The ProdFix Blog

These are the React errors that hit real production apps most often. What they mean, why they happen, and how to fix them.

Uncaught TypeErrors are the most common JavaScript error in production. Here's what causes them, how to find them, and how to fix them permanently.

The most frequent Next.js errors that only appear in production — not in development. Causes, stack traces, and fixes.

"Works on my machine" is the hardest kind of bug to fix. Here's a systematic approach to diagnosing and fixing production-only bugs.

Unhandled promise rejections are silent production killers. Here's how to find, track, and permanently fix them in your JavaScript app.

Production stack traces point to minified code. Source maps fix that. Here's a plain-English explanation and setup guide for solo founders.

Most bugs are discovered by users, not developers. Here's a complete guide to error detection that puts you ahead of your users.

SvelteKit is a favorite among indie hackers for its speed and simplicity. Here are the production errors you'll hit and how to solve them.

Memory leaks in JavaScript are invisible until your app crashes. Here's how to detect and fix them in production.

TypeScript strict mode catches more bugs at compile time. Here's what it enables and why solo founders should use it.

Understanding every JavaScript error type: what causes them, how to catch them, and how to fix them in production.

The async/await error handling patterns that prevent silent failures in production JavaScript apps.

These React hooks mistakes look fine in development but create hard-to-debug bugs in production.

Comprehensive error handling for Node.js APIs: uncaught exceptions, unhandled rejections, graceful shutdown.

Webpack production builds fail in ways dev builds don't. These are the most common errors and their fixes.

CORS errors in production are different from local. Here's how to debug them systematically and fix them permanently.

Suspense and Error Boundaries together create resilient React apps. Here's the production-safe setup.

How to profile JavaScript performance in production when you can't use Chrome DevTools on a real user's browser.

TypeScript catches type errors at compile time. Zod catches them at runtime. Together they eliminate a whole class of bugs.

Event loop issues are impossible to reproduce locally. Here's how they manifest in production and how to fix them.

Vite dev server hides many issues that surface in production builds. These are the most common and their fixes.

An honest comparison of Sentry and ProdFix for solo founders and small teams. Features, pricing, and MCP integration.

Third-party scripts (analytics, chat, ads) throw errors that affect your error rate. Here's how to handle them.

RSC errors are different from client-side React errors. Here's what changes and how to monitor them effectively.