feat(sveltekit): Serve the managed tunnel from `sentryHandle` under the app's base path by logaretm · Pull Request #25415 · getsentry/sentry-javascript

logaretm · 2026-10-15T15:33:50Z

Implements sveltekit tunnel wiring, the way it works is:

Our Vite plugin injects the base path if it exists to both server/client bundles.
Our entry handler will check for any incoming request if it is a tunneled one, and if it matches it handles it.

(I made the decision to respect base paths rather than ignoring them, this is something to review in #25199)

closes #20256

github-actions · 2026-10-15T15:44:53Z

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	31.03 kB	+3.87%	+1.16 kB 🔺
@sentry/browser - with treeshaking flags	28.82 kB	+2.87%	+803 B 🔺
@sentry/browser - with treeshaking flags tracing without tracing	28.72 kB	+2.86%	+798 B 🔺
@sentry/browser (incl. Tracing)	53.24 kB	+2.26%	+1.17 kB 🔺
@sentry/browser (incl. Tracing + Span Streaming)	53.24 kB	+2.24%	+1.17 kB 🔺
@sentry/browser (incl. Tracing, Profiling)	56.24 kB	+2.24%	+1.23 kB 🔺
@sentry/browser (incl. Tracing, Replay)	92.99 kB	+1.28%	+1.17 kB 🔺
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	81.48 kB	+1%	+799 B 🔺
@sentry/browser (incl. Tracing, Replay with Canvas)	97.74 kB	+1.24%	+1.19 kB 🔺
@sentry/browser (incl. Tracing, Replay, Feedback)	110.67 kB	+1.09%	+1.19 kB 🔺
@sentry/browser (incl. Feedback)	48.6 kB	+2.55%	+1.21 kB 🔺
@sentry/browser (incl. sendFeedback)	36.12 kB	+3.37%	+1.18 kB 🔺
@sentry/browser (incl. FeedbackAsync)	41.25 kB	+3%	+1.2 kB 🔺
@sentry/browser (incl. Metrics)	32.03 kB	+3.65%	+1.13 kB 🔺
@sentry/browser (incl. Logs)	32.32 kB	+3.65%	+1.14 kB 🔺
@sentry/browser (incl. Metrics & Logs)	33.01 kB	+3.78%	+1.2 kB 🔺
@sentry/react	32.84 kB	+3.58%	+1.13 kB 🔺
@sentry/react (incl. Tracing)	55.52 kB	+2.08%	+1.13 kB 🔺
@sentry/vue	39.21 kB	+3.09%	+1.17 kB 🔺
@sentry/vue (incl. Tracing)	56.25 kB	+2.26%	+1.24 kB 🔺
@sentry/svelte	31.06 kB	+3.88%	+1.16 kB 🔺
@sentry/remix (Remix 3 client bundle)	58.28 kB	+2.11%	+1.2 kB 🔺
CDN Bundle	32.36 kB	+2.27%	+716 B 🔺
CDN Bundle (incl. Tracing)	53.3 kB	+1.38%	+723 B 🔺
CDN Bundle (incl. Logs, Metrics)	34.55 kB	+2.13%	+718 B 🔺
CDN Bundle (incl. Tracing, Logs, Metrics)	55.25 kB	+1.34%	+728 B 🔺
CDN Bundle (incl. Replay, Logs, Metrics)	75.52 kB	+1.01%	+751 B 🔺
CDN Bundle (incl. Tracing, Replay)	90.97 kB	+0.8%	+717 B 🔺
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)	92.96 kB	+0.86%	+785 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback)	97.14 kB	+0.77%	+737 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)	99.14 kB	+0.81%	+792 B 🔺
CDN Bundle - uncompressed	95.04 kB	+2%	+1.86 kB 🔺
CDN Bundle (incl. Tracing) - uncompressed	157.88 kB	+1.19%	+1.85 kB 🔺
CDN Bundle (incl. Logs, Metrics) - uncompressed	101.58 kB	+1.87%	+1.86 kB 🔺
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed	163.84 kB	+1.15%	+1.85 kB 🔺
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed	231.62 kB	+0.82%	+1.86 kB 🔺
CDN Bundle (incl. Tracing, Replay) - uncompressed	278.05 kB	+0.67%	+1.85 kB 🔺
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed	283.99 kB	+0.66%	+1.85 kB 🔺
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	291.75 kB	+0.64%	+1.85 kB 🔺
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed	297.69 kB	+0.63%	+1.85 kB 🔺
@sentry/nextjs (client)	57.92 kB	+1.98%	+1.12 kB 🔺
@sentry/sveltekit (client)	53.67 kB	+2.34%	+1.23 kB 🔺
@sentry/core/server	41.85 kB	+1.78%	+730 B 🔺
@sentry/core/browser	13.81 kB	-	-
@sentry/node	153.84 kB	+0.5%	+757 B 🔺
@sentry/node/import (ESM hook with diagnostics-channel injection)	84.04 kB	-	-
@sentry/node - without tracing	95.58 kB	+0.75%	+709 B 🔺
@sentry/node - without channel injection	131.89 kB	+0.57%	+747 B 🔺
@sentry/aws-serverless	103.84 kB	+0.79%	+804 B 🔺
@sentry/cloudflare (withSentry) - minified	212.53 kB	+0.92%	+1.93 kB 🔺
@sentry/cloudflare (withSentry)	526.33 kB	+0.73%	+3.8 kB 🔺
@sentry/nextjs/cloudflare (withSentry) - minified	230.21 kB	+0.85%	+1.93 kB 🔺

