feat(fonts): refactor

[florian-lefebvre]

The PR is very big! I suggest you checkout the branch locally and go through the code because the diff is hard to analyze at the first glance.

Changes

• Refactors how the experimental fonts API work
• As I developed the feature, I kept adding stuff on top of stuff etc and it got quite messy, because I discovered things along the way
• With all what has been done in mind, I've redone a huge part of it so responsabilities are split correctly
• Now, most things accept "dependencies" (ie. each set a contract) so they can be more easily tested
• This refactor is also done to prepare for when some of the logic will be extracted to @astrojs/vite-plugin-fonts
• Along the way, I fixed some bugs and made improvements:
  • There were issues with quoting when family names contained spaces, this is fixed
  • The local providere was preloading too many font files, this is fixed
  • The CSS generated during the build is not minifed for performance

Testing

As a result, there are more/better tests which is always good!

Docs

No behavior change so no docs change! Changesets tho

[ematipico]

Honestly, it's very hard to find the bug fixes in this huge refactor. As long as tests pass, it's fine. However, I don't have the energy to look at all the code. Take this review with a grain of salt and don't count on it, please.

[ematipico]

The folders implementations/ and logic/ have an unusual name. We usually name the folders by feature, but in this case, it's hard to understand which "feature" belongs to. Maybe consider a main folder called fonts/ and then have everything there