⚡ Bolt: [performance improvement] Avoid intermediate buffer allocations in fs reads#44
⚡ Bolt: [performance improvement] Avoid intermediate buffer allocations in fs reads#44vishnu-madhavan-git wants to merge 1 commit intomainfrom
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💡 What Replaced usages of `fs.readFileSync(path).toString()` and `fs.readFile(path).toString()` with `fs.readFileSync(path, 'utf8')` and `fs.readFile(path, 'utf8')` across various packages (e.g., `@expo/cli`, `@expo/config-plugins`, `expo-modules-autolinking`). 🎯 Why When reading files in Node.js, calling `.toString()` on the returned `Buffer` allocates an intermediate `Buffer` object before converting it to a V8 string, which adds unnecessary memory allocation and garbage collection overhead. By explicitly providing the `'utf8'` encoding flag to the `fs` methods, Node.js bypasses the intermediate `Buffer` and streams the file contents directly into a V8 string. 📊 Impact Reduces memory allocations and GC overhead when reading text-based source files and configurations during build and development processes. 🔬 Measurement Measure heap memory allocation profiles when performing operations that read many files, such as resolving dependencies in `expo-modules-autolinking` or reading configs in `@expo/cli`. Co-authored-by: vishnu-madhavan-git <237662584+vishnu-madhavan-git@users.noreply.github.com>
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💡 What
Replaced usages of
fs.readFileSync(path).toString()andfs.readFile(path).toString()withfs.readFileSync(path, 'utf8')andfs.readFile(path, 'utf8')across various packages (e.g.,@expo/cli,@expo/config-plugins,expo-modules-autolinking).🎯 Why
When reading files in Node.js, calling
.toString()on the returnedBufferallocates an intermediateBufferobject before converting it to a V8 string, which adds unnecessary memory allocation and garbage collection overhead. By explicitly providing the'utf8'encoding flag to thefsmethods, Node.js bypasses the intermediateBufferand streams the file contents directly into a V8 string.📊 Impact
Reduces memory allocations and GC overhead when reading text-based source files and configurations during build and development processes.
🔬 Measurement
Measure heap memory allocation profiles when performing operations that read many files, such as resolving dependencies in
expo-modules-autolinkingor reading configs in@expo/cli.PR created automatically by Jules for task 1031216766557528880 started by @vishnu-madhavan-git