feat(vite): detect newly used components while the dev server runs - #7059
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Included review availability: This review used your included allowance. Your plan provides up to 8 included reviews per hour; 7 remain after this review. 📝 WalkthroughWalkthroughThe template plugin now rescans configured component paths after eligible source-file changes in development. When the detected component set changes, it rewrites templates and emits a Vite watcher change for Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: ⚪ Minimal · up to New component use in the previously affected source directories now triggers CSS refresh, and overlapping scans cannot apply stale results. No established merge-blocking issue remains. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
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Inline comments:
In @src/plugins/templates.ts:
- Around line 117-120: Update the redetect function so overlapping scans cannot
apply stale component sets or CSS: serialize scans and template writes, or
discard results superseded by a newer watcher event. Preserve the existing
component-set comparison and apply results only in the correct order.
- Around line 140-141: Update the watcher setup around the
`server.watcher.on('all', ...)` listener to also watch configured
`options.components.dirs` entries outside the Vite root, or trigger the same
refresh when files are added there. Preserve the existing event and file
eligibility checks so new external components receive theme CSS without
requiring another change or server restart.
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docs/content/docs/1.getting-started/2.installation/2.vue.mdsrc/plugins/templates.tstest/utils/template-plugin.spec.ts
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…rs from every level in Progress
# Conflicts: # src/runtime/utils/tv.ts # test/utils/tv-prefix.spec.ts
…efaults and the AI guide on the plugin
…ule sets up first
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🔗 Linked issue
Part of #6918, stacked on #7058. Epic E of #6610: component detection in the Vite dev server.
❓ Type of change
📚 Description
With detection on by default (#7058), a Vue app that starts using a new component in dev got no CSS for it until the dev server restarted, since the Vite plugin only detected once, in its
confighook. Nuxt already re-detects throughbuilder:watch.The plugin now re-detects when a source or Markdown file is added, changed or removed (debounced), and rewrites
ui.csswhen the detected set changes. The templates live innode_modules/.nuxt-ui, which Vite doesn't watch, so it then emits achangeforui.cssitself, and@tailwindcss/viterebuilds the CSS that imports it.Checked with Vite in middleware mode on the
vue-detectionbundle fixture: adding a file with<UCalendar />logsNuxt UI detected new components: Calendar, and the transformed CSS gains its classes (67.8 → 76.2 kB). Removing the file takes them out again. Without the emittedchange,ui.cssis rewritten but the CSS stays the same. A unit test covers the plugin side with a fake watcher.The Vue installation page drops its "restart the dev server" warning.
After the stack review: Hardened: runs are serialized, errors are caught, the unknown-name warnings only print on the first run, and component dirs outside the root are added to the watcher. Nuxt dev now emits
changefor.nuxt/ui.cssafterupdateTemplateswhen it changed, since Vite doesn't watch the build dir.After the design challenge: a re-detection also reloads the
#build/ui/detectedmodule, so the dev warning from #7058 reads the new list.📝 Checklist