# callstack/react-native-builder-bob

Simple set of CLIs to scaffold and build React Native libraries for different targets

Repository: https://github.com/callstack/react-native-builder-bob
Canonical: https://ross.abutalabs.com/products/react-native-builder-bob
Homepage: http://oss.callstack.com/react-native-builder-bob/
Language: JavaScript
License Family: other
Topics: react-native, template, hacktoberfest
Last push: 2026-08-04T15:12:38+00:00

## Health v2 (maintenance only)
Score: 90/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 96, release rhythm 77, longevity 100
- inputs: {"age_days": 2718, "days_push": 29, "days_rel": 78, "gap_med": 0.0, "n_releases_24m": 149}
- 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 3225, forks 225 (observed 2026-08-28T04:07:49.916761+00:00)

## What it is
A set of CLIs from Callstack to scaffold and build React Native libraries for multiple targets. It includes create-react-native-library for generating pre-configured library templates and react-native-builder-bob for compiling libraries to work with Metro, Webpack, Vite, and Node.js.

## Use cases
- scaffold a new react native library
- build a react native library for multiple targets
- create a turbo module template
- compile react native library for web and node
- set up a react native library project with preconfigured tooling
- build js files for a react native package

## When to choose
- you are developing an open-source or internal React Native library and want standard build output for Metro, Webpack, and Vite
- you want to bootstrap a new React Native library with Turbo Module or Nitro Module templates

## When to avoid
- you are building a React Native app rather than a reusable library
- you need a fully custom bundling setup outside Bob's supported targets

## Facets
- artifact type: cli-tool
- maturity: active
- function: build-tool, cli, boilerplate, developer-tools
- domain: developer-tools, mobile-development, cross-platform
- platform: cli, cross-platform
- tags: react-native, library-scaffolding, turbo-modules, nitro-modules, monorepo, nodejs

## Member repositories
- callstack/react-native-builder-bob (main) score 90

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:49.916761+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 2026-08-29T18:44:16.948504+00:00, confidence not recorded.
  - readme: https://github.com/callstack/react-native-builder-bob (fetched 2026-08-28T04:07:49.916761+00:00, sha 4c61512deabb)
  - homepage: http://oss.callstack.com/react-native-builder-bob/ (fetched 2026-08-29T09:37:56.422743+00:00, sha 1578a7de4e98)
  - registry_npm: https://registry.npmjs.org/react-native-builder-bob (fetched 2026-08-29T09:37:56.431804+00:00, sha 13a2d67039bf)
- Data as of 2026-08-30T08:39:29.467469+00:00.