Plan step 41 review: an application's CSS entry may import what a Vite
build resolves but Stylesheets::bundle() refuses (tailwindcss mid-
migration, a font URL, a layer() import); resolvedFiles() threw on each,
failing the application's whole design test. It now follows relative
imports only and skips the rest. Each missing stylesheet, shadowed tag
and ->links() is reported once, at its first use, instead of at every
occurrence; a CSS entry that does not exist says so; the @import line goes
through vendor/ when Composer symlinks the package.
missingStylesheets() also switched on the literal-value check for the
entry's whole import graph, vendor stylesheets included, with no way to
check imports alone. Check (iii) now reads the .css files scan() is given,
like every other check; the entry's imports still feed the class
exemptions, now escaped selectors (.hover\:underline) included.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
Plan step 41 (ii): the design guard needs the set of files an application's
CSS entry pulls in, transitively, to check whether a package tag's
stylesheet is among them — reusing bundle()'s own import resolution and
cache rather than re-implementing @import parsing.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
Plan step 37 review. The Vite test counted each of four files' plain
root rule, which the minifier folds into one even when a build repeats
the whole stylesheet: it passed against the Workbench's Tailwind entry,
which repeated 231 rules. It now asserts that no innermost rule repeats
under the same at-rules, which that build fails and a deduplicating one
passes, and it builds a second entry shaped like an application's —
outside the package, the foundation, then four component stylesheets
that each import button.css, and button.css again — where button.css
must also keep its first position. The fixture config refuses to run
without DEDUP_OUT_DIR, so it never writes into the package tree.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
Plan step 37 review. bundle() left an @import it did not recognise
exactly as written, in the middle of the output, where a browser ignores
it: a layer(), supports() or media condition was silently dropped, an
unquoted url(./x.css) import was left in place with its path mangled by
the url() rewrite, and a bare specifier or absolute URL vanished the same
way. An @import after a rule or inside a @layer block was inlined anyway,
nesting a whole file's layers inside another. Each now throws, naming the
file; unquoted url() imports and @IMPORT inline like the other forms.
The cache keyed only the top-level files' mtimes, so a changed
button.css left a cached all.css bundle standing in a long-lived worker;
a cached bundle is now served only while every file it inlined keeps its
mtime. A null and an empty $base no longer share a cache key, a leading
@charset or byte-order mark is dropped from each inlined file, and a
test pins the import graph free of cycles, the one case where a
depth-first bundle would place a stylesheet before a file it imports.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
Plan step 37: the showcase and the error page's fallback serve CSS
without the application's Vite build, so nothing deduplicates their
@imports for them the way Vite's bundled postcss-import does — a
browser's native @import fetches every occurrence, it does not skip a
file it already loaded. Stylesheets::bundle(array $files, ?string
$base = null): string does in PHP what that build step does: it
inlines every @import depth-first, each file once, first occurrence
kept; leaves a bare specifier or an absolute URL untouched; rewrites a
relative url() against $base (or, without one, against the directory
of $files[0]); breaks a cycle instead of looping; throws naming the
importer when an import is missing; and caches per resolved file list
and mtime, with resetCache() for tests.
tests/Feature/StylesheetsBundleTest.php covers bundle()'s own
behaviour (dedup, url() rewriting, cycles, the missing-import
exception, the cache) and, at the end, pins the Vite deduplication
bundle() is modelled on against a real build — of all.css alone
(tests/Fixtures/dedup.vite.config.mjs), whose docblock explains why:
the Workbench's own entry still shares one file with @tailwindcss/vite
until plan step 39 removes it, and that plugin bundles its whole
reachable module graph itself, without the same dedup guarantee.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
