`$app/stores`will be deprecated in SvelteKit 3 (crashing already in prerelease)

[nmontavon]

Is there an existing issue for this?

• I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
• I have reviewed the documentation https://docs.sentry.io/
• I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/sveltekit

SDK Version

@sentry/sveltekit 10.65.0

Framework Version

^@sveltejs/kit@next.7

Link to Sentry event

No response

Reproduction Example/SDK Setup

Sentry.init({
dsn: PUBLIC_SENTRY_DSN,
tracesSampleRate: 1.0,
environment: PUBLIC_APP_ENV,
release: PUBLIC_RELEASE_VERSION ?? "undefined",
dist: "server",
});

Steps to Reproduce

1. Upgrade to SvelteKit 3 prerelease 7 or newer (https://github.com/sveltejs/kit/releases/tag/%40sveltejs%2Fkit%403.0.0-next.7)
2. launch build with sentry init
3. build succeeds, but crashes client-side in browser:

Uncaught (in promise) Error: $app/storeshas been removed in favour of$app/state. See https://svelte.dev/docs/kit/migrating-to-sveltekit-2#SvelteKit-2.12:-$app-stores-deprecated

Expected Result

Migration to $app/state and deprecate Svelte 4 support.

Actual Result

Uncaught (in promise) Error: $app/storeshas been removed in favour of$app/state. See https://svelte.dev/docs/kit/migrating-to-sveltekit-2#SvelteKit-2.12:-$app-stores-deprecated

Additional Context

sveltejs/kit#15499

sveltejs/kit#15406

Priority

_{React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.}

[linear-code]

JS-3043

[sentry-pierre]

Confirmed. @sentry/sveltekit imports page and navigating from $app/stores in packages/sveltekit/src/client/browserTracingIntegration.ts. SvelteKit 3 prerelease 7 removed that module in favor of $app/state, a migration the codebase already has TODO(v11) notes for.

What I checked:

• packages/sveltekit/src/client/browserTracingIntegration.ts is the only production file importing $app/stores
• peerDependencies currently locks @sveltejs/kit to 2.x

A maintainer can take it from here.

[Lms24]

Thanks for writing in! This is already tracked in #18853. We'll fix this in the next major version of the SDK (#22056)

[nmontavon]

Ah nice, thanks - good to know!

I'd advise keeping this issue open until then - SvelteKit 3 seems right around the corner and others may find this useful here.

[Lms24]

yeah I also realized the linked issue doesn't mention sveltekit 3 specifically, so it's still valid to keep this tracked.

Also wondering if we can find a workaround for the current major version of the SDK. I'll forward this internally.