src/remote/service-worker.ts

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/// <reference lib="WebWorker" />

export type {};

declare const self: ServiceWorkerGlobalScope;

const url = new URL(location.toString());
const version = url.searchParams.get('version');
const prod = url.searchParams.get('prod') === 'true';
const cacheName = `samo-remote-${version}`;

const resourcesToCache = ['./', './remote.js', './samologo.svg', './samologo.png'];

if (prod) {
    resourcesToCache.push('./remote.css');
}

self.addEventListener('install', (e) => {
    e.waitUntil(
        caches.open(cacheName).then((cache) => {
            return cache.addAll(resourcesToCache);
        }),
    );
});

self.addEventListener('fetch', (e) => {
    e.respondWith(
        caches.match(e.request).then((response) => {
            return response || fetch(e.request);
        }),
    );
});

self.addEventListener('activate', (e) => {
    e.waitUntil(
        caches.keys().then((keyList) => {
            return Promise.all(
                keyList.map((key) => {
                    if (key !== cacheName) {
                        return caches.delete(key);
                    }
                    return Promise.resolve();
                }),
            );
        }),
    );
});