om/public/serviceWorker.js

'use strict';

// TODO: Instance var/const for version control and cache list

// NOTE: Registration
if ('serviceWorker' in navigator) {
	// Register a service worker hosted at the root of the
	// site using the default scope.
	navigator.serviceWorker.register('/serviceWorker.js', {
		scope: '/'
	}).then(function (registration) {
		return console.log('Service worker registration succeeded: ', registration);
	}).catch(function (error) {
		// registration failed
		return console.log('Service worker registration failed: ', error);
	});
} else {
	console.log('Service workers are not supported.');
}

// NOTE: Install and activate: Populating cache
self.addEventListener('install', function (event) {
	event.waitUntil(
		caches.open('v1').then(function (cache) {
			return cache.addAll([
        '/',
        '/index.html',
        '/style.css'
		   ]);
		})
	);
});

// NOTE: Fetch structure
self.addEventListener('fetch', function(event) {

});

// NOTE: Activate structure <- TODO: Delete older cache versions