---
name: eas-build-setup
description: EAS Build configuration for iOS and Android. Use when setting up cloud builds.
---

# EAS Build Setup Skill

This skill covers EAS Build configuration for React Native apps.

## When to Use

Use this skill when:
- Setting up cloud builds
- Configuring build profiles
- Managing credentials
- Building for app stores

## Core Principle

**CLOUD-FIRST BUILDS** - Let EAS handle the complexity of native builds.

## Installation

```bash
# Install EAS CLI globally
npm install -g eas-cli

# Login to Expo account
eas login

# Initialize EAS in project
eas build:configure
```

## Basic Configuration

```json
// eas.json
{
  "cli": {
    "version": ">= 12.0.0"
  },
  "build": {
    "development": {
      "developmentClient": true,
      "distribution": "internal"
    },
    "preview": {
      "distribution": "internal"
    },
    "production": {}
  },
  "submit": {
    "production": {}
  }
}
```

## Full Configuration

```json
// eas.json
{
  "cli": {
    "version": ">= 12.0.0",
    "appVersionSource": "remote"
  },
  "build": {
    "base": {
      "node": "20.11.0",
      "env": {
        "EXPO_PUBLIC_API_URL": "https://api.example.com"
      }
    },
    "development": {
      "extends": "base",
      "developmentClient": true,
      "distribution": "internal",
      "ios": {
        "simulator": true
      },
      "android": {
        "buildType": "apk"
      },
      "env": {
        "EXPO_PUBLIC_API_URL": "https://api.dev.example.com"
      }
    },
    "preview": {
      "extends": "base",
      "distribution": "internal",
      "ios": {
        "resourceClass": "m-medium"
      },
      "android": {
        "buildType": "apk"
      },
      "channel": "preview",
      "env": {
        "EXPO_PUBLIC_API_URL": "https://api.staging.example.com"
      }
    },
    "production": {
      "extends": "base",
      "autoIncrement": true,
      "ios": {
        "resourceClass": "m-medium"
      },
      "channel": "production",
      "env": {
        "EXPO_PUBLIC_API_URL": "https://api.example.com"
      }
    }
  },
  "submit": {
    "production": {
      "ios": {
        "appleId": "your@email.com",
        "ascAppId": "1234567890",
        "appleTeamId": "ABCD1234"
      },
      "android": {
        "serviceAccountKeyPath": "./google-service-account.json",
        "track": "internal"
      }
    }
  }
}
```

## App Configuration

```typescript
// app.config.ts
import { ExpoConfig, ConfigContext } from 'expo/config';

export default ({ config }: ConfigContext): ExpoConfig => ({
  ...config,
  name: 'My App',
  slug: 'my-app',
  version: '1.0.0',
  orientation: 'portrait',
  icon: './assets/icon.png',
  splash: {
    image: './assets/splash.png',
    resizeMode: 'contain',
    backgroundColor: '#ffffff',
  },
  ios: {
    bundleIdentifier: 'com.company.myapp',
    supportsTablet: true,
    infoPlist: {
      NSCameraUsageDescription: 'This app uses the camera for...',
      NSPhotoLibraryUsageDescription: 'This app accesses photos for...',
    },
  },
  android: {
    package: 'com.company.myapp',
    adaptiveIcon: {
      foregroundImage: './assets/adaptive-icon.png',
      backgroundColor: '#ffffff',
    },
    permissions: [
      'CAMERA',
      'READ_EXTERNAL_STORAGE',
      'WRITE_EXTERNAL_STORAGE',
    ],
  },
  extra: {
    eas: {
      projectId: 'your-project-id',
    },
  },
  owner: 'your-expo-account',
});
```

## Credentials Management

```bash
# iOS credentials
eas credentials --platform ios

# Android credentials
eas credentials --platform android

# View current credentials
eas credentials

# Generate new iOS distribution certificate
eas credentials --platform ios

# Generate new Android keystore
eas credentials --platform android
```

## Build Commands

```bash
# Development build (with dev client)
eas build --profile development --platform ios
eas build --profile development --platform android

# Preview build (internal testing)
eas build --profile preview --platform all

# Production build
eas build --profile production --platform all

# Build with specific message
eas build --profile production --message "Release v1.0.0"

# Local build (without cloud)
eas build --local --platform ios
```

