feat: add upm package manager support

[iiio2]

package-manager-detector new update has upm.

[pkg-pr-new]

• nuxt-cli-playground

  npm i https://pkg.pr.new/create-nuxt@1597
  

  npm i https://pkg.pr.new/nuxi@1597
  

  npm i https://pkg.pr.new/@nuxt/cli@1597
  

commit: dbd3c8f

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	package-manager-detector@​1.9.0

View full report

[github-actions]

CLI benchmark

@nuxt/cli v4.0.0-alpha.1 (baseline) vs v4.0.0-alpha.1 (this PR)

Metric	baseline v4.0.0-alpha.1	head v4.0.0-alpha.1	Delta
nuxt --version wall time (median)	67 ms	66 ms	-0.3%
nuxt --help wall time (median)	142 ms	142 ms	-0.2%
nuxt dev --help wall time (median)	107 ms	105 ms	-1.4%
nuxt --version modules loaded	35	35	0.0%
nuxt --version built-ins loaded	27	27	0.0%
nuxt --help modules loaded	135	135	0.0%
nuxt --help built-ins loaded	87	87	0.0%
nuxt dev --help modules loaded	64	64	0.0%
nuxt dev --help built-ins loaded	87	87	0.0%
Installed node_modules	2.46 MB	2.46 MB	-0.0%
Published tarball (packed)	240.1 kB	240.1 kB	+0.0%

Full report

@nuxt/cli v4.0.0-alpha.1 (baseline) vs v4.0.0-alpha.1 (head)

Setting	Value
Baseline	ref:df61b3990a91ef0309180423b58ea0c102319081 (v4.0.0-alpha.1)
Head	local packages/nuxt-cli at 4a767f0 (v4.0.0-alpha.1)
Node	v24.21.0
OS	Linux 6.17.0 (kernel 6.17.0-1022-azure)
CPU	AMD EPYC 7763 64-Core Processor x 4
Memory	15.6 GB
Load average at start	2.13, 0.72, 0.26
Run started	2026-10-05T16:29:50.691Z

Cold CLI startup

Median of 15 interleaved runs per command, one warmup discarded.

Command	baseline v4.0.0-alpha.1 median	head v4.0.0-alpha.1 median	Delta	baseline v4.0.0-alpha.1 min / p95	head v4.0.0-alpha.1 min / p95
nuxt --version	67 ms	66 ms	-0.3%	63 ms / 70 ms	64 ms / 71 ms
nuxt --version (first output byte)	62 ms	62 ms	-0.4%	59 ms / 66 ms	59 ms / 67 ms
nuxt --help	142 ms	142 ms	-0.2%	138 ms / 147 ms	137 ms / 150 ms
nuxt --help (first output byte)	137 ms	137 ms	-0.0%	133 ms / 141 ms	132 ms / 145 ms
nuxt dev --help	107 ms	105 ms	-1.4%	103 ms / 113 ms	101 ms / 110 ms
nuxt dev --help (first output byte)	101 ms	100 ms	-1.1%	98 ms / 108 ms	96 ms / 105 ms
nuxt <unknown-command> (no-op)	151 ms	150 ms	-1.0%	146 ms / 159 ms	147 ms / 154 ms
nuxt <unknown-command> (no-op) (first output byte)	145 ms	144 ms	-0.8%	141 ms / 153 ms	141 ms / 148 ms

Module load cost

Counted with a module.registerHooks load hook, compile cache disabled. Counts every JS module actually evaluated on that code path (native addons excluded). Built-ins loaded after bootstrap are counted separately, including the internal modules they load.

Command	baseline v4.0.0-alpha.1 modules	head v4.0.0-alpha.1 modules	Delta	baseline v4.0.0-alpha.1 source bytes	head v4.0.0-alpha.1 source bytes	Delta	baseline v4.0.0-alpha.1 built-ins	head v4.0.0-alpha.1 built-ins	Delta
nuxt --version	35	35	0.0%	297.8 kB	297.8 kB	0.0%	27	27	0.0%
nuxt --help	135	135	0.0%	847.4 kB	847.4 kB	0.0%	87	87	0.0%
nuxt dev --help	64	64	0.0%	455.3 kB	455.3 kB	0.0%	87	87	0.0%

Install footprint and published tarball

Each version installed on its own into an empty project with nothing but @nuxt/cli as a dependency, so the tree is exactly the CLI and its transitive dependencies. npm cache is warm and the registry is only consulted for metadata, so install wall time is indicative, not a network benchmark.

