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docs(cloudflare): Add a React Router on Cloudflare Workers guide - #20095

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@sentry-junior sentry-junior Bot commented Oct 19, 2026 •

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DESCRIBE YOUR PR

Since SDK 11.5.0, @sentry/react-router/cloudflare exports createSentryServerInstrumentation (getsentry/sentry-javascript#25042), so React Router apps on Cloudflare Workers can use React Router's instrumentation API the same way as on Node.js. The docs had no page for React Router on plain Workers, only Hydrogen with React Router for Oxygen.

This adds a "React Router on Cloudflare" page under Cloudflare frameworks and lists it on the Cloudflare guide. It follows the new JavaScript quick start template (#19983): no feature selector, snippets include every feature with a "The snippet also turns on" list, separate Send Logs and Send Application Metrics steps, and a single test error in Verify.

Configure covers the client entry, the Sentry Cloudflare Vite plugin, Wrangler configuration, instrument.server.ts, and the server entry. The server entry uses createSentryHandleRequest with renderToReadableStream from @sentry/react-router/cloudflare (SDK 11.10.0, getsentry/sentry-javascript#25254), plus handleError and the instrumentations export. An expandable keeps the wrapSentryHandleRequest + injectTraceMetaTags path for custom handlers and SDK 11.5.0 to 11.9.x. Source maps link to the React Router guide. The setup follows the Cloudflare variant of the react-router-8-framework e2e app in sentry-javascript.

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LEGAL BOILERPLATE

Look, I get it. The entity doing business as "Sentry" was incorporated in the State of Delaware in 2015 as Functional Software, Inc. and is gonna need some rights from me in order to utilize my contributions in this here PR. So here's the deal: I retain all rights, title and interest in and to my contributions, and by keeping this boilerplate intact I confirm that Sentry can use, modify, copy, and redistribute my contributions, under Sentry's choice of terms.

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via Jan Peer Stöcklmair.

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sentry-junior Bot and others added 5 commits November 9, 2026 11:36
Co-Authored-By: Jan VamPeer Stöcklmair <jan.peer@sentry.io>
…uter guide

Use the same step layout as the main React Router guide and show only
the Sentry-specific changes to the server entry and Vite config instead
of full template files.

Co-Authored-By: Jan VamPeer Stöcklmair <jan.peer@sentry.io>
…e page

master removed the SplitLayout components, so the page failed to prerender.

Co-Authored-By: Jan Peer Stöcklmair <jan.peer@sentry.io>
…n guide copy

Add React Router to the framework list on the Cloudflare guide, turn the
server entry steps into a list that leads with why, and add a test
button to the verify step like the other Cloudflare framework guides.

Co-Authored-By: Jan VamPeer Stöcklmair <jan.peer@sentry.io>
…ter on Cloudflare page

Drop the feature selector and product option markers so the snippets
include every feature by default, add Send Logs and Send Application
Metrics steps, and trim Verify and Next Steps like the other JavaScript
quick starts.

Use createSentryHandleRequest with renderToReadableStream from
@sentry/react-router/cloudflare (SDK 11.10.0) for the server entry, and
keep the wrapSentryHandleRequest path for custom handlers and older SDKs.

Co-Authored-By: Jan Peer Stöcklmair <jan.peer@sentry.io>
sentry-junior Bot and others added 2 commits November 9, 2026 12:14
… Cloudflare page

Co-Authored-By: Jan Peer Stöcklmair <jan.peer@sentry.io>
…Router on Cloudflare page

Co-Authored-By: Jan Peer Stöcklmair <jan.peer@sentry.io>
Co-Authored-By: Jan Peer Stöcklmair <jan.peer@sentry.io>
…t Router guide

Co-Authored-By: Jan Peer Stöcklmair <jan.peer@sentry.io>

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