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fix(manifest): use resolved virtual module ID for CSS imports in Vite 8 #2293

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waterWang wants to merge 1 commit into from
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fix(manifest): use resolved virtual module ID for CSS imports in Vite 8 #2293

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13 changes: 11 additions & 2 deletions packages/start/src/server/collect-styles.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -72,9 +72,18 @@ export async function findStylesInModuleGraph(
const styles: Record<string, any> = {};
for (const dep of dependencies) {
if (dep.id && isCssFile(dep.url)) {
styles[dep.id] = dep.url;
// Virtual modules (e.g. UnoCSS /__uno.css) have dep.file === null and
// dep.id starting with \0. Using dep.url (e.g. "/__uno.css") in the
// generated import() fails in Vite 8 module runner with ERR_DENIED_ID
// because the URL looks like a nonexistent filesystem path.
//
// Instead, use dep.id (the resolved virtual module ID, e.g. \0virtual:uno.css)
// which wrapId() converts to /@id/__x00__virtual:uno.css — a safe form
// that Vite's /@id/ resolution plugin can resolve through the plugin pipeline.
// Real CSS files (dep.file is set) keep using dep.url as before.
styles[dep.id] = dep.file === null ? dep.id : dep.url;
}
}

return styles;
}
}
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