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service-worker.js
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service-worker.js
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const APP_PREFIX = 'Jim-s-Burgers';
const VERSION = 'version_01';
const CACHE_NAME = APP_PREFIX + VERSION
const FILES_TO_CACHE = [
"./index.html",
"./events.html",
"./tickets.html",
"./schedule.html",
"./assets/css/style.css",
"./assets/css/bootstrap.css",
"./assets/css/tickets.css",
"./dist/app.bundle.js",
"./dist/events.bundle.js",
"./dist/tickets.bundle.js",
"./dist/schedule.bundle.js"
];
// Respond with cached resources
self.addEventListener('fetch', function (e) {
console.log('fetch request : ' + e.request.url)
e.respondWith(
caches.match(e.request).then(function (request) {
if (request) { // if cache is available, respond with cache
console.log('responding with cache : ' + e.request.url)
return request
} else { // if there are no cache, try fetching request
console.log('file is not cached, fetching : ' + e.request.url)
return fetch(e.request)
}
// You can omit if/else for console.log & put one line below like this too.
// return request || fetch(e.request)
})
)
})
// Cache resources
self.addEventListener('install', function (e) {
e.waitUntil(
caches.open(CACHE_NAME).then(function (cache) {
console.log('installing cache : ' + CACHE_NAME)
return cache.addAll(FILES_TO_CACHE)
})
)
})
// Delete outdated caches
self.addEventListener('activate', function (e) {
e.waitUntil(
caches.keys().then(function (keyList) {
// `keyList` contains all cache names under your username.github.io
// filter out ones that has this app prefix to create keeplist
let cacheKeeplist = keyList.filter(function (key) {
return key.indexOf(APP_PREFIX);
})
// add current cache name to keeplist
cacheKeeplist.push(CACHE_NAME);
return Promise.all(keyList.map(function (key, i) {
if (cacheKeeplist.indexOf(key) === -1) {
console.log('deleting cache : ' + keyList[i] );
return caches.delete(keyList[i]);
}
}));
})
);
});