📰 Dev.to · Diven Rastdus

TypeScript's most expensive gotcha: it checks types at compile time, but your data shows up at...

The biggest TypeScript change of 2026 isn't a new type. It's a new engine. The compiler got rewritten...

A free, open-source practice app for piano, guitar, and drums, built around a real prerequisite skill tree instead of gamified scoring.

TypeScript's types don't exist at runtime. The compiler deletes every interface and type annotation...

An agent's process state is not the world state. Why retrying a dead agent double-fires side effects, why success reports lie, and the reconcile-then-retry loop

I was doing a UI cleanup pass on our astrology companion app. One card said "Recurring themes are...

My CI pipeline was green. Unit tests passed. The APK built and signed without errors. I installed it...

I just finished building a hard paywall for my journaling app. Four onboarding slides, three pricing...

You built the landing page, wired up Stripe, launched. And then... silence. Zero purchases. Was the...

I shipped a no-op stub of PostHogProvider.tsx on April 20. I told myself I would come back to it that...

A real-world pattern for running platform billing and tenant billing side by side with Supabase auth, RLS, Stripe Checkout, and Stripe Connect.

Here's a pattern I keep running into: you have a batch of items (messages, tickets, documents,...

Two-Pass LLM Processing: When Single-Pass Classification Isn't Enough Here's a pattern I...

Most journal apps give you a blank page and wish you luck. I built one that reads what you write and turns the chaos into structure.

Single-pass LLM classification misses cross-item relationships. Here's how a two-pass pipeline catches escalation patterns, contradictions, and conflicts that n

How I built an interactive 3D globe showing real users at their locations. Next.js 16, three-globe, Supabase, and Nominatim geocoding.

The A2A Protocol: How Google Wants AI Agents to Talk to Each Other Google released the...

FHIR for Software Engineers (Not Just Healthcare Devs) FHIR (Fast Healthcare...

If your SaaS handles payments on behalf of users (marketplace, platform, agency tool), you need...

OAuth Token Vault Patterns for AI Agents AI agents that access third-party APIs on behalf...

Running AI agents in dev is fun. Running them in production is a different sport entirely. I spent...

OAuth Token Vault Patterns for AI Agents AI agents that call external APIs have a problem...

Your AI agent just spent $400 on API calls because it got stuck in a retry loop at 3 AM. Nobody was...

Most AI agent demos work perfectly. Most AI agent deployments fail within a week. I've shipped...