The ProdFix Blog

Production guides for solo founders, vibe coders, and indie hackers. Ship faster. Break less.

Traditional tools ProdFix ✗ Team-focused pricing ✗ Complex setup ✗ No AI fix suggestions ✗ No MCP integration ✗ Separate UX tool needed ✗ Separate perf tool needed ✗ Multiple dashboards ✓ Solo founder pricing ✓ 2-min setup ✓ AI fix suggestions ✓ Cursor + Claude MCP ✓ UX built-in ✓ Performance built-in ✓ One dashboard $26+/user/month Free · $13/mo starter
Indie Hacker
Open Source Monitoring for Indie Hackers: What's Worth It
Self-hosted monitoring sounds cheaper but has hidden costs. Here's the honest comparison for indie hackers.
2025-04-22 · 5 min read
Error rate over time last 30 days · errors per 1000 sessions ↑ deploy without monitoring ↓ ProdFix installed errors caught fast — actual - - trend · prodfix.com
Indie Hacker
SaaS Churn: The Technical Root Causes Nobody Talks About
Churn isn't just a business problem. Often it's a technical one. Here's the monitoring data that reveals the truth.
2025-04-22 · 6 min read
⚠ New Error Detected TypeError: Cannot read properties of undefined Checkout.jsx:47 · 5 users · 2 min ago View in IDE → Dismiss Alert via 📧 Email · Slack within 60 seconds Fix via Cursor + MCP avg 4 min to fix
Indie Hacker
How Indie Hackers Should Communicate During Outages
How you communicate during an outage determines if users stay or leave. Here's the communication playbook.
2025-04-22 · 5 min read
✓ Deploy successful 0 new errors · 2m ago Error rate: 0.02% ▼ 80% from last week LCP: 1.2s P75 · Good ✓ Active users: 142 ↑ Product Hunt day prodfix · ship fast · stay stable · solo founder monitoring
Indie Hacker
Cheap CDN Setup for Indie SaaS: Fast Globally for $5/month
A global CDN for $5/month changes your international performance metrics. Here's the setup.
2025-04-23 · 5 min read
prodfix ● All Projects ○ Issues ○ Performance ○ Security ○ UX All Projects 98.7% uptime this month 3 open issues 1.4s avg LCP ● main-saas 142 errors · 23 open · LCP 1.8s critical ● side-project-2 8 errors · 1 open · LCP 2.1s warn ● chrome-ext 0 errors · all clear · LCP 0.9s good
Indie Hacker
Privacy-First Analytics Setup for Indie SaaS (GDPR Compliant)
Analytics that respect user privacy and comply with GDPR. The tools and setup for indie SaaS.
2025-04-23 · 5 min read
Error rate over time last 30 days · errors per 1000 sessions ↑ deploy without monitoring ↓ ProdFix installed errors caught fast — actual - - trend · prodfix.com
Indie Hacker
Technical Setup for SaaS Win-Back Campaigns
Win-back campaigns require the right technical triggers. Here's how to use error data to identify reactivation candidates.
2025-04-23 · 5 min read
error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
JavaScript
JavaScript Memory Leak Detection: How to Find and Fix Them in Production
Memory leaks in JavaScript are invisible until your app crashes. Here's how to detect and fix them in production.
2025-04-18 · 7 min read
prodfix — terminal npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events _
JavaScript
TypeScript Strict Mode: Why You Need It Before Launch
TypeScript strict mode catches more bugs at compile time. Here's what it enables and why solo founders should use it.
2025-04-18 · 5 min read
error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
JavaScript
JavaScript Error Types: The Complete Guide (TypeError, ReferenceError, SyntaxError...)
Understanding every JavaScript error type: what causes them, how to catch them, and how to fix them in production.
2025-04-18 · 7 min read
prodfix — terminal npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events _
JavaScript
Async/Await Error Handling Patterns That Actually Work in Production
The async/await error handling patterns that prevent silent failures in production JavaScript apps.
