const CACHE_NAME = "version-1";
const CACHE_FILES = [
    "/", "index.html", "404.html",
    "/css/styles.css"];

const self = this;

self.addEventListener("install", function(e) {
    e.waitUntil(
        caches.open(CACHE_NAME).then((cache) => {
            console.log('caches opened');

            return cache.addAll(CACHE_FILES);
        })
    )
});

self.addEventListener("fetch", function() {

});

self.addEventListener("sync", function() {

});

self.addEventListener("push", function() {

});

self.addEventListener("activate", function() {

});

self.addEventListener("message", function() {

});