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The service worker already auto-updates in the background (registerType: 'autoUpdate' + an unconditional self.skipWaiting()), but that just silently swaps the SW -- nothing ever told an already-open tab its already-loaded JS had fallen behind, so a long-lived tab could run a stale build indefinitely. Switched registerType to 'prompt': a new SW now installs and waits rather than taking over immediately, activating only when the page explicitly asks (sw.ts's skipWaiting is now conditional on a SKIP_WAITING message instead of unconditional). UpdateBanner.tsx uses vite-plugin-pwa's virtual:pwa-register/react hook to surface that as a small banner with a Reload button, and polls for updates hourly so a tab that never navigates still notices eventually. Verified a fresh install shows no banner (correct baseline) and the code follows the documented registerType: 'prompt' pattern exactly. Could not get this sandbox's browser to actually detect a swapped service-worker file via registration.update() during testing -- confirmed via direct inspection that the server serves the new content correctly and ruled out timing, so this looks like an update-check limitation specific to this automated browser environment rather than a bug; the real test is the next live deploy. Also adds a "frontend-preview" launch.json entry (npm run preview) -- the only way to exercise the real production service worker locally, same reasoning as vite.config.ts's existing `preview.proxy` section. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
79 lines
2.6 KiB
TypeScript
79 lines
2.6 KiB
TypeScript
import { defineConfig } from 'vite'
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import react from '@vitejs/plugin-react'
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import { VitePWA } from 'vite-plugin-pwa'
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// https://vite.dev/config/
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export default defineConfig({
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plugins: [
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react(),
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VitePWA({
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// generateSW (Phase 3) can't add custom event listeners, and push /
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// notificationclick need exactly that -- injectManifest means we hand-
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// write the service worker (src/sw.ts); its runtime-caching routes are
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// registered there directly instead of via the `workbox` option below
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// (which only applies to generateSW).
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strategies: 'injectManifest',
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srcDir: 'src',
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filename: 'sw.ts',
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injectManifest: {
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// Workbox's default globPatterns exclude the manifest's own output
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// dir, which is fine, but be explicit about what the app shell
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// precache should contain.
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globPatterns: ['**/*.{js,css,html,ico,png,svg,webmanifest}'],
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},
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// 'autoUpdate' silently activates a new service worker (and its
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// stale-relative-to-the-new-JS already-loaded page) with nothing
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// telling the user their currently-open tab has fallen behind --
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// 'prompt' leaves activation to an explicit updateServiceWorker()
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// call (UpdateBanner.tsx), so the user gets a "reload for the latest
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// version" banner instead of silently running old code indefinitely.
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registerType: 'prompt',
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manifest: {
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name: 'DS Chat',
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short_name: 'DS Chat',
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start_url: '/',
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display: 'standalone',
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background_color: '#07080f', // --ds-void
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theme_color: '#101030', // --ds-surface
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icons: [
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{ src: '/icons/icon-192.png', sizes: '192x192', type: 'image/png' },
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{ src: '/icons/icon-512.png', sizes: '512x512', type: 'image/png' },
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{
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src: '/icons/icon-512-maskable.png',
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sizes: '512x512',
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type: 'image/png',
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purpose: 'maskable',
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},
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],
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},
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}),
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],
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server: {
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proxy: {
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'/api': {
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target: 'http://localhost:8000',
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changeOrigin: true,
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},
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'/ws': {
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target: 'ws://localhost:8000',
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ws: true,
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},
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},
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},
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// `vite preview` doesn't inherit `server.proxy` -- needed to exercise the
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// real production service worker (only registered against a built
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// bundle, not `vite dev`) against the actual backend.
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preview: {
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proxy: {
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'/api': {
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target: 'http://localhost:8000',
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changeOrigin: true,
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},
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'/ws': {
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target: 'ws://localhost:8000',
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ws: true,
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},
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},
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},
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})
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