@khmyznikov/pwa-install/docs/service-worker.js

PWA install dialog provide more convenience user experience and fix lack of native dialogs in some browsers.

var cacheName="PWAinstallDemo-24.9.2024/23:0:49",filesToCache=["/pwa-install/","manifest.json"];function sendMessage(e,n){return new Promise((function(t,s){var a=new MessageChannel;e.postMessage(n,[a.port2])}))}function sendMessageToAll(e,n){clients.matchAll().then((t=>{t.forEach((n=>{sendMessage(n,e)})),n&&"function"==typeof n&&n()}))}self.addEventListener("install",(function(e){e.waitUntil(caches.open(cacheName).then((function(e){return e.addAll(filesToCache)}))),self.skipWaiting()})),self.addEventListener("activate",(function(e){return e.waitUntil(caches.keys().then((function(e){return Promise.all(e.map((function(e){if(e!==cacheName)return sendMessageToAll("NEW_VERSION"),caches.delete(e)})))}))),self.clients.claim()})),self.addEventListener("fetch",(function(e){e.respondWith(caches.match(e.request,{ignoreSearch:!0}).then((function(n){return n||fetch(e.request)})))})),self.addEventListener("message",(e=>{e&&e.data&&e.data.message}));