Sample apps
This documentation is a work in progress. It describes prerelease software, and is subject to change.
Here are some applications that we 
Hacker News (code, demo)
- a small Hacker News client, inspired by the HN PWA project that compares implementations for the same PWA app
- pattern for fetching data from a generic API
- pattern for using
indexedDBfor local storage
Flash Cards (code, demo)
- flash-cards game to help you learn Japanese (but can be extended for any language and set of cards)
- pattern for storing state in
localStorage - pattern for loading local data
jsonfiles - uses the
SpeechSynthesisAPI
Books (code, demo)
- app that searches for books using the Google Books API
- shows how to use the Embedded Viewer API to display book content
- shows how to use the Google Books API to list/update favorites on the authenticated user’s bookshelf
- pattern for using UI loading placeholders
- pattern for re-fetching data when the network state changes
- pattern for integrating Google Sign-In
- uses the SpeechRecognition API
Shop (code, demo)
- a sample e-commerce shopping site
- pattern for a real-life shopping cart and store checkout flow
- pattern for using custom announcers for accessibility