fix(isolate-manager): add stub implementation for web/WASM platforms

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Changelog
 
+## 12.0.4
+- **FIX**(wasm): Resolve WASM incompatibility caused by unconditional `dart:isolate` import. The `IsolateManager` is now loaded via a conditional import, so web/WASM builds use a stub that falls back to single-threaded processing.
+
 ## 12.0.3
 - **FEAT**(crop-rotate-editor): Add `exportOvalMask` to `CropRotateEditorConfigs` (default `true`). When set to `false`, the exported image uses a plain rectangular crop even if `CropMode.oval` is active, while the oval UI remains visible inside the crop editor.
 - **FEAT**(crop-rotate-editor): Add `helperLineWidth` to `CropRotateEditorStyle`, allowing the grid line thickness to be customized or hidden entirely by setting it to `0`.

lib/shared/services/content_recorder/controllers/content_recorder_controller.dart

@@ -14,7 +14,8 @@ import '/shared/utils/decode_image.dart';
 import '/shared/utils/unique_id_generator.dart';
 import '../services/image_converter_service.dart';
 import '../services/image_render_service.dart';
-import '../services/isolate_manager.dart';
+import '../services/isolate_manager_stub.dart'
+    if (dart.library.io) '../services/isolate_manager.dart';
 import '../services/thread_fallback_manager.dart';
 import '../services/thread_manager.dart';
 import '../services/web_worker/web_worker_manager_dummy.dart'

lib/shared/services/content_recorder/services/isolate_manager_stub.dart

@@ -0,0 +1,9 @@
+// Project imports:
+import 'thread_fallback_manager.dart';
+
+/// Stub implementation of [IsolateManager] for web/WASM platforms where
+/// dart:isolate is not available. Falls back to single-threaded processing.
+class IsolateManager extends ThreadFallbackManager {
+  // ignore: public_member_api_docs
+  IsolateManager(super.configs);
+}

pubspec.yaml

@@ -1,6 +1,6 @@
 name: pro_image_editor
 description: "A Flutter image editor: Seamlessly enhance your images with user-friendly editing features."
-version: 12.0.3
+version: 12.0.4
 homepage: https://github.com/hm21/pro_image_editor/
 repository: https://github.com/hm21/pro_image_editor/
 documentation: https://github.com/hm21/pro_image_editor/