feat: support regexps in external options

[danielroe]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 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)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

I'm hoping to move more inlining from vite server build -> nitro build to avoid duplication of libraries. (e.g. h3 createError, some vue dependencies, anything shared between vite + nitro builds, etc.)

Part of that means being able to respect Nuxt's build.transpile which may include RegExps, and the best way would be to be able to pass those options on to nitro externals options.

📝 Checklist

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

[codecov]

Codecov Report

Merging #1388 (bbc9629) into main (1d0c120) will increase coverage by 0.08%.
The diff coverage is 72.46%.

@@            Coverage Diff             @@
##             main    #1388      +/-   ##
==========================================
+ Coverage   76.64%   76.73%   +0.08%     
==========================================
  Files          71       71              
  Lines        7241     7273      +32     
  Branches      723      727       +4     
==========================================
+ Hits         5550     5581      +31     
- Misses       1690     1691       +1     
  Partials        1        1              

Impacted Files	Coverage Δ
src/rollup/plugins/externals-legacy.ts	9.35% <47.82%> (+2.55%)	⬆️
src/rollup/plugins/externals.ts	94.41% <83.72%> (-0.89%)	⬇️
src/build.ts	85.55% <100.00%> (+0.03%)	⬆️
src/presets/cloudflare-module.ts	100.00% <100.00%> (ø)
src/presets/cloudflare.ts	100.00% <100.00%> (ø)

[pi0]

This looks a nice addition. Shall we support functions in same iteration as well? might help to do some early refactors while was looking at code like making shared inline util for filter and normalize.

[pi0]

💯