advanced

Keep the heavy reference tucked away

These are the details that are useful, but not worth putting in the main reading path.

Eidos (@sweidos/eidos) — Never lose a write Eidos is an offline-first abstraction layer for web apps. Declare what your app needs offline — Eidos picks the cache strategy, registers the Service Worker, and persists your action queue to IndexedDB with idempotency keys and cross-tab replay locks, so a queued write runs exactly once. Install: npm install @sweidos/eidos

Works with React, Next.js, SvelteKit, Vue, React Native, Tauri, and Electron

Auto-generates Service Worker and cache strategies from resource() declarations

Offline action queue with idempotency keys and cross-tab replay locks

Zero config — no service worker file to write

npm: @sweidos/eidos · GitHub: sweidos/eidos