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Sentry

Official Sentry SDK for Svelte

npm version npm dm npm dt typedoc

This SDK is considered experimental and in an alpha state. It may experience breaking changes. Please reach out on GitHub if you have any feedback or concerns. This SDK currently only supports Svelte and is not yet officially compatible with with SvelteKit.

General

This package is a wrapper around @sentry/browser, providing error monitoring and basic performance monitoring features for Svelte.

To use the SDK, initialize Sentry in your Svelte entry point main.js before you bootstrap your Svelte app:

// main.js / main.ts

import App from "./App.svelte";

import * as Sentry from "@sentry/svelte";
import { BrowserTracing } from "@sentry/tracing";

// Initialize the Sentry SDK here
Sentry.init({
  dsn: "__DSN__",
  release: "my-project-name@2.3.12",
  integrations: [new BrowserTracing()],

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

// Then bootstrap your Svelte app
const app = new App({
  target: document.getElementById("app"),
});

export default app;

The Sentry Svelte SDK supports all features from the @sentry/browser SDK. Until it becomes more stable, please refer to the Sentry Browser SDK documentation for more information and usage instructions.

Sourcemaps and Releases

To create releases and upload source maps to Sentry, we recommend using sentry-cli. You can create a bash script to take care of creating a release, uploading source maps and finalizing the release:

#!/bin/bash

VERSION=<your version>
ORG=<your org-slug>
PROJECT=<your project-slug>

SOURCEMAPS_PATH=./dist

sentry-cli releases new $VERSION --org $ORG --project $PROJECT
sentry-cli releases files $VERSION upload-sourcemaps $SOURCEMAPS_PATH --org $ORG --project $PROJECT
sentry-cli releases finalize $VERSION  --org $ORG --project $PROJECT

Please note that the paths provided in this example work for a typical Svelte project that adheres to the project structure set by create-vite with the svelte(-ts) template. If your project setup differs from this template, your configuration may need adjustments. Please refer to our documentation of Advanced sentry-cli Sourcemaps Options and to our Sourcemaps Troubleshooting Guide.