Add BATCH_WRITING to database.worker

src/service-workers/database.worker.js

@@ -45,6 +45,21 @@ self.addEventListener('message', async (event) => {
     } catch (error) {
       event.ports[0].postMessage({ status: 'error', message: error.message });
     }
+  } else if (data.type === 'BATCH_WRITING') {
+    const { storeName, objects } = data.payload;
+    const db = await openDatabase();
+    const tx = db.transaction(storeName, 'readwrite');
+    const store = tx.objectStore(storeName);
+
+    for (const { key, object } of objects) {
+      if (key) {
+        await store.put(object, key);
+      } else {
+        await store.put(object);
+      }
+    }
+
+    await tx.done;
   }
 });