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 Frontend & Web
Structured investigations for the failure modes engineers meet in real systems.
Pinia Store State Not Persisting Across Page Reloads
Diagnosing and fixing issues when your Pinia store state resets on page reloads—even with plugins or localStorage configured.
Nuxt Build Fails: Module Not Found
Nuxt's build process can suddenly fail with 'module not found' errors even on identical code. This guide unpacks root causes beyond obvious missing packages.
Tracking Down Vue Prop Type Validation Warnings
How to identify, diagnose, and resolve Vue component prop type validation warnings—including why they happen, and what breaks if you ignore them.
Debugging Vue v-for 'Missing Key' Warnings in Templates
Learn how to resolve and prevent Vue's v-for 'missing key' warnings, why they matter, and how they affect rendering stability in real-world apps.
Vue Provide/Inject: Child Component Not Receiving Provided Value
Child components sometimes fail to receive values via Vue's provide/inject. This guide digs into real-world causes, diagnostics, and hard-won fixes.
Diagnosing Vue Async Component Loading Failures in Production
How to quickly debug and resolve Vue async component loading errors, from network failures to misconfigurations. Actionable steps for real-world codebases.
Long-form thinking on debugging habits, observability, and the systems around the bug.
Debugging Network Issues with Chrome DevTools: Timing, Waterfalls, and Hidden Columns
A practical guide to diagnosing slow requests, stalled connections, and caching bugs using the Network tab's non-obvious features.
Finding Jank in React Apps with Chrome DevTools Performance Tab
A practical walkthrough of the Performance tab for diagnosing frame drops and long tasks in React apps, with a real debugging story.
Debugging CSS Layout Issues: A Systematic Approach to Fixing Broken Layouts
A practical, step-by-step system for diagnosing and fixing CSS layout bugs — from overflow and collapsing margins to flexbox and grid misbehavior. Includes real DevTools workflows and a war story from production.
Debugging Accessibility Violations: A Systematic Approach from Audit to Fix
A practical guide to identifying, triaging, and fixing accessibility violations in web applications, covering automated tools, manual testing techniques, and common pitfalls.
Find the Real Cause of a Slow Page: A Profiling Protocol for Engineers
A practical protocol for profiling web page performance — not a list of metrics, but a repeatable process for finding what actually slows down your users.
Tracking Down Memory Leaks in Browser JavaScript: A Practical Field Guide
Memory leaks in the browser are subtle and hard to reproduce. This guide covers practical techniques to detect, isolate, and fix them using Chrome DevTools, heap snapshots, and allocation timelines.