Cache API

cache-api.js

// https://alligator.io/js/cache-api/

if ('caches' in  window) {
  const cacheName = 'sample-caches'
  const url = '/resource'

  caches.open(cacheName).then(cache => {
    return console.log(cache)
  })

  fetch(url).then(res => {
    return caches.open(cacheName).then(cache => {
      return cache.put(url, res)
    })
  })

  caches.keys().then(keys => {
    keys.map(key => console.log(key))
  })
}