From 84ad73cad84db9b339ac70e6b248fe2bbdb2f16e Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Thu, 9 Apr 2026 08:09:11 +0000
Subject: [PATCH] perf: optimize readFileSync calls by passing utf8 encoding
 directly

- Replaced `readFileSync(...).toString()` with `readFileSync(..., 'utf8')` in `packages/pod-install/src/index.ts` and `packages/expo-brownfield/plugin/src/common/filesystem.ts`.
- This avoids unnecessary intermediate memory allocations for buffers before converting to strings.

Co-authored-by: vishnu-madhavan-git <237662584+vishnu-madhavan-git@users.noreply.github.com>
---
 .jules/bolt.md                                        |  0
 .../expo-brownfield/plugin/src/common/filesystem.ts   | 11 +++++++----
 packages/pod-install/src/index.ts                     |  3 ++-
 3 files changed, 9 insertions(+), 5 deletions(-)
 create mode 100644 .jules/bolt.md

diff --git a/.jules/bolt.md b/.jules/bolt.md
new file mode 100644
index 00000000000000..e69de29bb2d1d6
diff --git a/packages/expo-brownfield/plugin/src/common/filesystem.ts b/packages/expo-brownfield/plugin/src/common/filesystem.ts
index dfbcceaeb05b2d..ef944baad6a851 100644
--- a/packages/expo-brownfield/plugin/src/common/filesystem.ts
+++ b/packages/expo-brownfield/plugin/src/common/filesystem.ts
@@ -25,14 +25,16 @@ const interpolateVariables = (str: string, variables: Record<string, unknown>):
 const maybeReadOverwrittenTemplate = (template: string, platform?: PlatformString): string => {
   try {
     accessSync(path.join(process.cwd(), '.brownfield-templates'));
+    // ⚡ Bolt Optimization: Pass 'utf8' encoding directly to avoid unnecessary intermediate buffer allocation
     if (existsSync(path.join(process.cwd(), '.brownfield-templates', template))) {
-      return readFileSync(path.join(process.cwd(), '.brownfield-templates', template)).toString();
+      return readFileSync(path.join(process.cwd(), '.brownfield-templates', template), 'utf8');
     }
 
     if (existsSync(path.join(process.cwd(), '.brownfield-templates', platform ?? '.', template))) {
       return readFileSync(
-        path.join(process.cwd(), '.brownfield-templates', platform ?? '.', template)
-      ).toString();
+        path.join(process.cwd(), '.brownfield-templates', platform ?? '.', template),
+        'utf8'
+      );
     }
     // eslint-disable-next-line no-empty
   } catch {}
@@ -55,7 +57,8 @@ const readTemplate = (template: string, platform?: PlatformString): string => {
     throw new Error(`Template ${template} doesn't exist at ${templatePath}`);
   }
 
-  return readFileSync(templatePath).toString();
+  // ⚡ Bolt Optimization: Pass 'utf8' encoding directly to avoid unnecessary intermediate buffer allocation
+  return readFileSync(templatePath, 'utf8');
 };
 
 const createFileFromTemplateInternal = (
diff --git a/packages/pod-install/src/index.ts b/packages/pod-install/src/index.ts
index 15184c3f113372..80a7aa50efdec5 100644
--- a/packages/pod-install/src/index.ts
+++ b/packages/pod-install/src/index.ts
@@ -41,7 +41,8 @@ async function runAsync(maybeProjectDirectory?: string): Promise<void> {
       process.exit(1);
     }
 
-    const jsonData = JSON.parse(readFileSync(packageJsonPath).toString());
+    // ⚡ Bolt Optimization: Use 'utf8' encoding directly in readFileSync to avoid unnecessary memory allocation for the intermediate buffer
+    const jsonData = JSON.parse(readFileSync(packageJsonPath, 'utf8'));
     const hasExpoPackage = jsonData.dependencies?.hasOwnProperty('expo');
 
     if (hasExpoPackage) {