@sentry/react

Official Sentry SDK for ReactJS

Links

• Official SDK Docs

General

This package is a wrapper around @sentry/browser, with added functionality related to React. All methods available in @sentry/browser can be imported from @sentry/react.

To use this SDK, call Sentry.init(options) before you mount your React component.

import React from 'react';
import { createRoot } from 'react-dom/client';
import * as Sentry from '@sentry/react';

Sentry.init({
  dsn: '__DSN__',
  // ...
});

// ...

const container = document.getElementById(“app”);
const root = createRoot(container);
root.render(<App />);

// also works with hydrateRoot
// const domNode = document.getElementById('root');
// const root = hydrateRoot(domNode, reactNode);
// root.render(<App />);

React 19

Starting with React 19, the createRoot and hydrateRoot methods expose error hooks that can be used to capture errors automatically. Use the Sentry.reactErrorHandler function to capture errors in the error hooks you are interested in.

const container = document.getElementById(“app”);
const root = createRoot(container, {
  // Callback called when an error is thrown and not caught by an Error Boundary.
  onUncaughtError: Sentry.reactErrorHandler((error, errorInfo) => {
    console.warn('Uncaught error', error, errorInfo.componentStack);
  }),
  // Callback called when React catches an error in an Error Boundary.
  onCaughtError: Sentry.reactErrorHandler(),
  // Callback called when React automatically recovers from errors.
  onRecoverableError: Sentry.reactErrorHandler(),
});
root.render(<App />);

If you want more finely grained control over error handling, we recommend only adding the onUncaughtError and onRecoverableError hooks and using an ErrorBoundary component instead of the onCaughtError hook.

ErrorBoundary

@sentry/react exports an ErrorBoundary component that will automatically send Javascript errors from inside a component tree to Sentry, and set a fallback UI.

app.js

import React from 'react';
import * as Sentry from '@sentry/react';

function FallbackComponent() {
  return <div>An error has occurred</div>;
}

class App extends React.Component {
  render() {
    return (
      <Sentry.ErrorBoundary fallback={FallbackComponent} showDialog>
        <OtherComponents />
      </Sentry.ErrorBoundary>
    );
  }
}

export default App;

Profiler

@sentry/react exports a Profiler component that leverages the tracing features to add React-related spans to transactions. If tracing is not enabled, the Profiler component will not work. The Profiler tracks component mount, render duration and updates.

app.js

import React from 'react';
import * as Sentry from '@sentry/react';

class App extends React.Component {
  render() {
    return (
      <FancyComponent>
        <InsideComponent someProp={2} />
        <AnotherComponent />
      </FancyComponent>
    );
  }
}

export default Sentry.withProfiler(App);

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