kryndex / hacker-news-pwas

HNPWA - Hacker News readers as Progressive Web Apps 📱

Hacker News readers as Progressive Web Apps. A spiritual successor to TodoMVC.

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Implementations

See our site or the site/apps directory for the current list of implementations.

Specification

Each implementation must include:

• Views: Hacker News Top Stories, New, Show, Ask, Jobs & threaded Comments
  • Each of these should use routing to enable sharability. For reference, see the PreactHN implementation.
• App must display 30 items per-page for story list views
• App must be a Progressive Web App
• App must score over a 90/100 using Lighthouse
• App must aim to be interactive in under 5 seconds on a Moto G4 over 3G. Use WebPageTest using the auto-selected Moto G4 + Faster 3G setting to validate "Time to interactive"
  • We look at numeric Lighthouse scores for TTI as well as a manual inspection of the application's Timeline "trace" and Filmstrip as a sanity check.
• App must use the Application Shell pattern to instantly load the skeleton of the UI on repeat visits
• App is responsive on desktop and mobile, making best use of available screen real-estate. See Vue HN as an example.
• App must do its best to work cross-browser

Optionally:

• App supports offline caching of HN data (e.g similar to the 'Offline Mode' in ReactHN)
• App may use server-side rendering so displaying content is resilient to JS not loading on the network

User interface:

• At this time, HNPWA does not prescribe a specific stylesheet or theme for implementations. We will be aiming to provide this in the near future similar to how we do with TodoMVC.

Data sources

• Official real-time Hacker News API powered by Firebase
• Unofficial Hacker News API by cheeaun

If using the Firebase powered API please use 30 stories per-page to ensure consistency between implementations using the Unofficial API as well as the actual Hacker News website

Network settings

• Emerging Markets: Chrome Beta on a Motorola G (gen 4) tested from Dulles, Virginia on a 400 Kbps 3G connection with 400ms of latency. Tested with WebPageTest using the auto-selected Moto G4 + Emerging Markets setting.
• Faster 3G: Chrome Beta on a Motorola G (gen 4) tested from Dulles, Virginia on a 1.6 Mbps 3G connection with 300ms of latency. Tested with WebPageTest using the auto-selected Moto G4 + Faster 3G setting.
• Time to Interactive readings taken from linked Lighthouse results in WebPageTest.

License

Each implementation preserves the license noted in the linked to applications.