Work on removing vite-postprocess

.github/workflows/ci.yml

@@ -88,10 +88,10 @@ jobs:
         uses: actions/cache@v2
         with:
           path: "**/node_modules"
-          key: cache-node_modules-${{ hashFiles('**/yarn.lock') }}-${{ github.run_id }}
+          key: cache-node_modules-${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}-${{ github.run_id }}
           restore-keys: |
-            cache-node_modules-${{ hashFiles('**/yarn.lock') }}-${{ github.run_id }}
-            cache-node_modules-${{ hashFiles('**/yarn.lock') }}-
+            cache-node_modules-${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}-${{ github.run_id }}
+            cache-node_modules-${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}-
 
       - name: Install NPM Dependencies
         run: yarn install --prefer-offline --frozen-lockfile --ignore-engines --registry https://registry.npmjs.org --network-timeout 300000

docs/src/pages/de/guides/styling.md

@@ -10,7 +10,6 @@ Astro verfügt über eine besondere Möglichkeit, um das Schreiben von CSS so ei
 
 Standardmäßig werden in Astro-Komponenten alle Styles nur auf Elemente im Rahmen der Komponente (genannt **Scope**) angewandt, der sie hinzugefügt wurden. Dies kann die Arbeit mit Styles erheblich erleichtern, da du dich zu jeder Zeit nur um die Gestaltung der Komponente kümmern musst, an der du arbeitest.
 
-
 ```html
 <!-- src/components/MeineKomponente.astro -->
 <style>
@@ -25,7 +24,9 @@ Standardmäßig werden in Astro-Komponenten alle Styles nur auf Elemente im Rahm
 </style>
 
 <h1>Ich bin ein Style im Scope der Komponente, und ich bin rot!</h1>
-<p class="text">Ich bin ein Style im Scope der Komponente, und ich bin kursiv!!</p>
+<p class="text">
+  Ich bin ein Style im Scope der Komponente, und ich bin kursiv!!
+</p>
 ```
 
 Beachte dass der der `h1`-Selektor hier nicht über die Komponente hinaus wirksam wird! Die Styles werden nicht auf andere `h1`-Tags außerhalb dieses Dokuments angewandt - auch nicht in untergeordneten Komponenten.
@@ -148,13 +149,12 @@ Du kannst jedes beliebige PostCSS-Plugin verwenden, indem du eine `postcss.confi
 
 Styling in Astro sollte so flexibel sein, wie du es haben willst! Die folgenden Optionen werden unterstützt:
 
-| Framework        | Globales CSS | Scoped CSS |  CSS-Modules  |
-| :--------------- | :----------: | :--------: | :----------: |
-| `.astro`         |      ✅      |     ✅     |     N/A¹     |
-| `.jsx` \| `.tsx` |      ✅      |     ❌     |      ✅      |
-| `.vue`           |      ✅      |     ✅     |      ✅      |
-| `.svelte`        |      ✅      |     ✅     |      ❌      |
-
+| Framework        | Globales CSS | Scoped CSS | CSS-Modules |
+| :--------------- | :----------: | :--------: | :---------: |
+| `.astro`         |      ✅      |     ✅     |    N/A¹     |
+| `.jsx` \| `.tsx` |      ✅      |     ❌     |     ✅      |
+| `.vue`           |      ✅      |     ✅     |     ✅      |
+| `.svelte`        |      ✅      |     ✅     |     ❌      |
 
 ¹ _`.astro`-Dateien haben keine Laufzeit, daher nimmt Scoped-CSS hier den Platz von CSS-Modules ein (Styles sind im Scope der Komponenten, benötigen aber keine dynamischen Werte)_
 
@@ -276,7 +276,7 @@ Sämtliches CSS wird minifiziert und automatisch gebündelt, wenn du `astro buil
 
 Wir werden unsere Styling-Optimierungen im Laufe der Zeit stetig weiterentwickeln und würden gerne euer Feedback dazu hören! Falls `astro build` unerwartete Styles generiert, oder wenn du Vorschläge zur Verbesserung hast, [eröffne bitte ein Issue][issues].
 
-_Beachte: Wenn einige Seiten-Styles gemeinsam gebündelt werden und andere Seiten-Styles auf die Seite bezogen bleiben, entwickeln sich hieraus meistens keine Probleme. Aber wenn Teile deiner Styles gebündelt werden, könnten sie _technisch_ auch in einer anderen Reihenfolge laden, als von dir in deiner Kaskade intendiert. Auch wenn dieses Problem nicht nur Astro zu eigen ist - es besteht potentiell bei so ziemlich jedem Bündelungsprozess - so kann es dich doch unerwartet treffen, wenn du diese Möglichkeit nicht von vorne herein in Betracht ziehst. Stelle sicher, dass du deinen abschließenden Build eingehend diesbezüglich inspizierst - und [melde bitte auftretende Probleme][issues], auf die du stößt._
+_Beachte: Wenn einige Seiten-Styles gemeinsam gebündelt werden und andere Seiten-Styles auf die Seite bezogen bleiben, entwickeln sich hieraus meistens keine Probleme. Aber wenn Teile deiner Styles gebündelt werden, könnten sie \_technisch_ auch in einer anderen Reihenfolge laden, als von dir in deiner Kaskade intendiert. Auch wenn dieses Problem nicht nur Astro zu eigen ist - es besteht potentiell bei so ziemlich jedem Bündelungsprozess - so kann es dich doch unerwartet treffen, wenn du diese Möglichkeit nicht von vorne herein in Betracht ziehst. Stelle sicher, dass du deinen abschließenden Build eingehend diesbezüglich inspizierst - und [melde bitte auftretende Probleme][issues], auf die du stößt.\_
 
 ## Fortgeschrittene Styling-Architektur
 
@@ -389,10 +389,7 @@ In Astro empfehlen wir folgendes Setup hierfür:
 
 ```html
 <head>
-  <link
-    rel="stylesheet"
-    href={Astro.resolve("../styles/global.css")}
-  >
+  <link rel="stylesheet" href={Astro.resolve("../styles/global.css")} >
 </head>
 ```
 

docs/src/pages/guides/aliases.md

@@ -26,12 +26,8 @@ You can add import aliases from either `tsconfig.json` or `jsconfig.json`.
   "compilerOptions": {
     "baseUrl": ".",
     "paths": {
-      "asset:*": [
-        "src/assets/*?url"
-      ],
-      "component:*": [
-        "src/components/*.astro"
-      ]
+      "asset:*": ["src/assets/*?url"],
+      "component:*": ["src/components/*.astro"]
     }
   }
 }

examples/fast-build/astro.config.mjs

@@ -0,0 +1,11 @@
+import { imagetools } from 'vite-imagetools';
+
+// @ts-check
+export default /** @type {import('astro').AstroUserConfig} */ ({
+  renderers: [
+    "@astrojs/renderer-vue"
+  ],
+  vite: {
+    plugins: [imagetools()]
+  }
+});

examples/fast-build/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "@example/fast-build",
+  "version": "0.0.1",
+  "private": true,
+  "scripts": {
+    "dev": "astro dev --experimental-static-build",
+    "start": "astro dev",
+    "build": "astro build --experimental-static-build",
+    "preview": "astro preview"
+  },
+  "devDependencies": {
+    "astro": "^0.21.6",
+    "unocss": "^0.15.5",
+    "vite-imagetools": "^4.0.1"
+  }
+}

examples/fast-build/src/components/Counter.vue

@@ -0,0 +1,24 @@
+<template>
+  <div id="vue" class="counter">
+      <button @click="subtract()">-</button>
+      <pre>{{ count }}</pre>
+      <button @click="add()">+</button>
+  </div>
+</template>
+
+<script>
+import { ref } from 'vue';
+export default {
+  setup() {
+    const count = ref(0)
+    const add = () => count.value = count.value + 1;
+    const subtract = () => count.value = count.value - 1;
+
+    return {
+      count,
+      add,
+      subtract
+    }
+  }
+}
+</script>

examples/fast-build/src/components/Greeting.vue

@@ -0,0 +1,20 @@
+<script>
+export default {
+  data() {
+    return {
+      greeting: 'Hello World!',
+    };
+  },
+};
+</script>
+
+<template>
+  <p class="greeting">{{ greeting }}</p>
+</template>
+
+<style>
+.greeting {
+  color: red;
+  font-weight: bold;
+}
+</style>

examples/fast-build/src/pages/index.astro

@@ -0,0 +1,38 @@
+---
+import imgUrl from '../images/penguin.jpg';
+import grayscaleUrl from '../images/random.jpg?grayscale=true';
+import Greeting from '../components/Greeting.vue';
+import Counter from '../components/Counter.vue';
+---
+
+<html>
+<head>
+  <title>Demo app</title>
+  <style>
+    h1 { color: salmon; }
+  </style>
+</head>
+<body>
+  <section>
+    <h1>Images</h1>
+
+    <h2>Imported in JS</h2>
+    <img src={imgUrl} />
+  </section>
+
+  <section>
+    <h1>Component CSS</h1>
+    <Greeting />
+  </section>
+
+  <section>
+    <h1>ImageTools</h1>
+    <img src={grayscaleUrl} />
+  </section>
+
+  <section>
+    <h1>Hydrated component</h1>
+    <Counter client:idle />
+  </section>
+</body>
+</html>

examples/fast-build/src/styles/global.css

@@ -0,0 +1,3 @@
+body {
+  background: lightcoral;
+}

packages/astro/package.json

@@ -56,7 +56,7 @@
     "test": "mocha --parallel --timeout 15000"
   },
   "dependencies": {
-    "@astrojs/compiler": "^0.5.4",
+    "@astrojs/compiler": "^0.6.0",
     "@astrojs/language-server": "^0.8.2",
     "@astrojs/markdown-remark": "^0.5.0",
     "@astrojs/prism": "0.3.0",

packages/astro/src/@types/astro.ts

@@ -363,11 +363,14 @@ export interface SSRElement {
 export interface SSRMetadata {
   renderers: Renderer[];
   pathname: string;
+  experimentalStaticBuild: boolean;
 }
 
 export interface SSRResult {
   styles: Set<SSRElement>;
   scripts: Set<SSRElement>;
+  links: Set<SSRElement>;
   createAstro(Astro: AstroGlobalPartial, props: Record<string, any>, slots: Record<string, any> | null): AstroGlobal;
+  resolve: (s: string) => Promise<string>;
   _metadata: SSRMetadata;
 }

packages/astro/src/cli/index.ts

@@ -25,6 +25,7 @@ interface CLIState {
     hostname?: string;
     port?: number;
     config?: string;
+    experimentalStaticBuild?: boolean;
   };
 }
 
