Tailwind registers internal slots (`--tw-content`, `--tw-shadow`, …) via
`@property` rules that supply their defaults. `decompose` dropped those
rules, so utilities that reference a slot without setting it locally —
notably `after:*`/`before:*` emitting `content: var(--tw-content)` — left
a dangling reference that resolves to nothing and suppresses the
pseudo-element.
`decompose` now captures the `@property` registrations, and `emitCss`
gains a `properties` option to handle them, configurably:
- `mode: 'emit'` — emit `@property` rules for referenced slots,
preserving Tailwind's typed defaults.
- `mode: 'inline'` — substitute each slot's `initial-value` into the
values that reference it (a superset of `inlineVars` for the matched
slots), so the output is fully self-contained.
- `resolve(name, captured)` hook — override or supply a slot's config
(initial-value / syntax / inherits), or register one Tailwind didn't.
- `match` — restrict handling to matching names (default `/^--tw-/`).
`tailwindPlugin` forwards `properties` through its `onCss` path. Adds 9
tests (capture, emit, inline, resolve override, match, back-compat,
plugin e2e). Compiler suite: 178 passing.
Update the rebase audit: marker-class drop, class-name collisions, and
undefined theme vars are fixed; note the remaining `--tw-*` @property
follow-up and the real collisions the new diagnostic will surface during
the port.
The in-flight compiler skin migration refactored the shared Tailwind token
modules from main's function API (`root = (isShadowDOM) => cn(...)`, flat
exports) into a string-aggregate API (`video`/`audio` nested objects) that
the constrained-JSX skins consume. Since then, main built 16 runtime skin
files on the function API — including the new live-video / live-audio
presets — which the new token shape cannot satisfy without porting.
Rather than regress main's skins or break the build, park the authored
migration sources (constrained-JSX skins + refactored token layer +
tailwind.css) under packages/skins/__old__, a sibling of src/ that sits
outside the package tsconfig include, tsdown globs, and (via biome ignore)
linting. Main remains the source of truth for live skins.
The full migration snapshot (build wiring, generated React skins/CSS, core
manifests, icons generate config, html/react edits) is preserved in the
git tag backup/pre-rebase-2b2bbfad. The audit and port backlog live in
.claude/plans/compiler-rebase-audit.md.
Rahim