# Polymer/polymer-starter-kit

A starting point for Polymer apps

Repository: https://github.com/Polymer/polymer-starter-kit
Canonical: https://ross.abutalabs.com/products/polymer-starter-kit
Language: JavaScript
License Family: other
Archived: true
Last push: 2019-03-28T09:49:35+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4156, "days_push": 2715, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2430, forks 642 (observed 2026-08-28T04:06:51.086364+00:00)

## What it is
A starter template for building web applications with the Polymer library and web components, featuring a drawer-based app layout and the PRPL pattern for fast loading. It scaffolds projects initialized via Polymer CLI with preconfigured development, routing, and multi-target production builds.

## Use cases
- scaffold a new Polymer web app
- get a starter template for web components
- set up a PWA with service worker and precaching
- build an app with drawer-based navigation layout
- generate ES5/ES6/ESM production builds for different browsers
- learn the PRPL pattern for fast app delivery

## When to choose
- starting a legacy Polymer 3 web components project
- you need a ready-made app shell with routing and service worker
- you want to study the PRPL delivery pattern

## When to avoid
- starting a new project today - Polymer is deprecated in favor of Lit
- you need a maintained framework with active community support
- you want a modern build toolchain like Vite or webpack

## Facets
- artifact type: learning-resource
- maturity: abandoned
- function: frontend-framework, static-site-generator, build-tool, routing
- domain: web-development, frontend, developer-tools
- platform: cross-platform
- tags: polymer, web-components, starter-kit, template, prpl-pattern, pwa, service-worker, app-layout, boilerplate, nodejs, web-server

## Member repositories
- Polymer/polymer-starter-kit (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:51.086364+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 2026-08-30T08:31:50.265978+00:00, confidence not recorded.
  - readme: https://github.com/Polymer/polymer-starter-kit (fetched 2026-08-28T04:06:51.086364+00:00, sha 106c2c1cc61b)
  - registry_npm: https://registry.npmjs.org/polymer-starter-kit (fetched 2026-08-29T10:12:56.812446+00:00, sha 0bbf5d3cee5c)
- Data as of 2026-08-30T08:39:29.467469+00:00.