Service Worker Rendering - Install Event

sw.install.js

importScripts('./js/handlebars.min.js');
importScripts('./templates/post.precompiled.js');

var CACHE_NAME = 'cache-v1';
var urlsToCache = [
  '/',
  '/templates/index.precompiled.js',
  '/post/',
  '/templates/post.precompiled.js',
  '/css/style.css',
  '/js/handlebars.min.js',
  '/js/main.js',
  'https://jsonplaceholder.typicode.com/posts'
];

self.addEventListener('install', function(event) {
  console.log("Service Worker Registration", event)
  event.waitUntil(
    caches.open(CACHE_NAME)
      .then(function(cache) {
        return cache.addAll(urlsToCache);
      })
      .catch(function(err) {
        return console.log(err);
      })
  );
});