vercel
Fix Google Fonts missing font hinting info
What?
Ensure that the fonts fetched from Google Fonts contain font hinting instructions.
Why?
Google Fonts returns files that have the font hinting instructions removed when the user agent is set as OSX. This is almost certainly due to the fact that OSX disabled sub-pixel antialiasing by default with the release of Mojave.
If you are using a lower desity screen and are on windows(or have manually enabled sub-pixel antialiasing on OSX) then the fonts will render poorly without the font hinting.
Google is only able to safely omit this info (in the interest of saving a bit of bandwidth) because they are doing OS detection, unless next.js wants to do the same it should be using the files that render correctly in all environments.
How?
The hardcoded user agent in the font fetching logic was replaced with an equivalent windows one.
Fixes #78118
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