Workbox v3.0.0-alpha.4

🎉 What's New?

• #1138 Plugins can now be added to workbox-precaching; this is useful for adding plugins like workbox-broadcast-cache-update.
• #1149 workbox-webpack-plugin now supports {test, include, exclude}-style filtering, providing an additional way of controlling which assets are included in the precache manifest. By default, assets matching /\.map$/ or /^manifest\.js(?:on)$/ are excluded.
• #1154 workbox-precaching supports two new configuration options, cleanUrls and urlManipulation. By default cleanUrls is true and will check the precache for a with .html on the end (i.e. /about will check for /about.html. urlManipulation can be a function enabling you to express a mapping between the server-side URL and the underlying local file.

🐛 What's Fixed?

• #1130 A cleaner service worker template.
• #1127, #1128, #1126, #1133, #1132 Various improvements to the test suite.
• #1139 Fix for an IDB bug, which could prevent v2 to v3 migrations from succeeding.
• #1155 Fix for a bug that could cause workbox-background-sync to enter a loop of repeated registrations.

⚠️ Breaking Changes

• #1137 The importWorkboxFromCDN boolean option, which was supported in previous v3 alpha releases of workbox-build, has been replaced by importWorkboxFrom. Valid values for importWorkboxFrom are 'cdn', 'local', null, or (when used from the workbox-webpack-plugin) the name of a webpack chunk.
• #1143 The workbox-webpack-plugin module now exposes two top-level webpack plugins, named GenerateSW and InjectManifest. Developers need to explicitly use one of these two plugins, depending on whether they want to create a new service worker file each time they run their build (GenerateSW) or whether they want to use an existing service worker file but inject updated precache manifest information each time they build (InjectManifest).
• #1160 The valid runtimeCaching options have been updated, representing a break from the older syntax supported by sw-precache. The following example contains the full set of currently supported options:

runtimeCaching: [{
  urlPattern: /api/,
  handler: 'networkFirst',
  options: {
    networkTimeoutSeconds: 10,
    cacheName: 'my-api-cache',
    expiration: {
      maxEntries: 5,
      maxAgeSeconds: 60,
    },
    cacheableResponse: {
      statuses: [0, 200],
      headers: {'x-test': 'true'},
    },
    broadcastUpdate: {
      channelName: 'my-update-channel',
    },
    plugins: [
      {cacheDidUpdate: () => /* custom plugin code */}
    ],
  },
}]