feat(module): add theme.unstyled option#6551
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Add a build-time `theme.unstyled` option that blanks every leaf class in component themes before they're written to `#build/ui/*`. Components keep their structure, slots and variant props (color/size/variant still validate), but render with only the classes supplied via `class`, `ui` or `app.config.ui`. Implemented as a third theme transform (`applyUnstyled`) in the existing `applyDefaultVariants` -> `applyPrefixToObject` chain, so it requires zero component changes and removes the default class strings from both the JS bundle and the rendered HTML. Shared by the Nuxt module and the Vue/Vite plugin.
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🔗 Linked issue
Resolves #6169
Part of #4953
❓ Type of change
📚 Description
Adds a build-time
theme.unstyledoption (next totransitions/prefix) that strips Nuxt UI's default theme classes from components.Users have repeatedly asked to drop the default classes, either to bring their own design system on top of the components' logic/a11y, or to cut the HTML/bundle bloat (#6169 calls out both). Today that's impossible:
app.config.uiand:uionly ever merge onto the defaults (tailwind-variantsextendconcatenates,twMergeonly drops conflicting utilities), so non-conflicting defaults always survive.This is solved at the Nuxt UI layer with a theme transform rather than in tailwind-variants:
theme.unstyled?: booleaninmodule.ts(defaultfalse).applyUnstyledinsrc/utils/theme.tsblanks every leaf class inslots/variants/compoundVariantswhile keeping all keys, so slots stay callable andcolor/size/variantprops still validate.applyDefaultVariants→applyPrefixToObjectchain intemplates.ts(prod + dev paths).#build/ui/*, which is now blank, so empty slots mean no class strings in the JS bundle or the HTML.app.config.ui.*then merges cleanly onto empty slots, with no tailwind-merge fighting.Shared by both the Nuxt module and the Vue/Vite plugin (same
getTemplatespipeline).Warning
unstyledstrips structural classes too (positioning, transitions, flex/grid), not just cosmetic ones. Layout-heavy components likeModal,DrawerorCalendarneed the user to re-supply layout, same model as PrimeVue's unstyled mode. This is documented.📝 Checklist