familysync/apps/pwa

@familysync/pwa

The React 19 PWA frontend for FamilySync. Delivers a single installable, low-friction interface showing the color-coded family calendar and shared collaborative lists, designed for a mixed Android/Apple household.

Part of the FamilySync monorepo.

Stack

Layer	Library	Version
UI framework	React	^19.0.0
Build + dev server	Vite	8.0.16
PWA service worker + manifest	vite-plugin-pwa	^1.3.0
Calendar widget	@schedule-x/calendar	4.6.0
Server state	@tanstack/react-query	5.101.0
UI state	zustand	5.0.14
Routing	react-router	^7.17.0
iCalendar parsing	ical.js	2.2.1
Drag-and-drop (lists)	@dnd-kit/core + @dnd-kit/sortable	^6 / ^10

Development

Run the PWA dev server from the monorepo root:

pnpm --filter @familysync/pwa dev

The API backend must also be running for most features. See GETTING-STARTED.md for full stack bring-up instructions.

Scripts

Command	What it does
pnpm --filter @familysync/pwa dev	Start Vite dev server (HMR)
pnpm --filter @familysync/pwa build	Type-check then build production bundle (tsc && vite build)
pnpm --filter @familysync/pwa preview	Serve the production build locally
pnpm --filter @familysync/pwa typecheck	Run tsc --noEmit without emitting files
pnpm --filter @familysync/pwa test	Run Vitest test suite once (vitest run)

Source layout

src/
  api/          # Typed fetch wrappers for @familysync/api (client.ts, listsClient.ts)
  components/   # Shared UI components co-located with their *.test.tsx files
  hooks/        # Custom React hooks (useListSSE, usePushSubscription, useFocusTrap)
  lib/          # Pure helpers: calendarConfig, colorUtils, eventDateTime, hydrateEvents, loginRedirect
  routes/       # React Router route components with co-located tests (ListDetail, ListsIndex)
  store/        # Zustand stores: calendarStore, listsStore
  styles/       # Global CSS
  main.tsx      # App entry point — React Query client, router, global error handlers
  App.tsx       # Root component
  sw.ts         # Workbox service worker entry
  test-setup.ts # Vitest + jest-dom global setup

Routes and their co-located components own the feature slice. Library code (pure, side-effect-free) lives in lib/. Zustand stores hold UI-only state; server data is exclusively managed by TanStack Query.

Communication with the API

All backend calls go through src/api/client.ts and src/api/listsClient.ts. Key behavior:

• credentials: 'include' on every request so the OIDC session cookie is forwarded.
• redirect: 'manual' — a 401 or opaque redirect (the Authelia 302) is caught and thrown as a typed SessionExpiredError. The global QueryCache / MutationCache error handler in main.tsx intercepts this and shows the session-expiry interstitial.
• Re-authentication requires a top-level navigation to /api/login (handled by src/lib/loginRedirect.ts), not a fetch redirect, because browsers block CORS redirects to an external IdP.
• Live list updates are delivered via SSE through src/hooks/useListSSE.ts; the hook calls queryClient.invalidateQueries on each event so TanStack Query re-fetches.

In development the Vite proxy routes /api requests to the API server on port 3000, keeping cookies same-site. In production both apps are served same-origin via the Pangolin/Newt tunnel.

Testing

Tests are co-located with their source files (*.test.tsx / *.test.ts) and use React Testing Library + @testing-library/jest-dom. The test environment is jsdom.

# run once
pnpm --filter @familysync/pwa test

# watch mode (during development)
pnpm --filter @familysync/pwa exec vitest

No coverage threshold is configured. Run pnpm --filter @familysync/pwa typecheck separately — Vitest uses esbuild and will not surface TypeScript errors.

PWA install notes

• The app must be added to the Home Screen on iOS for push notifications to work (iOS 16.4+ minimum).
• Push permission must be requested inside a tap handler; calling pushManager.subscribe() on page load is blocked.
• Background sync and background push are not supported on iOS; all push messages must display a visible notification.

Further reading

• Architecture overview
• Getting started
• Development guide
• Testing guide