Cache Static Assets with Service Workers using sw-precache

A service worker is a script that runs in the background without access to the UI, and a requisite for a Progressive Web App. They can be used, among others, for caching requests and assets.

Creating a Service Worker is not easy, and can be repetitive to do it for every single app. That’s where sw-precache jumps in, a module for automating the creation of service workers in a declarative way.

This lesson will go through creating a Service Worker using sw-precache.