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refactor: tryCache function

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Ayo Ayco 2024-08-14 18:43:51 +02:00
parent 9fef0dd913
commit fb1f1e7cf6
1 changed files with 26 additions and 16 deletions
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38
src/sw.js
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@ -16,8 +16,23 @@ const putInCache = async (request, response) => {
await cache.put(request, response);
};
const networkFirst = async ({ request, preloadResponsePromise, fallbackUrl }) => {
const tryCache = async (request, fallbackUrl) => {
// Try get the resource from the cache
const responseFromCache = await caches.match(request);
if (responseFromCache) {
console.info('[cozy-sw]: using cached response', responseFromCache);
return responseFromCache;
}
// Try the fallback
const fallbackResponse = await caches.match(fallbackUrl);
if (fallbackResponse) {
console.info('[cozy-sw]: using fallback cached response', fallbackResponse);
return fallbackResponse;
}
}
const networkFirst = async ({ request, preloadResponsePromise, fallbackUrl }) => {
try {
// Try to use the preloaded response, if it's there
// NOTE: Chrome throws errors regarding preloadResponse, see:
@ -27,31 +42,27 @@ const networkFirst = async ({ request, preloadResponsePromise, fallbackUrl }) =>
// code along with enableNavigationPreload() and the "activate" listener.
const preloadResponse = await preloadResponsePromise;
if (preloadResponse) {
console.info('using preload response', preloadResponse);
console.info('[cozy-sw]: using preload response', preloadResponse);
putInCache(request, preloadResponse.clone());
return preloadResponse;
}
// Next try to get the resource from the network
const responseFromNetwork = await fetch(request.clone());
// response may be used only once
// we need to save clone to put one copy in cache
// and serve second one
if (responseFromNetwork) {
putInCache(request, responseFromNetwork.clone());
console.info('[cozy-sw]: using network response', responseFromNetwork);
return responseFromNetwork;
}
return tryCache(request, fallbackUrl);
} catch (error) {
// Try get the resource from the cache
const responseFromCache = await caches.match(request);
if (responseFromCache) {
return responseFromCache;
}
// Try the fallback
const fallbackResponse = await caches.match(fallbackUrl);
if (fallbackResponse) {
return fallbackResponse;
}
return tryCache(request, fallbackUrl);
// when even the fallback response is not available,
// there is nothing we can do, but we must always
@ -61,7 +72,6 @@ const networkFirst = async ({ request, preloadResponsePromise, fallbackUrl }) =>
headers: { 'Content-Type': 'text/plain' },
});
}
};
const enableNavigationPreload = async () => {