LibWeb/IDB: Implement auto-commit for IDBTransaction

Author: https://github.com/stelar7
Commit: https://github.com/LadybirdBrowser/ladybird/commit/de640ffef47
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4306
Reviewed-by: https://github.com/ADKaster ✅

Libraries/LibWeb/IndexedDB/IDBTransaction.h

@@ -49,10 +49,10 @@ public:
     [[nodiscard]] String uuid() const { return m_uuid; }
 
     void set_mode(Bindings::IDBTransactionMode mode) { m_mode = mode; }
-    void set_state(TransactionState state) { m_state = state; }
     void set_error(GC::Ptr<WebIDL::DOMException> error) { m_error = error; }
     void set_associated_request(GC::Ptr<IDBRequest> request) { m_associated_request = request; }
     void set_aborted(bool aborted) { m_aborted = aborted; }
+    void set_state(TransactionState state) { m_state = state; }
 
     [[nodiscard]] bool is_upgrade_transaction() const { return m_mode == Bindings::IDBTransactionMode::Versionchange; }
     [[nodiscard]] bool is_readonly() const { return m_mode == Bindings::IDBTransactionMode::Readonly; }

Libraries/LibWeb/IndexedDB/Internal/Algorithms.cpp

@@ -409,6 +409,15 @@ GC::Ref<IDBTransaction> upgrade_a_database(JS::Realm& realm, GC::Ref<IDBDatabase
         if (did_throw)
             abort_a_transaction(*transaction, WebIDL::AbortError::create(realm, "Version change event threw an exception"_string));
 
+        // AD-HOC:
+        // https://github.com/w3c/IndexedDB/issues/436
+        // The implementation must attempt to commit a transaction when all requests placed against the transaction have completed
+        // and their returned results handled,
+        // no new requests have been placed against the transaction,
+        // and the transaction has not been aborted.
+        if (transaction->state() == IDBTransaction::TransactionState::Inactive && transaction->request_list().is_empty() && !transaction->aborted())
+            commit_a_transaction(realm, transaction);
+
         wait_for_transaction = false;
     }));