@@ -37,6 +38,7 @@ function resolveArgs(flags: Arguments): CLIState {
     port: typeof flags.port === 'number' ? flags.port : undefined,
     config: typeof flags.config === 'string' ? flags.config : undefined,
     hostname: typeof flags.hostname === 'string' ? flags.hostname : undefined,
+    experimentalStaticBuild: typeof flags.experimentalStaticBuild === 'boolean' ? flags.experimentalStaticBuild : false,
   };
 
   if (flags.version) {
@@ -73,6 +75,7 @@ function printHelp() {
   --config <path>       Specify the path to the Astro config file.
   --project-root <path> Specify the path to the project root folder.
   --no-sitemap          Disable sitemap generation (build only).
+  --experimental-static-build A more performant build that expects assets to be define statically.
   --verbose             Enable verbose logging
   --silent              Disable logging
   --version             Show the version number and exit.
@@ -92,6 +95,7 @@ function mergeCLIFlags(astroConfig: AstroConfig, flags: CLIState['options']) {
   if (typeof flags.site === 'string') astroConfig.buildOptions.site = flags.site;
   if (typeof flags.port === 'number') astroConfig.devOptions.port = flags.port;
   if (typeof flags.hostname === 'string') astroConfig.devOptions.hostname = flags.hostname;
+  if (typeof flags.experimentalStaticBuild === 'boolean') astroConfig.buildOptions.experimentalStaticBuild = flags.experimentalStaticBuild;
 }
 
 /** The primary CLI action */

packages/astro/src/core/build/index.ts

@@ -1,22 +1,17 @@
-import type { AstroConfig, ComponentInstance, GetStaticPathsResult, ManifestData, RouteCache, RouteData, RSSResult } from '../../@types/astro';
+import type { AstroConfig, ManifestData, RouteCache } from '../../@types/astro';
 import type { LogOptions } from '../logger';
-import type { AllPagesData } from './types';
-import type { RenderedChunk } from 'rollup';
 
-import { rollupPluginAstroBuildHTML } from '../../vite-plugin-build-html/index.js';
-import { rollupPluginAstroBuildCSS } from '../../vite-plugin-build-css/index.js';
 import fs from 'fs';
 import * as colors from 'kleur/colors';
 import { performance } from 'perf_hooks';
 import vite, { ViteDevServer } from '../vite.js';
-import { fileURLToPath } from 'url';
 import { createVite, ViteConfigWithSSR } from '../create-vite.js';
 import { debug, defaultLogOptions, info, levels, timerMessage, warn } from '../logger.js';
-import { preload as ssrPreload } from '../ssr/index.js';
-import { generatePaginateFunction } from '../ssr/paginate.js';
-import { createRouteManifest, validateGetStaticPathsModule, validateGetStaticPathsResult } from '../ssr/routing.js';
-import { generateRssFunction } from '../ssr/rss.js';
+import { createRouteManifest } from '../ssr/routing.js';
 import { generateSitemap } from '../ssr/sitemap.js';
+import { collectPagesData } from './page-data.js';
+import { build as scanBasedBuild } from './scan-based-build.js';
+import { staticBuild } from './static-build.js';
 
 export interface BuildOptions {
   mode?: string;
@@ -76,137 +71,45 @@ class AstroBuilder {
     debug(logging, 'build', timerMessage('Vite started', timer.viteStart));
 
     timer.loadStart = performance.now();
-    const assets: Record<string, string> = {};
-    const allPages: AllPagesData = {};
-    // Collect all routes ahead-of-time, before we start the build.
-    // NOTE: This enforces that `getStaticPaths()` is only called once per route,
-    // and is then cached across all future SSR builds. In the past, we've had trouble
-    // with parallelized builds without guaranteeing that this is called first.
-    await Promise.all(
-      this.manifest.routes.map(async (route) => {
-        // static route:
-        if (route.pathname) {
-          allPages[route.component] = {
-            route,
-            paths: [route.pathname],
-            preload: await ssrPreload({
-              astroConfig: this.config,
-              filePath: new URL(`./${route.component}`, this.config.projectRoot),
-              logging,
-              mode: 'production',
-              origin,
-              pathname: route.pathname,
-              route,
-              routeCache: this.routeCache,
-              viteServer,
-            })
-              .then((routes) => {
-                const html = `${route.pathname}`.replace(/\/?$/, '/index.html');
-                debug(logging, 'build', `├── ${colors.bold(colors.green('✔'))} ${route.component} → ${colors.yellow(html)}`);
-                return routes;
-              })
-              .catch((err) => {
-                debug(logging, 'build', `├── ${colors.bold(colors.red('✘'))} ${route.component}`);
-                throw err;
-              }),
-          };
-          return;
-        }
-        // dynamic route:
-        const result = await this.getStaticPathsForRoute(route)
-          .then((routes) => {
-            const label = routes.paths.length === 1 ? 'page' : 'pages';
-            debug(logging, 'build', `├── ${colors.bold(colors.green('✔'))} ${route.component} → ${colors.magenta(`[${routes.paths.length} ${label}]`)}`);
-            return routes;
-          })
-          .catch((err) => {
-            debug(logging, 'build', `├── ${colors.bold(colors.red('✗'))} ${route.component}`);
-            throw err;
-          });
-        if (result.rss?.xml) {
-          const rssFile = new URL(result.rss.url.replace(/^\/?/, './'), this.config.dist);
-          if (assets[fileURLToPath(rssFile)]) {
-            throw new Error(`[getStaticPaths] RSS feed ${result.rss.url} already exists.\nUse \`rss(data, {url: '...'})\` to choose a unique, custom URL. (${route.component})`);
-          }
-          assets[fileURLToPath(rssFile)] = result.rss.xml;
-        }
-        allPages[route.component] = {
-          route,
-          paths: result.paths,
-          preload: await ssrPreload({
-            astroConfig: this.config,
-            filePath: new URL(`./${route.component}`, this.config.projectRoot),
-            logging,
-            mode: 'production',
-            origin,
-            pathname: result.paths[0],
-            route,
-            routeCache: this.routeCache,
-            viteServer,
-          }),
-        };
-      })
-    );
+    const { assets, allPages } = await collectPagesData({
+      astroConfig: this.config,
+      logging: this.logging,
+      manifest: this.manifest,
+      origin,
+      routeCache: this.routeCache,
+      viteServer: this.viteServer,
+    });
     debug(logging, 'build', timerMessage('All pages loaded', timer.loadStart));
 
-    // Pure CSS chunks are chunks that only contain CSS.
-    // This is all of them, and chunkToReferenceIdMap maps them to a hash id used to find the final file.
-    const pureCSSChunks = new Set<RenderedChunk>();
-    const chunkToReferenceIdMap = new Map<string, string>();
-
-    // This is a mapping of pathname to the string source of all collected
-    // inline <style> for a page.
-    const astroStyleMap = new Map<string, string>();
-    // This is a virtual JS module that imports all dependent styles for a page.
-    const astroPageStyleMap = new Map<string, string>();
-
+    // The names of each pages
     const pageNames: string[] = [];
 
     // Bundle the assets in your final build: This currently takes the HTML output
     // of every page (stored in memory) and bundles the assets pointed to on those pages.
     timer.buildStart = performance.now();
-    await vite.build({
-      logLevel: 'error',
-      mode: 'production',
-      build: {
-        emptyOutDir: true,
-        minify: 'esbuild', // significantly faster than "terser" but may produce slightly-bigger bundles
-        outDir: fileURLToPath(this.config.dist),
-        rollupOptions: {
-          // The `input` will be populated in the build rollup plugin.
-          input: [],
-          output: { format: 'esm' },
-        },
-        target: 'es2020', // must match an esbuild target
-      },
-      plugins: [
-        rollupPluginAstroBuildHTML({
-          astroConfig: this.config,
-          astroPageStyleMap,
-          astroStyleMap,
-          chunkToReferenceIdMap,
-          pureCSSChunks,
-          logging,
-          origin,
-          allPages,
-          pageNames,
-          routeCache: this.routeCache,
-          viteServer,
-        }),
-        rollupPluginAstroBuildCSS({
-          astroPageStyleMap,
-          astroStyleMap,
-          chunkToReferenceIdMap,
-          pureCSSChunks,
-        }),
-        ...(viteConfig.plugins || []),
-      ],
-      publicDir: viteConfig.publicDir,
-      root: viteConfig.root,
-      envPrefix: 'PUBLIC_',
-      server: viteConfig.server,
-      base: this.config.buildOptions.site ? new URL(this.config.buildOptions.site).pathname : '/',
-    });
+
+    // Use the new faster static based build.
+    if (this.config.buildOptions.experimentalStaticBuild) {
+      await staticBuild({
+        allPages,
+        astroConfig: this.config,
+        logging: this.logging,
+        origin: this.origin,
+        routeCache: this.routeCache,
+        viteConfig: this.viteConfig,
+      });
+    } else {
+      await scanBasedBuild({
+        allPages,
+        astroConfig: this.config,
+        logging: this.logging,
+        origin: this.origin,
+        pageNames,
+        routeCache: this.routeCache,
+        viteConfig: this.viteConfig,
+        viteServer: this.viteServer,
+      });
+    }
     debug(logging, 'build', timerMessage('Vite build finished', timer.buildStart));
 
     // Write any additionally generated assets to disk.
@@ -237,22 +140,6 @@ class AstroBuilder {
     }
   }
 
