The @sentry/node package is a tool designed for real-time monitoring and fixing crashes in Node.js applications. It provides error tracking and performance monitoring, helping developers to quickly identify, diagnose, and fix problems in their applications. Sentry integrates seamlessly with your existing codebase, offering a range of features to enhance application reliability and user experience.

What are @sentry/node's main functionalities?

Error Tracking

Automatically capture exceptions and errors in your Node.js applications. The code initializes Sentry with your project's DSN and demonstrates how an uncaught exception is automatically reported to Sentry.

const Sentry = require('@sentry/node');
Sentry.init({ dsn: 'YOUR_DSN_HERE' });

app.get('/', function mainHandler(req, res) {
  throw new Error('Broke!');
});

Performance Monitoring

Track the performance of your application, including request times and slow operations. This code sample starts a transaction, simulates an operation with a timeout, and then finishes the transaction, which is then reported to Sentry for performance analysis.

const Sentry = require('@sentry/node');
const transaction = Sentry.startTransaction({ op: 'test', name: 'My First Test Transaction' });

setTimeout(() => {
  transaction.finish();
}, 99);

Custom Event Capturing

Send custom messages or events to Sentry. This is useful for capturing non-exception events that are significant for your application's health monitoring and diagnostics.

const Sentry = require('@sentry/node');

Sentry.captureMessage('Something went wrong', 'error');

Other packages similar to @sentry/node

Readme

Source

Official Sentry SDK for NodeJS (Preview)

WARNING: This SDK is part of an early access preview for the next generation of Sentry JavaScript SDKs. Public interfaces might change and break backwards compatibility from time to time. We absolutely recommend raven in production!

Usage

To use this SDK, call init(options) as early as possible in the main entry module. This will initialize the SDK and hook into the environment. Note that you can turn off almost all side effects using the respective options.

const Sentry = require('@sentry/node');

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

To set context information or send manual events, use the exported functions of @sentry/node. Note that these functions will not perform any action before you have called init():

// Set user information, as well as tags and further extras
Sentry.setExtraContext({ battery: 0.7 });
Sentry.setTagsContext({ user_mode: 'admin' });
Sentry.setUserContext({ id: '4711' });

// Add a breadcrumb for future events
Sentry.addBreadcrumb({
  message: 'My Breadcrumb',
  // ...
});

// Capture exceptions, messages or manual events
Sentry.captureMessage('Hello, world!');
Sentry.captureException(new Error('Good bye'));
Sentry.captureEvent({
  message: 'Manual',
  stacktrace: [
    // ...
  ],
});

Advanced Usage

If you don't want to use a global static instance of Sentry, you can create one yourself:

const { NodeFrontend } = require('@sentry/node');

const client = new NodeFrontend({
  dsn: '__DSN__',
  // ...
});

client.install();
// ...

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Package last updated on 05 Apr 2018

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