feat(cloudflare): Wrap vinext Worker entries with @sentry/nextjs/cloudflare

[JPeer264]

part of #19514
part of JS-1803

When a Vite build uses vinext and @sentry/nextjs/cloudflare resolves from the Worker entry, the Vite plugin of @sentry/cloudflare now wraps the entry with withSentry from @sentry/nextjs/cloudflare. Other builds, and versions of @sentry/nextjs without that entry, keep @sentry/cloudflare.

-import * as __SENTRY__ from '@sentry/cloudflare';
+import * as __SENTRY__ from '@sentry/nextjs/cloudflare';
 const __SENTRY_DEFAULT_EXPORT__ = { fetch() { ... } };
 export default __SENTRY__.withSentry(() => undefined, __SENTRY_DEFAULT_EXPORT__);

Why

With withSentry of @sentry/cloudflare, a vinext app on Workers sends Cloudflare data but no Next.js spans. Now it gets the Next.js spans without a config change.

Traces

The same app and requests: vinext on Workers before and after this PR, and next start on Node.js.

Request	vinext before	vinext after	Next.js on Node.js
GET /parameterized/42	GET, 1 span	GET /parameterized/[id], 7 spans	GET /parameterized/[id], 7 spans
GET /api/hello	GET, 1 span	GET /api/hello, 4 spans	GET /api/hello, 4 spans
GET /api/throw (error)	GET, 1 span	GET /api/throw, 3 spans	GET /api/throw, 3 spans

[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	29.72 kB	-	-
@sentry/browser - with treeshaking flags	27.86 kB	-	-
@sentry/browser - with treeshaking flags tracing without tracing	27.75 kB	-	-
@sentry/browser (incl. Tracing)	51.75 kB	-	-
@sentry/browser (incl. Tracing + Span Streaming)	51.75 kB	-	-
@sentry/browser (incl. Tracing, Profiling)	54.73 kB	-	-
@sentry/browser (incl. Tracing, Replay)	91.44 kB	-	-
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	80.34 kB	-	-
@sentry/browser (incl. Tracing, Replay with Canvas)	96.14 kB	-	-
@sentry/browser (incl. Tracing, Replay, Feedback)	109.15 kB	-	-
@sentry/browser (incl. Feedback)	47.24 kB	-	-
@sentry/browser (incl. sendFeedback)	34.77 kB	-	-
@sentry/browser (incl. FeedbackAsync)	39.85 kB	-	-
@sentry/browser (incl. Metrics)	30.72 kB	-	-
@sentry/browser (incl. Logs)	31.01 kB	-	-
@sentry/browser (incl. Metrics & Logs)	31.67 kB	-	-
@sentry/react	31.54 kB	-	-
@sentry/react (incl. Tracing)	54.07 kB	-	-
@sentry/vue	37.75 kB	-	-
@sentry/vue (incl. Tracing)	54.67 kB	-	-
@sentry/svelte	29.74 kB	-	-
@sentry/remix (Remix 3 client bundle)	56.76 kB	-	-
CDN Bundle	31.43 kB	-	-
CDN Bundle (incl. Tracing)	52.28 kB	-	-
CDN Bundle (incl. Logs, Metrics)	33.64 kB	-	-
CDN Bundle (incl. Tracing, Logs, Metrics)	54.23 kB	-	-
CDN Bundle (incl. Replay, Logs, Metrics)	74.53 kB	-	-
CDN Bundle (incl. Tracing, Replay)	89.91 kB	-	-
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)	91.86 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback)	96.06 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)	98.05 kB	-	-
CDN Bundle - uncompressed	92.72 kB	-	-
CDN Bundle (incl. Tracing) - uncompressed	155.25 kB	-	-
CDN Bundle (incl. Logs, Metrics) - uncompressed	99.25 kB	-	-
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed	161.21 kB	-	-
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed	229.22 kB	-	-
CDN Bundle (incl. Tracing, Replay) - uncompressed	275.35 kB	-	-
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed	281.29 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	289.05 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed	294.98 kB	-	-
@sentry/nextjs (client)	56.45 kB	-	-
@sentry/sveltekit (client)	52.14 kB	-	-
@sentry/core/server	40.85 kB	-	-
@sentry/core/browser	13.71 kB	-	-
@sentry/node	145.87 kB	+0.01%	+8 B 🔺
@sentry/node/import (ESM hook with diagnostics-channel injection)	83.33 kB	-	-
@sentry/node - without tracing	93.66 kB	+0.02%	+10 B 🔺
@sentry/node - without channel injection	124.01 kB	+0.02%	+13 B 🔺
@sentry/aws-serverless	101.88 kB	-0.01%	-5 B 🔽
@sentry/cloudflare (withSentry) - minified	209.67 kB	-	-
@sentry/cloudflare (withSentry)	519.89 kB	-	-
@sentry/nextjs/cloudflare (withSentry) - minified	227.34 kB	added	added

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[JPeer264]

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