fix(nextjs): Avoid wrapping middleware files when in standalone mode #18172
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| Did you test this one in the repro? |
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| Yep, it builds the app correctly and we get the middleware spans. |
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logaretm force-pushed the awad/js-1079-sentry-causes-nextjs-16-build-to-fail-when-using-standalone branch from b404968 to ca164ec Compare 3 tasks
logaretm force-pushed the awad/js-1079-sentry-causes-nextjs-16-build-to-fail-when-using-standalone branch from ca164ec to bf7e473 Compare logaretm changed the title 
chargome approved these changes Nov 12, 2025
logaretm deleted the awad/js-1079-sentry-causes-nextjs-16-build-to-fail-when-using-standalone branch Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
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This PR attempts to fix #18001 by not wrapping the middleware files if Next.js 16 is the current version and is in standalone output mode which is the problematic scenario.
Investigation:
proxytomiddlewareunder the hood.proxy.jsentry is produced inmiddleware.js.nft.jsonwhich wouldn't be there otherwise, meaning if we don't wrap it then that entry doesn't get produced. So it seems like@vercel/nftis somehow adding theproxyfile as a dependency of itself which fails to copy to the output directory because it was already copied and renamed toproxy.jsor at least that is what I'm guessing is happening.