nodejs-expert

Debug Node.js event loop stalls and memory leaks by running diagnostic analysis to identify delays, memory usage patterns, and startup bottlenecks, then applying deterministic playbooks and concrete fixes for async patterns and server issues.

Node.js server hangs during graceful shutdown occur when process management logic fails to resolve async patterns or close streams properly. Diagnostic analysis identifies the stalled async operations and provides concrete fixes for clean process termination.

Yes, performance tuning applies to Node.js backend services across frameworks like Fastify, Express, and Koa. Environment detection checks framework presence, Node version, and package manager to provide framework-aware diagnostics and optimization guidance.

Optimize Node.js startup bottlenecks by analyzing module resolution and filesystem handling to identify slow imports and blocking operations. Diagnostic playbooks provide concrete fixes for module systems and packaging to reduce initialization time.

Handle async promise debugging in Node.js CLI tools by tracing unresolved promises and event loop delays. Diagnostic analysis identifies async pattern failures and provides deterministic code-review guidance for small CLI tools and backend services.

Yes, environment detection identifies the module type and provides module resolution guidance for both CommonJS and ES module systems. Diagnostic playbooks adapt to the detected package manager and module configuration to resolve packaging issues.