·7 min read
Your fetch timeout starts before the request does
AbortSignal.timeout() starts counting when you create it, not when fetch runs. In a queue or retry loop it quietly kills requests still waiting their turn.
❯grep -rl "#javascript" ./posts
#javascript
9 posts
·11 min read
How to catch every uncaught error in a Next.js app, including the ones window.onerror silently misses
window.onerror is the answer everyone gives. It never fires for a broken image, and the next library that loads can delete yours. Here is what to use instead, on the client and on the server, tested in a real browser.
·10 min read
Why JSON.stringify(error) prints {} in your logs, and how to actually log an Error properly
Error objects have non-enumerable fields, so a logger that just JSON.stringify's them prints an empty object. Here's why, and a serializer that captures message, stack, cause chains, and AggregateErrors properly.
·6 min read
How to auto-generate and publish blog posts with a GitHub Action
A content queue, a Node generator script that calls the Claude API, and a scheduled GitHub Action that writes a post and commits it — the exact autopilot I use to keep this blog fed.
·5 min read
How to get structured JSON output from the Claude API
Use @anthropic-ai/sdk with a JSON schema so Claude returns validated, machine-readable data instead of free text — the exact pattern that powers this blog's auto-post generator.
·4 min read
How to add touch-swipe navigation in React
Add left/right swipe navigation to a React slideshow using touchstart and touchend, a distance threshold to ignore accidental taps, and simple direction detection.
·4 min read
How to debounce wheel scrolling so one flick advances one panel
A mouse wheel fires dozens of events per flick. Learn how to use a ref-based lock plus a timeout so one scroll gesture advances exactly one panel in a React slideshow.
·6 min read
How to build an image, SVG, and code lightbox with zoom and keyboard support
A small, dependency-free lightbox that opens images, diagrams, and code full-screen with zoom, drag-to-pan, and keyboard controls. Here's the real client-side logic, piece by piece.
·5 min read
How to write a custom remark plugin to add reading time in Astro
Build a tiny remark plugin that counts the words in a Markdown post and exposes a '4 min read' estimate on Astro's frontmatter — grounded in real, working code.