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logaretm · 2026-10-15T21:56:04Z

bugbot run

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logaretm · 2026-10-16T02:14:46Z

bugbot run

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Stale Bugbot comment from a previous run.

logaretm · 2026-10-16T02:25:57Z

bugbot run

cursor

✅ Bugbot reviewed your changes and found no new issues!

1 issue from previous review remains unresolved.

Comment @cursor review or bugbot run to trigger another review on this PR

^{Reviewed by Cursor Bugbot for commit 89e93d5. Configure here.}

…he app's base path `sentryHandle` answers tunnel requests before isolation, tracing and routing. `sentrySvelteKit()` hands `paths.base` to the client and server SDKs, so `tunnel: true` works under a base path without repeating it.

logaretm added this pull request to stack #25201 October 15, 2026 15:33

logaretm force-pushed the awad/tunnel-sveltekit branch 2 times, most recently from 364f99c to b6212f2 Compare October 15, 2026 15:36

logaretm force-pushed the awad/tunnel-sveltekit branch 2 times, most recently from de28310 to 47c1f76 Compare October 15, 2026 16:20

logaretm force-pushed the awad/tunnel-sveltekit branch from 47c1f76 to d1a7e32 Compare October 15, 2026 16:38

logaretm force-pushed the awad/tunnel-sveltekit branch from d1a7e32 to 17f5b0c Compare October 15, 2026 17:15

logaretm force-pushed the awad/tunnel-sveltekit branch from 17f5b0c to ff9f3cc Compare October 15, 2026 17:36

logaretm force-pushed the awad/tunnel-sveltekit branch 2 times, most recently from 7185904 to 0846a80 Compare October 15, 2026 18:16

logaretm force-pushed the awad/tunnel-sveltekit branch from 0846a80 to 2d31aba Compare October 15, 2026 18:26

logaretm force-pushed the awad/tunnel-sveltekit branch from 2d31aba to d7b1800 Compare October 15, 2026 18:28

cursor Bot reviewed Oct 15, 2026

View reviewed changes

Comment thread packages/sveltekit/test/vite/tunnelBasePath.test.ts

Comment thread dev-packages/e2e-tests/test-applications/sveltekit-3/tests/tunnel.test.ts

logaretm force-pushed the awad/tunnel-sveltekit branch from d7b1800 to 1d49365 Compare October 16, 2026 01:51

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Comment thread packages/sveltekit/src/vite/tunnelBasePath.ts Outdated

logaretm force-pushed the awad/tunnel-sveltekit branch from 1d49365 to 89e93d5 Compare October 16, 2026 02:25

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logaretm force-pushed the awad/tunnel-sveltekit branch 2 times, most recently from 008ebec to e4d5a12 Compare October 16, 2026 14:00

logaretm force-pushed the awad/tunnel-sveltekit branch from e4d5a12 to 56a9292 Compare October 16, 2026 14:37

logaretm force-pushed the awad/tunnel-sveltekit branch 2 times, most recently from 30af971 to 859fed8 Compare October 16, 2026 17:56

logaretm force-pushed the awad/tunnel-sveltekit branch from 859fed8 to fcac4c7 Compare October 16, 2026 20:56

logaretm added 4 commits October 16, 2026 17:01

fix(sveltekit): Keep source maps of the hooks files under a base path

6265edc

fix(sveltekit): Serve a relative tunnel path under the base path too

410a389

test(sveltekit): Check the managed tunnel under vite dev too

ee7a133

logaretm force-pushed the awad/tunnel-sveltekit branch from fcac4c7 to ee7a133 Compare October 16, 2026 21:02

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feat(sveltekit): Serve the managed tunnel from `sentryHandle` under the app's base path - #25415

feat(sveltekit): Serve the managed tunnel from `sentryHandle` under the app's base path#25415
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