SvelteKit + Cloudflare Pages Library Test Template

🚨 CRITICAL: Many popular libraries cause SILENT HYDRATION FAILURE on Cloudflare Pages. This framework helps you test libraries BEFORE deploying broken apps to production.

The Problem

Libraries like lucide-svelte can cause your SvelteKit app to:

• ❌ Look perfect but be completely non-interactive
• ❌ Fail silently with NO error messages
• ❌ Work locally but break on Cloudflare Pages
• ❌ Leave users with a dead app

Quick Start

# Clone this template
git clone https://github.com/yourusername/sveltekit-cf-lib-test-template
cd sveltekit-cf-lib-test-template

# Install dependencies
npm install

# Test a library
npm run test:library lucide-svelte

Testing Your Libraries

1. Run the test:

   ./scripts/test-library.sh your-library-name
   

2. Check results:

   • 🟢 SAFE - Use without worry
   • 🟡 CONDITIONAL - Requires specific setup
   • 🔴 BROKEN - DO NOT USE

3. View detailed results in the console output

Known Library Status

Full database: docs/LIBRARY_DATABASE.md

Add Hydration Monitoring to Your App

Protect your production app:

<!-- Add to your app.html -->
<script>
  setTimeout(() => {
    if (typeof window.__SVELTEKIT__ === 'undefined') {
      // Alert your monitoring service
      console.error('🚨 HYDRATION FAILED! App is broken!');
    }
  }, 5000);
</script>

Contributing

1. Test your libraries using this template
2. Add results to docs/LIBRARY_DATABASE.md
3. Submit a PR
4. Help save other developers from silent failures!

The Full Story

Read about the 12-hour debugging journey: blog/cloudflare-sveltekit-hydration-guide.md

License

MIT - Help the community avoid broken production apps!