Express integration guide

Installation Basic configuration Showing full stacktraces Reporting unhandled errors Reporting handled errors Sending diagnostic data Identifying users Logging breadcrumbs Session tracking Declaring feature flags and experiments Tracking releases Next steps

Library reference

Configuration options

agent apiKey appType appVersion autoDetectErrors autoTrackSessions context enabledBreadcrumbTypes enabledErrorTypes enabledReleaseStages endpoints featureFlags hostname logger metadata onBreadcrumb onError onSession onUncaughtException onUnhandledRejection plugins projectRoot redactedKeys releaseStage reportUnhandledPromiseRejectionsAsHandled sendCode user

Reporting handled errors Customizing error reports Customizing breadcrumbs Capturing sessions Feature flags & experiments AWS Lambda Asynchronous error handling in Node.js Using a proxy Compatibility guide Automatically captured data

Further reading

View @bugsnag/js on GitHub Express example project Changelog Upgrade guide Support

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Compatibility guide

BugSnag is compatible with Node.js 12.17+.