModes(
+    MediaStream? mediaStream,
+  ) async {
     if (mediaStream == null) {
     if (mediaStream == null) {
       return [];
       return [];
     }
     }
@@ -61,7 +63,10 @@ final class MediaTrackConstraintsDelegate {
   }
   }
 
 
   /// Set the flashlight state of the given [mediaStream] to the given [value].
   /// Set the flashlight state of the given [mediaStream] to the given [value].
-  Future<void> setFlashlightState(MediaStream? mediaStream, TorchState value) async {
+  Future<void> setFlashlightState(
+    MediaStream? mediaStream,
+    TorchState value,
+  ) async {
     if (mediaStream == null) {
     if (mediaStream == null) {
       return;
       return;
     }
     }

@@ -23,7 +23,8 @@ class MobileScannerWeb extends MobileScannerPlatform {
   final BarcodeReader _barcodeReader = ZXingBarcodeReader();
   final BarcodeReader _barcodeReader = ZXingBarcodeReader();
 
 
   /// The stream controller for the barcode stream.
   /// The stream controller for the barcode stream.
-  final StreamController<BarcodeCapture> _barcodesController = StreamController.broadcast();
+  final StreamController<BarcodeCapture> _barcodesController =
+      StreamController.broadcast();
 
 
   /// The subscription for the barcode stream.
   /// The subscription for the barcode stream.
   StreamSubscription<Object?>? _barcodesSubscription;
   StreamSubscription<Object?>? _barcodesSubscription;
@@ -34,7 +35,8 @@ class MobileScannerWeb extends MobileScannerPlatform {
   HTMLDivElement? _divElement;
   HTMLDivElement? _divElement;
 
 
   /// The stream controller for the media track settings stream.
   /// The stream controller for the media track settings stream.
-  final StreamController<MediaTrackSettings> _settingsController = StreamController.broadcast();
+  final StreamController<MediaTrackSettings> _settingsController =
+      StreamController.broadcast();
 
 
   /// The view type for the platform view factory.
   /// The view type for the platform view factory.
   final String _viewType = 'MobileScannerWeb';
   final String _viewType = 'MobileScannerWeb';
@@ -70,7 +72,8 @@ class MobileScannerWeb extends MobileScannerPlatform {
       throw const MobileScannerException(
       throw const MobileScannerException(
         errorCode: MobileScannerErrorCode.controllerUninitialized,
         errorCode: MobileScannerErrorCode.controllerUninitialized,
         errorDetails: MobileScannerErrorDetails(
         errorDetails: MobileScannerErrorDetails(
-          message: 'The controller was not yet initialized. Call start() before calling buildCameraView().',
+          message:
+              'The controller was not yet initialized. Call start() before calling buildCameraView().',
         ),
         ),
       );
       );
     }
     }
@@ -98,7 +101,8 @@ class MobileScannerWeb extends MobileScannerPlatform {
       throw const MobileScannerException(
       throw const MobileScannerException(
         errorCode: MobileScannerErrorCode.controllerAlreadyInitialized,
         errorCode: MobileScannerErrorCode.controllerAlreadyInitialized,
         errorDetails: MobileScannerErrorDetails(
         errorDetails: MobileScannerErrorDetails(
-          message: 'The scanner was already started. Call stop() before calling start() again.',
+          message:
+              'The scanner was already started. Call stop() before calling start() again.',
         ),
         ),
       );
       );
     }
     }
@@ -108,7 +112,9 @@ class MobileScannerWeb extends MobileScannerPlatform {
       _barcodesController.add(const BarcodeCapture());
       _barcodesController.add(const BarcodeCapture());
 
