React Native JavaScript bundles ship inside the app and can be extracted, and Expo inlines EXPO_PUBLIC_ variables into that bundle. Keep secret keys off the device, store session tokens with SecureStore or Keychain, and proxy private API calls.
Inlined into the JavaScript bundle.
Store with expo-secure-store or Keychain wrappers.
Never in app config or bundled files.
It is backed by Keychain on iOS and Keystore on Android.
Large JSON parsing blocks the JS thread and causes dropped frames.
AsyncStorage is unencrypted and readable on compromised devices.
Those values are bundled into the binary.
Ship only a client token in the React Native app and call RealComposer edge URLs that return compact, pre-shaped JSON for each screen.
No. Expo inlines them into the bundle, so treat them as public.
React Native APK and IPA bundles can be disassembled with standard decompilers, exposing hardcoded environment variables. Use RealComposer to store your Stripe Secret Key server-side on Cloudflare Workers and return only safe, slimmed responses to your mobile app.
You should not store Firebase credentials in React Native client code. Client uses anon rules; privileged reads run through edge proxy with Firebase tokens injected. RealComposer Secret Vault injects headers on Cloudflare Workers so only your edge URL is public.
To stitch firebase with clerk session bootstrap, use one RealComposer pipeline with parallel steps. Clerk session and Firebase FCM registration merged at startup. Your React Native app makes one request instead of several sequential upstream calls.
Salesforce payloads are heavy for React Native. Map only id name email and owner fields; drop nested attributes URLs. RealComposer output mapping returns only the fields your UI needs at the edge.
Firebase payloads are heavy for React Native. Remove refresh tokens providerData internals at edge. RealComposer output mapping returns only the fields your UI needs at the edge.
You should not store Linear credentials in React Native client code. iOS and Android call one edge URL for Linear issue lists. RealComposer Secret Vault injects headers on Cloudflare Workers so only your edge URL is public.
Mobile network latency is the delay data experiences traveling between a mobile device and a server over cellular or wireless networks. Radio wake-up time, high round trip times, packet loss, and network switching make mobile requests significantly slower and less predictable than wired connections.
Payload SlimmingPayload Slimming is the technique of stripping unneeded properties, internal metadata, and verbose JSON fields from API responses at the edge before sending them to the client. This reduces response size by 80% to 95%, cutting mobile bandwidth usage, memory overhead, and JSON parsing time.
Client Token (Scoped Bearer Auth)A Client Token is a scoped, revocable authentication credential designed for frontend web and mobile applications. It grants permission to invoke specific edge API pipelines while enforcing allowed-origin domains and rate limits, safely abstracting sensitive upstream API secrets.