Fixing Expo Dependency Errors in Rork Apps

When you generate a React Native / Expo app with Rork or start setting up a project, you might encounter dependency-related errors like "Invariant Violation" or "Module not found". These errors typically occur when the code generated by Rork expects a specific version of the Expo SDK that doesn't match what's actually installed on your machine.

Why Expo Dependency Errors Occur

The Version Mismatch Problem

Rork generates code based on the latest Expo SDK at the time of generation. However, the installed SDK can drift from this expectation in several ways:

1. Reusing old node_modules — You copied node_modules from a previous project
2. Loose version pinning in package.json — Caret (^) and tilde (~) symbols allow automatic version updates
3. Incomplete SDK upgrades — You started upgrading from Expo v48 to v50 but didn't finish
4. Stale npm cache — Your local npm cache contains outdated package versions

Expo's major versions (v48, v49, v50...) introduce significant API and implementation changes, so even a single version difference can cause runtime failures.

Common Error Messages Explained

The most frequent errors you'll encounter fall into these categories:

"Invariant Violation: Native module does not exist"

• Indicates a native module from the SDK is missing
• Usually caused by SDK version mismatch

"Module not found: Can't resolve '@react-native/...'"

• Core React Native library isn't installed properly
• Results from incomplete npm installation

"YellowBox: Tried to register two views with the same name"

• Multiple versions of the same component library are present
• Happens when dependencies weren't fully cleaned before reinstalling

"Unable to resolve module: Navigation is not a function"

• Expo Router is an older version than expected
• Indicates incompatible routing configuration

"Error: EACCES: permission denied"

• Permission issues with node_modules (especially common on Mac)
• Requires npm configuration fixes

All of these resolve by installing the correct versions and validating compatibility.

Solution Step 1: Verify and Fix package.json Versions

Rork specifies the recommended Expo SDK version in your generated package.json. Start by examining it:

{
  "dependencies": {
    "expo": "^52.0.0",
    "react": "18.3.1",
    "react-native": "0.76.1",
    "expo-router": "^3.7.0"
  }
}

Notice the caret symbol (^) before some versions. This is crucial:

• ^52.0.0 → Allows any version from 52.0.0 up to (but not including) 53.0.0
• 52.0.0 → Locks to exactly version 52.0.0

The caret might seem helpful for getting patches, but it often introduces incompatibilities. Remove the caret symbols to lock exact versions:

{
  "dependencies": {
    "expo": "52.0.0",
    "react": "18.3.1",
    "react-native": "0.76.1",
    "expo-router": "3.7.0"
  }
}

After editing, verify compatibility with:

npm install --check

This command compares your package.json against what's actually installed and flags any mismatches.

Solution Step 2: Perform a Clean Reinstall

After pinning versions, you need to completely remove node_modules and reinstall cleanly.

# 1. Remove node_modules and lock file
rm -rf node_modules
rm -rf package-lock.json
 
# 2. Clear npm cache (critical!)
npm cache clean --force
 
# 3. Reinstall from scratch
npm install

Why each step matters:

• Deleting node_modules removes any leftover compiled code
• Clearing npm's cache prevents it from reusing old versions
• Fresh npm install uses only what's in package.json

For Yarn users:

yarn cache clean
yarn install

Solution Step 3: Use Expo's Compatibility Check and Auto-Fix

Expo provides a built-in command to validate and repair dependency compatibility:

npx expo install --check

Sample output:

Checking compatible versions for Expo SDK 52...
✓ expo@52.0.0 is installed
✓ react@18.3.1 is installed
✗ react-native@0.75.1 (expected 0.76.1)
  → Run: npm install react-native@0.76.1

Mismatches found. Running auto-fix...

If mismatches are found, run the auto-fix:

npx expo install --fix

This command automatically adjusts all dependencies to compatible versions for your Expo SDK.

Upgrading Expo SDK: Important Considerations

When upgrading from, say, Expo v50 to v52, follow these guidelines:

Pre-Upgrade Checklist

• Commit your code — Save current changes to git before starting
• Test thoroughly locally — Verify the app works on both iOS and Android before deploying
• Review the changelog — Check the Expo GitHub releases for breaking changes

Upgrade Steps

# 1. Update Expo and related packages
npm install expo@latest
npx expo install --fix
 
# 2. Update Expo CLI globally
npm install --global expo-cli@latest
 
# 3. Test locally with EAS Build before production
eas build --platform ios --local
eas build --platform android --local

Common Upgrade Issues

"react-native has peer dependency issues"

• Cause: Code references APIs that changed in React Native's major version
• Fix: Run npx expo install --fix multiple times, or regenerate affected components in Rork

Unexpected crashes after upgrade

• Often indicates your code uses an outdated API
• Solution: Regenerate the problematic screen or component using Rork

Using Rork's "Fix Now" Feature

When your Rork-generated app encounters dependency issues, you may see a "Fix Now" button in your Rork dashboard. This feature:

1. Automatically checks component compatibility against current Expo versions
2. Generates corrected code for any incompatible components
3. Lets you preview changes before applying them to your project

For complex version issues, start with Rork's automatic repair before diving into manual npm commands.

What's Next?

Once dependency errors are resolved, deepen your understanding of Rork's architecture:

• Expo Router Navigation Guide — Master tab, stack, and drawer navigation patterns
• React Native Expo Runtime Error Fixes — Address runtime crashes and edge cases
• React Native Expo Architecture — Understand the full technology stack

Happy coding with Rork and Expo!

Recommended Reading:

• Expo Official Documentation — The authoritative reference for Expo APIs and releases