React Native agent v1.9.0

August 24, 2026Download

Breaking change in error reporting

Starting with version 1.9.0, JavaScript errors are reported through a new event type: MobileJSError. With the new Mobile Errors Protocol, React Native JavaScript errors are no longer stored in the MobileHandledException event type.

Action required:

Alerts: Update your NRQL alert conditions to target MobileJSError.
Dashboards: Update any custom charts that query MobileHandledException for JavaScript-layer errors.
Symbolication: Update your build scripts to the latest version to support source map uploads for the new event type. See React Native JavaScript error reporting.
Update your queries as follows:
```
-- Before (1.8.x and lower)
SELECT count(*) FROM MobileHandledException WHERE platform = 'reactnative'

-- After (1.9.0 and higher)
SELECT count(*) FROM MobileJSError
```

Improvements

JavaScript errors and unhandled promise rejections are now reported as a first-class MobileJSError event type via the new Mobile Errors Protocol, instead of MobileHandledException.
Added source map upload support for symbolicating MobileJSError stack traces (automatic, manual, and CodePush/OTA). See React Native JavaScript error reporting.
Added the jsErrorReportingEnabled configuration option to enable or disable JavaScript error reporting (enabled by default).
recordError now accepts optional isFatal and attributes arguments, letting you mark an error as fatal or attach custom attributes.
Updated the native Android agent to version 7.8.2.
Updated the native iOS agent to version 7.7.6.

React Native agent v1.9.0

Breaking change in error reporting

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Improvements