// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// @ts-check
'use strict';
const cacheName = '{{cache_hash}}';
const filesToCache = [
'auth.js',
'auth-consts.js',
'caspian_web.js',
'caspian_web.wasm',
'dom.js',
'favicon.ico',
'viewer.html',
'infocard-ui.js',
'infocard.css',
'main.css',
'manifest.json',
'metadata-tree-ui.js',
'metrics-tree-ui.js',
'options.css',
'shared.js',
'start-worker.js',
'state.js',
'symbol-tree-ui.js',
'tree-ui.js',
'tree-worker-wasm.js',
'ui-base.js',
'ui-main.js',
];
// On install, cache the items in the `filesToCache` list
self.addEventListener('install', event => {
event.waitUntil(
caches.open(cacheName).then(cache => cache.addAll(filesToCache))
);
});
// On activate, remove any old caches
self.addEventListener('activate', event => {
async function deleteOldCache(key) {
if (key !== cacheName) {
return caches.delete(key);
}
}
event.waitUntil(
caches.keys().then(keyList => Promise.all(keyList.map(deleteOldCache)))
);
return self.clients.claim();
});
// On fetch, return entries from the cache if possible
self.addEventListener('fetch', event => {
event.respondWith(
caches
.match(event.request, {ignoreSearch: true})
.then(response => response || fetch(event.request))
);
});