Upgrade from 2.

5.
3" [patch]

src/database.class.js

@@ -96,7 +96,7 @@ class Database {
       throw new Error('A transaction is already active');
     }
 
-    return this.query('BEGIN');
+    return this.query('BEGIN').onsuccess(() => (this._transaction = true));
   }
 
   /**
@@ -109,7 +109,7 @@ class Database {
       throw new Error('No transaction is active');
     }
 
-    return this.query('COMMIT');
+    return this.query('COMMIT').onsuccess(() => (this._transaction = false));
   }
 }