[sentry-junior]

Junior apps no longer install @sentry/nitro themselves. @sentry/junior now depends on it, and @sentry/junior/nitro exports withSentryConfig.

The Sentry SDK keeps one client for each SDK version (globalThis.__SENTRY__[SDK_VERSION]). initSentry() creates that client with Junior's @sentry/node. If an app pins an @sentry/nitro version that differs from Junior's @sentry/node, the Nitro runtime hooks find no client. The error hook and request spans then do nothing, and nothing reports it. Before this change, each app had to keep its @sentry/nitro pin equal to the @sentry/node version inside @sentry/junior by hand.

Now @sentry/nitro and @sentry/node are next to each other in the pnpm catalog, so they get bumped together. Apps write:

import { juniorNitro, withSentryConfig } from "@sentry/junior/nitro";

withSentryConfig is a thin wrapper around the SDK function. It sets one default: the build release name is getDeploymentServiceVersion(), which is <junior version>+<VERCEL_GIT_COMMIT_SHA>. This is the same release that initSentry() reports. Without this default, @sentry/nitro names the build release after the bare commit SHA, so source maps and runtime events would be under two different releases. An explicit release.name still wins. The wrapper types come from @sentry/nitro's own signature, so dist/nitro.d.ts does not inline Nitro's types.

The apps/example app, the junior init scaffold, and the existing-app docs use the new import. The package README no longer tells apps to install @sentry/node. That instruction is how getsentry/junior-prod got an unused second copy (@sentry/node@10.49.0 next to Junior's 10.65.0).

Why now: junior-prod never adopted withSentryConfig, so production source maps are never uploaded. Production stack frames point at _libs/@sentry/junior+[...].mjs around line 226k with js_no_source. getsentry/junior-prod#568 is the draft follow-up that uses this export.

Trade-off: every Junior app now installs @sentry/nitro, @sentry/bundler-plugin-core, and @sentry/cli. @sentry/junior already hard-depends on @sentry/node, so this seemed acceptable. Without a Sentry auth token, the build logs a warning and skips the upload.

Not done here: wrapping the Sentry setup inside juniorNitro() itself. @sentry/nitro does not export the module factory for that, and it must change the config before modules run. Doing it here would mean copying SDK internals.

Verification

• pnpm --filter @sentry/junior build: dist/nitro.js imports @sentry/nitro as an external dependency, and dist/nitro.d.ts stays small (47 lines).
• pnpm typecheck and pnpm lint in packages/junior, and pnpm typecheck in apps/example.
• vitest run on init-cli, check-cli, and nitro-plugin-module passed.
• A temporary test with a mocked @sentry/nitro checked the release default. It passed 0.264.0+deadbeef when VERCEL_GIT_COMMIT_SHA was set, kept an explicit name, and left the name undefined when no SHA was set.
• nitro build in apps/example: one @sentry/core (10.65.0) is in the output, and scripts/check-vercel-output.mjs passes.
• pnpm build:ci in junior-prod linked to this branch: the build passes with one @sentry/core (10.65.0). The upload step ran sentry-cli releases new 0.264.0+deadbeef. The sandbox token was not authorized, so the step got a 401 and created no release.
• pnpm release:check passes.
• The behavioral evals failure also occurs on unrelated PRs (feat(sentry): Upgrade Sentry SDKs to v11 #2339, fix(dev): Keep evals on Blob storage and start S3 in acp-local #2328, feat(images): Generate images with GPT Image through the AI SDK #2317, fix: Update Node adapter and respect conditional watch replies #2313). The integration evals pass.
• I did not test a real source map upload.

via Francesco Gringl-Novy.

--

View Junior Session [Sentry]

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Project	Deployment	Actions	Updated
junior-docs	Ready	Preview	Oct 29, 2026 2:36pm UTC

[sentry-evals]

Sentry Evals

junior-behavioral

Run	Status	Passed	Failed	Errored	Cost	Tokens	Duration
Head	Error	75	2	1	$1.19	0	524.57s

Base commit 9818055 has no eval run to compare against.

junior-integration

Run	Status	Passed	Failed	Errored	Cost	Tokens	Duration
Head	Passed	102	0	0	$0.57	0	297.67s

Base commit 9818055 has no eval run to compare against.

[dcramer]

this needs rebased junior