update the result js interop definition

+import 'dart:js_interop';
+
+import 'package:mobile_scanner/src/enums/barcode_format.dart';
+
+/// The JS static interop class for the Result class in the ZXing library.
+///
+/// See also: https://github.com/zxing-js/library/blob/master/src/core/Result.ts
+@JS()
+@staticInterop
+abstract class Result {}
+
+extension ResultExt on Result {
+  /// Get the barcode format.
+  ///
+  /// See also https://github.com/zxing-js/library/blob/master/src/core/BarcodeFormat.ts
+  external JSFunction getBarcodeFormat;
+
+  /// Get the raw bytes of the result.
+  external JSFunction getRawBytes;
+
+  /// Get the points of the result.
+  external JSFunction getResultPoints;
+
+  /// Get the text of the result.
+  external JSFunction getText;
+
+  /// Get the timestamp of the result.
+  external JSFunction getTimestamp;
+
+  /// Get the barcode format of the result.
+  BarcodeFormat get barcodeFormat {
+    final JSNumber? format = getBarcodeFormat.callAsFunction() as JSNumber?;
+
+    switch (format?.toDartInt) {
+      case 0:
+        return BarcodeFormat.aztec;
+      case 1:
+        return BarcodeFormat.codabar;
+      case 2:
+        return BarcodeFormat.code39;
+      case 3:
+        return BarcodeFormat.code93;
+      case 4:
+        return BarcodeFormat.code128;
+      case 5:
+        return BarcodeFormat.dataMatrix;
+      case 6:
+        return BarcodeFormat.ean8;
+      case 7:
+        return BarcodeFormat.ean13;
+      case 8:
+        return BarcodeFormat.itf;
+      case 9:
+        // Maxicode
+        return BarcodeFormat.unknown;
+      case 10:
+        return BarcodeFormat.pdf417;
+      case 11:
+        return BarcodeFormat.qrCode;
+      case 12:
+        // RSS 14
+        return BarcodeFormat.unknown;
+      case 13:
+        // RSS EXPANDED
+        return BarcodeFormat.unknown;
+      case 14:
+        return BarcodeFormat.upcA;
+      case 15:
+        return BarcodeFormat.upcE;
+      case 16:
+        // UPC/EAN extension
+        return BarcodeFormat.unknown;
+      default:
+        return BarcodeFormat.unknown;
+    }
+  }
+}