From b309d3a4406e377c67dd132fb7d9cf4c7c7c2848 Mon Sep 17 00:00:00 2001
From: Jackson Morgan <jaxoncreed@gmail.com>
Date: Wed, 20 Aug 2025 14:13:03 -0400
Subject: [PATCH] Exposed transaction dataset for useChange and added didChange
 to transaction dataset

---
 packages/react/src/methods/change/types.ts          |  1 +
 .../src/methods/change/useChangeMatchObject.ts      |  4 ++--
 .../src/methods/change/useChangeMatchSubject.ts     |  4 ++--
 .../react/src/methods/change/useChangeSubject.ts    |  4 ++--
 .../subscribable-dataset/src/TransactionDataset.ts  | 13 +++++++++++++
 packages/subscribable-dataset/src/types.ts          |  1 +
 6 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/packages/react/src/methods/change/types.ts b/packages/react/src/methods/change/types.ts
index 690b8aa..5719939 100644
--- a/packages/react/src/methods/change/types.ts
+++ b/packages/react/src/methods/change/types.ts
@@ -8,6 +8,7 @@ export type useChangeReturn<Type, Plugins extends ConnectedPlugin[]> = [
   Type,
   useChangeSetData<Type, Plugins>,
   useChangeCommitData<Plugins>,
+  transactionDataset: ConnectedLdoTransactionDataset<Plugins>,
 ];
 
 type BaseOtherType = LdoBase | LdSet<LdoBase>;
diff --git a/packages/react/src/methods/change/useChangeMatchObject.ts b/packages/react/src/methods/change/useChangeMatchObject.ts
index add1195..79381d8 100644
--- a/packages/react/src/methods/change/useChangeMatchObject.ts
+++ b/packages/react/src/methods/change/useChangeMatchObject.ts
@@ -59,8 +59,8 @@ export function createUseChangeMatchObject<Plugins extends ConnectedPlugin[]>(
     );
 
     return useMemo(
-      () => [ldObject, setData, commitData],
-      [ldObject, setData, commitData],
+      () => [ldObject, setData, commitData, transactionDataset],
+      [ldObject, setData, commitData, transactionDataset],
     );
   };
 }
diff --git a/packages/react/src/methods/change/useChangeMatchSubject.ts b/packages/react/src/methods/change/useChangeMatchSubject.ts
index df49c32..0addb67 100644
--- a/packages/react/src/methods/change/useChangeMatchSubject.ts
+++ b/packages/react/src/methods/change/useChangeMatchSubject.ts
@@ -61,8 +61,8 @@ export function createUseChangeMatchSubject<Plugins extends ConnectedPlugin[]>(
     );
 
     return useMemo(
-      () => [ldObject, setData, commitData],
-      [ldObject, setData, commitData],
+      () => [ldObject, setData, commitData, transactionDataset],
+      [ldObject, setData, commitData, transactionDataset],
     );
   };
 }
diff --git a/packages/react/src/methods/change/useChangeSubject.ts b/packages/react/src/methods/change/useChangeSubject.ts
index babcbb5..8c8f40b 100644
--- a/packages/react/src/methods/change/useChangeSubject.ts
+++ b/packages/react/src/methods/change/useChangeSubject.ts
@@ -76,8 +76,8 @@ export function createUseChangeSubject<Plugins extends ConnectedPlugin[]>(
     );
 
     return useMemo(
-      () => [ldObject, setData, commitData],
-      [ldObject, setData, commitData],
+      () => [ldObject, setData, commitData, transactionDataset],
+      [ldObject, setData, commitData, transactionDataset],
     );
   };
 }
diff --git a/packages/subscribable-dataset/src/TransactionDataset.ts b/packages/subscribable-dataset/src/TransactionDataset.ts
index a4e1520..9e417c8 100644
--- a/packages/subscribable-dataset/src/TransactionDataset.ts
+++ b/packages/subscribable-dataset/src/TransactionDataset.ts
@@ -287,4 +287,17 @@ export class TransactionDataset<InAndOutQuad extends BaseQuad = BaseQuad>
   public getChanges(): DatasetChanges<InAndOutQuad> {
     return this.datasetChanges;
   }
+
+  /**
+   * Returns true if the transaction is holding changes that have yet to be committed.
+   * Returns false if no changes have yet been made to it.
+   */
+  public hasChanges(): boolean {
+    return (
+      ((this.datasetChanges.added && this.datasetChanges.added.size > 0) ||
+        (this.datasetChanges.removed &&
+          this.datasetChanges.removed.size > 0)) ??
+      false
+    );
+  }
 }
diff --git a/packages/subscribable-dataset/src/types.ts b/packages/subscribable-dataset/src/types.ts
index ce3d64d..bd40aef 100644
--- a/packages/subscribable-dataset/src/types.ts
+++ b/packages/subscribable-dataset/src/types.ts
@@ -166,4 +166,5 @@ export interface ITransactionDataset<InAndOutQuad extends BaseQuad = BaseQuad>
   rollback(): void;
   commit(): void;
   getChanges(): DatasetChanges<InAndOutQuad>;
+  hasChanges(): boolean;
 }