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sw.js
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sw.js
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importScripts('https://storage.googleapis.com/workbox-cdn/releases/3.6.1/workbox-sw.js');
// Precaching html, basic css, and portrait.
workbox.precaching.precacheAndRoute([
{ url: '/styles/index.css', revision: 4},
{ url: '/index.html', revision: 7},
]);
// Offline analytics, because why not.
workbox.googleAnalytics.initialize();
workbox.routing.registerRoute(
// Cache that JS
/.*\.js/,
workbox.strategies.networkFirst()
);
workbox.routing.registerRoute(
// Cache CSS files
/.*\.css/,
// Use cache but update in the background ASAP
workbox.strategies.staleWhileRevalidate({
// Use a custom cache name
cacheName: 'css-cache',
})
);
workbox.routing.registerRoute(
// Cache image files
/.*\.(?:png|jpg|jpeg|svg|gif)/,
// Use the cache if it's available
workbox.strategies.cacheFirst({
// Use a custom cache name
cacheName: 'image-cache',
plugins: [
new workbox.expiration.Plugin({
// Cache all 9 images.
maxEntries: 9,
// Cache for just 1 day, I won't steal your memory for too long.
maxAgeSeconds: 1 * 24 * 60 * 60,
})
],
})
);