[Task] Release Quality Checklist — DBR JS Demo #5
Description
Description
Pre-release quality gate checklist for the DBR JS demo site. Must be verified before each release ships. All items should pass; blockers must be resolved, warnings triaged and linked to a follow-up issue.
Checklist
⚡ Initialization & Performance
- SDK initialization time ≤ 3 s on desktop (Chrome, Edge) — measured from page load to scanner ready event
- SDK initialization time ≤ 5 s on mobile (iOS Safari, Android Chrome) — same measurement
- Time to first decode ≤ 2 s after camera starts (using standard test barcode set)
- JS bundle size — no regression > 5% vs previous release (check with
npm run build+ bundle size report) - Memory usage — no visible memory growth after 5 min of continuous scanning (Chrome DevTools heap snapshot)
- Core Web Vitals — LCP < 2.5 s, TBT < 300 ms on simulated 4G (Lighthouse)
🌐 Browser & Device Compatibility
- Chrome (latest stable) — desktop
- Edge (latest stable) — desktop
- Safari (latest stable) — macOS
- Firefox (latest stable) — desktop
- Safari — iOS 16+ (iPhone)
- Chrome — Android 10+ (mid-range device)
- Samsung Internet (latest) — Android
📷 Camera & Permission Flow
- Camera permission prompt appears correctly on first visit
- Graceful error message shown when camera is denied
- Camera switch (front/back) works on mobile
- Camera stream stops cleanly when navigating away or closing scanner
🔖 Barcode Format Coverage
- QR Code
- Code 128 / Code 39 / Code 93
- EAN-13 / EAN-8 / UPC-A / UPC-E
- PDF417
- DataMatrix
- Aztec
- Any formats newly added or changed in this release
🖼 UI & Visual
- Scan overlay boxes align accurately with detected barcodes
- No layout regressions on desktop (1280 × 800) and mobile (375 × 812)
- Result panel displays decoded text, symbology, and confidence correctly
- Settings panel: all toggles (resolution, format, scan mode) work and persist
🧹 Code Quality
- Zero console errors in production build
- Zero console warnings related to deprecated DBR JS APIs
- No broken links
🔑 License & SDK Version
- Demo uses the intended SDK version (verify
package.json/ lock file) - Trial license is valid and not expired for the build
- License expiry shows a graceful UI message (no raw error thrown)
- Version number displayed on page (if applicable) matches release
♿ Accessibility
- Page passes Lighthouse accessibility score ≥ 85
- Scanner UI has appropriate ARIA labels and keyboard fallback messaging
Definition of Done
All items checked. Any unchecked items have a documented reason and a linked follow-up issue.
Notes
Update this checklist as the demo gains new features or target browsers change.