# uber/baseweb

A React Component library implementing the Base design language

Repository: https://github.com/uber/baseweb
Canonical: https://ross.abutalabs.com/products/baseweb
Homepage: https://baseweb.design
Language: TypeScript
License: MIT
License Family: permissive
Topics: react, component-library, react-components, design-systems
Last push: 2026-07-07T21:30:47+00:00

## Health v2 (maintenance only)
Score: 64/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 91, release rhythm 8, longevity 100
- inputs: {"age_days": 3100, "days_push": 57, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 9002, forks 881 (observed 2026-08-28T04:10:26.730457+00:00)

## What it is
Base Web is a React component library implementing Uber's Base design system, providing modern, responsive, themeable UI components. It is written in TypeScript and uses Styletron for CSS-in-JS styling.

## Use cases
- build a react app with a polished design system
- find accessible react ui components
- theme a react component library to match my brand
- get production-ready react form and input components
- implement uber's base design language in react
- set up a react app with dark and light themes

## When to choose
- you want a mature, TypeScript-first React component library with a cohesive design language
- you need highly themeable components via a provider-based theming system
- you like Styletron-based CSS-in-JS styling

## When to avoid
- you need a library with strong community-driven development, since Uber has limited open-source engagement
- you prefer Tailwind or utility-first styling approaches
- you want a framework-agnostic or non-React solution

## Facets
- artifact type: library
- maturity: maintenance
- function: ui-components, css-framework, frontend-framework
- domain: frontend, web-development, web-design
- platform: cross-platform
- tags: react, design-system, typescript, styletron, component-library, web-server, nodejs

## Member repositories
- uber/baseweb (main) score 64

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:26.730457+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 2026-08-29T17:24:21.646434+00:00, confidence not recorded.
  - readme: https://github.com/uber/baseweb (fetched 2026-08-28T04:10:26.730457+00:00, sha 94add06066b5)
  - homepage: https://baseweb.design (fetched 2026-08-29T08:24:36.457573+00:00, sha 44136fa355b3)
- Data as of 2026-08-30T08:39:29.467469+00:00.