fix(config): exclude aliased mock packages from optimizeDeps in browser mode

[yamachi4416]

🔗 Linked issue

📚 Description

When packages using dependencies aliased to mocks are added to optimizeDeps.include (following nuxt dev optimize hint), it triggers runtime re-bundling and causes errors in vitest5 browser mode. (this occurs when vite cache is not present, such as in ci).

Reproduction

before: https://stackblitz.com/edit/nuxt-test-utils-pr-1816-before?file=package.json
after: https://stackblitz.com/edit/nuxt-test-utils-pr-1816-after?file=package.json

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@nuxt/test-utils@1816

npm i https://pkg.pr.new/vitest-environment-nuxt@1816

commit: 4d86f1f

[coderabbitai]

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: d6d009a7-0a97-46f6-8379-5de6f07f8020

📥 Commits

Reviewing files that changed from the base of the PR and between 517f137 and 4d86f1f.

📒 Files selected for processing (1)

• src/config.ts

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📝 Walkthrough

Walkthrough

When Vitest 5+ browser mode is enabled, resolveConfig initializes optimizeDeps.exclude and adds @vue/devtools-kit and @vue/devtools-core. This extends the existing dependency exclusions for mock-aliased packages.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 4d86f

Vitest 5+ browser mode now avoids pre-bundling the mock-aliased Vue DevTools packages, preventing browser-test dependency resolution failures without changing public APIs or non-browser behavior.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: excluding aliased mock packages from Vite optimizeDeps in browser mode.
Description check	✅ Passed	The description directly explains the Vitest 5 browser-mode issue, its CI-related trigger, and the purpose of the configuration change. It also provides reproductions.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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