39 lines
790 B
JavaScript
39 lines
790 B
JavaScript
const CACHE_VERSION = "v1";
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async function handleRequest(event) {
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const responsePromise = getResponse(event);
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event.respondWith(responsePromise);
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}
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async function getResponse(event) {
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try {
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return await fetchAndCache(event);
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} catch {
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return await getFromCache(event);
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}
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}
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async function fetchAndCache(event) {
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const request = event.request;
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const response = await fetch(request);
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const cache = await caches.open(CACHE_VERSION);
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await cache.put(request, response.clone());
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return response;
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}
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async function getFromCache(event) {
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const request = event.request;
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const cache = await caches.open(CACHE_VERSION);
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const response = await cache.match(request);
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return response;
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}
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self.addEventListener("fetch", (event) => {
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handleRequest(event);
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});
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