Buglyst Blog
Learn to debug under pressure.
Playbooks for fast pattern recognition, guides for the full investigation, and articles for the engineering judgment around the edges.
17 playbooks · 509 guides · 95 articles · 12 linked practice labs ·skip to practice
Fast pattern recognition for the production failures engineers see most often.
1 playbook in Languages & Runtime
Structured investigations for the failure modes engineers meet in real systems.
Pinpointing and Resolving TypeScript Type Errors in Complex Codebases
A detailed guide for engineers who need to systematically diagnose and resolve elusive TypeScript type errors in large, real-world projects.
Debugging UnhandledPromiseRejection in Node.js Applications
How to identify, isolate, and fix UnhandledPromiseRejection warnings in Node.js, with specific steps and sample incidents.
Diagnosing Silent Failures and Deadlocks in Python Asyncio
A precise engineering guide for tracking down deadlocks, silent failures, and missed awaits in Python asyncio — beyond the usual print debugging.
Node.js ESM/CommonJS Interop: require() of ES Module Fails
A focused guide on diagnosing and fixing the 'require() of ES Module' error when mixing module systems in Node.js.
Debugging Node.js Stream Backpressure: When HighWaterMark Betrays You
A practical guide to diagnosing and fixing backpressure failures in Node.js streams, covering highWaterMark tuning, drain events, and memory pressure.
Node.js Graceful Shutdown Not Completing: Debugging Dirty Handles and Stuck Timers
A direct, actionable guide for when process.exit() hangs or SIGTERM is ignored because of unclosed handles, active timers, or persistent connections.
Long-form thinking on debugging habits, observability, and the systems around the bug.