Add synchronised persistence to WasmDatabase

drift/lib/native.dart

@@ -132,12 +132,12 @@ class NativeDatabase extends DelegatedDatabase {
 class _NativeDelegate extends Sqlite3Delegate<Database> {
   final File? file;
 
-  _NativeDelegate(this.file, DatabaseSetup? setup) : super(setup);
+  _NativeDelegate(this.file, DatabaseSetup? setup) : super(setup, false);
 
   _NativeDelegate.opened(
       Database db, DatabaseSetup? setup, bool closeUnderlyingWhenClosed)
       : file = null,
-        super.opened(db, setup, closeUnderlyingWhenClosed);
+        super.opened(db, setup, closeUnderlyingWhenClosed, false);
 
   @override
   Database openDatabase() {

drift/lib/src/sqlite3/database.dart

@@ -17,15 +17,18 @@ abstract class Sqlite3Delegate<DB extends CommonDatabase>
   bool _hasCreatedDatabase = false;
   bool _isOpen = false;
 
+  final bool _syncPersistence;
   final void Function(DB)? _setup;
   final bool _closeUnderlyingWhenClosed;
 
   /// A delegate that will call [openDatabase] to open the database.
-  Sqlite3Delegate(this._setup) : _closeUnderlyingWhenClosed = true;
+  Sqlite3Delegate(this._setup, this._syncPersistence)
+      : _closeUnderlyingWhenClosed = true;
 
-  /// A delegate using an underlying sqlite3 database object that has alreaddy
+  /// A delegate using an underlying sqlite3 database object that has already
   /// been opened.
-  Sqlite3Delegate.opened(this._db, this._setup, this._closeUnderlyingWhenClosed)
+  Sqlite3Delegate.opened(this._db, this._setup, this._closeUnderlyingWhenClosed,
+      this._syncPersistence)
       : _hasCreatedDatabase = true {
     _initializeDatabase();
   }
@@ -88,6 +91,10 @@ abstract class Sqlite3Delegate<DB extends CommonDatabase>
       stmt.dispose();
     }
 
+    if (_syncPersistence) {
+      await _db.flush();
+    }
+
     return Future.value();
   }
 
@@ -99,6 +106,10 @@ abstract class Sqlite3Delegate<DB extends CommonDatabase>
       stmt.execute(args);
       stmt.dispose();
     }
+
+    if (_syncPersistence) {
+      await _db.flush();
+    }
   }
 
   @override
@@ -132,6 +143,9 @@ abstract class Sqlite3Delegate<DB extends CommonDatabase>
     if (_closeUnderlyingWhenClosed) {
       beforeClose(_db);
       _db.dispose();
+      if (_syncPersistence) {
+        await _db.flush();
+      }
     }
   }
 }

drift/lib/wasm.dart

@@ -38,13 +38,21 @@ class WasmDatabase extends DelegatedDatabase {
 
   /// Creates a wasm database at [path] in the virtual file system of the
   /// [sqlite3] module.
+  /// If [synchronizedPersistence] is enabled, the data is guaranteed to be
+  /// stored in the IndexedDB when the request is complete. Attention!
+  /// Insert/update queries may be slower when this option enabled. If you want
+  /// to insert more than one rows, be sure you run in a transaction if
+  /// possible.
   factory WasmDatabase({
     required CommmonSqlite3 sqlite3,
     required String path,
     WasmDatabaseSetup? setup,
+    bool synchronizedPersistence = false,
     bool logStatements = false,
   }) {
-    return WasmDatabase._(_WasmDelegate(sqlite3, path, setup), logStatements);
+    return WasmDatabase._(
+        _WasmDelegate(sqlite3, path, setup, synchronizedPersistence),
+        logStatements);
   }
 
   /// Creates an in-memory database in the loaded [sqlite3] database.
@@ -53,7 +61,8 @@ class WasmDatabase extends DelegatedDatabase {
     WasmDatabaseSetup? setup,
     bool logStatements = false,
   }) {
-    return WasmDatabase._(_WasmDelegate(sqlite3, null, setup), logStatements);
+    return WasmDatabase._(
+        _WasmDelegate(sqlite3, null, setup, false), logStatements);
   }
 }
 
@@ -61,8 +70,9 @@ class _WasmDelegate extends Sqlite3Delegate<CommonDatabase> {
   final CommmonSqlite3 _sqlite3;
   final String? _path;
 
-  _WasmDelegate(this._sqlite3, this._path, WasmDatabaseSetup? setup)
+  _WasmDelegate(
-      : super(setup);
+      this._sqlite3, this._path, WasmDatabaseSetup? setup, bool syncPersistence)
+      : super(setup, syncPersistence);
 
   @override
   CommonDatabase openDatabase() {

drift/pubspec.yaml

@@ -36,3 +36,8 @@ dependency_overrides:
     path: ../drift_dev
   sqlparser:
     path: ../sqlparser
+  sqlite3:
+    git:
+      url: https://github.com/westito/sqlite3.dart.git
+      ref: indexeddb-improvements
+      path: sqlite3