Fix downloading worker

Author: simolus3

packages/powersync_core/lib/src/database/powersync_database_impl.dart

@@ -6,4 +6,4 @@ export 'powersync_database_impl_stub.dart'
     // ignore: uri_does_not_exist
     if (dart.library.io) './native/native_powersync_database.dart'
     // ignore: uri_does_not_exist
-    if (dart.library.html) './web/web_powersync_database.dart';
+    if (dart.library.js_interop) './web/web_powersync_database.dart';

packages/powersync_core/lib/src/open_factory.dart

@@ -6,4 +6,4 @@ export 'open_factory/open_factory_stub.dart'
     // ignore: uri_does_not_exist
     if (dart.library.io) 'open_factory/native/native_open_factory.dart'
     // ignore: uri_does_not_exist
-    if (dart.library.html) 'open_factory/web/web_open_factory.dart';
+    if (dart.library.js_interop) 'open_factory/web/web_open_factory.dart';

packages/powersync_core/lib/src/setup_web.dart

@@ -23,7 +23,8 @@ Future<void> downloadWebAssets(List<String> arguments,
   final root = Directory.current.uri;
   print('Project root: ${root.toFilePath()}');
 
-  final wasmPath = '${root.toFilePath()}$outputDir/sqlite3.wasm';
+  final wasmFileName = encryption ? 'sqlite3mc.wasm' : 'sqlite3.wasm';
+  final wasmPath = '${root.toFilePath()}$outputDir/$wasmFileName';
 
   final workerPath = '${root.toFilePath()}$outputDir/powersync_db.worker.js';
   final syncWorkerPath =
@@ -86,9 +87,8 @@ Future<void> downloadWebAssets(List<String> arguments,
           You can view the full list of releases at https://github.com/powersync-ja/sqlite3.dart/releases""");
     }
 
-    final filename = encryption ? 'sqlite3mc.wasm' : 'sqlite3.wasm';
     final sqliteUrl =
-        'https://github.com/powersync-ja/sqlite3.dart/releases/download/$sqlite3Version/$filename';
+        'https://github.com/powersync-ja/sqlite3.dart/releases/download/$sqlite3Version/$wasmFileName';
 
     await downloadFile(httpClient, sqliteUrl, wasmPath);
   } catch (e) {

packages/powersync_core/lib/src/user_agent/user_agent.dart

@@ -2,4 +2,4 @@ export './user_agent_stub.dart'
     // ignore: uri_does_not_exist
     if (dart.library.io) './user_agent_native.dart'
     // ignore: uri_does_not_exist
-    if (dart.library.html) './user_agent_web.dart';
+    if (dart.library.js_interop) './user_agent_web.dart';

packages/powersync_core/test/utils/test_utils_impl.dart

@@ -2,4 +2,4 @@ export 'stub_test_utils.dart'
     // ignore: uri_does_not_exist
     if (dart.library.io) 'native_test_utils.dart'
     // ignore: uri_does_not_exist
-    if (dart.library.html) 'web_test_utils.dart';
+    if (dart.library.js_interop) 'web_test_utils.dart';