Performance
Target · not measured
Technical specification
The Engine
The diagram shows a proposed architecture. The current demo stores simulated signals locally in IndexedDB; Service Worker and server sync are not active.
Lighthouse demo values
The displayed 100/100 scores are demo targets, not measured results. A Lighthouse test of the published site is still needed.
Accessibility
Target · not audited
Best Practices
Target · not audited
SEO
Target · not audited
Architecture diagram · data flow
HTML5 Browser APIs
Location data is simulated in this prototype; real browser sensors are not queried.
Service Worker interceptor
Proposed extension: a Service Worker could cache navigation and assets. Not active yet.
IndexedDB via Dexie.js
Every record is persisted locally in a transaction and flagged with a synced marker. The queue survives reloads, tab switches and app restarts.
Serverless Supabase endpoints
Proposed extension: server-side sync. For now, queued records are only marked as synced locally; no upload.
Specification in detail
Stack & budget
- Rendering
- SSR + hydration, file-based routing
- Persistence
- IndexedDB (Dexie.js) + LocalStorage
- JS budget
- Target, not measured
- Fonts
- self-hosted, variable subsets
- Images
- no raster assets on the critical path
- Interaction
- 0 ms transition and animation delay
Privacy by Design (GDPR)
- Third-party scripts
- none in demo code
- First-party cookies
- none in demo code
- Tracking / analytics
- not embedded
- External fonts
- not embedded
- Telemetry upload
- not implemented
- Telemetry storage
- device only