10.37.0 — Sentry JavaScript

Important Changes

feat(core): Introduces a new Sentry.setConversationId() API to track multi turn AI conversations across API calls. (#18909)

You can now set a conversation ID that will be automatically applied to spans within that scope. This allows you to link traces from the same conversation together.
```
import * as Sentry from '@sentry/node';

// Set conversation ID for all subsequent spans
Sentry.setConversationId('conv_abc123');

// All AI spans will now include the gen_ai.conversation.id attribute
await openai.chat.completions.create({...});
```
This is particularly useful for tracking multiple AI API calls that are part of the same conversation, allowing you to analyze entire conversation flows in Sentry. The conversation ID is stored on the isolation scope and automatically applied to spans via the new conversationIdIntegration.
feat(tanstackstart-react): Auto-instrument global middleware in sentryTanstackStart Vite plugin (#18844)

The sentryTanstackStart Vite plugin now automatically instruments requestMiddleware and functionMiddleware arrays in createStart(). This captures performance data without requiring manual wrapping.

Auto-instrumentation is enabled by default. To disable it:
```
// vite.config.ts
sentryTanstackStart({
  authToken: process.env.SENTRY_AUTH_TOKEN,
  org: 'your-org',
  project: 'your-project',
  autoInstrumentMiddleware: false,
});
```

Other Changes

feat(core): simplify truncation logic to only keep the newest message (#18906)
feat(core): Support new client discard reason invalid (#18901)
feat(deps): Bump OpenTelemetry instrumentations (#18934)
feat(nextjs): Update default ignore list for sourcemaps (#18938)
feat(node): pass prisma instrumentation options through (#18900)
feat(nuxt): Don't run source maps related code on Nuxt "prepare" (#18936)
feat(replay): Update client report discard reason for invalid sessions (#18796)
feat(winston): Add customLevelMap for winston transport (#18922)
feat(react-router): Add support for React Router instrumentation API (#18580)
fix(astro): Do not show warnings for valid options (#18947)
fix(core): Report well known values in gen_ai.operation.name attribute (#18925)
fix(node-core): ignore vercel AbortError by default on unhandled rejection (#18973)
fix(nuxt): include sentry.config.server.ts in nuxt app types (#18971)
fix(profiling): Add platform to envelope item header (#18954)
fix(react): Defer React Router span finalization until lazy routes load (#18881)
ref(core): rename gen_ai.input.messages.original_length to sentry.sdk_meta.gen_ai.input.messages.original_length (#18970)
ref(core): rename gen_ai.request.messages to gen_ai.input.messages (#18944)
ref(core): Set system message as separate attribute (#18978)
deps: Bump version of sentry-bundler-plugins (#18972)

<details> <summary><strong>Internal Changes</strong></summary>

chore(e2e): Add e2e claude skill (#18957)
chore(e2e): Add Makefile to make running specific e2e test apps easier (#18953)
chore(e2e): Modify e2e skill to also account for untracked files (#18959)
ref(tests): use constants in ai integration tests and add missing ones (#18945)
test(nextjs): Added nextjs CF workers test app (#18928)
test(prisma): Move to yarn prisma (#18975)

</details>

Work in this release was contributed by @sebws, @harshit078, and @fedetorre. Thank you for your contributions!

Bundle size 📦

Path	Size
@sentry/browser	24.73 KB
@sentry/browser - with treeshaking flags	23.27 KB
@sentry/browser (incl. Tracing)	41.15 KB
@sentry/browser (incl. Tracing, Profiling)	45.68 KB
@sentry/browser (incl. Tracing, Replay)	78.86 KB
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	68.75 KB
@sentry/browser (incl. Tracing, Replay with Canvas)	83.46 KB
@sentry/browser (incl. Tracing, Replay, Feedback)	95.36 KB
@sentry/browser (incl. Feedback)	41.06 KB
@sentry/browser (incl. sendFeedback)	29.31 KB
@sentry/browser (incl. FeedbackAsync)	34.19 KB
@sentry/browser (incl. Metrics)	25.81 KB
@sentry/browser (incl. Logs)	25.95 KB
@sentry/browser (incl. Metrics & Logs)	26.6 KB
@sentry/react	26.42 KB
@sentry/react (incl. Tracing)	43.33 KB
@sentry/vue	29.07 KB
@sentry/vue (incl. Tracing)	42.9 KB
@sentry/svelte	24.74 KB
CDN Bundle	27.24 KB
CDN Bundle (incl. Tracing)	41.93 KB
CDN Bundle (incl. Tracing, Logs, Metrics)	42.73 KB
CDN Bundle (incl. Tracing, Replay)	77.82 KB
CDN Bundle (incl. Tracing, Replay, Feedback)	83.12 KB
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)	84.01 KB
CDN Bundle - uncompressed	79.69 KB
CDN Bundle (incl. Tracing) - uncompressed	124.16 KB
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed	126.93 KB
CDN Bundle (incl. Tracing, Replay) - uncompressed	238.03 KB
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	250.53 KB
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed	253.28 KB
@sentry/nextjs (client)	45.63 KB
@sentry/sveltekit (client)	41.51 KB
@sentry/node-core	50.8 KB
@sentry/node	162.16 KB
@sentry/node - without tracing	91.59 KB
@sentry/aws-serverless	106.74 KB