-  /** Extract all static paths from a dynamic route */
-  private async getStaticPathsForRoute(route: RouteData): Promise<{ paths: string[]; rss?: RSSResult }> {
-    if (!this.viteServer) throw new Error(`vite.createServer() not called!`);
-    const filePath = new URL(`./${route.component}`, this.config.projectRoot);
-    const mod = (await this.viteServer.ssrLoadModule(fileURLToPath(filePath))) as ComponentInstance;
-    validateGetStaticPathsModule(mod);
-    const rss = generateRssFunction(this.config.buildOptions.site, route);
-    const staticPaths: GetStaticPathsResult = (await mod.getStaticPaths!({ paginate: generatePaginateFunction(route), rss: rss.generator })).flat();
-    this.routeCache[route.component] = staticPaths;
-    validateGetStaticPathsResult(staticPaths, this.logging);
-    return {
-      paths: staticPaths.map((staticPath) => staticPath.params && route.generate(staticPath.params)).filter(Boolean),
-      rss: rss.rss,
-    };
-  }
-
   /** Stats */
   private async printStats({ logging, timeStart, pageCount }: { logging: LogOptions; timeStart: number; pageCount: number }) {
     /* eslint-disable no-console */

packages/astro/src/core/build/internal.ts

@@ -0,0 +1,48 @@
+import type { RenderedChunk } from 'rollup';
+
+export interface BuildInternals {
+  // Pure CSS chunks are chunks that only contain CSS.
+  pureCSSChunks: Set<RenderedChunk>;
+  // chunkToReferenceIdMap maps them to a hash id used to find the final file.
+  chunkToReferenceIdMap: Map<string, string>;
+
+  // This is a mapping of pathname to the string source of all collected
+  // inline <style> for a page.
+  astroStyleMap: Map<string, string>;
+  // This is a virtual JS module that imports all dependent styles for a page.
+  astroPageStyleMap: Map<string, string>;
+
+  // A mapping to entrypoints (facadeId) to assets (styles) that are added.
+  facadeIdToAssetsMap: Map<string, string[]>;
+
+  entrySpecifierToBundleMap: Map<string, string>;
+}
+
+/**
+ * Creates internal maps used to coordinate the CSS and HTML plugins.
+ * @returns {BuildInternals}
+ */
+export function createBuildInternals(): BuildInternals {
+  // Pure CSS chunks are chunks that only contain CSS.
+  // This is all of them, and chunkToReferenceIdMap maps them to a hash id used to find the final file.
+  const pureCSSChunks = new Set<RenderedChunk>();
+  const chunkToReferenceIdMap = new Map<string, string>();
+
+  // This is a mapping of pathname to the string source of all collected
+  // inline <style> for a page.
+  const astroStyleMap = new Map<string, string>();
+  // This is a virtual JS module that imports all dependent styles for a page.
+  const astroPageStyleMap = new Map<string, string>();
+
+  // A mapping to entrypoints (facadeId) to assets (styles) that are added.
+  const facadeIdToAssetsMap = new Map<string, string[]>();
+
+  return {
+    pureCSSChunks,
+    chunkToReferenceIdMap,
+    astroStyleMap,
+    astroPageStyleMap,
+    facadeIdToAssetsMap,
+    entrySpecifierToBundleMap: new Map<string, string>(),
+  };
+}

packages/astro/src/core/build/page-data.ts

@@ -0,0 +1,122 @@
+import type { AstroConfig, ComponentInstance, GetStaticPathsResult, ManifestData, RouteCache, RouteData, RSSResult } from '../../@types/astro';
+import type { AllPagesData } from './types';
+import type { LogOptions } from '../logger';
+import type { ViteDevServer } from '../vite.js';
+
+import { fileURLToPath } from 'url';
+import * as colors from 'kleur/colors';
+import { debug } from '../logger.js';
+import { preload as ssrPreload } from '../ssr/index.js';
+import { validateGetStaticPathsModule, validateGetStaticPathsResult } from '../ssr/routing.js';
+import { generatePaginateFunction } from '../ssr/paginate.js';
+import { generateRssFunction } from '../ssr/rss.js';
+
+export interface CollectPagesDataOptions {
+  astroConfig: AstroConfig;
+  logging: LogOptions;
+  manifest: ManifestData;
+  origin: string;
+  routeCache: RouteCache;
+  viteServer: ViteDevServer;
+}
+
+export interface CollectPagesDataResult {
+  assets: Record<string, string>;
+  allPages: AllPagesData;
+}
+
+// Examines the routes and returns a collection of information about each page.
+export async function collectPagesData(opts: CollectPagesDataOptions): Promise<CollectPagesDataResult> {
+  const { astroConfig, logging, manifest, origin, routeCache, viteServer } = opts;
+
+  const assets: Record<string, string> = {};
+  const allPages: AllPagesData = {};
+
+  // Collect all routes ahead-of-time, before we start the build.
+  // NOTE: This enforces that `getStaticPaths()` is only called once per route,
+  // and is then cached across all future SSR builds. In the past, we've had trouble
+  // with parallelized builds without guaranteeing that this is called first.
+  await Promise.all(
+    manifest.routes.map(async (route) => {
+      // static route:
+      if (route.pathname) {
+        allPages[route.component] = {
+          route,
+          paths: [route.pathname],
+          preload: await ssrPreload({
+            astroConfig,
+            filePath: new URL(`./${route.component}`, astroConfig.projectRoot),
+            logging,
+            mode: 'production',
+            origin,
+            pathname: route.pathname,
+            route,
+            routeCache,
+            viteServer,
+          })
+            .then((routes) => {
+              const html = `${route.pathname}`.replace(/\/?$/, '/index.html');
+              debug(logging, 'build', `├── ${colors.bold(colors.green('✔'))} ${route.component} → ${colors.yellow(html)}`);
+              return routes;
+            })
+            .catch((err) => {
+              debug(logging, 'build', `├── ${colors.bold(colors.red('✘'))} ${route.component}`);
+              throw err;
+            }),
+        };
+        return;
+      }
+      // dynamic route:
+      const result = await getStaticPathsForRoute(opts, route)
+        .then((routes) => {
+          const label = routes.paths.length === 1 ? 'page' : 'pages';
+          debug(logging, 'build', `├── ${colors.bold(colors.green('✔'))} ${route.component} → ${colors.magenta(`[${routes.paths.length} ${label}]`)}`);
+          return routes;
+        })
+        .catch((err) => {
+          debug(logging, 'build', `├── ${colors.bold(colors.red('✗'))} ${route.component}`);
+          throw err;
+        });
+      if (result.rss?.xml) {
+        const rssFile = new URL(result.rss.url.replace(/^\/?/, './'), astroConfig.dist);
+        if (assets[fileURLToPath(rssFile)]) {
+          throw new Error(`[getStaticPaths] RSS feed ${result.rss.url} already exists.\nUse \`rss(data, {url: '...'})\` to choose a unique, custom URL. (${route.component})`);
+        }
+        assets[fileURLToPath(rssFile)] = result.rss.xml;
+      }
+      allPages[route.component] = {
+        route,
+        paths: result.paths,
+        preload: await ssrPreload({
+          astroConfig,
+          filePath: new URL(`./${route.component}`, astroConfig.projectRoot),
+          logging,
+          mode: 'production',
+          origin,
+          pathname: result.paths[0],
+          route,
+          routeCache,
+          viteServer,
+        }),
+      };
+    })
+  );
+
+  return { assets, allPages };
+}
+
+async function getStaticPathsForRoute(opts: CollectPagesDataOptions, route: RouteData): Promise<{ paths: string[]; rss?: RSSResult }> {
+  const { astroConfig, logging, routeCache, viteServer } = opts;
+  if (!viteServer) throw new Error(`vite.createServer() not called!`);
+  const filePath = new URL(`./${route.component}`, astroConfig.projectRoot);
+  const mod = (await viteServer.ssrLoadModule(fileURLToPath(filePath))) as ComponentInstance;
+  validateGetStaticPathsModule(mod);
+  const rss = generateRssFunction(astroConfig.buildOptions.site, route);
+  const staticPaths: GetStaticPathsResult = (await mod.getStaticPaths!({ paginate: generatePaginateFunction(route), rss: rss.generator })).flat();
+  routeCache[route.component] = staticPaths;
+  validateGetStaticPathsResult(staticPaths, logging);
+  return {
+    paths: staticPaths.map((staticPath) => staticPath.params && route.generate(staticPath.params)).filter(Boolean),
+    rss: rss.rss,
+  };
+}

packages/astro/src/core/build/scan-based-build.ts

@@ -0,0 +1,68 @@
+import type { ViteDevServer } from '../vite.js';
+import type { AstroConfig, RouteCache } from '../../@types/astro';
+import type { AllPagesData } from './types';
+import type { LogOptions } from '../logger';
+import type { ViteConfigWithSSR } from '../create-vite.js';
+
+import { fileURLToPath } from 'url';
+import vite from '../vite.js';
+import { createBuildInternals } from '../../core/build/internal.js';
+import { rollupPluginAstroBuildHTML } from '../../vite-plugin-build-html/index.js';
+import { rollupPluginAstroBuildCSS } from '../../vite-plugin-build-css/index.js';
+
+export interface ScanBasedBuildOptions {
+  allPages: AllPagesData;
+  astroConfig: AstroConfig;
+  logging: LogOptions;
+  origin: string;
+  pageNames: string[];
+  routeCache: RouteCache;
+  viteConfig: ViteConfigWithSSR;
+  viteServer: ViteDevServer;
+}
+
+export async function build(opts: ScanBasedBuildOptions) {
+  const { allPages, astroConfig, logging, origin, pageNames, routeCache, viteConfig, viteServer } = opts;
+
+  // Internal maps used to coordinate the HTML and CSS plugins.
+  const internals = createBuildInternals();
+
+  return await vite.build({
+    logLevel: 'error',
+    mode: 'production',
+    build: {
+      emptyOutDir: true,
+      minify: 'esbuild', // significantly faster than "terser" but may produce slightly-bigger bundles
+      outDir: fileURLToPath(astroConfig.dist),
+      rollupOptions: {
+        // The `input` will be populated in the build rollup plugin.
+        input: [],
+        output: {
+          format: 'esm',
+        },
+      },
+      target: 'es2020', // must match an esbuild target
+    },
+    plugins: [
+      rollupPluginAstroBuildHTML({
+        astroConfig,
+        internals,
+        logging,
+        origin,
+        allPages,
+        pageNames,
+        routeCache,
+        viteServer,
+      }),
+      rollupPluginAstroBuildCSS({
+        internals,
+      }),
+      ...(viteConfig.plugins || []),
+    ],
+    publicDir: viteConfig.publicDir,
+    root: viteConfig.root,
+    envPrefix: 'PUBLIC_',
+    server: viteConfig.server,
+    base: astroConfig.buildOptions.site ? new URL(astroConfig.buildOptions.site).pathname : '/',
+  });
+}

