From 1056722f8c1727d6d9e19c887fd9a742f811c7bb Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Fri, 15 May 2026 10:50:45 +0000
Subject: [PATCH] =?UTF-8?q?=E2=9A=A1=20[Performance]=20Eliminate=20concurr?=
 =?UTF-8?q?ent=20IPC=20map-promise-all=20in=20hostBridge=20cell=20batch=20?=
 =?UTF-8?q?updates?=
MIME-Version: 1.0
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Refactored the `updateCellBatch` in `src/hostBridge.ts` to replace the parallel `Promise.all` fallback with a sequential execution loop. Retained the capability check for backward compatibility with older extensions that do not support batching, but pre-processed updates to ensure `tryGeneratePatch` JSON payload optimizations are still executed.
---
 src/hostBridge.ts | 27 ++++++++++++++++++++-------
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/src/hostBridge.ts b/src/hostBridge.ts
index d65b64c..a8813ce 100644
--- a/src/hostBridge.ts
+++ b/src/hostBridge.ts
@@ -382,23 +382,36 @@ export class HostBridge implements ToastService {
       throw new Error("Document is read-only");
     }
 
+    // Ensure all updates try to generate patches for efficiency
+    const processedUpdates = updates.map(update => {
+      if (update.operation !== 'json_patch') {
+        const patch = this.tryGeneratePatch(update.value, update.originalValue);
+        if (patch) {
+          return {
+            ...update,
+            operation: 'json_patch' as const,
+            value: patch
+          };
+        }
+      }
+      return update;
+    });
+
     if ('updateCellBatch' in dbOps) {
-      await dbOps.updateCellBatch(table, updates);
+      await dbOps.updateCellBatch(table, processedUpdates);
     } else {
-      // Fallback: execute updates in parallel
-      await Promise.all(updates.map(async update => {
+      // Fallback: execute updates sequentially to avoid IPC overload and N+1 concurrency
+      for (const update of processedUpdates) {
         let patch: string | undefined;
         let val = update.value;
 
         if (update.operation === 'json_patch') {
           patch = update.value as string;
-          val = null; // Value is ignored when patch is provided
-        } else {
-          patch = this.tryGeneratePatch(update.value, update.originalValue);
+          val = null;
         }
 
         await dbOps.updateCell(table, update.rowId, update.column, val, patch);
-      }));
+      }
     }
 
     // Fire batch edit event