JavaScript

On this page, we get you up and running with Sentry's SDK, so that it will automatically report errors and exceptions in your application.

Don't already have an account and Sentry project established? Head over to sentry.io, then return to this page.

Install

Sentry captures data by using an SDK within your application’s runtime.

# Using yarn
yarn add @sentry/browser @sentry/tracing
# Using npm
npm install --save @sentry/browser @sentry/tracing

Configure

Configuration should happen as early as possible in your application's lifecycle.

import * as Sentry from "@sentry/browser";
import { Integrations } from "@sentry/tracing";

Sentry.init({
  dsn: "https://examplePublicKey@o0.ingest.sentry.io/0",

  // Alternatively, use `process.env.npm_package_version` for a dynamic release version
  // if your build tool supports it.
  release: "my-project-name@2.3.12",
  integrations: [new Integrations.BrowserTracing()],

  // Set tracesSampleRate to 1.0 to capture 100%
  // of transactions for performance monitoring.
  // We recommend adjusting this value in production
  tracesSampleRate: 1.0,

});

Verify

This snippet includes an intentional error, so you can test that everything is working as soon as you set it up:

myUndefinedFunction();

To view and resolve the recorded error, log into sentry.io and open your project. Clicking on the error's title will open a page where you can see detailed information and mark it as resolved.