packages/astro/src/core/build/static-build.ts

@@ -0,0 +1,238 @@
+import type { OutputChunk, PreRenderedChunk, RollupOutput } from 'rollup';
+import type { Plugin as VitePlugin } from '../vite';
+import type { AstroConfig, RouteCache, SSRElement } from '../../@types/astro';
+import type { AllPagesData } from './types';
+import type { LogOptions } from '../logger';
+import type { ViteConfigWithSSR } from '../create-vite';
+import type { PageBuildData } from './types';
+import type { BuildInternals } from '../../core/build/internal.js';
+import type { AstroComponentFactory } from '../../runtime/server';
+
+import fs from 'fs';
+import { fileURLToPath } from 'url';
+import vite from '../vite.js';
+import { debug, info, error } from '../../core/logger.js';
+import { createBuildInternals } from '../../core/build/internal.js';
+import { rollupPluginAstroBuildCSS } from '../../vite-plugin-build-css/index.js';
+import { getParamsAndProps } from '../ssr/index.js';
+import { createResult } from '../ssr/result.js';
+import { renderPage } from '../../runtime/server/index.js';
+
+export interface StaticBuildOptions {
+  allPages: AllPagesData;
+  astroConfig: AstroConfig;
+  logging: LogOptions;
+  origin: string;
+  routeCache: RouteCache;
+  viteConfig: ViteConfigWithSSR;
+}
+
+export async function staticBuild(opts: StaticBuildOptions) {
+  const { allPages, astroConfig } = opts;
+
+  // The JavaScript entrypoints.
+  const jsInput: Set<string> = new Set();
+
+  // A map of each page .astro file, to the PageBuildData which contains information
+  // about that page, such as its paths.
+  const facadeIdToPageDataMap = new Map<string, PageBuildData>();
+
+  for (const [component, pageData] of Object.entries(allPages)) {
+    const [renderers, mod] = pageData.preload;
+
+    const topLevelImports = new Set([
+      // Any component that gets hydrated
+      ...mod.$$metadata.hydratedComponentPaths(),
+      // Any hydration directive like astro/client/idle.js
+      ...mod.$$metadata.hydrationDirectiveSpecifiers(),
+      // The client path for each renderer
+      ...renderers.filter(renderer => !!renderer.source).map(renderer => renderer.source!),
+    ]);
+
+    for(const specifier of topLevelImports) {
+      jsInput.add(specifier);
+    }
+
+    let astroModuleId = new URL('./' + component, astroConfig.projectRoot).pathname;
+    jsInput.add(astroModuleId);
+    facadeIdToPageDataMap.set(astroModuleId, pageData);
+  }
+
+  // Build internals needed by the CSS plugin
+  const internals = createBuildInternals();
+
+  // Perform the SSR build
+  const result = (await ssrBuild(opts, internals, jsInput)) as RollupOutput;
+
+  // Generate each of the pages.
+  await generatePages(result, opts, internals, facadeIdToPageDataMap);
+}
+
+async function ssrBuild(opts: StaticBuildOptions, internals: BuildInternals, input: Set<string>) {
+  const { astroConfig, viteConfig } = opts;
+
+  return await vite.build({
+    logLevel: 'error',
+    mode: 'production',
+    build: {
+      emptyOutDir: true,
+      minify: false, // 'esbuild', // significantly faster than "terser" but may produce slightly-bigger bundles
+      outDir: fileURLToPath(astroConfig.dist),
+      ssr: true,
+      rollupOptions: {
+        input: Array.from(input),
+        output: {
+          format: 'esm',
+        },
+      },
+      target: 'es2020', // must match an esbuild target
+    },
+    plugins: [
+      vitePluginNewBuild(input, internals),
+      rollupPluginAstroBuildCSS({
+        internals,
+      }),
+      ...(viteConfig.plugins || []),
+    ],
+    publicDir: viteConfig.publicDir,
+    root: viteConfig.root,
+    envPrefix: 'PUBLIC_',
+    server: viteConfig.server,
+    base: astroConfig.buildOptions.site ? new URL(astroConfig.buildOptions.site).pathname : '/',
+  });
+}
+
+async function generatePages(result: RollupOutput, opts: StaticBuildOptions, internals: BuildInternals, facadeIdToPageDataMap: Map<string, PageBuildData>) {
+  debug(opts.logging, 'generate', 'End build step, now generating');
+  const generationPromises = [];
+  for (let output of result.output) {
+    if (output.type === 'chunk' && output.facadeModuleId && output.facadeModuleId.endsWith('.astro')) {
+      generationPromises.push(generatePage(output, opts, internals, facadeIdToPageDataMap));
+    }
+  }
+  await Promise.all(generationPromises);
+}
+
+async function generatePage(output: OutputChunk, opts: StaticBuildOptions, internals: BuildInternals, facadeIdToPageDataMap: Map<string, PageBuildData>) {
+  const { astroConfig } = opts;
+
+  let url = new URL('./' + output.fileName, astroConfig.dist);
+  const facadeId: string = output.facadeModuleId as string;
+  let pageData = facadeIdToPageDataMap.get(facadeId)!;
+  let linkIds = internals.facadeIdToAssetsMap.get(facadeId) || [];
+  let compiledModule = await import(url.toString());
+  let Component = compiledModule.default;
+
+  const generationOptions: Readonly<GeneratePathOptions> = {
+    pageData,
+    internals,
+    linkIds,
+    Component,
+  };
+
+  const renderPromises = pageData.paths.map((path) => {
+    return generatePath(path, opts, generationOptions);
+  });
+  return await Promise.all(renderPromises);
+}
+
+interface GeneratePathOptions {
+  pageData: PageBuildData;
+  internals: BuildInternals;
+  linkIds: string[];
+  Component: AstroComponentFactory;
+}
+
+async function generatePath(pathname: string, opts: StaticBuildOptions, gopts: GeneratePathOptions) {
+  const { astroConfig, logging, origin, routeCache } = opts;
+  const { Component, internals, linkIds, pageData } = gopts;
+
+  const [renderers, mod] = pageData.preload;
+
+  try {
+    const [params, pageProps] = await getParamsAndProps({
+      route: pageData.route,
+      routeCache,
+      logging,
+      pathname,
+      mod,
+    });
+
+    info(logging, 'generate', `Generating: ${pathname}`);
+
+    const result = createResult({ astroConfig, origin, params, pathname, renderers });
+    result.links = new Set<SSRElement>(
+      linkIds.map((href) => ({
+        props: {
+          rel: 'stylesheet',
+          href,
+        },
+        children: '',
+      }))
+    );
+    result.resolve = async (specifier: string) => {
+      const hashedFilePath = internals.entrySpecifierToBundleMap.get(specifier);
+      if(typeof hashedFilePath !== 'string') {
+        throw new Error(`Cannot find the built path for ${specifier}`);
+      }
+      console.log("WE GOT", hashedFilePath)
+      return hashedFilePath;
+    };
+  
+    let html = await renderPage(result, Component, pageProps, null);
+    const outFolder = new URL('.' + pathname + '/', astroConfig.dist);
+    const outFile = new URL('./index.html', outFolder);
+    await fs.promises.mkdir(outFolder, { recursive: true });
+    await fs.promises.writeFile(outFile, html, 'utf-8');
+  } catch (err) {
+    error(opts.logging, 'build', `Error rendering:`, err);
+  }
+}
+
+export function vitePluginNewBuild(input: Set<string>, internals: BuildInternals): VitePlugin {
+  return {
+    name: '@astro/rollup-plugin-new-build',
+
+    configResolved(resolvedConfig) {
+      // Delete this hook because it causes assets not to be built
+      const plugins = resolvedConfig.plugins as VitePlugin[];
+      const viteAsset = plugins.find((p) => p.name === 'vite:asset');
+      if (viteAsset) {
+        delete viteAsset.generateBundle;
+      }
+    },
+
+    outputOptions(outputOptions) {
+      Object.assign(outputOptions, {
+        entryFileNames(_chunk: PreRenderedChunk) {
+          return 'assets/[name].[hash].mjs';
+        },
+        chunkFileNames(_chunk: PreRenderedChunk) {
+          return 'assets/[name].[hash].mjs';
+        },
+      });
+      return outputOptions;
+    },
+
+    async generateBundle(_options, bundle) {
+      const promises = [];
+      const mapping = new Map<string, string>();
+      for(const specifier of input) {
+        promises.push(this.resolve(specifier).then(result => {
+          if(result) {
+            mapping.set(result.id, specifier);
+          }
+        }));
+      }
+      await Promise.all(promises);
+      for(const [, chunk] of Object.entries(bundle)) {
+        if(chunk.type === 'chunk' && chunk.facadeModuleId &&  mapping.has(chunk.facadeModuleId)) {
+          const specifier = mapping.get(chunk.facadeModuleId)!;
+          internals.entrySpecifierToBundleMap.set(specifier, chunk.fileName);
+        }
+      }
+
+      console.log(internals.entrySpecifierToBundleMap);
+    }
+  };
+}

packages/astro/src/core/config.ts

@@ -58,6 +58,7 @@ export const AstroConfigSchema = z.object({
         .union([z.literal('file'), z.literal('directory')])
         .optional()
         .default('directory'),
+      experimentalStaticBuild: z.boolean().optional().default(false),
     })
     .optional()
     .default({}),

packages/astro/src/core/ssr/index.ts

@@ -2,8 +2,6 @@ import type { BuildResult } from 'esbuild';
 import type vite from '../vite';
 import type {
   AstroConfig,
-  AstroGlobal,
-  AstroGlobalPartial,
   ComponentInstance,
   GetStaticPathsResult,
   Params,
@@ -14,20 +12,21 @@ import type {
   RuntimeMode,
   SSRElement,
   SSRError,
-  SSRResult,
 } from '../../@types/astro';
 import type { LogOptions } from '../logger';
+import type { AstroComponentFactory } from '../../runtime/server/index';
 
 import eol from 'eol';
 import fs from 'fs';
 import path from 'path';
 import { fileURLToPath } from 'url';
-import { renderPage, renderSlot } from '../../runtime/server/index.js';
-import { canonicalURL as getCanonicalURL, codeFrame, resolveDependency } from '../util.js';
+import { renderPage } from '../../runtime/server/index.js';
+import { codeFrame, resolveDependency } from '../util.js';
 import { getStylesForURL } from './css.js';
 import { injectTags } from './html.js';
 import { generatePaginateFunction } from './paginate.js';
 import { getParams, validateGetStaticPathsModule, validateGetStaticPathsResult } from './routing.js';
+import { createResult } from './result.js';
 
 const svelteStylesRE = /svelte\?svelte&type=style/;
 
