⚡ [optimize saveConfig to use asynchronous I/O]#106
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- Replace synchronous `fs` methods with `fs.promises` in `lib/config.js`. - Refactor `saveConfig`, `loadConfig`, `saveTokenCache`, `loadTokenCache`, `clearTokenCache`, and `migrateOldConfig` to be fully asynchronous. - Ensure secure file permissions (0o600) and directory permissions (0o700) are maintained using `fs.promises.chmod` and `mkdirp` modes. - Update `tests/config.test.js` to support and verify asynchronous file operations. - Improve event loop responsiveness by avoiding blocking I/O in the CLI's async flows. Co-authored-by: cmuench <211294+cmuench@users.noreply.github.com>
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- Replace synchronous `fs` methods with `fs.promises` in `lib/config.js`. - Refactor `saveConfig`, `loadConfig`, `saveTokenCache`, `loadTokenCache`, `clearTokenCache`, and `migrateOldConfig` to be fully asynchronous. - Ensure secure file permissions (0o600) and directory permissions (0o700) are maintained using `fs.promises.chmod` and `mkdirp` modes. - Update `tests/config.test.js` to support and verify asynchronous file operations. - Verified branch is up to date with origin/main. Co-authored-by: cmuench <211294+cmuench@users.noreply.github.com>
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⚡ Performance Optimization: Asynchronous Configuration Saving
💡 What:
Replaced synchronous file system operations in
lib/config.jswith their asynchronous counterparts using thefs.promisesAPI. This affects configuration loading/saving, token cache management, and old configuration migration.🎯 Why:
The
saveConfigand related functions were already marked asasync, yet they utilized blocking synchronous calls (e.g.,fs.writeFileSync,fs.readFileSync). This blocks the Node.js event loop during I/O operations. Transitioning tofs.promisesensures that the CLI remains responsive and follows Node.js best practices for non-blocking I/O.📊 Measured Improvement:
While sequential benchmarks for small file writes (e.g., 100 calls to
saveConfig) showed a slight overhead (~98ms baseline vs ~110-120ms optimized), the primary benefit is the elimination of event loop blocking. This is particularly important for maintaining responsiveness in a CLI environment that handles multiple asynchronous tasks.✅ Verification:
tests/config.test.jswas updated to mockfs.promisesand verify that the correct asynchronous methods are invoked with appropriate parameters.tests/security.test.js.PR created automatically by Jules for task 7143591505039929346 started by @cmuench