delorenj Expo
Progressive discovery. This file is a router. Read only the reference(s) relevant to the current task. Do not load everything upfront.
Routing
Match the task to a reference. Each reference is self-contained.
| Task | Reference |
|---|---|
Build server endpoints with +api.ts |
references/api-routes.md |
Write or edit .eas/workflows/*.yml |
references/cicd-workflows.md |
| Ship to iOS/Android stores or EAS Hosting | references/deployment.md |
| Build a custom Expo Go dev client | references/dev-client.md |
| Integrate the project with Android Studio or VS Code | references/ide-integration.md |
| Write a native module (Swift/Kotlin) or config plugin | references/module.md |
| Set up Tailwind v4 / NativeWind v5 / react-native-css | references/tailwind-setup.md |
| Upgrade Expo SDK, migrate deprecated packages | references/upgrading.md |
If the task spans multiple domains (e.g. "ship an API route to production"), read each reference in turn rather than trying to recall across them.
Quick Decision Flow
Starting something new?
├── New app / feature / module? ───→ module.md (if native) | api-routes.md (if server)
├── Setting up styling? ────────────→ tailwind-setup.md
└── Need IDE configured? ───────────→ ide-integration.md
Testing on device?
└── Need custom native code? ───────→ dev-client.md
Shipping?
├── Automating the pipeline? ──────→ cicd-workflows.md
└── Submitting to a store/host? ───→ deployment.md
Maintaining?
└── SDK bump or package swap? ─────→ upgrading.md
Scripts
The cicd-workflows reference uses Node helpers in scripts/ for schema fetch and YAML validation. Paths are relative to this SKILL.md:
# Fetch a resource (ETag-cached)
node {baseDir}/scripts/fetch.js <url>
# Validate one or more workflow files against the live schema
[ -d "{baseDir}/scripts/node_modules" ] || npm install --prefix {baseDir}/scripts
node {baseDir}/scripts/validate.js <workflow.yml> [workflow2.yml ...]
{baseDir} resolves to the expo/ skill root.
Nested References
Some references have their own supporting files. The overview always lists them:
references/deployment.md→references/deployment/{app-store-metadata,ios-app-store,play-store,testflight,workflows}.mdreferences/module.md→references/module/{native-module,native-view,lifecycle,config-plugin,module-config}.mdreferences/upgrading.md→references/upgrading/{new-architecture,react-19,react-compiler,native-tabs,expo-av-to-audio,expo-av-to-video}.md
Rules for Agents Using This Skill
- Read the router, pick one reference, read it, act.
- Do not prefetch nested references until the overview tells you to.
- Never assume API shape from memory — if the reference cites a schema or official doc, fetch it.
- For API routes and deployment secrets: never commit keys, never return them to the client. See
api-routes.mdfor the enforcement pattern.