feat(cloudflare-module, cloudflare-pages): experimental dynamic imports

[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)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

This adds support for dynamic imports with CF modules following cloudflare/workers-sdk#2769. (Feature coming soon to CF Pages too: merged via #1531 by @dario-piotrowicz to this PR)

Experiment can be enabled by setting NITRO_EXP_CLOUDFLARE_DYNAMIC_IMPORTS environment variable.

Pending: cloudflare/workers-sdk#3707

TODO:

• __STATIC_CONTENT_MANIFEST import support
• update docs with rules info (and console warning)

📝 Checklist

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

[pi0]

Thanks for PR. I think previously there were issues with module format and dynamic chunks (globalThis injection).

I will double check this you can also try on a nuxt project :)

[codecov]

Codecov Report

Merging #1172 (d44436f) into main (6a1ea5c) will decrease coverage by 0.10%.
The diff coverage is 36.84%.

❗ Current head d44436f differs from pull request most recent head 0d98d24. Consider uploading reports for the commit 0d98d24 to get more accurate results

@@            Coverage Diff             @@
##             main    #1172      +/-   ##
==========================================
- Coverage   77.80%   77.70%   -0.10%     
==========================================
  Files          76       76              
  Lines        7816     7835      +19     
  Branches      797      801       +4     
==========================================
+ Hits         6081     6088       +7     
- Misses       1732     1744      +12     
  Partials        3        3              

Files Changed	Coverage Δ
src/presets/cloudflare-pages.ts	58.87% <30.00%> (-1.42%)	⬇️
src/presets/cloudflare-module.ts	88.09% <44.44%> (-11.91%)	⬇️

[nuxt-studio]

✅ Live Preview ready!

Name	Edit	Preview	Latest Commit
nitro	Edit on Studio ↗︎	View Live Preview	0d98d24

[Rigo-m]

Faster than light

[pi0]

Thanks for this initiative @danielroe, @dario-piotrowicz 💚 I have made some small refactors to allow enabling this experiment via NITRO_EXP_CLOUDFLARE_DYNAMIC_IMPORTS and make testing easier.