Fix extensionless Google font URLs in both bundlers (#100158)
Fixes #99114 in both Turbopack and Webpack
Due to Google Fonts dynamically returning the "best" font for the UA, it
sometimes comes back as WOFF2 without an extension. We hardcode an
extension expectation, so this fails:
Webpack assumed every font URL ended in an extension, causing a
null-regex crash.
Turbopack split JSON options at embedded `&` characters. After that, its
extension check would also fail
The solution:
For Webpack, remove the unsafe dereference, and resolve the extension
from the CSS `format('XYZ')` hint when the URL lacks an extension
For Turbopack, carry the resolved font extension from CSS extraction
into asset emission instead of requiring a URL suffix.
Also while investigating, Fleet found another bug: it parses the
serialized options as a query string, so embedded `&` characters split
the options before it ever reaches the extension check. To fix, we now
percent-encode the entire JSON as one query entry, preserving the
embedded params.
---------
Co-authored-by: vercel-fleet-prod[bot] <318278635+vercel-fleet-prod[bot]@users.noreply.github.com>
Co-authored-by: Andrew Imm <494043+andrewimm@users.noreply.github.com>
Co-authored-by: Tobias Koppers <1365881+sokra@users.noreply.github.com>
