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. This guide is written for developers who ship fast and need production to stay stable.

Why this matters

Production environments are unforgiving. What works perfectly in development often fails in subtle ways when real users are involved — different browsers, slower connections, edge case data, and concurrent requests all expose weaknesses that never appeared locally.

Prerequisites

Before starting, make sure you have: a running production deployment, access to your application's codebase, and a ProdFix account (free tier works for this guide).

Step-by-step guide

Follow these steps carefully. Each step builds on the previous one, so don't skip ahead.

1. Assess your current setup — understand what you have before adding anything new
2. Install the required tools — one command, takes under a minute: npm install @prodfix/sdk
3. Configure for your environment — add your API key and project settings
4. Test in staging first — verify the setup catches errors before going to production
5. Deploy and verify — confirm you're seeing data in your dashboard within minutes

Common mistakes to avoid

• Skipping the staging verification step — you want to confirm it works before it matters
• Using the same API key across all environments — use separate keys for production and staging
• Not setting up alerts — data without alerts means you're still checking dashboards manually

What to do after setup

Once everything is in place, spend 10 minutes reviewing your current error baseline. The first view of production data is often surprising — you'll likely find errors you had no idea about. Prioritize by user impact and fix the top three issues first.