Cache HTML page with Service Worker (#6802)
This is the first step to make Mastodon work offline. It is also required by Chromium to trigger Web Manifest automated install prompt.master
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import './web_push_notifications'; |
import './web_push_notifications'; |
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function fetchRoot() { |
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return fetch('/', { credentials: 'include' }); |
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} |
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// Cause a new version of a registered Service Worker to replace an existing one
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// Cause a new version of a registered Service Worker to replace an existing one
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// that is already installed, and replace the currently active worker on open pages.
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// that is already installed, and replace the currently active worker on open pages.
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self.addEventListener('install', function(event) { |
self.addEventListener('install', function(event) { |
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event.waitUntil(self.skipWaiting()); |
const promises = Promise.all([caches.open('mastodon-web'), fetchRoot()]); |
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const asyncAdd = promises.then(([cache, root]) => cache.put('/', root)); |
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event.waitUntil(asyncAdd); |
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}); |
}); |
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self.addEventListener('activate', function(event) { |
self.addEventListener('activate', function(event) { |
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event.waitUntil(self.clients.claim()); |
event.waitUntil(self.clients.claim()); |
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}); |
}); |
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self.addEventListener('fetch', function(event) { |
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const url = new URL(event.request.url); |
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if (url.pathname.startsWith('/web/')) { |
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event.respondWith(fetchRoot().then(response => { |
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if (response.ok) { |
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return response; |
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} |
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throw null; |
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}).catch(() => caches.match('/'))); |
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} |
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}); |
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