feat(node-fs): add support for multiple dirs

[Aareksio]

🔗 Linked issue

nuxt/image#1177

❓ Type of change

• 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

As discussed, add support for serving files from multiple directories. At the moment of posting this PR the code scans dirs in order and returns first found file, meaning earlier dirs take precedence.

There are no docs in this repository mentioning programatic use of dir and the change is backwards compatible.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[pi0]

Thanks for working on this ❤️

[Aareksio]

Reading the source, I think it may be better to skip throwing error when file is not found to let the IPX logic handle it with common error code: 1, 2. We currently throw slightly different error message. I find it unnecessary.

[codecov]

Codecov Report

Attention: 9 lines in your changes are missing coverage. Please review.

Comparison is base (be4b092) 53.61% compared to head (daf8729) 56.02%.

Files	Patch %	Lines
src/storage/node-fs.ts	84.21%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #203      +/-   ##
==========================================
+ Coverage   53.61%   56.02%   +2.40%     
==========================================
  Files          14       14              
  Lines        1188     1203      +15     
  Branches       66       83      +17     
==========================================
+ Hits          637      674      +37     
+ Misses        548      526      -22     
  Partials        3        3              

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[pi0]

Re error, i mainly used new codes for each driver to make debugging easier against user setups.

[pi0]

Thanks again! I have pushed few refactors to make it mergable hope you are happy with them and any PR more than welcome to improve ❤️

[Aareksio]

Thank you! I love how you used scoped fs by returning read function. Perhaps I shouldn't have overthinked the forbidden path, you are right this implies invalid configuration :)

I'll push updates to nuxt/image#1177