Files
udyamlinc/public/sw.js
T
LincPayandClaude Opus 5 f430f85202 chore: initial commit — UdyamLinc UI, phases A-E
Vite/React 19 console and enterprise PWA. Officer console screens, offline
ledger and sync, data feeds and trip-wire rules screens with freshness chip.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-06 13:30:24 +05:30

55 lines
1.7 KiB
JavaScript

/*
* UdyamLinc service worker — app-shell precache + stale-while-revalidate.
*
* Scope of the offline promise (deck feature 7): the enterprise PWA must open,
* render and accept ledger entries with zero connectivity. Ledger writes are
* queued in localStorage by the app itself (see lib/ledgerStore.ts); this worker
* only guarantees the shell and its assets are reachable.
*/
const CACHE = 'udyamlinc-v1'
const SHELL = ['/', '/app', '/index.html', '/manifest.webmanifest', '/udyamlinc-tile.svg']
self.addEventListener('install', (event) => {
event.waitUntil(caches.open(CACHE).then((c) => c.addAll(SHELL)).then(() => self.skipWaiting()))
})
self.addEventListener('activate', (event) => {
event.waitUntil(
caches
.keys()
.then((keys) => Promise.all(keys.filter((k) => k !== CACHE).map((k) => caches.delete(k))))
.then(() => self.clients.claim()),
)
})
self.addEventListener('fetch', (event) => {
const req = event.request
if (req.method !== 'GET') return
const url = new URL(req.url)
// API calls are never served stale — the app falls back to its local store instead.
if (url.pathname.includes('/api/')) return
// Navigations: network first, fall back to the cached shell when offline.
if (req.mode === 'navigate') {
event.respondWith(fetch(req).catch(() => caches.match('/index.html')))
return
}
// Assets: cache first, refresh in the background.
event.respondWith(
caches.match(req).then((hit) => {
const network = fetch(req)
.then((res) => {
if (res.ok) {
const copy = res.clone()
caches.open(CACHE).then((c) => c.put(req, copy))
}
return res
})
.catch(() => hit)
return hit || network
}),
)
})