This is an example of a PWA built using pure WebComponents.
It is not intended to be any kind of definitive blueprint for building applications, just an example to demonstrate that it is possible to build a modern, fast, Progressive Web App without depending on a framework - because WebComponents are like having a framework that is built in to the browser.
The implementation isn't complete yet but you can view the preview version here.
Main things to complete are:
- Add story item view with comments
- Add service-worker and data caching
- Automate the build (esp. the hashed JS file ref)
- Optimize list rendering to reduce reflow / repaint
- Use a single source for views / templates
- Cross-browser compatibility & testing (only Chrome + Safari + FireFox)
- Lots of tidy up!
First-view performance is boosted by Server Side Rendering (SSR) of the requested view using Go.
Initial testing using WebPageTest.org's Lighthouse option shows decent performance for the fast 3G profile as used by the hnpwa.com site with the First Interactive time of 1.38s
