No. A Go backend SDK cannot capture exceptions that occur in a visitor’s browser. To track React failures and Go service errors together, instrument both runtimes: use a browser-side SDK for React and browser events, and a Go SDK or telemetry instrumentation for the backend.
Why Go instrumentation cannot see React errors
React runs in the visitor’s browser; Go runs on your server. They are separate runtimes, and a Go process cannot directly observe a JavaScript exception or rejected promise in someone’s browser. A Go-only installation can report errors and telemetry from the service, but it does not cover failures that happen in the React application.
To get a fuller picture of an incident, send client-side and server-side events to an operational destination that can receive both. Shared release and environment context can help you relate the reports, but it does not make one SDK capture errors from the other runtime.
Which React failures need browser-side capture?
Errors while rendering a component tree
A React error boundary can display fallback UI and report JavaScript errors thrown inside the part of the component tree it wraps. The Sentry React guide describes this pattern for React 16 and later using Sentry.ErrorBoundary. A boundary is scoped to its wrapped tree; it is not a universal catcher for every browser failure.
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Uncaught exceptions and rejected promises
The Sentry React SDK documents automatic global handlers for uncaught exceptions and unhandled promise rejections. Third-party promise libraries may need configuration attention, and browser security restrictions on cross-origin scripts can prevent errors from being reported.
Minified production code
Production bundles are often transpiled or minified, which can make stack traces difficult to map back to the code developers recognize. Uploading source maps for the frontend build lets the monitoring service associate generated code with original sources. Review source fetching and security settings for your deployment.
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Practical paired setup with Sentry
Sentry documents SDKs for both React and Go, making a paired setup one direct way to collect browser and backend events in the same service. The React guide available at Sentry’s React documentation has a legacy footer identifying version 5.25.0, so check the current guide and package version for exact APIs before implementing. The setup below describes the documented approach, not a guarantee that every signature is unchanged.
- Install and initialize the browser SDK. Add
@sentry/reactto the frontend and initialize it as early as practical, before initializing the React app. The guide showsSentry.init({ dsn: ... }); the DSN identifies where the SDK sends events. - Wrap the component area that needs fallback UI. Use
Sentry.ErrorBoundaryaround the relevant tree. Errors inside that wrapped tree can be reported while the boundary renders fallback UI. - Set browser release and environment context. Use consistent release naming across the client and backend where practical. Release information helps identify regressions and connect errors with suspect changes.
- Upload frontend source maps. Configure the build and deployment to upload maps so production stack traces can be related to original source files. Check the service’s source-fetching and security options.
- Instrument the Go service separately. Add
sentry-goand initialize it with a DSN and options. The Sentry Go documentation describes error reporting, performance tracking, and HTTP server and framework integrations. When values are not provided at initialization, the SDK can readSENTRY_DSN,SENTRY_RELEASE, andSENTRY_ENVIRONMENT. - Choose production transaction sampling deliberately. If you enable performance transactions in the React SDK, do not leave an example configuration that sends every captured transaction in production without considering volume and quota. The guide recommends lowering the sample rate or using a sampler.
With both SDKs configured, browser failures are reported by the frontend and service failures by the Go backend. Confirm that each SDK is sending the event types you need, and that release and environment values are useful and consistent for your team.
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How the main approaches differ
| Approach | Runtime coverage | Browser maturity and trade-off |
|---|---|---|
| Sentry React SDK plus Sentry Go SDK | React/browser events and Go service errors in Sentry | Direct paired vendor-SDK path; verify current package APIs and service terms. |
| OpenTelemetry in both runtimes | Go telemetry and JavaScript telemetry, including browser environments | Vendor-neutral direction, but OpenTelemetry says browser client instrumentation is “experimental and mostly unspecified.” Evaluate the specific instrumentation and exporter path for your error-capture needs. |
| Go-only SDK or instrumentation | Go service errors and telemetry | Does not capture React or other browser exceptions. |
These options should also be assessed for source-map support, release and environment context, data controls, production sampling, and whether one operational destination can receive client and server events. The cited documentation does not establish comparative prices or plan limits.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.When OpenTelemetry is a better fit—and its browser caveat
OpenTelemetry may suit teams that want vendor-neutral instrumentation across services. Its Go documentation covers metrics, logs, and traces; traces and metrics are marked stable, while logs are at release-candidate status. Its JavaScript documentation covers Node.js and browser environments, with traces and metrics stable and logs in development.
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However, the OpenTelemetry project cautions that “Client instrumentation for the browser is experimental and mostly unspecified.” That matters if the goal is a polished browser error-capture workflow rather than general telemetry. Before choosing this route, check the specific browser instrumentation and exporter you plan to use, and verify that they cover the React failures and diagnostic context your team needs.
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