2025-04-19 · 6 min read
error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
JavaScript
10 React Hooks Mistakes That Cause Production Bugs
These React hooks mistakes look fine in development but create hard-to-debug bugs in production.
2025-04-19 · 6 min read
prodfix — terminal npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events _
JavaScript
Node.js Error Handling Guide for Production APIs
Comprehensive error handling for Node.js APIs: uncaught exceptions, unhandled rejections, graceful shutdown.
2025-04-19 · 6 min read
error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
JavaScript
Webpack Bundle Errors in Production: Common Causes and Fixes
Webpack production builds fail in ways dev builds don't. These are the most common errors and their fixes.
2025-04-19 · 5 min read
prodfix — terminal npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events _
JavaScript
How to Debug CORS Errors in Production
CORS errors in production are different from local. Here's how to debug them systematically and fix them permanently.
2025-04-20 · 5 min read
prodfix — terminal npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events _
JavaScript
React Suspense and Error Boundaries: Production-Safe Setup
Suspense and Error Boundaries together create resilient React apps. Here's the production-safe setup.
2025-04-20 · 6 min read
Error rate over time last 30 days · errors per 1000 sessions ↑ deploy without monitoring ↓ ProdFix installed errors caught fast — actual - - trend · prodfix.com
JavaScript
JavaScript Performance Profiling in Production (Without Chrome DevTools)
How to profile JavaScript performance in production when you can't use Chrome DevTools on a real user's browser.
2025-04-20 · 6 min read
✓ CSP headers script-src configured ✓ Auth tokens httpOnly cookies ✗ Rate limiting missing on /api/login ✓ HTTPS enforced HSTS + redirect ✗ SQL injection raw query at /search ✓ Input validation all endpoints prodfix · vibe coding safely · security monitoring
JavaScript
TypeScript + Zod: Runtime Validation That Catches Production Bugs
TypeScript catches type errors at compile time. Zod catches them at runtime. Together they eliminate a whole class of bugs.
2025-04-20 · 5 min read
error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
JavaScript
Event Loop Bugs in JavaScript: How They Appear in Production
Event loop issues are impossible to reproduce locally. Here's how they manifest in production and how to fix them.
2025-04-21 · 6 min read
prodfix — terminal npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events _
JavaScript
Vite Production Build Errors: Common Issues and Solutions
Vite dev server hides many issues that surface in production builds. These are the most common and their fixes.
2025-04-21 · 5 min read
Traditional tools ProdFix ✗ Team-focused pricing ✗ Complex setup ✗ No AI fix suggestions ✗ No MCP integration ✗ Separate UX tool needed ✗ Separate perf tool needed ✗ Multiple dashboards ✓ Solo founder pricing ✓ 2-min setup ✓ AI fix suggestions ✓ Cursor + Claude MCP ✓ UX built-in ✓ Performance built-in ✓ One dashboard $26+/user/month Free · $13/mo starter
JavaScript
Sentry vs ProdFix: Which Error Monitoring Tool Is Right for You?
An honest comparison of Sentry and ProdFix for solo founders and small teams. Features, pricing, and MCP integration.
2025-04-21 · 5 min read
error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
JavaScript
How to Handle Third-Party Script Errors Without Breaking Your App
Third-party scripts (analytics, chat, ads) throw errors that affect your error rate. Here's how to handle them.
2025-04-21 · 5 min read
error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
JavaScript
React Server Components Errors: What's Different in Production
RSC errors are different from client-side React errors. Here's what changes and how to monitor them effectively.
2025-04-22 · 6 min read
prodfix — terminal npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events _
JavaScript
Debugging JavaScript Web Worker Errors in Production
Web Worker errors don't surface in normal error monitoring. Here's how to capture and debug them.
2025-04-22 · 5 min read
error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
JavaScript
TypeScript Declaration Errors That Cause Runtime Failures
Some TypeScript errors only become visible at runtime. These are the patterns that trip up even experienced TS developers.
2025-04-22 · 5 min read