⚡ Bolt: [performance improvement] Avoid intermediate Buffer allocations when reading files

[vishnu-madhavan-git]

💡 What
Replaced instances of fs.readFileSync(filepath).toString() with fs.readFileSync(filepath, 'utf8') in packages/@expo/config-plugins and packages/@expo/cli.

🎯 Why
When reading text files synchronously, fs.readFileSync returns a Buffer by default. Calling .toString() on that Buffer creates an intermediate object in memory before converting it to a string. By passing 'utf8' directly to fs.readFileSync, Node.js skips creating the intermediate Buffer and returns the string directly, reducing memory allocations and garbage collection overhead. This is especially helpful in packages/@expo/config-plugins/src/android/Package.ts where it processes multiple files in a loop.

📊 Impact

• Reduces memory footprint during build and config generation commands.
• Slightly faster execution due to less garbage collection pressure.

🔬 Measurement
Verify that the CLI and config-plugins tests continue to pass. The memory impact is minimal per-file but scales with the number of processed files in a project.

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PR created automatically by Jules for task 5025195328411783201 started by @vishnu-madhavan-git

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Project	Deployment	Actions	Updated (UTC)
nexlyn	Error		Apr 12, 2026 8:01am

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