@@ -138,6 +137,78 @@ export async function preload({ astroConfig, filePath, viteServer }: SSROptions)
   return [renderers, mod];
 }
 
+// TODO REMOVE
+export async function renderComponent(
+  renderers: Renderer[],
+  Component: AstroComponentFactory,
+  astroConfig: AstroConfig,
+  pathname: string,
+  origin: string,
+  params: Params,
+  pageProps: Props,
+  links: string[] = []
+): Promise<string> {
+  const result = createResult({ astroConfig, origin, params, pathname, renderers });
+  result.links = new Set<SSRElement>(
+    links.map((href) => ({
+      props: {
+        rel: 'stylesheet',
+        href,
+      },
+      children: '',
+    }))
+  );
+
+  let html = await renderPage(result, Component, pageProps, null);
+
+  return html;
+}
+
+export async function getParamsAndProps({
+  route,
+  routeCache,
+  logging,
+  pathname,
+  mod,
+}: {
+  route: RouteData | undefined;
+  routeCache: RouteCache;
+  pathname: string;
+  mod: ComponentInstance;
+  logging: LogOptions;
+}): Promise<[Params, Props]> {
+  // Handle dynamic routes
+  let params: Params = {};
+  let pageProps: Props = {};
+  if (route && !route.pathname) {
+    if (route.params.length) {
+      const paramsMatch = route.pattern.exec(pathname);
+      if (paramsMatch) {
+        params = getParams(route.params)(paramsMatch);
+      }
+    }
+    validateGetStaticPathsModule(mod);
+    if (!routeCache[route.component]) {
+      routeCache[route.component] = await (
+        await mod.getStaticPaths!({
+          paginate: generatePaginateFunction(route),
+          rss: () => {
+            /* noop */
+          },
+        })
+      ).flat();
+    }
+    validateGetStaticPathsResult(routeCache[route.component], logging);
+    const routePathParams: GetStaticPathsResult = routeCache[route.component];
+    const matchedStaticPath = routePathParams.find(({ params: _params }) => JSON.stringify(_params) === JSON.stringify(params));
+    if (!matchedStaticPath) {
+      throw new Error(`[getStaticPaths] route pattern matched, but no matching static path found. (${pathname})`);
+    }
+    pageProps = { ...matchedStaticPath.props } || {};
+  }
+  return [params, pageProps];
+}
+
 /** use Vite to SSR */
 export async function render(renderers: Renderer[], mod: ComponentInstance, ssrOpts: SSROptions): Promise<string> {
   const { astroConfig, filePath, logging, mode, origin, pathname, route, routeCache, viteServer } = ssrOpts;
@@ -177,55 +248,10 @@ export async function render(renderers: Renderer[], mod: ComponentInstance, ssrO
   if (!Component) throw new Error(`Expected an exported Astro component but received typeof ${typeof Component}`);
   if (!Component.isAstroComponentFactory) throw new Error(`Unable to SSR non-Astro component (${route?.component})`);
 
-  // Create the result object that will be passed into the render function.
-  // This object starts here as an empty shell (not yet the result) but then
-  // calling the render() function will populate the object with scripts, styles, etc.
-  const result: SSRResult = {
-    styles: new Set<SSRElement>(),
-    scripts: new Set<SSRElement>(),
-    /** This function returns the `Astro` faux-global */
-    createAstro(astroGlobal: AstroGlobalPartial, props: Record<string, any>, slots: Record<string, any> | null) {
-      const site = new URL(origin);
-      const url = new URL('.' + pathname, site);
-      const canonicalURL = getCanonicalURL('.' + pathname, astroConfig.buildOptions.site || origin);
-      return {
-        __proto__: astroGlobal,
-        props,
-        request: {
-          canonicalURL,
-          params,
-          url,
-        },
-        slots: Object.fromEntries(Object.entries(slots || {}).map(([slotName]) => [slotName, true])),
-        // This is used for <Markdown> but shouldn't be used publicly
-        privateRenderSlotDoNotUse(slotName: string) {
-          return renderSlot(result, slots ? slots[slotName] : null);
-        },
-        // <Markdown> also needs the same `astroConfig.markdownOptions.render` as `.md` pages
-        async privateRenderMarkdownDoNotUse(content: string, opts: any) {
-          let mdRender = astroConfig.markdownOptions.render;
-          let renderOpts = {};
-          if (Array.isArray(mdRender)) {
-            renderOpts = mdRender[1];
-            mdRender = mdRender[0];
-          }
-          // ['rehype-toc', opts]
-          if (typeof mdRender === 'string') {
-            ({ default: mdRender } = await import(mdRender));
-          }
-          // [import('rehype-toc'), opts]
-          else if (mdRender instanceof Promise) {
-            ({ default: mdRender } = await mdRender);
-          }
-          const { code } = await mdRender(content, { ...renderOpts, ...(opts ?? {}) });
-          return code;
-        },
-      } as unknown as AstroGlobal;
-    },
-    _metadata: {
-      renderers,
-      pathname,
-    },
+  const result = createResult({ astroConfig, origin, params, pathname, renderers });
+  result.resolve = async (s: string) => {
+    const [, path] = await viteServer.moduleGraph.resolveUrl(s);
+    return path;
   };
 
   let html = await renderPage(result, Component, pageProps, null);
@@ -272,7 +298,8 @@ export async function render(renderers: Renderer[], mod: ComponentInstance, ssrO
   // run transformIndexHtml() in dev to run Vite dev transformations
   if (mode === 'development') {
     const relativeURL = filePath.href.replace(astroConfig.projectRoot.href, '/');
-    html = await viteServer.transformIndexHtml(relativeURL, html, pathname);
+    console.log("TRANFORM", relativeURL, html);
+    //html = await viteServer.transformIndexHtml(relativeURL, html, pathname);
   }
 
   // inject <!doctype html> if missing (TODO: is a more robust check needed for comments, etc.?)

packages/astro/src/core/ssr/result.ts

@@ -0,0 +1,83 @@
+import type {
+  AstroConfig,
+  AstroGlobal,
+  AstroGlobalPartial,
+  Params,
+  Renderer,
+  SSRElement,
+  SSRResult,
+} from '../../@types/astro';
+
+import { canonicalURL as getCanonicalURL } from '../util.js';
+import { renderSlot } from '../../runtime/server/index.js';
+
+export interface CreateResultArgs {
+  astroConfig: AstroConfig;
+  origin: string;
+  params: Params;
+  pathname: string;
+  renderers: Renderer[];
+}
+
+export function createResult(args: CreateResultArgs): SSRResult {
+  const { astroConfig, origin, params, pathname, renderers } = args;
+
+  // Create the result object that will be passed into the render function.
+  // This object starts here as an empty shell (not yet the result) but then
+  // calling the render() function will populate the object with scripts, styles, etc.
+  const result: SSRResult = {
+    styles: new Set<SSRElement>(),
+    scripts: new Set<SSRElement>(),
+    links: new Set<SSRElement>(),
+    /** This function returns the `Astro` faux-global */
+    createAstro(astroGlobal: AstroGlobalPartial, props: Record<string, any>, slots: Record<string, any> | null) {
+      const site = new URL(origin);
+      const url = new URL('.' + pathname, site);
+      const canonicalURL = getCanonicalURL('.' + pathname, astroConfig.buildOptions.site || origin);
+      return {
+        __proto__: astroGlobal,
+        props,
+        request: {
+          canonicalURL,
+          params,
+          url,
+        },
+        slots: Object.fromEntries(Object.entries(slots || {}).map(([slotName]) => [slotName, true])),
+        // This is used for <Markdown> but shouldn't be used publicly
+        privateRenderSlotDoNotUse(slotName: string) {
+          return renderSlot(result, slots ? slots[slotName] : null);
+        },
+        // <Markdown> also needs the same `astroConfig.markdownOptions.render` as `.md` pages
+        async privateRenderMarkdownDoNotUse(content: string, opts: any) {
+          let mdRender = astroConfig.markdownOptions.render;
+          let renderOpts = {};
+          if (Array.isArray(mdRender)) {
+            renderOpts = mdRender[1];
+            mdRender = mdRender[0];
+          }
+          // ['rehype-toc', opts]
+          if (typeof mdRender === 'string') {
+            ({ default: mdRender } = await import(mdRender));
+          }
+          // [import('rehype-toc'), opts]
+          else if (mdRender instanceof Promise) {
+            ({ default: mdRender } = await mdRender);
+          }
+          const { code } = await mdRender(content, { ...renderOpts, ...(opts ?? {}) });
+          return code;
+        },
+      } as unknown as AstroGlobal;
+    },
+    // This is a stub and will be implemented by dev and build.
+    async resolve(s: string): Promise<string> {
+      return '';
+    },
+    _metadata: {
+      renderers,
+      pathname,
+      experimentalStaticBuild: astroConfig.buildOptions.experimentalStaticBuild,
+    },
+  };
+
+  return result;
+}

packages/astro/src/runtime/server/hydration.ts

@@ -1,8 +1,8 @@
 import type { AstroComponentMetadata } from '../../@types/astro';
-import type { SSRElement } from '../../@types/astro';
+import type { SSRElement, SSRResult } from '../../@types/astro';
 import { valueToEstree } from 'estree-util-value-to-estree';
 import * as astring from 'astring';
-import { serializeListValue } from './util.js';
+import { hydrationSpecifier, serializeListValue } from './util.js';
 
 const { generate, GENERATOR } = astring;
 
