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mybigdaymybigday/llama.rn/.agents/skills/upgrade-react-native/SKILL.md

upgrade-react-native

Skill1.1k starsChanged 23 days agoMITView on GitHub

Upgrade React Native version in example/ directory using rn-diff-purge methodology. Use when the user wants to upgrade react-native, migrate to a new RN version, or update React Native dependencies in the example app. Handles diff retrieval, systematic file changes, dependency updates, and conflict resolution.

  • Installs packages

6 other projects use a version of this.

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  • Other versions6 projects use a version of this.

    Word for word · 1

    1. mybigday/whisper.rn★ 809100% same

    Edited · 0

    None found.

    Wrote their own version · 5

    1. Shopify/flash-list★ 7.2ksame name
    2. callstack/repack★ 1.9ksame name
    3. react-native-community/skills★ 27same name
    4. Phaedra-Solutions/cursor-rules★ 4same name
    5. ltatarev/skills★ 0same name

    How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.

  • In this repository3 other files it gives its agents.

The file

We split this skill into the rules it gives an agent

3 rules. 0 are common, 2 are distinctive, and 1 is very specific to this project.

  • 0

    Common

    Most of the 5 edited versions we read keep these.

  • 2

    Distinctive

    This author's own choices. Worth a look.

  • 1

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Actually apply all changes: - do not just list them in a summary

    line 12
  2. Very specific:

    Read example/package.json to identify the current react-native version.

    line 18
  3. Distinctive:

    If diff returns 404: version combination may not exist in rn-diff-purge.

    line 31

“Common” is measured: kept by at least 6 in 10 of the 5 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Upgrade React Native

CRITICAL: File Editing Rules

  • ALWAYS use Edit/Write tools to make changes - never just report what should be changed
  • VERIFY changes were saved by reading the file after editing
  • Actually apply all changes - do not just list them in a summary

Workflow

1. Detect Current Version

Read example/package.json to identify the current react-native version.

2. Fetch Upgrade Diff

curl -s "https://raw.githubusercontent.com/react-native-community/rn-diff-purge/diffs/diffs/{currentVersion}..{toVersion}.diff" | awk '/^GIT binary patch$/,/^diff --git/ {if (/^diff --git/) print; next} 1'

For binary files (e.g., gradle-wrapper.jar):

https://raw.githubusercontent.com/react-native-community/rn-diff-purge/release/{version}/RnDiffApp/android/gradle/wrapper/gradle-wrapper.jar

If diff returns 404: version combination may not exist in rn-diff-purge; suggest alternative paths or manual migration.

3. Analyze Diff

Identify file additions/deletions/modifications, dependency changes, config updates, native code changes (iOS + Android), and breaking changes.

4. Apply Changes Systematically

Order: package.json deps -> config files -> code changes -> iOS native -> Android native. Preserve custom modifications in example/.

5. Update Related Packages

  • react - Check: npm view react-native@{version} peerDependencies.react
  • react-test-renderer - Must match React version
  • @react-native-community/cli - Check compatibility with RN version

6. Install Dependencies

cd example && npm install

For iOS:

cd example/ios && pod install

7. Validate

Rebuild native apps from root directory:

npm run build:ios
npm run build:android

Guidelines

  • Incremental upgrades: For multiple major versions, upgrade incrementally (e.g., 0.72 -> 0.73 -> 0.74).
  • Conflict resolution: Preserve custom functionality, explain conflicts, recommend safest resolution.
  • Never delete custom code without explicit confirmation.
  • Only work within example/ unless explicitly instructed otherwise.
  • Document all changes: Summarize modified/added/deleted files, breaking changes, and manual steps needed.

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