版本：6.0.0-alpha.3
- https://cdn.bootcdn.net/ajax/libs/workbox-sw/6.0.0-alpha.3/workbox-sw.js
- https://cdn.bootcdn.net/ajax/libs/workbox-sw/6.0.0-alpha.3/workbox-sw.min.js
This module makes it easy to get started with the Workbox service worker libraries.