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⚡ Bolt: [performance improvement] Optimize fs.readFileSync Memory Allocation#28
⚡ Bolt: [performance improvement] Optimize fs.readFileSync Memory Allocation #28vishnu-madhavan-git wants to merge 1 commit into
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Replace `fs.readFileSync(...).toString()` with `fs.readFileSync(..., 'utf8')` in multiple packages to prevent intermediate Buffer allocations and improve memory usage and read performance. Co-authored-by: vishnu-madhavan-git <237662584+vishnu-madhavan-git@users.noreply.github.com>
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💡 What
Replaced usages of
fs.readFileSync(filepath).toString()withfs.readFileSync(filepath, 'utf8')across@expo/cli,@expo/config-plugins,expo-brownfield, andpod-install.🎯 Why
When
fs.readFileSyncis called without an encoding argument, it returns a rawBuffer. Calling.toString()on this buffer allocates a new string in memory and copies the data over. By directly passing'utf8'as the encoding tofs.readFileSync, Node.js decodes the file contents directly into a string, bypassing the intermediateBufferallocation, saving memory and reducing garbage collection overhead.📊 Impact
Minor but consistent memory and CPU usage improvements during CLI operations, project building, and templating where file reading happens synchronously, due to reduced memory allocation and garbage collection.
🔬 Measurement
No functional change, memory profiling on node scripts running these functions should show fewer
Bufferallocations.Passed
lintandtestsuites on modified packages (@expo/cli,@expo/config-plugins,expo-brownfield,pod-install).PR created automatically by Jules for task 209893582691112827 started by @vishnu-madhavan-git