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expo-brownfield

Skill

Framework (OSS). Integrate Expo and React Native into an existing native iOS or Android app. Use when the user mentions brownfield, embedding React Native in a native app, AAR/XCFramework, or adding Expo to an existing Kotlin/Swift project. Covers both the isolated approach and the integrated approa

0Mobile

Install

git clone https://github.com/expo/skills.git ~/.claude/skills/expo-brownfield

What is expo-brownfield?

Framework (OSS). Integrate Expo and React Native into an existing native iOS or Android app. Use when the user mentions brownfield, embedding React Native in a native app, AAR/XCFramework, or adding Expo to an existing Kotlin/Swift project. Covers both the isolated approach and the integrated approach.

What this can do

Capabilities declared in this component's own frontmatter — not inferred.

Inherit all session tools

Declares no tool restrictions — inherits every session tool

~76 tokens of context used while enabled, before you invoke anything

Documentation

README · ~2 min read

Expo Brownfield

A brownfield app is an existing native iOS or Android app that adopts React Native incrementally, as opposed to a greenfield app that is React Native from day one.

Expo supports two distinct ways to add React Native to a brownfield project:

ApproachWhat ships to the native appWhen to choose
IsolatedPrebuilt AAR / XCFrameworkNative team doesn't need Node or RN tooling; RN code can live in a separate repo
IntegratedReact Native sources added to the existing Gradle / CocoaPods buildOne team owns everything; comfortable with RN tooling; wants a single build

For the full decision matrix, see ./references/comparison.md.

Pick an approach

Use these quick rules — fall through to comparison.md for anything ambiguous.

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