Expo SDK and React Native: Compatibility considerations for third‑party native modules

Answer the question first

1. Upgrade if: the new Expo SDK offers required features, security fixes, or store‑compliance updates AND every third‑party native module you depend on lists support for the SDK’s pinned React Native version (peerDependencies or release notes).
2. Retain the current SDK if: you rely on a native module that currently only supports the older RN version and you cannot afford to re‑test or modify its native code.
3. Incremental upgrades are advisable when: you plan to move across more than one major SDK release or when the new RN version introduces significant API changes that could break native code. Upgrading one SDK at a time keeps the RN delta small and makes debugging easier.

Why the SDK’s RN pin matters

Expo SDK releases bundle a specific React Native version. All expo‑* packages are compiled and tested against that RN release. When the SDK changes, the RN core changes, which invalidates the compatibility guarantees that a third‑party native module had with the previous RN version. Native code is sensitive to RN internals, so breakage risk is higher than for pure‑JavaScript libraries.

Decision criteria in practice

• Feature need: Does the new SDK provide APIs or bug fixes you require?
• Security & store compliance: Older SDKs may drop support for the latest iOS/Android API levels or miss critical patches.
• Peer dependency support: Check each module’s peerDependencies in package.json or its release notes. Look for explicit support of the target RN version.
• Native code complexity: Modules that ship as Expo config plugins or with autolinking are easier to migrate. Modules that require manual native edits carry higher risk.
• Testing budget: Do you have the time to rebuild android/ and ios/ directories and run the full app on both platforms?

How to mitigate upgrade risk

1. Branch strategy: Create a dedicated branch for the SDK bump.
2. Regenerate native projects: Run expo prebuild (or expo eject for bare projects) to rebuild android/ and ios/ from the new SDK.
3. Verify dependencies:

   npx expo-doctor
   expo install --check
   

4. Run the app: Build and launch on both platforms. Manually exercise every feature that uses a third‑party native module.
5. Automate tests: If you have unit or integration tests that cover native code, run them after the upgrade.
6. Merge only when all native paths pass.

When to do incremental upgrades

If you need to jump from, say, SDK 45 to SDK 48, upgrade to SDK 46 first, test, then to 47, and finally to 48. Each step changes the RN version by one or two patch releases, reducing the chance of a sudden incompatibility.

Missing diagnostic detail

Do any of your third‑party native modules require manual native code changes (e.g., custom Java/Kotlin, Objective‑C, or Swift files) rather than being pure‑JS or config‑plugin based?

Summary

Upgrade Expo when the benefits outweigh the risk and when every native dependency declares compatibility with the new RN version. Retain the SDK if you cannot afford to re‑test or modify native code. Use incremental upgrades and a dedicated branch to isolate and resolve issues before merging.