hotfix: allow for undefined oldData in websocket

aztlan-labs · Oct 9, 2024 · d9a0f7e · d9a0f7e
1 parent 2a6c05d
commit d9a0f7e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/services/explorer-ui/src/hooks/websocket.ts b/services/explorer-ui/src/hooks/websocket.ts
@@ -27,7 +27,8 @@ export const useWebSocketConnection = () => {
     const d = JSON.parse(data);
     const block = chicmozL2BlockSchema.parse(d);
     queryClient.setQueryData(["latestBlock"], block);
-    queryClient.setQueryData(["latestBlocks"], (oldData: ChicmozL2Block[]) => {
+    queryClient.setQueryData(["latestBlocks"], (oldData: ChicmozL2Block[] | undefined) => {
+      if (!oldData) return [block];
       if (oldData.find((b) => b.hash === block.hash)) return oldData;
       return [block, ...oldData];
     });