67 lines
1.9 KiB
JavaScript
Executable File
67 lines
1.9 KiB
JavaScript
Executable File
const blacklist = [
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'jamesbarnsley.co.nz',
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'following/contains',
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'followers/contains',
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'me/tracks',
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'me/albums',
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'me/following',
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'refresh_spotify_token',
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];
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function inBlacklist(url) {
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for (const item of blacklist) {
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if (url.indexOf(item) >= 0) {
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return true;
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}
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}
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return false;
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}
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self.addEventListener('activate', (event) => {
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event.waitUntil(
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caches.keys().then((cacheNames) => Promise.all(cacheNames.map((cacheName) => caches.delete(cacheName)))),
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);
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});
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self.addEventListener('fetch', (event) => {
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const { request } = event;
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event.respondWith(
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// Opens Cache objects that start with 'font'.
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caches.open('iris').then((cache) => cache.match(request)
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.then((response) => {
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if (response) {
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return response;
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}
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// Not cached, so we make the request, return that and also save response in cache
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return fetch(request)
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.then((liveResponse) => {
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const isBlacklisted = inBlacklist(request.url);
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// Only cache successful GET requests
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if (
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!isBlacklisted
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&& request.method === 'GET'
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&& liveResponse.status >= 200
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&& liveResponse.status < 400
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) {
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// Fixes Edge browser "'chrome-extension' is unsupported" issue
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// See https://stackoverflow.com/questions/49157622/service-worker-typeerror-when-opening-chrome-extension
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if (!/^https?:$/i.test(new URL(request.url).protocol)) return;
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cache.put(request, liveResponse.clone());
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} else {
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console.info(`Not caching ${isBlacklisted ? '(blacklisted) ' : ''}${request.method} ${request.url}`);
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}
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return liveResponse;
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});
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// Exceptions from match() or fetch()
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}).catch((error) => {
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throw error;
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})),
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);
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});
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