React Native Update / Pushy / Cresc

Overview

Use this skill to get a project from "not integrated" to "hot update works in release builds".

Prioritize copy-paste-safe steps, smallest viable changes, and explicit verification checkpoints.

Service routing

• Use Pushy for the China service: pushy CLI, new Pushy(...), Pushy dashboard.
• Use Cresc for the global service: cresc CLI, new Cresc(...), Cresc dashboard.
• Keep CLI, dashboard, app records, update.json, and JS client class on the same service. Do not mix pushy createApp with new Cresc(...), or the reverse.
• If the service is unknown, infer from user wording, existing imports, registry/domain, or docs locale. If still unknown, implement the neutral structure and call out the one line the user must choose: Pushy vs Cresc.

Workflow

1. Detect app root, package manager, React Native/Expo versions, service, and target platforms (ios, android, harmony).
2. Read references/integration-playbook.md before giving or applying steps.
3. Install react-native-update and ensure react-native-update-cli is available.
4. Configure native bundle loading for the detected platform and app shape:
• iOS RCTPushy.bundleURL() or Expo auto integration.
• Android UpdateContext.getBundleUrl(...) through ReactHost, ReactNativeHost, or custom instance manager.
• Harmony package/provider/bundle-provider wiring.
• Brownfield runtime hook instead of changing host inheritance.
5. Add a single Pushy or Cresc client outside the root component and wrap the real app tree with UpdateProvider.
6. Run scripts/integration_doctor.sh and fix actionable misses.
7. Finish with release-build verification, baseline upload, and hot-update publish checks when the user wants an end-to-end integration.

Guardrails

• Keep user code changes minimal and localized.
• Do not promise apply-update behavior in debug mode. debug: true can help check/download in development, but applying patches requires a release build.
• Warn about expo-updates conflict in Expo projects.
• Prefer useUpdate() methods and state over direct client calls. Only call the client directly for a clearly necessary low-level integration escape hatch, and explain why.
• Treat checkUpdate() as a trigger, not as the source of truth. Do not branch on its return value; read updateInfo/lastError from useUpdate() in useEffect or render state.
• Preserve existing app architecture; adapt snippets to current project style.
• If native files differ heavily (monorepo/mixed native), provide targeted patch guidance instead of broad rewrites.
• Treat JS/assets as OTA-safe. Native code, native config, native assets, pods, Gradle settings, HAR/AAR/XCFramework contents, and manifests require a new native release and baseline upload.

Outputs to provide

• Minimal integration diff with exact files and snippets.
• Verification checklist: release build, baseline upload, check update, download, switch now/later, rollback behavior.
• Troubleshooting hints for common failures.
• Scenario examples when requested: class component root, custom UI, metaInfo rollout gates, QR/deep-link testing, brownfield integration, canary rollout.

Resources

• Read references/integration-playbook.md before giving steps.
• Use scripts/integration_doctor.sh for quick project diagnosis.