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$app/storeswill be deprecated in SvelteKit 3 (crashing already in prerelease) #22263
Description
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
- Upgrade to SvelteKit 3 prerelease 7 or newer (https://github.com/sveltejs/kit/releases/tag/%40sveltejs%2Fkit%403.0.0-next.7)
- launch build with sentry init
- 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:-$app-stores-deprecated
Additional Context
Priority
React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.
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linear-code commentedon Jul 14, 2026
JS-3043
sentry-pierre commentedon Jul 14, 2026
Confirmed.
@sentry/sveltekitimportspageandnavigatingfrom$app/storesinpackages/sveltekit/src/client/browserTracingIntegration.ts. SvelteKit 3 prerelease 7 removed that module in favor of$app/state, a migration the codebase already hasTODO(v11)notes for.What I checked:
packages/sveltekit/src/client/browserTracingIntegration.tsis the only production file importing$app/storespeerDependenciescurrently locks@sveltejs/kitto2.xA maintainer can take it from here.
Lms24 commentedon Jul 14, 2026
Thanks for writing in! This is already tracked in #18853. We'll fix this in the next major version of the SDK (#22056)
@sentry/svelteand@sentry/sveltekit#18853nmontavon commentedon Jul 14, 2026
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 commentedon Jul 14, 2026
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.
fix(sveltekit): Support browser tracing with SvelteKit 3
fix(sveltekit): Support browser tracing with SvelteKit 3
feat(sveltekit): Support browser tracing with SvelteKit 3 (#22264)
github-actions commentedon Jul 20, 2026
A PR closing this issue has just been released 🚀
This issue was referenced by PR #22264, which was included in the 10.67.0 release.