fix(nuxt): do not inline global styles in html response (#8666)

packages/nuxt/src/core/runtime/nitro/renderer.ts

@@ -289,19 +289,15 @@ function renderHTMLDocument (html: NuxtRenderHTMLContext) {
 }
 
 async function renderInlineStyles (usedModules: Set<string> | string[]) {
-  const { entryCSS } = await getClientManifest()
   const styleMap = await getSSRStyles()
   const inlinedStyles = new Set<string>()
-  for (const mod of ['entry', ...usedModules]) {
+  for (const mod of usedModules) {
     if (mod in styleMap) {
       for (const style of await styleMap[mod]()) {
         inlinedStyles.add(`<style>${style}</style>`)
       }
     }
   }
-  for (const css of entryCSS?.css || []) {
-    inlinedStyles.add(`<link rel="stylesheet" href=${JSON.stringify(buildAssetsURL(css))} media="print" onload="this.media='all'; this.onload=null;">`)
-  }
   return Array.from(inlinedStyles).join('')
 }
 

packages/vite/src/plugins/ssr-styles.ts

@@ -5,7 +5,6 @@ import { dirname, relative } from 'pathe'
 import { genObjectFromRawEntries } from 'knitwork'
 import { filename } from 'pathe/utils'
 import { parseQuery, parseURL } from 'ufo'
-import { isCSS } from '../utils'
 
 interface SSRStylePluginOptions {
   srcDir: string
@@ -16,7 +15,6 @@ interface SSRStylePluginOptions {
 export function ssrStylesPlugin (options: SSRStylePluginOptions): Plugin {
   const cssMap: Record<string, { files: string[], inBundle: boolean }> = {}
   const idRefMap: Record<string, string> = {}
-  const globalStyles = new Set<string>()
 
   const relativeToSrcDir = (path: string) => relative(options.srcDir, path)
 
@@ -49,8 +47,6 @@ export function ssrStylesPlugin (options: SSRStylePluginOptions): Plugin {
         })
       }
 
-      const globalStylesArray = Array.from(globalStyles).map(css => idRefMap[css] && this.getFileName(idRefMap[css])).filter(Boolean)
-
       for (const key in emitted) {
         // Track the chunks we are inlining CSS for so we can omit including links to the .css files
         options.chunksWithInlinedCSS.add(key)
@@ -61,12 +57,10 @@ export function ssrStylesPlugin (options: SSRStylePluginOptions): Plugin {
         fileName: 'styles.mjs',
         source:
           [
-            ...globalStylesArray.map((css, i) => `import style_${i} from './${css}';`),
             'const interopDefault = r => r.default || r || []',
-            `export default ${genObjectFromRawEntries([
+            `export default ${genObjectFromRawEntries(
-              ['entry', `() => [${globalStylesArray.map((_, i) => `style_${i}`).join(', ')}]`],
+              Object.entries(emitted).map(([key, value]) => [key, `() => import('./${this.getFileName(value)}').then(interopDefault)`]) as [string, string][]
-              ...Object.entries(emitted).map(([key, value]) => [key, `() => import('./${this.getFileName(value)}').then(interopDefault)`]) as [string, string][]
+            )}`
-            ])}`
           ].join('\n')
       })
     },
@@ -80,14 +74,6 @@ export function ssrStylesPlugin (options: SSRStylePluginOptions): Plugin {
         }
       }
 
-      if (chunk.isEntry) {
-        // Entry
-        for (const mod in chunk.modules) {
-          if (isCSS(mod) && !mod.includes('&used')) {
-            globalStyles.add(relativeToSrcDir(mod))
-          }
-        }
-      }
       return null
     },
     async transform (code, id) {

packages/vite/src/server.ts

@@ -126,16 +126,6 @@ export async function buildServer (ctx: ViteBuildContext) {
         if (shouldRemoveCSS) {
           entry.css = []
         }
-        // Add entry CSS as prefetch (non-blocking)
-        if (entry.isEntry) {
-          manifest.entryCSS = {
-            file: '',
-            css: entry.css
-          }
-          entry.css = []
-          entry.dynamicImports = entry.dynamicImports || []
-          entry.dynamicImports.push('entryCSS')
-        }
       }
     })
   }

test/basic.test.ts

@@ -598,19 +598,18 @@ describe.skipIf(process.env.NUXT_TEST_DEV || process.env.TEST_WITH_WEBPACK)('inl
     for (const style of [
       '{--assets:"assets"}', // <script>
       '{--scoped:"scoped"}', // <style lang=css>
-      '{--postcss:"postcss"}', // <style lang=postcss>
+      '{--postcss:"postcss"}' // <style lang=postcss>
-      '{--global:"global"', // entryfile dependency
-      '{--plugin:"plugin"}' // plugin dependency
     ]) {
       expect(html).toContain(style)
     }
   })
 
-  it('only renders prefetch for entry styles', async () => {
+  it('does not load stylesheet for page styles', async () => {
     const html: string = await $fetch('/styles')
     expect(html.match(/<link [^>]*href="[^"]*\.css">/g)?.filter(m => m.includes('entry'))?.map(m => m.replace(/\.[^.]*\.css/, '.css'))).toMatchInlineSnapshot(`
       [
-        "<link rel=\\"prefetch\\" as=\\"style\\" href=\\"/_nuxt/entry.css\\">",
+        "<link rel=\\"preload\\" as=\\"style\\" href=\\"/_nuxt/entry.css\\">",
+        "<link rel=\\"stylesheet\\" href=\\"/_nuxt/entry.css\\">",
       ]
     `)
   })