81 lines
2.9 KiB
TypeScript
81 lines
2.9 KiB
TypeScript
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/// <reference lib="webworker" />
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/* eslint-disable no-restricted-globals */
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// This service worker can be customized!
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// See https://developers.google.com/web/tools/workbox/modules
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// for the list of available Workbox modules, or add any other
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// code you'd like.
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// You can also remove this file if you'd prefer not to use a
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// service worker, and the Workbox build step will be skipped.
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import { clientsClaim } from 'workbox-core'
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import { ExpirationPlugin } from 'workbox-expiration'
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import { createHandlerBoundToURL, precacheAndRoute } from 'workbox-precaching'
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import { registerRoute } from 'workbox-routing'
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import { StaleWhileRevalidate } from 'workbox-strategies'
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declare const self: ServiceWorkerGlobalScope
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clientsClaim()
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// Precache all of the assets generated by your build process.
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// Their URLs are injected into the manifest variable below.
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// This variable must be present somewhere in your service worker file,
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// even if you decide not to use precaching. See https://cra.link/PWA
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precacheAndRoute(self.__WB_MANIFEST)
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// Set up App Shell-style routing, so that all navigation requests
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// are fulfilled with your index.html shell. Learn more at
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// https://developers.google.com/web/fundamentals/architecture/app-shell
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const fileExtensionRegexp = new RegExp('/[^/?]+\\.[^/]+$')
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registerRoute(
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// Return false to exempt requests from being fulfilled by index.html.
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({ request, url }: { request: Request; url: URL }) => {
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// If this isn't a navigation, skip.
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if (request.mode !== 'navigate') {
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return false
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}
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// If this is a URL that starts with /_, skip.
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if (url.pathname.startsWith('/_')) {
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return false
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}
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// If this looks like a URL for a resource, because it contains
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// a file extension, skip.
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if (url.pathname.match(fileExtensionRegexp)) {
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return false
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}
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// Return true to signal that we want to use the handler.
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return true
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},
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createHandlerBoundToURL(process.env.PUBLIC_URL + '/index.html')
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)
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// An example runtime caching route for requests that aren't handled by the
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// precache, in this case same-origin .png requests like those from in public/
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registerRoute(
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// Add in any other file extensions or routing criteria as needed.
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({ url }) => url.origin === self.location.origin && url.pathname.endsWith('.png'),
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// Customize this strategy as needed, e.g., by changing to CacheFirst.
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new StaleWhileRevalidate({
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cacheName: 'images',
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plugins: [
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// Ensure that once this runtime cache reaches a maximum size the
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// least-recently used images are removed.
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new ExpirationPlugin({ maxEntries: 50 })
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]
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})
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)
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// This allows the web app to trigger skipWaiting via
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// registration.waiting.postMessage({type: 'SKIP_WAITING'})
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self.addEventListener('message', event => {
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if (event.data && event.data.type === 'SKIP_WAITING') {
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self.skipWaiting()
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}
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})
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// Any other custom service worker logic can go here.
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