Metric	baseline v4.0.0-alpha.1	head v4.0.0-alpha.1	Delta
Direct dependencies of @nuxt/cli	23	23	0.0%
Packages in the installed tree (unique name@version)	39	39	0.0%
Unique package names	39	39	0.0%
Package directories on disk (cross-check)	32	32	0.0%
Installed node_modules on disk	2.46 MB	2.46 MB	-0.0%
Installed files	435	435	0.0%
Install wall time (warm npm cache, median of 3)	1.29 s	1.29 s	+0.3%
Published tarball (packed)	240.1 kB	240.1 kB	+0.0%
Published tarball (unpacked)	780.2 kB	780.2 kB	0.0%
Files in tarball	100	100	0.0%

Interleaved runs on a shared runner: trust the deltas, not the absolute timings. The dev, restart and build suites run locally via pnpm bench:cli.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (main@df61b39). Learn more about missing BASE report.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1597   +/-   ##
=======================================
  Coverage        ?   83.99%           
=======================================
  Files           ?      177           
  Lines           ?    11478           
  Branches        ?     3299           
=======================================
  Hits            ?     9641           
  Misses          ?     1546           
  Partials        ?      291           

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[codspeed]

Merging this PR will not alter performance

✅ 2 untouched benchmarks

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_{Comparing iiio2:feat/ump-add-feature (dbd3c8f) with main (df61b39)}

[coderabbitai]

Navigate logical layers of code changes, visualize relationships, and explore their blast radius.

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Organization UI
• Review profile: CHILL
• Plan: Advanced
• Run ID: 04080b50-51ab-4006-909a-0f28c941ce3b

📥 Commits

Reviewing files that changed from the base of the PR and between df61b39 and dbd3c8f.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (8)

• docs/add.md
• docs/init.md
• docs/module.md
• packages/create-nuxt/package.json
• packages/nuxt-cli/package.json
• packages/nuxt-cli/test/unit/help.spec.ts
• packages/nuxt-cli/test/unit/utils/package-managers.spec.ts
• pnpm-workspace.yaml

Included review availability: This review used your included allowance. Your plan provides up to 2 included reviews per hour; 1 remain after this review.

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📝 Walkthrough

Walkthrough

The package-manager detector dependency ranges are updated to version 1.9.0. Tests cover detection of an upm.lock file and the lock-file list for upm. CLI help snapshots and documentation list upm as a supported --packageManager value.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to dbd3c

This adds UPM as a recognized package manager by upgrading the detector library and updating documentation and help output. The new detector version is published and locked, and tests cover UPM detection. No merge-blocking risk was identified.

Architecture Summary

Architecture risk: 🔵 Low · up to dbd3c

The change affects 4 systems.

Changed systems: docs, packages/nuxt-cli, packages/create-nuxt, pnpm-workspace.yaml

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — docs (service) was modified; 3 changed files map to changed impact.
• observed — packages/nuxt-cli (library) was modified; 3 changed files map to changed impact.
• observed — packages/create-nuxt (library) was modified; 1 changed file maps to changed impact.
• observed — pnpm-workspace.yaml (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in docs/add.md: The usage syntax adds upm to the accepted --packageManager values.
• observed — Modified behavior in docs/add.md: The options table adds upm to the package managers listed for --packageManager.
• observed — Modified behavior in docs/init.md: The command synopsis adds upm to the listed --packageManager choices.
• observed — Modified behavior in docs/init.md: The options table adds upm to the --packageManager choices; the other displayed option entries are unchanged.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly identifies the main change: adding support for the upm package manager.
Description check	✅ Passed	The description relates to the changeset by noting that an update to package-manager-detector adds upm support.

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