Prompt Engineering
& LLM Guides
Practical guides on writing better prompts, cutting token costs and building with LLM APIs, for ChatGPT, Claude and Gemini users.
Fix Node.js MaxListenersExceededWarning
Node's MaxListenersExceededWarning means a listener is piling up somewhere. Here's how to find and fix the real leak instead of raising the limit.
AI Prompt to Turn a Bug Report Into a Test
An AI prompt that turns a vague bug report into a reproducible failing test, so you fix the real cause instead of guessing and hoping it sticks.
console.log vs debugger in Node.js
console.log vs debugger in Node.js: when print debugging is fine, when breakpoints actually save you time, and the workflow I use on client projects.
React 'Maximum Update Depth Exceeded' Fix
Fix React's Maximum update depth exceeded error for good: the two real causes, render-time setState and unstable useEffect deps, with working code fixes.
Node.js Worker Threads for CPU-Heavy Tasks
Learn how Node.js worker threads move CPU-intensive tasks off the event loop, with a working Express example and when to pick them over clustering.
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