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Oleg Isonen dbfb0a9849 fix: Preserve variable font styles (#6153 )

## Summary

Preserve font style metadata for variable fonts so upright and italic
files from the same family produce distinct `@font-face` rules. Variable
fonts with an `ital` or `slnt` axis are also registered for the matching
CSS styles.

## Technical choices

- Detect `normal`, `italic`, and `oblique` from the font binary,
preferring OS/2 `fsSelection`, then `post.italicAngle`, then the
existing subfamily parser.
- Add `style` to variable-font metadata while defaulting legacy stored
records to `normal`.
- Keep update metadata partial and strict, but accept and persist
`style` and `variationAxes` together so a `get-asset` result can be
written back.
- Group generated font faces by family, style, and browser-selectable
variable descriptors so separate upright and italic files cannot
overwrite each other.
- Regenerate the runtime operation contracts from the updated schema.

## Checklist

- [x] Add regressions using real upright and italic Inter variable-font
binaries.
- [x] Cover style detection, metadata compatibility, updates, and
generated font-face selection.
- [x] Verify the final stylesheet contains distinct upright and italic
`@font-face` rules.
- [x] Verify the public asset update contract accepts a complete
variable-font metadata object.
- [x] Review documentation impact and update the custom-font guide.
- [x] Regenerate and verify runtime API contracts.

## Verification

- `@webstudio-is/fonts`: 14 tests and typecheck passed.
- `@webstudio-is/asset-uploader`: 198 tests and typecheck passed.
- `@webstudio-is/sdk`: 514 tests and typecheck passed.
- `@webstudio-is/project-build`: 2,094 tests and typecheck passed.
- CLI: 980 tests and typecheck passed.
- Builder typecheck passed.
- `pnpm lint`, `pnpm check:package-boundaries`, `pnpm
check:generated-api`, and `pnpm check:generated-docs` passed.
- Regression tests were demonstrated failing against the previous
behavior and passing with the fix.
- Fixture builds regenerated successfully with no diff. Full remote
fixture sync was attempted, but the deployed API rejected the source CLI
contract as incompatible.
- Agent evaluations were not run because they require separate explicit
approval.

Closes #6150

2026-08-15 22:52:00 +02:00

src

fix: Preserve variable font styles (#6153 )

2026-08-15 22:52:00 +02:00

LICENSE

Change license from MIT to AGPL V3 (#1980 )

2023-07-26 01:06:21 +02:00

package.json

chore: migrate toolchain to oxc (oxfmt, oxlint, rolldown-vite) and typeScript 7 (#5868 )

2026-07-12 01:03:36 +02:00

README.md

fonts package with fonts config