never loses data
Offline mutations queue and replay automatically. IDB-backed durability guarantees.
better-pwa
better-pwa is to PWAs what React Query is to server state — but for the entire app lifecycle.
npm install @better-pwa/core
What you get
never breaks on update
Background service worker swaps with zero session interruption.
never desyncs across tabs
Single source of truth via BroadcastChannel. Leader election, deduplication.
never silently fails permissions
Batched, retried, with fallback UI hooks. Exponential backoff.
One line. Everything works.
import { createPwa } from "@better-pwa/core"
createPwa({ preset: "saas" })
That one line sets up a service worker, manifest, state engine, offline queue, update lifecycle, multi-tab sync, and permission system. The preset made 100 configuration decisions for you.
Presets: 100 decisions → 1 decision
saas
Dashboards, CRMs, admin panels.
updateStrategy: "soft"
ecommerce
Cart persistence, checkout sync.
updateStrategy: "on-reload"
offline-first
Field apps, spotty connectivity.
conflictResolution: "merge"
content
Blogs, media, reading apps.
permissionBehavior: "manual"
Runtime Guarantees
These aren't best practices. They are enforced invariants with runtime violation detection.
| Guarantee | What it means |
|---|---|
| Data Durability | User actions are never lost — offline or online |
| Update Safety | No broken sessions during deployments |
| Cross-Tab Consistency | One state everywhere, no stale tabs |
| Permission Resilience | Every denial has a recovery path |
| Cold Start Integrity | Deterministic boot regardless of cache state |
| Schema Evolution | State migrations prevent data loss on version upgrades |
| Resource Prioritization | Critical resources always synced before non-critical |