Turbopack uses a different format for its css module classnames [0].
This adds and uses a helper function to the next-font tests to assert
against these classnames when testing with Turbopack. Ideally these
tests could be more behavioral (e.g. asserting on rendered dimensions),
but these can't capture things like fallback fonts.
[0] https://github.com/vercel/turbo/pull/3437
Enables using `next/font` by adding `@next/font` as a dependency and
reexporting its loaders.
Always generates the `font-loader-manifest` as we can't know beforehand
if the user intends to use `next/font` or not.
Also adds telemetry for `next/font` usage.
The tests are updated to use `next/font`. But `@next/font` is tested in
`test/e2e/next-font/index.test.ts` and `test/e2e/app-dir/next-font` as
well to ensure it doesn't break.
Fixes NEXT-351
## Bug
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- [ ] Integration tests added
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## Feature
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PR.
- [ ] Related issues linked using `fixes #number`
- [ ]
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tests added
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Adds `data-next-font` data attribute to the preload tag if added by
`@next/font`.
```js
// Using `size-adjust` fallback font.
<link data-next-font="size-adjust" rel="preload" href="..." as="font" type="font/woff2" crossorigin="anonymous">
// Not using `size-adjust` fallback font.
<link data-next-font="" rel="preload" href="..." as="font" type="font/woff2" crossorigin="anonymous">
```
If no fonts are preloaded, the tag is added on the preconnect tag.
Fixes NEXT-350
## Bug
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## Feature
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feature request has been accepted for implementation before opening a
PR.
- [ ] Related issues linked using `fixes #number`
- [ ]
[e2e](https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs)
tests added
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## Documentation / Examples
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A few variable fonts don't have a weight range, in those cases a `wght`
axis shouldn't be set at all. Just add optional additional axes.
Some fonts set a CSS variable on a `body` tag, ignore it to keep the CSS
module pure.
Fixes#43040
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If a Google font is available as a variable font - the different variants may reuse the same file when you ask for specific variants. Make sure to reuse the same file and don't make additional requests.
## Bug
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## Documentation / Examples
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Make a single request when using several weights and/or styles for
google fonts instead of one for each variation.
## Bug
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## Feature
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PR.
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## Documentation / Examples
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Use the name of the assigned const as the family name instead of trying
to get it from the font file. That way we know we won't get any invalid
characters in the font-family name.
fixes#42264
## Bug
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PR.
- [ ] Related issues linked using `fixes #number`
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## Documentation / Examples
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
Allows you to specify multiple weights and styles for a
`@next/font/local` font family.
When generating a fallback font family it will pick the font file with
the weight closest to normal, this will typically make up most of the
text on a page.
## Bug
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## Documentation / Examples
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Enable using multiple weights and styles in the same google font loader
call.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`
## Feature
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PR.
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## Documentation / Examples
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Update the avg calculations.
## Bug
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## Feature
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## Documentation / Examples
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
Enable setting font specific subsets in the call.
## Bug
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## Feature
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## Documentation / Examples
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Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>
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Updating size-adjust calc to use azAvgWidth instead of xAvgCharWidth
Co-authored-by: Hannes Bornö <hannes.borno@vercel.com>
Co-authored-by: Balázs Orbán <info@balazsorban.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
Make local and google font loaders more similar. Both should define `weight: string` and `style: string`.
## Bug
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When using `@next/font/local` we can't have pre calculated metrics for the font. This PR uses fontkit to read metadata about the imported local font in order to generate a fallback.
Also removes some props from the api that's better done automatically in the future.
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Fixes local weight type which could break if you wrote "regular" instead of 400. Adds `variable` property to google font loader to let you define the name of the CSS variable.
## Bug
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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
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
Makes sure font loader CSS ends up correctly in the Flight Manifest and Flight Client Entries.
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Updates the output path so it's the same as when font files are imported
in CSS: `url(./font.woff2)`
Also adds missing font types to next package.
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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](https://vercel.slack.com/archives/CGU8HUTUH/p1662124179102509)
Continuation of #40221 and #40227
Adds `experimental.fontLoaders`.
SWC next-font-loaders (#40221) transforms font loader (e.g. #40227) call
expressions into an import with the function call arguments as a query.
The imports will be matched by `next-font-loader`. It runs the
configured font loaders - emits font files and returns CSS. Exports are
added, and the font-family is made locally scoped. The returned CSS is
turned into a CSS module with `css-loader` which lets you consume the
font-family.
`FontLoaderManifestPlugin` creates a manifest of the preloaded font
files for each entrypoint. Preload/preconnect are then added in
`_document.tsx` if any font files were found for that path.
Co-authored-by: JJ Kasper <jj@jjsweb.site>
