blog/source/sw.js

sw.js

importScripts('https://cdn.jsdelivr.net/npm/workbox-cdn@5.1.3/workbox/workbox-sw.js');

workbox.setConfig({
    modulePathPrefix: 'https://cdn.jsdelivr.net/npm/workbox-cdn@5.1.3/workbox/'
});

const { core, precaching, routing, strategies, expiration, cacheableResponse, backgroundSync } = workbox;
const { CacheFirst, NetworkFirst, NetworkOnly, StaleWhileRevalidate } = strategies;
const { ExpirationPlugin } = expiration;
const { CacheableResponsePlugin } = cacheableResponse;

const cacheSuffixVersion = '-000010', // 缓存版本号 极端重要，修改静态文件后发布网页一定要修改缓存版本号
    maxEntries = 100;

self.addEventListener('activate', (event) => {
    event.waitUntil(
        caches.keys().then((keys) => {
            return Promise.all(keys.map((key) => {
                if (!key.includes(cacheSuffixVersion)) return caches.delete(key);
            }));
        })
    );
});


core.setCacheNameDetails({
    prefix: 'volantis', // 极端重要 自己拟定一个名字
    suffix: cacheSuffixVersion
});

core.skipWaiting();
core.clientsClaim();
precaching.cleanupOutdatedCaches();

/*
 * Precache
 * - Static Assets
 */
precaching.precacheAndRoute( // 极端重要 定义首次缓存的静态文件 如果开启CDN需要修改为CDN链接
    [
        { url: '/css/first.css', revision: null },
        { url: '/css/style.css', revision: null },
        { url: '/js/app.js', revision: null },
    ],
);

/*
 * Cache File From CDN
 *
 * Method: CacheFirst
 * cacheName: static-immutable
 * cacheTime: 30d
 */

// cdn.jsdelivr.net - cors enabled
routing.registerRoute(
    /.*cdn\.jsdelivr\.net/,
    new CacheFirst({
        cacheName: 'static-immutable' + cacheSuffixVersion,
        fetchOptions: {
            mode: 'cors',
            credentials: 'omit'
        },
        plugins: [
            new ExpirationPlugin({
                maxAgeSeconds: 30 * 24 * 60 * 60,
                purgeOnQuotaError: true
            })
        ]
    })
);

// m7.music.126.net - cors enabled
routing.registerRoute(
    /.*m7\.music\.126\.net/,
    new CacheFirst({
        cacheName: 'static-immutable' + cacheSuffixVersion,
        fetchOptions: {
            mode: 'cors',
            credentials: 'omit'
        },
        plugins: [
            new ExpirationPlugin({
                maxAgeSeconds: 30 * 24 * 60 * 60,
                purgeOnQuotaError: true
            })
        ]
    })
);

/*
 *  No Cache
 *
 * Method: networkOnly
 */
routing.registerRoute(
    /.*baidu\.com.*/,
    new NetworkOnly()
);
/*
 * Others img fonts
 * Method: staleWhileRevalidate
 */
routing.registerRoute(
    // Cache image fonts files
    /.*\.(?:png|jpg|jpeg|svg|gif|webp|ico|eot|ttf|woff|woff2|mp3)/,
    new StaleWhileRevalidate()
);

/*
 * Static Assets
 * Method: staleWhileRevalidate
 */
routing.registerRoute(
    // Cache CSS files
    /.*\.(css|js)/,
    // Use cache but update in the background ASAP
    new StaleWhileRevalidate()
);

/*
 * sw.js - Revalidate every time
 * staleWhileRevalidate
 */
routing.registerRoute(
    '/sw.js', // 本文件名
    new StaleWhileRevalidate()
);

/*
 * Default - Serve as it is
 * networkFirst
 */
routing.setDefaultHandler(
    new NetworkFirst({
        networkTimeoutSeconds: 3
    })
);