upgrading-expo

References

•./references/new-architecture.md -- SDK +53: New Architecture migration guide

•./references/react-19.md -- SDK +54: React 19 changes (useContext → use, Context.Provider → Context, forwardRef removal)

•./references/react-compiler.md -- SDK +54: React Compiler setup and migration guide

•./references/native-tabs.md -- SDK +55: Native tabs changes (Icon/Label/Badge now accessed via NativeTabs.Trigger.\*)

•./references/expo-av-to-audio.md -- Migrate audio playback and recording from expo-av to expo-audio

•./references/expo-av-to-video.md -- Migrate video playback from expo-av to expo-video

Beta/Preview Releases

Beta versions use .preview suffix (e.g., 55.0.0-preview.2), published under @next tag.

Check if latest is beta: https://exp.host/--/api/v2/versions (look for -preview in expoVersion)

npx expo install expo@next --fix # install beta

`Step-by-Step Upgrade Process`

1. Upgrade Expo and dependencies

npx expo install expo@latest

npx expo install --fix

2. Run diagnostics: npx expo-doctor

3. Clear caches and reinstall

npx expo export -p ios --clear

rm -rf node_modules .expo

watchman watch-del-all

`Breaking Changes Checklist`

•Check for removed APIs in release notes

•Update import paths for moved modules

•Review native module changes requiring prebuild

•Test all camera, audio, and video features

•Verify navigation still works correctly

`Prebuild for Native Changes`

If upgrading requires native changes:

npx expo prebuild --clean

This regenerates the ios and android directories. Ensure the project is not a bare workflow app before running this command.

`Clear caches for bare workflow`

•Clear the cocoapods cache for iOS: cd ios && pod install --repo-update

•Clear derived data for Xcode: npx expo run:ios --no-build-cache

•Clear the Gradle cache for Android: cd android && ./gradlew clean

`Housekeeping`

•Review release notes for the target SDK version at https://expo.dev/changelog

•If using Expo SDK 54 or later, ensure react-native-worklets is installed — this is required for react-native-reanimated to work.

•Enable React Compiler in SDK 54+ by adding "experiments": { "reactCompiler": true } to app.json — it's stable and recommended

•Delete sdkVersion from app.json to let Expo manage it automatically

•Remove implicit packages from package.json: @babel/core, babel-preset-expo, expo-constants.

•If the babel.config.js only contains 'babel-preset-expo', delete the file

•If the metro.config.js only contains expo defaults, delete the file

`Deprecated Packages`

| Old Package | Replacement |

| -------------------- | ---------------------------------------------------- |

| expo-av | expo-audio and expo-video |

| expo-permissions | Individual package permission APIs |

| @expo/vector-icons | expo-symbols (for SF Symbols) |

| AsyncStorage | expo-sqlite/localStorage/install |

| expo-app-loading | expo-splash-screen |

| expo-linear-gradient | experimental_backgroundImage + CSS gradients in View |

When migrating deprecated packages, update all code usage before removing the old package. For expo-av, consult the migration references to convert Audio.Sound to useAudioPlayer, Audio.Recording to useAudioRecorder, and Video components to VideoView with useVideoPlayer.

`expo.install.exclude`

Check if package.json has excluded packages:

{

"expo": { "install": { "exclude": ["react-native-reanimated"] } }

}

Exclusions are often workarounds that may no longer be needed after upgrading. Review each one.

`Removing patches`

Check if there are any outdated patches in the patches/ directory. Remove them if they are no longer needed.

`Postcss`

•autoprefixer isn't needed in SDK +53. Remove it from dependencies and check postcss.config.js or postcss.config.mjs to remove it from the plugins list.

•Use postcss.config.mjs in SDK +53.

`Metro`

Remove redundant metro config options:

•resolver.unstable_enablePackageExports is enabled by default in SDK +53.

•experimentalImportSupport is enabled by default in SDK +54.

•EXPO_USE_FAST_RESOLVER=1 is removed in SDK +54.

•cjs and mjs extensions are supported by default in SDK +50.

•Expo webpack is deprecated, migrate to Expo Router and Metro web.

`New Architecture`

The new architecture is enabled by default, the app.json field "newArchEnabled": true is no longer needed as it's the default. Expo Go only supports the new architecture as of SDK +53.

技能概览

SKILL.md