rn-builder

Audit the dependency tree of an Expo React Native project for known CVEs, outdated packages, license compliance issues, lockfile tampering, and supply-chain risks specific to native modules. Apply ONLY when the task is a dependency-focused security or compliance review — vulnerability triage, pre-submission license check, response to a CVE disclosure, or lockfile diff review. Do NOT apply for routine `npm install`, package additions, or version bumps that are part of normal feature work.

Bridge native iOS (Swift) and Android (Kotlin) code into Expo React Native apps. Prefer the Expo Modules API for new modules; fall back to React Native Turbo Modules only when Expo Modules cannot express the requirement. Apply when wrapping a native SDK, exposing platform APIs, or writing a config plugin.

Build, sign, and ship Expo React Native apps to the App Store and Google Play via EAS (Expo Application Services). Covers EAS Build profiles, EAS Submit, EAS Update (OTA), iOS and Android code signing, and store metadata. Apply when configuring build pipelines, releasing to production, setting up OTA updates, or troubleshooting signing.

Scaffold and wire up a new Expo (managed) React Native project using curated menus per concern. The agent presents 2-5 vetted alternatives for each of navigation, state, server data, styling, storage, forms, lists, animations, auth, and observability — and implements whichever the user picks. Apply when creating a new project, adding a core library, restructuring folders, or wiring up an unmet concern in an existing project.

Audit Expo React Native apps for mobile-specific security issues — JS bundle secret leakage, insecure storage of tokens, unvalidated deep links, WebView misconfiguration, over-broad native permissions, and OWASP MASVS gaps. Apply ONLY when the task explicitly asks for a security review, threat model, store-submission security check, or remediation of a known mobile vulnerability. Do NOT apply for general code review, performance work, or routine feature work.

Test strategy and setup for Expo React Native apps. Jest + React Native Testing Library for unit/component tests, Maestro for end-to-end. Apply when writing tests, configuring CI test runs, or mocking native modules.