 
       // Listen for changes to the media track settings.
       // Listen for changes to the media track settings.
-      _barcodeReader.setMediaTrackSettingsListener(_handleMediaTrackSettingsChange);
+      _barcodeReader.setMediaTrackSettingsListener(
+        _handleMediaTrackSettingsChange,
+      );
 
 
       await _barcodeReader.start(
       await _barcodeReader.start(
         startOptions,
         startOptions,
@@ -120,7 +126,8 @@ class MobileScannerWeb extends MobileScannerPlatform {
       MobileScannerErrorCode errorCode = MobileScannerErrorCode.genericError;
       MobileScannerErrorCode errorCode = MobileScannerErrorCode.genericError;
 
 
       if (error is DOMException) {
       if (error is DOMException) {
-        if (errorMessage.contains('NotFoundError') || errorMessage.contains('NotSupportedError')) {
+        if (errorMessage.contains('NotFoundError') ||
+            errorMessage.contains('NotSupportedError')) {
           errorCode = MobileScannerErrorCode.unsupported;
           errorCode = MobileScannerErrorCode.unsupported;
         } else if (errorMessage.contains('NotAllowedError')) {
         } else if (errorMessage.contains('NotAllowedError')) {
           errorCode = MobileScannerErrorCode.permissionDenied;
           errorCode = MobileScannerErrorCode.permissionDenied;
@@ -137,13 +144,15 @@ class MobileScannerWeb extends MobileScannerPlatform {
     }
     }
 
 
     try {
     try {
-      _barcodesSubscription = _barcodeReader.detectBarcodes().listen((BarcodeCapture barcode) {
-        if (_barcodesController.isClosed) {
-          return;
-        }
+      _barcodesSubscription = _barcodeReader.detectBarcodes().listen(
+        (BarcodeCapture barcode) {
+          if (_barcodesController.isClosed) {
+            return;
+          }
 
 
-        _barcodesController.add(barcode);
-      });
+          _barcodesController.add(barcode);
+        },
+      );
 
 
       final bool hasTorch = await _barcodeReader.hasTorch();
       final bool hasTorch = await _barcodeReader.hasTorch();
 
 

@@ -95,7 +95,8 @@ extension ResultExt on Result {
 
 
   /// Get the raw bytes of the result.
   /// Get the raw bytes of the result.
   Uint8List? get rawBytes {
   Uint8List? get rawBytes {
-    final JSUint8Array? rawBytes = getRawBytes.callAsFunction() as JSUint8Array?;
+    final JSUint8Array? rawBytes =
+        getRawBytes.callAsFunction() as JSUint8Array?;
 
 
     return rawBytes?.toDart;
     return rawBytes?.toDart;
   }
   }

@@ -22,7 +22,8 @@ final class ZXingBarcodeReader extends BarcodeReader {
   void Function(web.MediaTrackSettings)? _onMediaTrackSettingsChanged;
   void Function(web.MediaTrackSettings)? _onMediaTrackSettingsChanged;
 
 
   /// The internal media stream track constraints delegate.
   /// The internal media stream track constraints delegate.
-  final MediaTrackConstraintsDelegate _mediaTrackConstraintsDelegate = const MediaTrackConstraintsDelegate();
+  final MediaTrackConstraintsDelegate _mediaTrackConstraintsDelegate =
+      const MediaTrackConstraintsDelegate();
 
 
   /// The internal barcode reader.
   /// The internal barcode reader.
   ZXingBrowserMultiFormatReader? _reader;
   ZXingBrowserMultiFormatReader? _reader;
@@ -93,7 +94,8 @@ final class ZXingBarcodeReader extends BarcodeReader {
       return null;
       return null;
     }
     }
 
 
-    final capabilities = web.window.navigator.mediaDevices.getSupportedConstraints();
+    final capabilities =
+        web.window.navigator.mediaDevices.getSupportedConstraints();
 
 
     final web.MediaStreamConstraints constraints;
     final web.MediaStreamConstraints constraints;
 
 
@@ -112,7 +114,9 @@ final class ZXingBarcodeReader extends BarcodeReader {
       );
       );
     }
     }
 
