From 9bf7d00e7e5d64608eaefd4f15a381722d1f3337 Mon Sep 17 00:00:00 2001
From: UtkarshUsername <putkarsh184@gmail.com>
Date: Fri, 30 Oct 2026 00:17:03 +0530
Subject: [PATCH] perf(web): compact changed-file directories once

---
 apps/web/src/lib/turnDiffTree.test.ts | 15 +++++++++++++++
 apps/web/src/lib/turnDiffTree.ts      |  9 +--------
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/apps/web/src/lib/turnDiffTree.test.ts b/apps/web/src/lib/turnDiffTree.test.ts
index 582dba9569a8a..bf792a803238c 100644
--- a/apps/web/src/lib/turnDiffTree.test.ts
+++ b/apps/web/src/lib/turnDiffTree.test.ts
@@ -87,6 +87,21 @@ describe("buildTurnDiffTree", () => {
   });
 
   it("compacts only single-directory chains and stops at branch points", () => {
+    expect(
+      buildTurnDiffTree([
+        { path: "src/a/b/first.ts", kind: "modified", additions: 1, deletions: 0 },
+        { path: "src/c/d/second.ts", kind: "modified", additions: 2, deletions: 0 },
+      ]),
+    ).toMatchObject([
+      {
+        name: "src",
+        children: [
+          { name: "a/b", path: "src/a/b", children: [{ name: "first.ts" }] },
+          { name: "c/d", path: "src/c/d", children: [{ name: "second.ts" }] },
+        ],
+      },
+    ]);
+
     const tree = buildTurnDiffTree([
       { path: "apps/server/src/index.ts", kind: "modified", additions: 2, deletions: 1 },
       { path: "apps/server/main.ts", kind: "modified", additions: 4, deletions: 0 },
diff --git a/apps/web/src/lib/turnDiffTree.ts b/apps/web/src/lib/turnDiffTree.ts
index 810a04755e895..004c552b771b8 100644
--- a/apps/web/src/lib/turnDiffTree.ts
+++ b/apps/web/src/lib/turnDiffTree.ts
@@ -56,14 +56,7 @@ function readStat(file: TurnDiffFileChange): TurnDiffStat | null {
 }
 
 function compactDirectoryNode(node: TurnDiffTreeDirectoryNode): TurnDiffTreeDirectoryNode {
-  const compactedChildren = node.children.map((child) =>
-    child.kind === "directory" ? compactDirectoryNode(child) : child,
-  );
-
-  let compactedNode: TurnDiffTreeDirectoryNode = {
-    ...node,
-    children: compactedChildren,
-  };
+  let compactedNode = node;
 
   while (compactedNode.children.length === 1 && compactedNode.children[0]?.kind === "directory") {
     const onlyChild = compactedNode.children[0];