# Polymer/shop

The Shop app

Repository: https://github.com/Polymer/shop
Canonical: https://ross.abutalabs.com/products/polymer-shop
Homepage: https://shop.polymer-project.org/
Language: JavaScript
License Family: other
Last push: 2026-06-20T18:36:53+00:00

## Health v2 (maintenance only)
Score: 62/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 88, release rhythm 8, longevity 100
- inputs: {"age_days": 3761, "days_push": 74, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1021, forks 506 (observed 2026-08-28T04:03:15.749468+00:00)

## What it is
Shop is a sample e-commerce Progressive Web App built by the Polymer team to demonstrate real-world patterns. It showcases a shopping cart, checkout flow, and accessibility announcers using web components.

## Use cases
- build a progressive web app e-commerce site
- learn how to implement a shopping cart and checkout flow
- see a real-life PWA example with Polymer web components
- study accessibility announcer patterns in a web app
- use as a starter template for an online store
- deploy a sample PWA to App Engine with Node.js

## When to choose
- you want a reference implementation of an e-commerce PWA using web components
- you are learning Polymer/LitElement patterns for shopping cart and checkout flows
- you need an accessible sample app to study announcer techniques

## When to avoid
- you need a production-ready, supported e-commerce platform
- you want a framework other than Polymer/web components
- you require an actively maintained project with a license and ongoing feature development

## Facets
- artifact type: application
- maturity: maintenance
- function: frontend-framework, ui-components, state-management, routing
- domain: web-development, frontend, e-commerce, web-design
- platform: browser, cross-platform
- tags: pwa, progressive-web-app, polymer, web-components, sample-app, shopping-cart, checkout-flow, accessibility, demo-app, web-server, nodejs

## Member repositories
- Polymer/shop (main) score 62

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:15.749468+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:08:48.706541+00:00, confidence not recorded.
  - readme: https://github.com/Polymer/shop (fetched 2026-08-28T04:03:15.749468+00:00, sha e1bfeb0e7644)
  - homepage: https://shop.polymer-project.org/ (fetched 2026-08-29T13:09:08.943094+00:00, sha d92c4221e552)
- Data as of 2026-08-30T08:39:29.467469+00:00.