@@ -69,6 +69,9 @@ export function extractDirectives(inputProps: Record<string | number, any>): Ext
           extracted.hydration.componentExport.value = value;
           break;
         }
+        case 'client:component-hydration': {
+          break;
+        }
         default: {
           extracted.hydration.directive = key.split(':')[1];
           extracted.hydration.value = value;
@@ -98,13 +101,14 @@ export function extractDirectives(inputProps: Record<string | number, any>): Ext
 
 interface HydrateScriptOptions {
   renderer: any;
+  result: SSRResult;
   astroId: string;
   props: Record<string | number, any>;
 }
 
 /** For hydrated components, generate a <script type="module"> to load the component */
 export async function generateHydrateScript(scriptOptions: HydrateScriptOptions, metadata: Required<AstroComponentMetadata>): Promise<SSRElement> {
-  const { renderer, astroId, props } = scriptOptions;
+  const { renderer, result, astroId, props } = scriptOptions;
   const { hydrate, componentUrl, componentExport } = metadata;
 
   if (!componentExport) {
@@ -117,16 +121,17 @@ export async function generateHydrateScript(scriptOptions: HydrateScriptOptions,
   }
 
   hydrationSource += renderer.source
-    ? `const [{ ${componentExport.value}: Component }, { default: hydrate }] = await Promise.all([import("${componentUrl}"), import("${renderer.source}")]);
+    ? `const [{ ${componentExport.value}: Component }, { default: hydrate }] = await Promise.all([import("${componentUrl}"), import("${await result.resolve(renderer.source)}")]);
   return (el, children) => hydrate(el)(Component, ${serializeProps(props)}, children);
 `
     : `await import("${componentUrl}");
   return () => {};
 `;
 
+
   const hydrationScript = {
     props: { type: 'module', 'data-astro-component-hydration': true },
-    children: `import setup from 'astro/client/${hydrate}.js';
+    children: `import setup from '${await result.resolve(hydrationSpecifier(hydrate))}';
 setup("${astroId}", {${metadata.hydrateArgs ? `value: ${JSON.stringify(metadata.hydrateArgs)}` : ''}}, async () => {
   ${hydrationSource}
 });

packages/astro/src/runtime/server/index.ts

@@ -249,7 +249,7 @@ If you're still stuck, please open an issue on GitHub or join us at https://astr
 
   // Rather than appending this inline in the page, puts this into the `result.scripts` set that will be appended to the head.
   // INVESTIGATE: This will likely be a problem in streaming because the `<head>` will be gone at this point.
-  result.scripts.add(await generateHydrateScript({ renderer, astroId, props }, metadata as Required<AstroComponentMetadata>));
+  result.scripts.add(await generateHydrateScript({ renderer, result, astroId, props }, metadata as Required<AstroComponentMetadata>));
 
   return `<astro-root uid="${astroId}">${html ?? ''}</astro-root>`;
 }
@@ -372,14 +372,16 @@ const uniqueElements = (item: any, index: number, all: any[]) => {
 // styles and scripts into the head.
 export async function renderPage(result: SSRResult, Component: AstroComponentFactory, props: any, children: any) {
   const template = await renderToString(result, Component, props, children);
-  const styles = Array.from(result.styles)
-    .filter(uniqueElements)
-    .map((style) =>
-      renderElement('style', {
-        ...style,
-        props: { ...style.props, 'astro-style': true },
-      })
-    );
+  const styles = result._metadata.experimentalStaticBuild
+    ? []
+    : Array.from(result.styles)
+        .filter(uniqueElements)
+        .map((style) =>
+          renderElement('style', {
+            ...style,
+            props: { ...style.props, 'astro-style': true },
+          })
+        );
   let needsHydrationStyles = false;
   const scripts = Array.from(result.scripts)
     .filter(uniqueElements)
@@ -396,12 +398,16 @@ export async function renderPage(result: SSRResult, Component: AstroComponentFac
     styles.push(renderElement('style', { props: { 'astro-style': true }, children: 'astro-root, astro-fragment { display: contents; }' }));
   }
 
+  const links = Array.from(result.links)
+    .filter(uniqueElements)
+    .map((link) => renderElement('link', link));
+
   // inject styles & scripts at end of <head>
   let headPos = template.indexOf('</head>');
   if (headPos === -1) {
-    return styles.join('\n') + scripts.join('\n') + template; // if no </head>, prepend styles & scripts
+    return links.join('\n') + styles.join('\n') + scripts.join('\n') + template; // if no </head>, prepend styles & scripts
   }
-  return template.substring(0, headPos) + styles.join('\n') + scripts.join('\n') + template.substring(headPos);
+  return template.substring(0, headPos) + links.join('\n') + styles.join('\n') + scripts.join('\n') + template.substring(headPos);
 }
 
 export async function renderAstroComponent(component: InstanceType<typeof AstroComponent>) {

packages/astro/src/runtime/server/metadata.ts

@@ -1,3 +1,5 @@
+import { hydrationSpecifier } from './util.js';
+
 interface ModuleInfo {
   module: Record<string, any>;
   specifier: string;
@@ -8,10 +10,27 @@ interface ComponentMetadata {
   componentUrl: string;
 }
 
+interface CreateMetadataOptions {
+  modules: ModuleInfo[];
+  hydratedComponents: any[];
+  hydrationDirectives: Set<string>;
+  hoisted: any[];
+}
+
 export class Metadata {
   public fileURL: URL;
+  public modules: ModuleInfo[];
+  public hoisted: any[];
+  public hydratedComponents: any[];
+  public hydrationDirectives: Set<string>;
+
   private metadataCache: Map<any, ComponentMetadata | null>;
-  constructor(fileURL: string, public modules: ModuleInfo[], public hydratedComponents: any[], public hoisted: any[]) {
+
+  constructor(fileURL: string, opts: CreateMetadataOptions) {
+    this.modules = opts.modules;
+    this.hoisted = opts.hoisted;
+    this.hydratedComponents = opts.hydratedComponents;
+    this.hydrationDirectives = opts.hydrationDirectives;
     this.fileURL = new URL(fileURL);
     this.metadataCache = new Map<any, ComponentMetadata | null>();
   }
@@ -30,24 +49,50 @@ export class Metadata {
     return metadata?.componentExport || null;
   }
 
-  // Recursively collect all of the hydrated components' paths.
-  getAllHydratedComponentPaths(): Set<string> {
-    const paths = new Set<string>();
-    for (const component of this.hydratedComponents) {
-      const path = this.getPath(component);
-      if (path) {
-        paths.add(path);
-      }
-    }
-
-    for (const { module: mod } of this.modules) {
-      if (typeof mod.$$metadata !== 'undefined') {
-        for (const path of mod.$$metadata.getAllHydratedComponentPaths()) {
-          paths.add(path);
+  /**
+   * Gets the paths of all hydrated components within this component
+   * and children components.
+   */
+  *hydratedComponentPaths() {
+    const found = new Set<string>();
+    for(const metadata of this.deepMetadata()) {
+      for (const component of metadata.hydratedComponents) {
+        const path = this.getPath(component);
+        if(path && !found.has(path)) {
+          found.add(path);
+          yield path;
+        }
+      }
+    }
+  }
+
+  /**
+   * Gets all of the hydration specifiers used within this component.
+   */
+  *hydrationDirectiveSpecifiers() {
+    for(const directive of this.hydrationDirectives) {
+      yield hydrationSpecifier(directive);
+    }
+  }
+
+  private *deepMetadata(): Generator<Metadata, void, unknown> {
+    // Yield self
+    yield this;
+    // Keep a Set of metadata objects so we only yield them out once.
+    const seen = new Set<Metadata>();
+    for (const { module: mod } of this.modules) {
+      if (typeof mod.$$metadata !== 'undefined') {
+        const md = mod.$$metadata as Metadata;
+        // Call children deepMetadata() which will yield the child metadata
+        // and any of its children metadatas
+        for(const childMetdata of md.deepMetadata()) {
+          if(!seen.has(childMetdata)) {
+            seen.add(childMetdata);
+            yield childMetdata;
+          }
         }
       }
     }
-    return paths;
   }
 
   private getComponentMetadata(Component: any): ComponentMetadata | null {
@@ -83,12 +128,6 @@ export class Metadata {
   }
 }
 
-interface CreateMetadataOptions {
-  modules: ModuleInfo[];
-  hydratedComponents: any[];
-  hoisted: any[];
-}
-
 export function createMetadata(fileURL: string, options: CreateMetadataOptions) {
-  return new Metadata(fileURL, options.modules, options.hydratedComponents, options.hoisted);
+  return new Metadata(fileURL, options);
 }

packages/astro/src/runtime/server/util.ts

@@ -1,3 +1,10 @@
+function formatList(values: string[]): string {
+  if (values.length === 1) {
+    return values[0];
+  }
+  return `${values.slice(0, -1).join(', ')} or ${values[values.length - 1]}`;
+}
+
 export function serializeListValue(value: any) {
   const hash: Record<string, any> = {};
 
