fix: shadow JS<->WASM bridge methods

thermion_dart/lib/thermion_dart/compatibility/web/interop/thermion_viewer_dart_bridge.dart

@@ -135,8 +135,8 @@ class ThermionViewerJSDartBridge {
         .loadGlb(path, numInstances: numInstances)
         .then((entity) => entity.toJS)
         .catchError((err) {
-          print("Error: $err");
-        }).toJS;
+      print("Error: $err");
+    }).toJS;
   }
 
   @JSExport()
@@ -720,4 +720,20 @@ class ThermionViewerJSDartBridge {
       {JSFunction? callback, bool affectsTransform = false}) {
     throw UnimplementedError();
   }
+
+  @JSExport()
+  JSPromise setShadowsEnabled(bool enabled) {
+    return viewer.setShadowsEnabled(enabled).toJS;
+  }
+
+  @JSExport()
+  JSPromise setShadowType(int shadowType) {
+    return viewer.setShadowType(ShadowType.values[shadowType]).toJS;
+  }
+
+  @JSExport()
+  JSPromise setSoftShadowOptions(
+      double penumbraScale, double penumbraRatioScale) {
+    return viewer.setSoftShadowOptions(penumbraScale, penumbraRatioScale).toJS;
+  }
 }

thermion_dart/lib/thermion_dart/compatibility/web/interop/thermion_viewer_js.dart

@@ -829,7 +829,7 @@ class ThermionViewerJS implements ThermionViewer {
   
   @override
   Future setShadowType(ShadowType shadowType) {
-    return _shim.setShadowType(shadowType).toDart;
+    return _shim.setShadowType(shadowType.index).toDart;
   }
   
   @override

thermion_dart/lib/thermion_dart/compatibility/web/interop/thermion_viewer_js_shim.dart

@@ -412,7 +412,7 @@ extension type ThermionViewerJSShim(JSObject _) implements JSObject {
 
   @JS('setShadowType')
   external JSPromise setShadowType(
-      ShadowType shadowType);
+      int shadowType);
 
   @JS('setSoftShadowOptions')
   external JSPromise setSoftShadowOptions(