React Native Authentication (Expo)

Core Patterns

Expo AuthSession for OAuth

Use expo-auth-session with expo-web-browser for OAuth flows:

import * as AuthSession from 'expo-auth-session';
import * as WebBrowser from 'expo-web-browser';
import * as Google from 'expo-auth-session/providers/google';

// Critical: Call this at module level for proper redirect handling
WebBrowser.maybeCompleteAuthSession();