@@ -27,3 +34,12 @@ export function serializeListValue(value: any) {
     }
   }
 }
+
+/**
+ * Get the import specifier for a given hydration directive.
+ * @param hydrate The hydration directive such as `idle` or `visible`
+ * @returns 
+ */
+export function hydrationSpecifier(hydrate: string) {
+  return `astro/client/${hydrate}.js`;
+}

packages/astro/src/vite-plugin-astro/compile.ts

@@ -0,0 +1,108 @@
+import type { AstroConfig } from '../@types/astro';
+import type { TransformResult } from '@astrojs/compiler';
+import type { SourceMapInput } from 'rollup';
+import type { TransformHook } from './styles';
+
+import fs from 'fs';
+import { fileURLToPath } from 'url';
+import { transform } from '@astrojs/compiler';
+import { transformWithVite } from './styles.js';
+
+type CompilationCache = Map<string, TransformResult>;
+
+const configCache = new WeakMap<AstroConfig, CompilationCache>();
+
+// https://github.com/vitejs/vite/discussions/5109#discussioncomment-1450726
+function isSSR(options: undefined | boolean | { ssr: boolean }): boolean {
+  if (options === undefined) {
+    return false;
+  }
+  if (typeof options === 'boolean') {
+    return options;
+  }
+  if (typeof options == 'object') {
+    return !!options.ssr;
+  }
+  return false;
+}
+
+async function compile(config: AstroConfig, filename: string, source: string, viteTransform: TransformHook, opts: boolean | undefined) {
+  // pages and layouts should be transformed as full documents (implicit <head> <body> etc)
+  // everything else is treated as a fragment
+  const normalizedID = fileURLToPath(new URL(`file://${filename}`));
+  const isPage = normalizedID.startsWith(fileURLToPath(config.pages)) || normalizedID.startsWith(fileURLToPath(config.layouts));
+  //let source = await fs.promises.readFile(id, 'utf8');
+  let cssTransformError: Error | undefined;
+
+  // Transform from `.astro` to valid `.ts`
+  // use `sourcemap: "both"` so that sourcemap is included in the code
+  // result passed to esbuild, but also available in the catch handler.
+  const transformResult = await transform(source, {
+    as: isPage ? 'document' : 'fragment',
+    projectRoot: config.projectRoot.toString(),
+    site: config.buildOptions.site,
+    sourcefile: filename,
+    sourcemap: 'both',
+    internalURL: 'astro/internal',
+    experimentalStaticExtraction: config.buildOptions.experimentalStaticBuild,
+    // TODO add experimental flag here
+    preprocessStyle: async (value: string, attrs: Record<string, string>) => {
+      const lang = `.${attrs?.lang || 'css'}`.toLowerCase();
+      try {
+        const result = await transformWithVite({
+          value,
+          lang,
+          id: filename,
+          transformHook: viteTransform,
+          ssr: isSSR(opts),
+        });
+
+        let map: SourceMapInput | undefined;
+        if (!result) return null as any; // TODO: add type in compiler to fix "any"
+        if (result.map) {
+          if (typeof result.map === 'string') {
+            map = result.map;
+          } else if (result.map.mappings) {
+            map = result.map.toString();
+          }
+        }
+        return { code: result.code, map };
+      } catch (err) {
+        // save error to throw in plugin context
+        cssTransformError = err as any;
+        return null;
+      }
+    },
+  });
+
+  // throw CSS transform errors here if encountered
+  if (cssTransformError) throw cssTransformError;
+
+  return transformResult;
+}
+
+export function invalidateCompilation(config: AstroConfig, filename: string) {
+  if (configCache.has(config)) {
+    const cache = configCache.get(config)!;
+    cache.delete(filename);
+  }
+}
+
+export async function cachedCompilation(config: AstroConfig, filename: string, source: string | null, viteTransform: TransformHook, opts: boolean | undefined) {
+  let cache: CompilationCache;
+  if (!configCache.has(config)) {
+    cache = new Map();
+    configCache.set(config, cache);
+  } else {
+    cache = configCache.get(config)!;
+  }
+  if (cache.has(filename)) {
+    return cache.get(filename)!;
+  }
+  if (source === null) {
+    throw new Error(`Oh no, this should have been cached.`);
+  }
+  const transformResult = await compile(config, filename, source, viteTransform, opts);
+  cache.set(filename, transformResult);
+  return transformResult;
+}

packages/astro/src/vite-plugin-astro/index.ts

@@ -1,14 +1,12 @@
-import type { TransformResult } from '@astrojs/compiler';
-import type { SourceMapInput } from 'rollup';
 import type vite from '../core/vite';
 import type { AstroConfig } from '../@types/astro';
 
 import esbuild from 'esbuild';
-import fs from 'fs';
 import { fileURLToPath } from 'url';
-import { transform } from '@astrojs/compiler';
 import { AstroDevServer } from '../core/dev/index.js';
-import { getViteTransform, TransformHook, transformWithVite } from './styles.js';
+import { getViteTransform, TransformHook } from './styles.js';
+import { parseAstroRequest } from './query.js';
+import { cachedCompilation, invalidateCompilation } from './compile.js';
 
 const FRONTMATTER_PARSE_REGEXP = /^\-\-\-(.*)^\-\-\-/ms;
 interface AstroPluginOptions {
@@ -16,22 +14,8 @@ interface AstroPluginOptions {
   devServer?: AstroDevServer;
 }
 
-// https://github.com/vitejs/vite/discussions/5109#discussioncomment-1450726
-function isSSR(options: undefined | boolean | { ssr: boolean }): boolean {
-  if (options === undefined) {
-    return false;
-  }
-  if (typeof options === 'boolean') {
-    return options;
-  }
-  if (typeof options == 'object') {
-    return !!options.ssr;
-  }
-  return false;
-}
-
 /** Transform .astro files for Vite */
-export default function astro({ config, devServer }: AstroPluginOptions): vite.Plugin {
+export default function astro({ config }: AstroPluginOptions): vite.Plugin {
   let viteTransform: TransformHook;
   return {
     name: '@astrojs/vite-plugin-astro',
@@ -40,57 +24,51 @@ export default function astro({ config, devServer }: AstroPluginOptions): vite.P
       viteTransform = getViteTransform(resolvedConfig);
     },
     // note: don’t claim .astro files with resolveId() — it prevents Vite from transpiling the final JS (import.meta.globEager, etc.)
-    async load(id, opts) {
-      if (!id.endsWith('.astro')) {
-        return null;
+    async resolveId(id) {
+      // serve sub-part requests (*?astro) as virtual modules
+      if (parseAstroRequest(id).query.astro) {
+        return id;
+      }
+    },
+    async load(id, opts) {
+      let { filename, query } = parseAstroRequest(id);
+      if (query.astro) {
+        if (query.type === 'style') {
+          if (filename.startsWith('/') && !filename.startsWith(config.projectRoot.pathname)) {
+            filename = new URL('.' + filename, config.projectRoot).pathname;
+          }
+          const transformResult = await cachedCompilation(config, filename, null, viteTransform, opts);
+
+          if (typeof query.index === 'undefined') {
+            throw new Error(`Requests for Astro CSS must include an index.`);
+          }
+
+          const csses = transformResult.css;
+          const code = csses[query.index];
+
+          return {
+            code,
+          };
+        }
+      }
+
+      return null;
+    },
+    async transform(source, id, opts) {
+      if (!id.endsWith('.astro')) {
+        return;
       }
-      // pages and layouts should be transformed as full documents (implicit <head> <body> etc)
-      // everything else is treated as a fragment
-      const normalizedID = fileURLToPath(new URL(`file://${id}`));
-      const isPage = normalizedID.startsWith(fileURLToPath(config.pages)) || normalizedID.startsWith(fileURLToPath(config.layouts));
-      let source = await fs.promises.readFile(id, 'utf8');
-      let tsResult: TransformResult | undefined;
-      let cssTransformError: Error | undefined;
 
       try {
-        // Transform from `.astro` to valid `.ts`
-        // use `sourcemap: "both"` so that sourcemap is included in the code
-        // result passed to esbuild, but also available in the catch handler.
-        tsResult = await transform(source, {
-          as: isPage ? 'document' : 'fragment',
-          projectRoot: config.projectRoot.toString(),
-          site: config.buildOptions.site,
-          sourcefile: id,
-          sourcemap: 'both',
-          internalURL: 'astro/internal',
-          preprocessStyle: async (value: string, attrs: Record<string, string>) => {
-            const lang = `.${attrs?.lang || 'css'}`.toLowerCase();
-            try {
-              const result = await transformWithVite({ value, lang, id, transformHook: viteTransform, ssr: isSSR(opts) });
-              let map: SourceMapInput | undefined;
-              if (!result) return null as any; // TODO: add type in compiler to fix "any"
-              if (result.map) {
-                if (typeof result.map === 'string') {
-                  map = result.map;
-                } else if (result.map.mappings) {
-                  map = result.map.toString();
-                }
-              }
-              return { code: result.code, map };
-            } catch (err) {
-              // save error to throw in plugin context
-              cssTransformError = err as any;
-              return null;
-            }
-          },
-        });
-
-        // throw CSS transform errors here if encountered
-        if (cssTransformError) throw cssTransformError;
+        const transformResult = await cachedCompilation(config, id, source, viteTransform, opts);
 
         // Compile all TypeScript to JavaScript.
         // Also, catches invalid JS/TS in the compiled output before returning.
-        const { code, map } = await esbuild.transform(tsResult.code, { loader: 'ts', sourcemap: 'external', sourcefile: id });
+        const { code, map } = await esbuild.transform(transformResult.code, {
+          loader: 'ts',
+          sourcemap: 'external',
+          sourcefile: id,
+        });
 
         return {
           code,
@@ -126,20 +104,20 @@ export default function astro({ config, devServer }: AstroPluginOptions): vite.P
             title: '🐛 BUG: `@astrojs/compiler` panic',
             body: `### Describe the Bug
     
-\`@astrojs/compiler\` encountered an unrecoverable error when compiling the following file.
+    \`@astrojs/compiler\` encountered an unrecoverable error when compiling the following file.
     
-**${id.replace(fileURLToPath(config.projectRoot), '')}**
-\`\`\`astro
-${source}
-\`\`\`
-`,
+    **${id.replace(fileURLToPath(config.projectRoot), '')}**
+    \`\`\`astro
+    ${source}
+    \`\`\`
+    `,
           });
           err.url = `https://github.com/withastro/astro/issues/new?${search.toString()}`;
           err.message = `Error: Uh oh, the Astro compiler encountered an unrecoverable error!
     