## iOS Specific Configuration

```json
// eas.json - iOS section
{
  "build": {
    "production": {
      "ios": {
        "resourceClass": "m-medium",
        "image": "latest",
        "credentialsSource": "remote",
        "buildConfiguration": "Release"
      }
    }
  }
}
```

### iOS Entitlements

```xml
<!-- ios/MyApp/MyApp.entitlements -->
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>aps-environment</key>
  <string>production</string>
  <key>com.apple.developer.associated-domains</key>
  <array>
    <string>applinks:example.com</string>
  </array>
</dict>
</plist>
```

## Android Specific Configuration

```json
// eas.json - Android section
{
  "build": {
    "preview": {
      "android": {
        "buildType": "apk",
        "gradleCommand": ":app:assembleRelease"
      }
    },
    "production": {
      "android": {
        "buildType": "app-bundle",
        "gradleCommand": ":app:bundleRelease",
        "resourceClass": "medium"
      }
    }
  }
}
```

## Environment Variables

```json
// eas.json
{
  "build": {
    "production": {
      "env": {
        "EXPO_PUBLIC_API_URL": "https://api.example.com",
        "EXPO_PUBLIC_ANALYTICS_ID": "UA-XXXXX-Y"
      }
    }
  }
}
```

```bash
# Or use EAS Secrets for sensitive values
eas secret:create --name API_KEY --value "your-secret-key" --scope project
eas secret:list
```

## Build Hooks

```json
// package.json
{
  "scripts": {
    "eas-build-pre-install": "echo 'Running pre-install hook'",
    "eas-build-post-install": "echo 'Running post-install hook'",
    "eas-build-on-success": "echo 'Build succeeded!'",
    "eas-build-on-error": "echo 'Build failed!'"
  }
}
```

## Internal Distribution

```bash
# Register devices for internal distribution
eas device:create

# List registered devices
eas device:list

# Build for internal distribution
eas build --profile preview --platform ios
```

## Monitoring Builds

```bash
# View build status
eas build:list

# View specific build
eas build:view <build-id>

# Cancel build
eas build:cancel <build-id>

# Download build artifacts
eas build:download --platform ios --latest
```

## CI/CD Integration

```yaml
# .github/workflows/eas-build.yml
name: EAS Build

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Setup EAS
        uses: expo/expo-github-action@v8
        with:
          eas-version: latest
          token: ${{ secrets.EXPO_TOKEN }}

      - name: Build preview
        if: github.event_name == 'pull_request'
        run: eas build --profile preview --platform all --non-interactive

      - name: Build production
        if: github.ref == 'refs/heads/main'
        run: eas build --profile production --platform all --non-interactive
```

## Version Management

```json
// eas.json
{
  "cli": {
    "appVersionSource": "remote"
  },
  "build": {
    "production": {
      "autoIncrement": true
    }
  }
}
```

```bash
# Manually set version
eas build:version:set --platform ios --version 1.2.0 --build-number 45
eas build:version:set --platform android --version 1.2.0 --version-code 45

# Get current version
eas build:version:get --platform ios
```

## Notes

- Use development builds for debugging
- Use preview builds for internal testing
- Use production builds for store submission
- Keep credentials in EAS (remote) for team sharing
- Use EAS Secrets for sensitive environment variables
- Set up CI/CD for automated builds
- Monitor build times and optimize as needed


---
Source attribution: IvanTorresEdge
Original project: https://github.com/IvanTorresEdge/molcajete.ai/blob/be1e8b25920ff4fbc0088419693f5e928c7e7a4d/deprecated/tech-stacks/js/react-native/skills/eas-build-setup/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Dave AI.

## Upstream license notice

Copyright 2025 Ivan Torres

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.


# Dave AI resource metadata

Creator / publisher: IvanTorresEdge
Original project: https://github.com/IvanTorresEdge/molcajete.ai/blob/be1e8b25920ff4fbc0088419693f5e928c7e7a4d/deprecated/tech-stacks/js/react-native/skills/eas-build-setup/SKILL.md
Attribution basis: Recovered original package and original project license at a pinned revision

Fields of work: Development & Engineering, Product Management
Roles: DevOps / SRE, Mobile Developer, Product Manager
Specialties: DevOps, Mobile
Tools: Eas Cli
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: 5c8dd3776dae4be54ffd14c806c033244357225cccc475ac3d8455ad4a90cb03
Metadata reviewed: 2026-10-27
This metadata supersedes earlier Dave AI catalog attribution. Original instruction and supporting files are preserved.