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pwabuilder-sw.js
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pwabuilder-sw.js
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const CACHE = "pwabuilder-page";
const offlineFallbackPage = "offline.html";
self.addEventListener( "install", function( event ) {
// console.log( "WORKER: install event in progress." );
// immediately take over
self.skipWaiting();
event.waitUntil(
caches.open(CACHE)
.then(function( cache ) {
return cache.add(offlineFallbackPage);
})
);
});
self.addEventListener("fetch", function (event) {
if (event.request.method !== "GET") return;
event.respondWith(
fetch(event.request).catch(function (error) {
// The following validates that the request was for a navigation to a new document
if (
event.request.destination !== "document" ||
event.request.mode !== "navigate"
) {
return;
}
console.error("[PWA Builder] Network request Failed. Serving offline page " + error);
return caches.open(CACHE).then(function (cache) {
return cache.match(offlineFallbackPage);
});
})
);
});
self.addEventListener("refreshOffline", function () {
const offlinePageRequest = new Request(offlineFallbackPage);
return fetch(offlineFallbackPage).then(function (response) {
return caches.open(CACHE).then(function (cache) {
console.log("[PWA Builder] Offline page updated from refreshOffline event: " + response.url);
return cache.put(offlinePageRequest, response);
});
});
});