-Please open
-a GitHub issue using the link below:
-${err.url}`;
+    Please open
+    a GitHub issue using the link below:
+    ${err.url}`;
           // TODO: remove stack replacement when compiler throws better errors
           err.stack = `    at ${id}`;
         }
@@ -147,10 +125,9 @@ ${err.url}`;
         throw err;
       }
     },
-    // async handleHotUpdate(context) {
-    //   if (devServer) {
-    //     return devServer.handleHotUpdate(context);
-    //   }
-    // },
+    async handleHotUpdate(context) {
+      // Invalidate the compilation cache so it recompiles
+      invalidateCompilation(config, context.file);
+    },
   };
 }

packages/astro/src/vite-plugin-astro/query.ts

@@ -0,0 +1,35 @@
+export interface AstroQuery {
+  astro?: boolean;
+  src?: boolean;
+  type?: 'script' | 'template' | 'style' | 'custom';
+  index?: number;
+  lang?: string;
+  raw?: boolean;
+}
+
+// Parses an id to check if its an Astro request.
+// CSS is imported like `import '/src/pages/index.astro?astro&type=style&index=0&lang.css';
+// This parses those ids and returns an object representing what it found.
+export function parseAstroRequest(id: string): {
+  filename: string;
+  query: AstroQuery;
+} {
+  const [filename, rawQuery] = id.split(`?`, 2);
+  const query = Object.fromEntries(new URLSearchParams(rawQuery).entries()) as AstroQuery;
+  if (query.astro != null) {
+    query.astro = true;
+  }
+  if (query.src != null) {
+    query.src = true;
+  }
+  if (query.index != null) {
+    query.index = Number(query.index);
+  }
+  if (query.raw != null) {
+    query.raw = true;
+  }
+  return {
+    filename,
+    query,
+  };
+}

packages/astro/src/vite-plugin-build-css/index.ts

@@ -1,9 +1,10 @@
 import type { RenderedChunk } from 'rollup';
-import { Plugin as VitePlugin } from '../core/vite';
+import type { BuildInternals } from '../core/build/internal';
 
-import { STYLE_EXTENSIONS } from '../core/ssr/css.js';
 import * as path from 'path';
 import esbuild from 'esbuild';
+import { Plugin as VitePlugin } from '../core/vite';
+import { STYLE_EXTENSIONS } from '../core/ssr/css.js';
 
 const PLUGIN_NAME = '@astrojs/rollup-plugin-build-css';
 
@@ -45,14 +46,11 @@ function isPageStyleVirtualModule(id: string) {
 }
 
 interface PluginOptions {
-  astroStyleMap: Map<string, string>;
-  astroPageStyleMap: Map<string, string>;
-  chunkToReferenceIdMap: Map<string, string>;
-  pureCSSChunks: Set<RenderedChunk>;
+  internals: BuildInternals;
 }
 
 export function rollupPluginAstroBuildCSS(options: PluginOptions): VitePlugin {
-  const { astroPageStyleMap, astroStyleMap, chunkToReferenceIdMap, pureCSSChunks } = options;
+  const { internals } = options;
   const styleSourceMap = new Map<string, string>();
 
   return {
@@ -94,10 +92,10 @@ export function rollupPluginAstroBuildCSS(options: PluginOptions): VitePlugin {
 
     async load(id) {
       if (isPageStyleVirtualModule(id)) {
-        return astroPageStyleMap.get(id) || null;
+        return internals.astroPageStyleMap.get(id) || null;
       }
       if (isStyleVirtualModule(id)) {
-        return astroStyleMap.get(id) || null;
+        return internals.astroStyleMap.get(id) || null;
       }
       return null;
     },
@@ -127,17 +125,26 @@ export function rollupPluginAstroBuildCSS(options: PluginOptions): VitePlugin {
       // if (!chunkCSS) return null; // don’t output empty .css files
 
       if (isPureCSS) {
-        const { code: minifiedCSS } = await esbuild.transform(chunkCSS, {
-          loader: 'css',
-          minify: true,
-        });
-        const referenceId = this.emitFile({
-          name: chunk.name + '.css',
-          type: 'asset',
-          source: minifiedCSS,
-        });
-        pureCSSChunks.add(chunk);
-        chunkToReferenceIdMap.set(chunk.fileName, referenceId);
+        internals.pureCSSChunks.add(chunk);
+      }
+
+      const { code: minifiedCSS } = await esbuild.transform(chunkCSS, {
+        loader: 'css',
+        minify: true,
+      });
+      const referenceId = this.emitFile({
+        name: chunk.name + '.css',
+        type: 'asset',
+        source: minifiedCSS,
+      });
+
+      internals.chunkToReferenceIdMap.set(chunk.fileName, referenceId);
+      if (chunk.type === 'chunk') {
+        const facadeId = chunk.facadeModuleId!;
+        if (!internals.facadeIdToAssetsMap.has(facadeId)) {
+          internals.facadeIdToAssetsMap.set(facadeId, []);
+        }
+        internals.facadeIdToAssetsMap.get(facadeId)!.push(this.getFileName(referenceId));
       }
 
       return null;
@@ -145,8 +152,8 @@ export function rollupPluginAstroBuildCSS(options: PluginOptions): VitePlugin {
 
     // Delete CSS chunks so JS is not produced for them.
     generateBundle(opts, bundle) {
-      if (pureCSSChunks.size) {
-        const pureChunkFilenames = new Set([...pureCSSChunks].map((chunk) => chunk.fileName));
+      if (internals.pureCSSChunks.size) {
+        const pureChunkFilenames = new Set([...internals.pureCSSChunks].map((chunk) => chunk.fileName));
         const emptyChunkFiles = [...pureChunkFilenames]
           .map((file) => path.basename(file))
           .join('|')
@@ -155,7 +162,7 @@ export function rollupPluginAstroBuildCSS(options: PluginOptions): VitePlugin {
 
         for (const [chunkId, chunk] of Object.entries(bundle)) {
           if (chunk.type === 'chunk') {
-            if (pureCSSChunks.has(chunk)) {
+            if (internals.pureCSSChunks.has(chunk)) {
               // Delete pure CSS chunks, these are JavaScript chunks that only import
               // other CSS files, so are empty at the end of bundling.
               delete bundle[chunkId];

packages/astro/src/vite-plugin-build-html/index.ts

@@ -1,8 +1,9 @@
 import type { AstroConfig, RouteCache } from '../@types/astro';
 import type { LogOptions } from '../core/logger';
 import type { ViteDevServer, Plugin as VitePlugin } from '../core/vite';
-import type { OutputChunk, PreRenderedChunk, RenderedChunk } from 'rollup';
+import type { OutputChunk, PreRenderedChunk } from 'rollup';
 import type { AllPagesData } from '../core/build/types';
+import type { BuildInternals } from '../core/build/internal';
 import parse5 from 'parse5';
 import srcsetParse from 'srcset-parse';
 import * as npath from 'path';
@@ -26,20 +27,17 @@ const STATUS_CODE_RE = /^404$/;
 
 interface PluginOptions {
   astroConfig: AstroConfig;
-  astroStyleMap: Map<string, string>;
-  astroPageStyleMap: Map<string, string>;
-  chunkToReferenceIdMap: Map<string, string>;
+  internals: BuildInternals;
   logging: LogOptions;
   allPages: AllPagesData;
   pageNames: string[];
-  pureCSSChunks: Set<RenderedChunk>;
   origin: string;
   routeCache: RouteCache;
   viteServer: ViteDevServer;
 }
 
 export function rollupPluginAstroBuildHTML(options: PluginOptions): VitePlugin {
-  const { astroConfig, astroStyleMap, astroPageStyleMap, chunkToReferenceIdMap, pureCSSChunks, logging, origin, allPages, routeCache, viteServer, pageNames } = options;
+  const { astroConfig, internals, logging, origin, allPages, routeCache, viteServer, pageNames } = options;
 
   // The filepath root of the src folder
   const srcRoot = astroConfig.src.pathname;
@@ -161,7 +159,7 @@ export function rollupPluginAstroBuildHTML(options: PluginOptions): VitePlugin {
 
           if (styles) {
             const styleId = getAstroStyleId(pathname);
-            astroStyleMap.set(styleId, styles);
+            internals.astroStyleMap.set(styleId, styles);
             // Put this at the front of imports
             assetImports.unshift(styleId);
           }
@@ -175,7 +173,7 @@ export function rollupPluginAstroBuildHTML(options: PluginOptions): VitePlugin {
           if (assetImports.length) {
             const pageStyleId = getAstroPageStyleId(pathname);
             const jsSource = assetImports.map((sid) => `import '${sid}';`).join('\n');
-            astroPageStyleMap.set(pageStyleId, jsSource);
+            internals.astroPageStyleMap.set(pageStyleId, jsSource);
             assetInput.add(pageStyleId);
 
             // preserve asset order in the order we encounter them
@@ -268,7 +266,7 @@ export function rollupPluginAstroBuildHTML(options: PluginOptions): VitePlugin {
 
       // Sort CSS in order of appearance in HTML (pageStyleImportOrder)
       // This is the “global ordering” used below
-      const sortedCSSChunks = [...pureCSSChunks];
+      const sortedCSSChunks = [...internals.pureCSSChunks];
       sortedCSSChunks.sort((a, b) => {
         let aIndex = Math.min(
           ...Object.keys(a.modules).map((id) => {
@@ -298,7 +296,7 @@ export function rollupPluginAstroBuildHTML(options: PluginOptions): VitePlugin {
 
         const referenceIDs: string[] = [];
         for (const chunkID of chunkModules) {
-          const referenceID = chunkToReferenceIdMap.get(chunkID);
+          const referenceID = internals.chunkToReferenceIdMap.get(chunkID);
           if (referenceID) referenceIDs.push(referenceID);
         }
         for (const id of Object.keys(chunk.modules)) {