Upgrading React Native Agent Skill

Upgrading React Native

Overview

Covers the full React Native upgrade workflow: template diffs via Upgrade Helper, dependency updates, Expo SDK steps, and common pitfalls.

Typical Upgrade Sequence

• Route: Choose the right upgrade path via [upgrading-react-native.md][upgrading-react-native]
• Diff: Fetch the canonical template diff using Upgrade Helper via [upgrade-helper-core.md][upgrade-helper-core]
• Dependencies: Assess and update third-party packages via [upgrading-dependencies.md][upgrading-dependencies]
• React: Align React version if upgraded via [react.md][react]
• Expo (if applicable): Apply Expo SDK layer via [expo-sdk-upgrade.md][expo-sdk-upgrade]
• Verify: Run post-upgrade checks via [upgrade-verification.md][upgrade-verification]

# Quick start: detect current version and fetch diff
npm pkg get dependencies.react-native --prefix "$APP_DIR"
npm view react-native dist-tags.latest

# Example: upgrading from 0.76.9 to 0.78.2
# 1. Fetch the template diff
curl -L -f -o /tmp/rn-diff.diff \
  "https://raw.githubusercontent.com/react-native-community/rn-diff-purge/diffs/diffs/0.76.9..0.78.2.diff" \
  && echo "Diff downloaded OK" || echo "ERROR: diff not found, check versions"
# 2. Review changed files
grep -n "^diff --git" /tmp/rn-diff.diff
# 3. Update package.json, apply native changes, then install + rebuild
npm install --prefix "$APP_DIR"
cd "$APP_DIR/ios" && pod install
# 4. Validate: both platforms must build successfully
npx react-native build-android --mode debug --no-packager
xcodebuild -workspace "$APP_DIR/ios/App.xcworkspace" -scheme App -sdk iphonesimulator build

When to Apply

Reference these guidelines when:

• Moving a React Native app to a newer version
• Reconciling native config changes from Upgrade Helper
• Validating release notes for breaking changes

Quick Reference

| File | Description |

|------|-------------|

| [upgrading-react-native.md][upgrading-react-native] | Router: choose the right upgrade path |

| [upgrade-helper-core.md][upgrade-helper-core] | Core Upgrade Helper workflow and reliability gates |

| [upgrading-dependencies.md][upgrading-dependencies] | Dependency compatibility checks and migration planning |

| [react.md][react] | React and React 19 upgrade alignment rules |

| [expo-sdk-upgrade.md][expo-sdk-upgrade] | Expo SDK-specific upgrade layer (conditional) |

| [upgrade-verification.md][upgrade-verification] | Post-upgrade verification checklist, including agent-device-assisted checks |

| [monorepo-singlerepo-targeting.md][monorepo-singlerepo-targeting] | Monorepo and single-repo app targeting and command scoping |

Problem → Skill Mapping

| Problem | Start With |

|---------|------------|

| Need to upgrade React Native | [upgrade-helper-core.md][upgrade-helper-core] |

| Need dependency risk triage and migration options | [upgrading-dependencies.md][upgrading-dependencies] |

| Need React/React 19 package alignment | [react.md][react] |

| Need workflow routing first | [upgrading-react-native.md][upgrading-react-native] |

| Need Expo SDK-specific steps | [expo-sdk-upgrade.md][expo-sdk-upgrade] |

| Need manual or agent-assisted regression validation | [upgrade-verification.md][upgrade-verification] |

| Need repo/app command scoping | [monorepo-singlerepo-targeting.md][monorepo-singlerepo-targeting] |

[upgrading-react-native]: references/upgrading-react-native.md

[upgrade-helper-core]: references/upgrade-helper-core.md

[upgrading-dependencies]: references/upgrading-dependencies.md

[react]: references/react.md

[expo-sdk-upgrade]: references/expo-sdk-upgrade.md

[upgrade-verification]: references/upgrade-verification.md

[monorepo-singlerepo-targeting]: references/monorepo-singlerepo-targeting.md