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Service worker now applies the strategies the roadmap asks for :
* Static assets : StaleWhileRevalidate (already in place)
* HLS segments : CacheFirst, max-age 7d, max 50 entries
* API GET : NetworkFirst, 3s timeout
Stayed on the hand-rolled fetch handlers rather than migrating to
Workbox — the existing implementation already covers push notifications
+ background sync + notificationclick, and Workbox would bring 200+ KB
of runtime + a build-step dependency for a feature set we already have.
Changes
- public/sw.js
* HLS_CACHE_MAX_ENTRIES (50) + HLS_CACHE_MAX_AGE_MS (7d) +
NETWORK_FIRST_TIMEOUT_MS (3s) tunable at the top of the file.
* cacheAudio : reads the cached response's date header to skip
stale entries (>7d), and prunes the cache FIFO after every put
so the entry count never exceeds 50. Network-down path still
serves stale entries (the offline-playback acceptance).
* networkFirst : races the network against a 3s timer ; if the
timer fires AND a cached entry exists, serve cached + let the
network keep updating in the background. Timeout without a
cached fallback lets the network race continue.
* isAudioRequest now matches .ts and .m4s segments too (HLS).
- scripts/stamp-sw-version.mjs (new) : postbuild step that replaces
the literal __BUILD_VERSION__ placeholder in dist/sw.js with
YYYYMMDDHHMM-<short-sha>. Pre-Day 16 the placeholder shipped
literally — same string across every deploy meant browser caches
were never invalidated. Wired into npm run build + build:ci.
- tests/e2e/31-sw-offline-cache.spec.ts : 2 tests gated behind
E2E_SW_TESTS=1 (SW only registers in prod builds — dev server
skips registration via import.meta.env.DEV check). When enabled :
(1) registration + activation, (2) cached resource served while
context.setOffline(true).
Acceptance (Day 16) : strategies match spec ; offline playback works
once the user has played the segment once before going offline. The
e2e self-skips on dev unless E2E_SW_TESTS=1 is set against vite preview.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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| .. | ||
| analyze-errors.js | ||
| audit-storybook.js | ||
| capture-visual-baseline.mjs | ||
| check-bundle-size.mjs | ||
| check-types-sync.sh | ||
| check_backend.sh | ||
| codemod-typography-arbitrary.mjs | ||
| compare-visual.mjs | ||
| debug-story.js | ||
| fix-failing-tests.sh | ||
| fix-ui-imports.sh | ||
| fix-unused-vars.sh | ||
| generate-types.sh | ||
| generate-visual-report.mjs | ||
| replace-console-logs.sh | ||
| report-arbitrary-values.mjs | ||
| serve-storybook-static.cjs | ||
| stamp-sw-version.mjs | ||
| start-backend-and-dev.sh | ||
| start_lab.sh | ||
| storybook-coverage.sh | ||
| validate-storybook.cjs | ||
| visual-diff.js | ||
| wrap_msw_handlers.py | ||