Hacker NewsBuilt a PWA where anyone can drop a pin on a live shared map to report nearby incidents — crime, fire, disasters, civil unrest, infrastructure failures.
No accounts, no tracking. IPs are one-way HMAC-hashed before storage and never logged raw. Community votes incidents from pending → active so noise gets filtered out automatically. Each category has its own TTL so the map stays fresh.
Stack: Next.js 16, Firebase (Firestore + Cloud Functions + FCM), Leaflet for the map, D3.js for a 3D globe view. Fully open source.
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