55 lines
1.2 KiB
JavaScript
55 lines
1.2 KiB
JavaScript
const cacheName = self.location.pathname
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const pages = [
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{{ if eq .Site.Params.BookServiceWorker "precache" }}
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{{ range .Site.AllPages -}}
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"{{ .RelPermalink }}",
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{{ end -}}
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{{ end }}
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];
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self.addEventListener("install", function (event) {
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self.skipWaiting();
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caches.open(cacheName).then((cache) => {
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return cache.addAll(pages);
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});
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});
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self.addEventListener("fetch", (event) => {
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const request = event.request;
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if (request.method !== "GET") {
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return;
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}
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/**
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* @param {Response} response
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* @returns {Promise<Response>}
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*/
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function saveToCache(response) {
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if (cacheable(response)) {
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return caches
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.open(cacheName)
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.then((cache) => cache.put(request, response.clone()))
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.then(() => response);
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} else {
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return response;
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}
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}
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/**
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* @param {Error} error
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*/
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function serveFromCache(error) {
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return caches.open(cacheName).then((cache) => cache.match(request.url));
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}
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/**
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* @param {Response} response
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* @returns {Boolean}
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*/
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function cacheable(response) {
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return response.type === "basic" && response.ok && !response.headers.has("Content-Disposition")
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}
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event.respondWith(fetch(request).then(saveToCache).catch(serveFromCache));
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});
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