meta: enable turbopack on static mode

[ovflowd]

This PR enables Turbopack on Static Export + upgrades to Next.js 15.4.2

[vercel]

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Name	Status	Preview	Updated (UTC)
nodejs-org	✅ Ready (Inspect)	Visit Preview	Jul 20, 2025 6:57pm

[Copilot]

Pull Request Overview

This PR enables Turbopack for static export builds and upgrades the Next.js framework from version 15.3.4 to 15.4.2. The change aims to improve build performance by leveraging Turbopack's faster bundling capabilities during static site generation.

• Adds --turbo flag to the static export build command
• Upgrades Next.js from 15.3.4 to 15.4.2
• Updates eslint-config-next to match the Next.js version

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.06%. Comparing base (42d64f0) to head (b0c9f6d).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8000      +/-   ##
==========================================
+ Coverage   73.04%   73.06%   +0.01%     
==========================================
  Files          95       95              
  Lines        8341     8341              
  Branches      217      217              
==========================================
+ Hits         6093     6094       +1     
+ Misses       2247     2246       -1     
  Partials        1        1              

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[github-actions]

Lighthouse Results

URL	Performance	Accessibility	Best Practices	SEO	Report
/en	🟢 99	🟢 100	🟢 100	🔴 66	🔗
/en/about	🟢 100	🟢 97	🟢 100	🔴 58	🔗
/en/about/previous-releases	🟢 99	🟢 93	🟢 100	🔴 61	🔗
/en/download	🟢 97	🟢 100	🟢 100	🔴 66	🔗
/en/blog	🟢 100	🟢 100	🟢 96	🔴 69	🔗

[ovflowd]

cc @nodejs/web-infra @nodejs/nodejs-website any idea why turbopack failing on Windows?

[avivkeller]

@styfle this looks like a bug in Next.js? It’s seems like it’s trying to combine POSIX and Windows paths?

[ovflowd]

@styfle this looks like a bug in Next.js? It’s seems like it’s trying to combine POSIX and Windows paths?

@avivkeller would you mind opening a bug on Next.js's repo? I unfortunately have very little time these days 😭

[styfle]

Looks like this was fixed on canary here vercel/next.js#81758 and being backported here vercel/next.js#81925

Should land on stable today or tomorrow.

[avivkeller]

Thank you, Steven!

[AugustinMauroy]

Thanks !

[ovflowd]

Looks like this was fixed on canary here vercel/next.js#81758 and being backported here vercel/next.js#81925

Should land on stable today or tomorrow.

Steven is our unsung Next.js hero