create-react-native-library

Scaffolds React Native libraries with create-react-native-library for standalone libraries or local native modules and views. Use when creating or working on React Native libraries or adding native functionality in an existing app.

Compatible avec~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/callstackincubator/agent-skills/tree/main/skills/create-react-native-library

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Documentation

Create React Native Library

Overview

Use this skill to scaffold a standalone React Native library or a local library inside an existing app, then continue with the correct implementation docs.

Examples:

  • JS-only library that may use other React Native libraries
  • Native modules that expose native functionality to JavaScript
  • Native UI components that render native views in React Native

Choose one flow first:

When to Apply

Use this skill when:

  • Creating or working on a React Native library with create-react-native-library
  • Creating a native module or view in an existing app
  • Wrapping native SDKs and exposing them to React Native

Quick Reference

# Inspect current options before scaffolding
npx create-react-native-library@latest --help

# Scaffold a library with turbo modules and the Expo example app
npx create-react-native-library@latest awesome-library \
  --no-interactive \
  --yes \
  --description "A brief description of the library" \
  --type turbo-module \
  --languages kotlin-objc \
  --example expo

# Scaffold a local Turbo Module inside an existing app
cd MyApp
npx create-react-native-library@latest awesome-library \
  --local \
  --no-interactive \
  --yes \
  --description "A brief description of the library" \
  --type turbo-module \
  --languages kotlin-objc

References

FileDescription
scaffold-library.mdScaffold a new library and default to the Expo example
local-library.mdAdd a local library to an existing app with autolinking

Problem -> Skill Mapping

ProblemStart With
Need a new library scaffoldscaffold-library
Need to add a local native library to an applocal-library

Individual skills in this repo

This repo contains 12 individual skills — each has its own dedicated page.

agent-device

Automates interactions for Apple-platform apps (iOS, tvOS, macOS) and Android devices. Use when navigating apps, taking snapshots/screenshots, tapping, typing, scrolling, or extracting UI info across mobile, TV, and desktop targets.

callstackincubator/github

GitHub patterns using gh CLI for pull requests, stacked PRs, code review, branching strategies, and repository automation. Use when working with GitHub PRs, merging strategies, or repository management tasks.

callstackincubator/github-actions

GitHub Actions workflow patterns for React Native iOS simulator and Android emulator cloud builds with downloadable artifacts. Use when setting up CI build pipelines or downloading GitHub Actions artifacts via gh CLI and GitHub API.

callstackincubator/react-native-brownfield-migration

Provides an incremental adoption strategy to migrate native iOS or Android apps to React Native or Expo using @callstack/react-native-brownfield for initial setup. Use when planning migration steps, packaging XCFramework/AAR artifacts, and integrating them into host apps.

callstackincubator/upgrading-react-native

Upgrades React Native apps to newer versions by applying rn-diff-purge template diffs, updating package.json dependencies, migrating native iOS and Android configuration, resolving CocoaPods and Gradle changes, and handling breaking API updates. Use when upgrading React Native, bumping RN version, updating from RN 0.x to 0.y, or migrating Expo SDK alongside a React Native upgrade.

callstackincubator/validate-skills

Validates skills in this repo against agentskills.io spec and Claude Code best practices. Use via /validate-skills command.

dogfood

Systematically explore and test a mobile app on iOS/Android with agent-device to find bugs, UX issues, and other problems. Use when asked to "dogfood", "QA", "exploratory test", "find issues", "bug hunt", or "test this app" on mobile. Produces a structured report with reproducible evidence: screenshots, optional repro videos, and detailed steps for every issue.

react-native-best-practices

Provides React Native performance optimization guidelines for FPS, TTI, bundle size, memory leaks, re-renders, and animations. Applies to tasks involving Hermes optimization, JS thread blocking, bridge overhead, FlashList, native modules, or debugging jank and frame drops.

react-native-testing

Write tests using React Native Testing Library (RNTL) v13 and v14 (`@testing-library/react-native`). Use when writing, reviewing, or fixing React Native component tests. Covers: render, screen, queries (getBy/getAllBy/queryBy/findBy), Jest matchers, userEvent, fireEvent, waitFor, and async patterns. Supports v13 (React 18, sync render) and v14 (React 19+, async render). Triggers on: test files for React Native components, RNTL imports, mentions of "testing library", "write tests", "component tests", or "RNTL".

react-navigation

Provides React Navigation UI patterns for stacks, tabs, drawers etc. Use when building navigation UIs with React Navigation, configuring headers, bottom sheets or handling safe areas and insets.

validate-skills

Validates skills in this repo against agentskills.io spec and Claude Code best practices. Use via /validate-skills command.

vercel-react-native-skills

React Native and Expo best practices for building performant mobile apps. Use when building React Native components, optimizing list performance, implementing animations, or working with native modules. Triggers on tasks involving React Native, Expo, mobile performance, or native platform APIs.

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