sw.js

var cacheName = 'SmartCharts';
var filesToCache = [
    './index.html',
    './dist/smartcharts.css',
    './dist/babel-polyfill.min.js',
    './dist/react.js',
    './dist/react-dom.js',
    './dist/react-transition-group.js',
    './dist/mobx.js',
    './dist/mobx-react-lite.js',
    './dist/smartcharts.js',
];

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

self.addEventListener('activate', function (event) {
    event.waitUntil(self.clients.claim());
});

self.addEventListener('fetch', function (event) {
    if (event.request.cache === 'only-if-cached' && event.request.mode !== 'same-origin') {
        return;
    }
    event.respondWith(
        caches.match(event.request, { ignoreSearch: true }).then(function (response) {
            return response || fetch(event.request);
        })
    );
});