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cloudflare
[🐛 Bug]: Instrumentation is not called on Next.js v15
next-on-pages environment related information
System: Platform: darwin Arch: arm64 Version: Darwin Kernel Version 24.2.0: Fri Dec 6 19:01:59 PST 2024; root:xnu-11215.61.5~2/RELEASE_ARM64_T6000 CPU: (10) arm64 Apple M1 Max Memory: 32 GB Shell: /bin/zsh Package Manager Used: npm (10.9.0)
Relevant Packages: @cloudflare/next-on-pages: 1.13.7 vercel: 37.8.0 next: 15.1.3
Description
I am from GitBook, we use Next.js on Cloudflare using next-on-pages. Here is the instrumentation.ts file.
I made lot of tests and it seems that register in instrumentation.ts is not called when running on Cloudflare, also onRequestError is not called.
Reproduction
Add instrumentation.ts, add a log in the register and onRequestError, locally you can see the log, on Cloudflare, you don't.
Pages Deployment Method
None
Pages Deployment ID
No response
Additional Information
No response
Would you like to help?
- [ ] Would you like to help fixing this bug?
related #678
I mitigated this bug by downgrading Sentry, but even by doing so, the instrumentation file is not called at all. So it's two different problemd. #678 is only relative to Sentry, this one concerns anything in instrumentation.ts, even a simple log.
Supported Next.js versions @cloudflare/next-on-pages supports all minor and patch version of Next.js 13 and 14. We regularly run manual and automated tests to ensure compatibility.
https://developers.cloudflare.com/pages/framework-guides/nextjs/ssr/supported-features/
Would like to learn when nextjs 15 will be supported
Would like to learn when nextjs 15 will be supported
It won't be officially supported. The focus has shifted to the OpenNext adapter.
Thanks for the quick response, so NextJs 15 will be supported via opennext then?
https://opennext.js.org/cloudflare
Supported Next.js versions @opennextjs/cloudflare is pre 1.0, and still in active development. We intend to support all minor and patch versions of Next.js 15 and the latest minor of Next.js 14.
Thanks for the quick response, so NextJs 15 will be supported via opennext then?
Supported Next.js versions @opennextjs/cloudflare is pre 1.0, and still in active development. We intend to support all minor and patch versions of Next.js 15 and the latest minor of Next.js 14.
Yes
Hello 🙂 Thank you for the issue and apologies for the late reply.
Earlier this year we released our Cloudflare adapter for OpenNext, and we have been continuously investing effort in its improvement since then. Existing deployments can continue to use the next-on-pages tooling, but the Cloudflare adapter for OpenNext is currently stable and recommended for deployment of Next.js applications to Cloudflare.
As such, we will no longer be maintaining next-on-pages. We recently deprecated the package on npm and we plan to archive this repo on Monday Sep 29, 2025. In preparation for archival, we are closing all open issues and PRs.
If you have concerns, please feel free to reply here before the repo is archived (after that, it will no longer be possible to comment) or to reach out to our team on Discord.
Thanks so much for using and contributing to next-on-pages 🧡
