Build fails when there is a JS syntax/import issue

[krisidmisso]

What React Native libraries do you use?

React Native without Frameworks

Are you using sentry.io or on-premise?

sentry.io (SaS)

@sentry/react-native SDK Version

7.8.0

How does your development environment look like?

⬇  Place the `npx react-native@latest info` output here. ⬇

System:
  OS: macOS 26.2
  CPU: (8) arm64 Apple M1 Pro
  Memory: 97.16 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.19.4
    path: /Users/krisidmisso/.nvm/versions/node/v20.19.4/bin/node
  Yarn:
    version: 1.22.22
    path: /Users/username/.yarn/bin/yarn
  npm:
    version: 10.8.2
    path: /Users/username/.nvm/versions/node/v20.19.4/bin/npm
  Watchman:
    version: 2025.02.17.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /opt/homebrew/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 25.1
      - iOS 26.1
      - macOS 26.1
      - tvOS 26.1
      - visionOS 26.1
      - watchOS 26.1
  Android SDK:
    API Levels:
      - "23"
      - "26"
      - "28"
      - "29"
      - "30"
      - "31"
      - "32"
      - "33"
      - "34"
      - "35"
      - "36"
      - "36"
    Build Tools:
      - 28.0.3
      - 30.0.2
      - 30.0.3
      - 31.0.0
      - 32.0.0
      - 33.0.0
      - 33.0.1
      - 33.0.2
      - 34.0.0
      - 35.0.0
      - 35.0.1
      - 36.0.0
      - 36.1.0
    System Images:
      - android-30 | Wear OS 3 ARM 64 v8a
      - android-31 | Google Play ARM 64 v8a
      - android-33 | Google APIs ARM 64 v8a
      - android-34 | Google Play ARM 64 v8a
      - android-36 | Google Play ARM 64 v8a
      - android-TiramisuPrivacySandbox | Google Play ARM 64 v8a
    Android NDK: Not Found
IDEs:
  Android Studio: 2025.1 AI-251.27812.49.2514.14217341
  Xcode:
    version: 26.1/17B55
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.9
    path: /usr/bin/javac
  Ruby:
    version: 2.7.8
    path: /opt/homebrew/opt/ruby@2.7/bin/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 18.0.0
    wanted: 18.0.0
  react:
    installed: 19.0.0
    wanted: 19.0.0
  react-native:
    installed: 0.79.3
    wanted: 0.79.3
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

Sentry.init()

Sentry.init({
  dsn: 'https://...@sentry.io/...'
  // other options
});

Steps to Reproduce

1. Add a non valid import or create a syntax issue in your javascript code
2. Try to build app from XCode
3. See build fails due to source maps not uploaded

Expected Result

Expected to build and let metro to show the error. Maybe create a warning about the issue, or if build fails, be specific why

Actual Result

Build fails without any relevant information, just that the source maps were not uploaded and that I should set the environment variable to skip uploading source maps

[linear]

RN-511