Svelte
Sentry's Svelte SDK enables automatic reporting of errors and exceptions, as well as performance monitoring for your client-side Svelte apps.
Sentry's Svelte SDK was introduced with version 7.10.0
.
On this page, we get you up and running with Sentry's SDK.
Don't already have an account and Sentry
Install
Sentry captures data by using an SDK within your application’s runtime.
npm install --save @sentry/svelte
Configure
Configuration should happen as early as possible in your application's lifecycle.
To use the SDK, initialize it in your Svelte entry point before bootstrapping your app. In a typical Svelte
main.js
or main.ts
file.main.js
import "./app.css";
import App from "./App.svelte";
import * as Sentry from "@sentry/svelte";
// Initialize the Sentry SDK here
Sentry.init({
dsn: "https://examplePublicKey@o0.ingest.sentry.io/0",
integrations: [new Sentry.BrowserTracing(), new Sentry.Replay()],
// Set tracesSampleRate to 1.0 to capture 100%
// of transactions for performance monitoring.
// We recommend adjusting this value in production
tracesSampleRate: 1.0,
// Set `tracePropagationTargets` to control for which URLs distributed tracing should be enabled
tracePropagationTargets: ["localhost", /^https:\/\/yourserver\.io\/api/],
// Capture Replay for 10% of all sessions,
// plus for 100% of sessions with an error
replaysSessionSampleRate: 0.1,
replaysOnErrorSampleRate: 1.0,
});
const app = new App({
target: document.getElementById("app"),
});
export default app;
Once you've done this, the SDK will automatically capture unhandled errors and promise rejections, and monitor performance in the client. You can also manually capture errors.
Add Readable Stack Traces to Errors
Depending on how you've set up your JavaScript
To fix this, upload your source maps to Sentry. The easiest way to do this is to use the Sentry Wizard:
npx @sentry/wizard@latest -i sourcemaps
The wizard will guide you through the following steps:
- Logging into Sentry and selecting a projectRepresents your service in Sentry and allows you to scope events to a distinct application.
- Installing the necessary Sentry packages
- Configuring your build tool to generate and upload source maps
- Configuring your CI to upload source maps
For more information on source maps or for more options to upload them, head over to our Source Maps documentation.
Verify
This snippet includes an intentional error, so you can test that everything is working as soon as you set it up.
SomeCmponent.svelte
<button
type="button"
on:click={() => {
throw new Error("Sentry Frontend Error");
}}
>
Throw error
</button>
This snippet adds a button that throws an error in a Svelte component.
Learn more about manually capturing an error or message in our Usage documentation.
To view and resolve the recorded error, log into sentry.io and open your
Our documentation is open source and available on GitHub. Your contributions are welcome, whether fixing a typo (drat!) to suggesting an update ("yeah, this would be better").
- Package:
- npm:@sentry/svelte
- Version:
- 7.72.0
- Repository:
- https://github.com/getsentry/sentry-javascript