The detection hierarchy
From fastest to slowest detection: (1) static analysis catches bugs before runtime, (2) tests catch bugs before deploy, (3) monitoring catches bugs immediately after deploy, (4) users catch bugs days after deploy. You want to maximize (1)-(3).
Layer 1: TypeScript
TypeScript catches entire categories of bugs at compile time: type mismatches, undefined property access, wrong function arguments. If you're writing plain JavaScript, switching to TypeScript is the highest-leverage investment.
Layer 2: Tests for critical paths
You don't need 100% test coverage. You need tests for: signup flow, payment flow, core feature happy path. These catch regressions before they hit users.
Layer 3: Error monitoring
Everything that slips past layers 1 and 2 gets caught here. ProdFix captures errors the moment they occur in production — before any user reports them. You get the full context needed to fix them immediately.
Layer 4: Proactive alerting
Don't wait to check the dashboard. Configure alerts so you're notified within minutes of a new error type. This closes the loop: error occurs → you're notified → you fix → most users never know it happened.
Stop flying blind in production.
ProdFix gives you error monitoring, performance tracking, security alerts, and AI-powered fixes — built for solo founders and vibe coders. One SDK, 2-minute setup.