# ing-bank/lion

Fundamental white label web component features for your design system.

Repository: https://github.com/ing-bank/lion
Canonical: https://ross.abutalabs.com/products/lion
Homepage: https://lion.js.org
Language: JavaScript
License: MIT
License Family: permissive
Topics: hacktoberfest, lion, lit-html, javascript, web-components, modern-web, open-wc
Last push: 2026-08-20T18:09:19+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 98, release rhythm 86, longevity 100
- inputs: {"age_days": 2701, "days_push": 13, "days_rel": 13, "gap_med": 7, "n_releases_24m": 66}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1960, forks 349 (observed 2026-08-28T04:05:59.331234+00:00)

## What it is
Lion is a set of highly performant, accessible, white-label Web Components built on LitElement, intended as a foundation for building your own design system. It ships both Web Components and JavaScript classes that are unopinionated and designed to be extended rather than used as-is.

## Use cases
- build a custom design system on accessible web components
- create white-label form components without overriding styles
- make my web app WCAG 2.2 AA compliant
- extend accessible input, select, and dialog components
- use framework-agnostic UI components in any frontend stack
- reuse component documentation across products

## When to choose
- you want a styling-agnostic foundation to build a design system on
- accessibility compliance (WCAG/WAI-ARIA) is a hard requirement
- you prefer standards-based Web Components over framework-specific UI kits
- you need small, fast components with minimal dependencies

## When to avoid
- you want ready-made, fully styled components out of the box
- your team is not comfortable extending and maintaining a component layer
- you need a component library tied to a specific framework like React or Vue

## Facets
- artifact type: library
- maturity: active
- function: ui-components, frontend-framework, form-handling, accessibility
- domain: web-development, frontend, web-design, developer-tools
- platform: browser, cross-platform
- tags: web-components, design-system, lit-html, white-label, wcag, open-wc, es-modules, web-server, nodejs

## Member repositories
- ing-bank/lion (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:59.331234+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 2026-08-30T03:05:46.264673+00:00, confidence not recorded.
  - readme: https://github.com/ing-bank/lion (fetched 2026-08-28T04:05:59.331234+00:00, sha eb24d0e7de70)
  - homepage: https://lion.js.org (fetched 2026-08-29T10:46:03.730717+00:00, sha 30770622d276)
  - site_page: https://lion.js.org/about/astro (fetched 2026-08-29T10:46:03.739579+00:00, sha a7e19a76b05e)
  - site_page: https://lion.js.org/about/slack (fetched 2026-08-29T10:46:03.743516+00:00, sha 317114e3035a)
  - site_page: https://lion.js.org/components (fetched 2026-08-29T10:46:03.741859+00:00, sha 21cffe1f79f3)
- Data as of 2026-08-30T08:39:29.467469+00:00.