Workbox v4.0.0-rc.1

The latest RC release of Workbox v4 includes the following developer-visible changes, in addition to all the changes from the previous pre-releases.

🎉 What's New?

workbox-window

• The workbox-window package now ships with a few different build options, to help make it as easy as possible for people to include it in to their existing tool chain [#1895, #1899]. Here's what's currently supported:

1. Requiring workbox-window in node (or any or environment that doesn't support native modules):

// Imports a UMD version with ES5 syntax
const {Workbox} = require('workbox-window');

2. Importing workbox-window via webpack or Rollup in a context where your build does not automatically transpile anything in node_modules:

// Imports the module version with ES5 syntax
import {Workbox} from 'workbox-window';

3. Importing workbox-window via webpack or Rollup in a context where you can handle transpiling yourself (or you don't need to transpile to ES5):

// Imports the module version with ES2015+ syntax
import {Workbox} from 'workbox-window/Workbox.mjs';

Note: option 3 above will usually result in the smallest file size, so it's recommend to do that if your build supports it.

🐛 What's Fixed?

workbox-routing

• The setCatchHandler() and setDefaultHandler() methods were not properly migrated as part of the bundling changes in #1831. This has been fixed, and these method now work as they did before [#1898].