diff options
Diffstat (limited to 'testing/web-platform/tests/appmanifest/name-member/name-member-service-worker.js')
-rw-r--r-- | testing/web-platform/tests/appmanifest/name-member/name-member-service-worker.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/testing/web-platform/tests/appmanifest/name-member/name-member-service-worker.js b/testing/web-platform/tests/appmanifest/name-member/name-member-service-worker.js new file mode 100644 index 0000000000..5733f35636 --- /dev/null +++ b/testing/web-platform/tests/appmanifest/name-member/name-member-service-worker.js @@ -0,0 +1,52 @@ +// Some user agents only offer app installation if there is a SW and it handles +// offline requests. + +const cacheVersion = "1.2"; +const CACHE_NAME = `cache-v${cacheVersion}`; + +// The resources cached by this service worker. +const resources = [ + "name-member-manual.html", + "name-member-service-worker.js", + "resources/name-member-manual.js", + "resources/icon.png", +]; + +// Load all resources for this service worker. +const precache = async () => { + const cache = await caches.open(CACHE_NAME); + await cache.addAll(resources); +}; + +// Get a resource from the cache. +const fromCache = async request => { + const cache = await caches.open(CACHE_NAME); + return await cache.match(request.url); +}; + +// Attempt to get resources from the network first, fallback to the cache if we're +// offline. +const networkFallbackToCache = async request => { + try { + const response = await fetch(request); + if (response.ok) return response; + } catch (err) {} + return await fromCache(request); +}; + +// When we have a new service worker, update the caches and swap immediately. +self.addEventListener("install", e => { + e.waitUntil(precache().then(() => self.skipWaiting())); +}); + +// Claim existing clients. +self.addEventListener("activate", e => { + e.waitUntil(self.clients.claim()); +}); + +// When a resource need to be fetched, check whether it is +// contained in the cache and return the cached version, otherwise +// get it from the network. +self.addEventListener("fetch", e => { + e.respondWith(networkFallbackToCache(e.request)); +}); |