Initial commit: 91dj android client dev_1.0.0

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

analytics_sdk/lib/utils/js_interop_modern.dart

@@ -0,0 +1,57 @@
+// ignore_for_file: undefined_class, undefined_identifier, undefined_method, uri_does_not_exist
+
+import 'dart:js_interop';
+import 'dart:js_interop_unsafe';
+
+/// Dynamic JavaScript interop helpers for Dart 3.10 and WebAssembly builds.
+Object? getJsProperty(Object object, Object property) {
+  final value = (object as JSObject).getProperty<JSAny?>(
+    _propertyToJs(property),
+  );
+  return _toDartValue(value);
+}
+
+bool hasJsProperty(Object object, String property) =>
+    (object as JSObject).has(property);
+
+Object? callJsMethod(
+  Object object,
+  String method, [
+  List<Object?> arguments = const [],
+]) {
+  final value = (object as JSObject).callMethodVarArgs<JSAny?>(
+    method.toJS,
+    arguments.map(_valueToJs).toList(),
+  );
+  return _toDartValue(value);
+}
+
+Object? constructJsObject(
+  Object constructor, [
+  List<Object?> arguments = const [],
+]) =>
+    (constructor as JSFunction).callAsConstructorVarArgs<JSObject>(
+      arguments.map(_valueToJs).toList(),
+    );
+
+JSAny _propertyToJs(Object property) {
+  if (property is String) return property.toJS;
+  if (property is num) return property.toJS;
+  throw ArgumentError.value(property, 'property', 'Must be a string or number');
+}
+
+JSAny? _valueToJs(Object? value) {
+  if (value == null) return null;
+  if (value is JSAny) return value;
+  if (value is String) return value.toJS;
+  if (value is num) return value.toJS;
+  if (value is bool) return value.toJS;
+  throw ArgumentError.value(value, 'value', 'Unsupported JavaScript argument');
+}
+
+Object? _toDartValue(JSAny? value) {
+  if (value is JSString) return value.toDart;
+  if (value is JSNumber) return value.toDartDouble;
+  if (value is JSBoolean) return value.toDart;
+  return value;
+}