 
-    final JSAny? mediaStream = await web.window.navigator.mediaDevices.getUserMedia(constraints).toDart;
+    final JSAny? mediaStream = await web.window.navigator.mediaDevices
+        .getUserMedia(constraints)
+        .toDart;
 
 
     return mediaStream as web.MediaStream?;
     return mediaStream as web.MediaStream?;
   }
   }
@@ -135,11 +139,13 @@ final class ZXingBarcodeReader extends BarcodeReader {
     final web.MediaStream? stream = await _prepareMediaStream(cameraDirection);
     final web.MediaStream? stream = await _prepareMediaStream(cameraDirection);
 
 
     if (stream != null) {
     if (stream != null) {
-      final JSPromise? result = _reader?.attachStreamToVideo.callAsFunction(null, stream, videoElement) as JSPromise?;
+      final JSPromise? result = _reader?.attachStreamToVideo
+          .callAsFunction(null, stream, videoElement) as JSPromise?;
 
 
       await result?.toDart;
       await result?.toDart;
 
 
-      final web.MediaTrackSettings? settings = _mediaTrackConstraintsDelegate.getSettings(stream);
+      final web.MediaTrackSettings? settings =
+          _mediaTrackConstraintsDelegate.getSettings(stream);
 
 
       if (settings != null) {
       if (settings != null) {
         _onMediaTrackSettingsChanged?.call(settings);
         _onMediaTrackSettingsChanged?.call(settings);
@@ -193,7 +199,9 @@ final class ZXingBarcodeReader extends BarcodeReader {
   }
   }
 
 
   @override
   @override
-  void setMediaTrackSettingsListener(void Function(web.MediaTrackSettings) listener) {
+  void setMediaTrackSettingsListener(
+    void Function(web.MediaTrackSettings) listener,
+  ) {
     _onMediaTrackSettingsChanged ??= listener;
     _onMediaTrackSettingsChanged ??= listener;
   }
   }
 
 
@@ -210,9 +218,13 @@ final class ZXingBarcodeReader extends BarcodeReader {
           return Future<void>.value();
           return Future<void>.value();
         }
         }
 
 
-        await _mediaTrackConstraintsDelegate.setFlashlightState(mediaStream, value);
+        await _mediaTrackConstraintsDelegate.setFlashlightState(
+          mediaStream,
+          value,
+        );
 
 
-        final web.MediaTrackSettings? settings = _mediaTrackConstraintsDelegate.getSettings(mediaStream);
+        final web.MediaTrackSettings? settings =
+            _mediaTrackConstraintsDelegate.getSettings(mediaStream);
 
 
         if (settings != null) {
         if (settings != null) {
           _onMediaTrackSettingsChanged?.call(settings);
           _onMediaTrackSettingsChanged?.call(settings);
@@ -221,7 +233,10 @@ final class ZXingBarcodeReader extends BarcodeReader {
   }
   }
 
 
   @override
   @override
-  Future<void> start(StartOptions options, {required web.HTMLElement containerElement}) async {
+  Future<void> start(
+    StartOptions options, {
+    required web.HTMLElement containerElement,
+  }) async {
     final int detectionTimeoutMs = options.detectionTimeoutMs;
     final int detectionTimeoutMs = options.detectionTimeoutMs;
     final List<BarcodeFormat> formats = options.formats;
     final List<BarcodeFormat> formats = options.formats;
 
 
@@ -243,7 +258,8 @@ final class ZXingBarcodeReader extends BarcodeReader {
 
 
     _reader = ZXingBrowserMultiFormatReader(hints.jsify(), detectionTimeoutMs);
     _reader = ZXingBrowserMultiFormatReader(hints.jsify(), detectionTimeoutMs);
 
 
-    final web.HTMLVideoElement videoElement = web.document.createElement('video') as web.HTMLVideoElement;
+    final web.HTMLVideoElement videoElement =
+        web.document.createElement('video') as web.HTMLVideoElement;
 
 
     await _prepareVideoElement(
     await _prepareVideoElement(
       videoElement,
       videoElement,