avoid null issue

districtr · Nov 11, 2024 · b609f3b · b609f3b
1 parent 11ad326
commit b609f3b
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/app/src/app/store/mapStore.ts b/app/src/app/store/mapStore.ts
@@ -382,6 +382,7 @@ export const useMapStore = create(
     ),
     {
       diff: (pastState: Partial<MapStore>, currentState: Partial<MapStore>) => {
+        if (!currentState.zoneAssignments || !pastState.zoneAssignments) return pastState;
         currentState.zoneAssignments.keys().forEach((geoid) => {
           if (!pastState.zoneAssignments.has(geoid)) {
             pastState.zoneAssignments.set(geoid, null);