94 lines
2.8 KiB
JavaScript
94 lines
2.8 KiB
JavaScript
const VERSION = '20221018';
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const PRECACHE = 'precache-' + VERSION;
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const MODES = 'modes-' + VERSION;
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// A regexp to detect mode files
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const MODE_REGEXP = /^js\/mode\//;
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// A list of local resources we always want to be cached.
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const PRECACHE_URLS = [
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'/',
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'script.js',
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'style.css',
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'favicon.ico',
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'js/lzma_worker.min.js',
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'js/lzma.min.js',
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'js/slimselect.min.js',
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'js/clipboard.min.js',
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'js/micromodal.min.js',
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'js/codemirror.min.js',
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'js/loadmode.min.js',
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'js/overlay.min.js',
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'js/multiplex.min.js',
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'js/simple.min.js',
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'js/simplescrollbars.js',
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'js/meta.min.js',
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'css/bootstrap-grid.min.css',
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'css/slimselect.min.css',
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'css/codemirror.min.css',
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'css/simplescrollbars.css',
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'css/dracula.min.css',
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'css/microtip.min.css',
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'fonts/JetBrainsMono-Regular.woff2',
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'fonts/roboto-v20.woff2',
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];
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// The install handler takes care of precaching the resources we always need.
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self.addEventListener('install', (event) => {
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event.waitUntil(
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caches
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.open(PRECACHE)
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.then((cache) => cache.addAll(PRECACHE_URLS))
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.then(self.skipWaiting())
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);
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});
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// The activate handler takes care of cleaning up old caches.
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self.addEventListener('activate', (event) => {
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const currentCaches = [PRECACHE, MODES];
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event.waitUntil(
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caches
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.keys()
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.then((cacheNames) => {
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return cacheNames.filter((cacheName) => !currentCaches.includes(cacheName));
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})
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.then((cachesToDelete) => {
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return Promise.all(
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cachesToDelete.map((cacheToDelete) => {
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return caches.delete(cacheToDelete);
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})
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);
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})
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.then(() => self.clients.claim())
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);
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});
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// The fetch handler serves responses from a cache.
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// If no response is found, it populates the runtime cache with the response
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// from the network before returning it to the page.
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self.addEventListener('fetch', (event) => {
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if (!event.request.url.startsWith(self.location.origin)) {
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return;
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}
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event.respondWith(
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caches.match(event.request, { ignoreSearch: true }).then((cachedResponse) => {
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if (cachedResponse) {
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return cachedResponse;
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}
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if (!event.request.url.match(MODE_REGEXP)) {
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return fetch(event.request);
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}
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return caches.open(MODES).then((cache) => {
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return fetch(event.request).then((response) => {
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// Put a copy of the response in the runtime cache.
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return cache.put(event.request, response.clone()).then(() => {
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return response;
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});
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});
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});
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})
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);
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});
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