Adds support for generating a fallback font by providing font override
metrics for the given local font. Also adds support for providing a CSS
variable name that then can be accessed through the `.variable` export,
it contains the hashed font family name.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the
feature request has been accepted for implementation before opening a
PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have a helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The "examples guidelines" are followed from [our contributing
doc](https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md)
Co-authored-by: JJ Kasper <jj@jjsweb.site>
Makes sure font loader CSS ends up correctly in the Flight Manifest and Flight Client Entries.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have a helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The "examples guidelines" are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md)
Moves font related types to `next/font` so they can be reused in font
loaders.
Adds an argument to font loaders, the relative path from the app root to
the module consuming the loader. Needed for resolving local files
relative to the module calling it. Also used to improve error message.
Adds `@next/font/local` font loader. Similar to `@next/font/google` but
used to host locally downloaded font files.
For some context:
https://vercel.slack.com/archives/CGU8HUTUH/p1662124179102509
Adds `@next/font` package.
`scripts/update-google-fonts.js` generates functions and metadata for
all available google fonts. The metadata is used in `loader.ts` to
validate font options (from #40221). It then fetches the CSS from google
fonts, downloads the font files and emits them as static assets.
The actual integration with `packages/next` and integration tests
depends on #40221, will follow up with new PR.
Co-authored-by: JJ Kasper <jj@jjsweb.site>
