fix: find the correct output for the standalone output#1076
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radding wants to merge 1 commit intoopennextjs:mainfrom
Open
fix: find the correct output for the standalone output#1076radding wants to merge 1 commit intoopennextjs:mainfrom
radding wants to merge 1 commit intoopennextjs:mainfrom
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There is a missmatch between next's output, and open-next's assumption.
Open Next assumes that standalone is based on the root of a monorepo,
while Next uses outputFileTracingRoot to determine the root and path
of .next/standalone. For example, take a monorepo like this:
apps/
marketing/
landing-pages/
// next app
If you set outputFileTracingRoot in landing pages to ../, then the
standalone output would be .next/standalone/landing-pages, but
open-next will assume that the output is .next/standalone/apps/marketing/landing-pages.
This PR fixes that by actually looking at the standalone output and
determining its structure by looking for .next/standalone/dir/.next
and returning .next/standalone/dir.
I tried using the outputFileTracingRoot directly, but this proved to
be more unstable because it was still tied to the relative path of
the mono-repo, so in some cases it would generate wrong paths.
I also tried to set the outputFileTracingRoot in my next config to line
up with what open-next assumed, and while the build was working, it
bloated the assets to deploy (this mono-repo has grown a lot), which
made it impossible to deploy.
conico974
reviewed
Jan 11, 2026
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conico974
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conico974
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This one will need a bunch of testing.
I don't know which version of Next you tested against, but as a patch or a minor it has to work for Next 12 to 16. We'll drop support for 12 and 13 in the next major
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There is a mismatch between next's output, and open-next's assumption.
Open Next assumes that standalone is based on the root of a monorepo, while Next uses
outputFileTracingRootto determine the root and path of .next/standalone. For example, take a monorepo like this:If you set
outputFileTracingRootin landing pages to ../, then the standalone output would be.next/standalone/landing-pages, but open-next will assume that the output is.next/standalone/apps/marketing/landing-pages.This PR fixes that by actually looking at the standalone output and determining its structure by looking for
.next/standalone/dir/.nextand returning.next/standalone/dir.I tried using the
outputFileTracingRootdirectly, but this proved to be more unstable because it was still tied to the relative path of the mono-repo, so in some cases it would generate wrong paths.I also tried to set the
outputFileTracingRootin my next config to line up with what open-next assumed, and while the build was working, it bloated the assets to deploy (this mono-repo has grown a lot), which made it impossible to deploy.