Error loading Metro config in Expo #5957
Description
What React Native libraries do you use?
Expo (mobile only)
Are you using sentry.io or on-premise?
sentry.io (SaS)
Are you using any other error monitoring solution alongside Sentry?
No
Other Error Monitoring Solution Name
No response
@sentry/react-native SDK Version
8.7.0
How does your development environment look like?
System:
OS: macOS 26.2
CPU: (10) arm64 Apple M1 Pro
Memory: 218.30 MB / 32.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 22.22.0
path: /usr/local/bin/node
Yarn:
version: 4.6.0
path: /opt/homebrew/bin/yarn
npm:
version: 10.9.4
path: /usr/local/bin/npm
Watchman:
version: 2025.05.26.00
path: /opt/homebrew/bin/watchman
Managers:
CocoaPods:
version: 1.16.2
path: /Users/artemabashev/.rbenv/shims/pod
SDKs:
iOS SDK:
Platforms:
- DriverKit 25.4
- iOS 26.4
- macOS 26.4
- tvOS 26.4
- visionOS 26.4
- watchOS 26.4
Android SDK:
API Levels:
- "19"
- "23"
- "24"
- "26"
- "29"
- "30"
- "31"
- "32"
- "33"
- "34"
- "35"
- "36"
Build Tools:
- 30.0.2
- 31.0.0
- 33.0.0
- 33.0.0
- 33.0.0
- 34.0.0
- 35.0.0
- 36.1.0
System Images:
- android-19 | ARM EABI v7a
- android-21 | ARM EABI v7a
- android-21 | Intel x86 Atom
- android-21 | Google APIs ARM 64 v8a
- android-23 | Android TV ARM EABI v7a
- android-23 | Android TV Intel x86 Atom
- android-23 | ARM 64 v8a
- android-23 | Google APIs ARM EABI v7a
- android-29 | Google APIs ARM 64 v8a
- android-30 | Android TV Intel x86 Atom
- android-31 | Android TV ARM 64 v8a
- android-32 | Google APIs ARM 64 v8a
- android-36 | Google APIs ARM 64 v8a
- android-37.0 | Pre-Release 16 KB Page Size Google Play ARM 64 v8a
Android NDK: Not Found
IDEs:
Android Studio: 2025.3 AI-253.30387.90.2532.14935130
Xcode:
version: 26.4/17E192
path: /usr/bin/xcodebuild
Languages:
Java:
version: 17.0.15
path: /usr/bin/javac
Ruby:
version: 3.3.4
path: /Users/artemabashev/.rbenv/shims/ruby
npmPackages:
"@react-native-community/cli":
installed: 20.1.3
wanted: ^20.1.3
react:
installed: 19.2.0
wanted: 19.2.0
react-native:
installed: 0.83.4
wanted: 0.83.4
react-native-macos: Not Found
npmGlobalPackages:
"*react-native*": Not Found
Android:
hermesEnabled: true
newArchEnabled: true
iOS:
hermesEnabled: true
newArchEnabled: true
Sentry.init()
N/A
Steps to Reproduce
Use Metro config in Expo 55:
const { getDefaultConfig } = require('expo/metro-config');
const { withSentryConfig } = require('@sentry/react-native/metro');
const config = getDefaultConfig(__dirname);
module.exports = withSentryConfig(config);then run expo start
Expected Result
App builds normally.
Running npm i --save-dev metro fixes the issue.
Actual Result
Error: Error loading Metro config at: /Users/artemabashev/Projects/app/frontend/mobile/metro.config.js
Cannot find module 'metro/src/DeltaBundler/Serializers/baseJSBundle'
Require stack:
- /Users/artemabashev/Projects/app/frontend/mobile/node_modules/@sentry/react-native/dist/js/tools/vendor/metro/utils.js
- /Users/artemabashev/Projects/app/frontend/mobile/node_modules/@sentry/react-native/dist/js/tools/sentryMetroSerializer.js
- /Users/artemabashev/Projects/app/frontend/mobile/node_modules/@sentry/react-native/dist/js/tools/metroconfig.js
- /Users/artemabashev/Projects/app/frontend/mobile/node_modules/@sentry/react-native/metro.js
- /Users/artemabashev/Projects/app/frontend/mobile/metro.config.js
- ```