Handle compiler breaking change

.changeset/dull-rabbits-relax.md

@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Upgrade compiler and handle breaking changes

.npmrc

@@ -10,7 +10,5 @@ public-hoist-pattern[]=github-slugger
 # Vite's esbuild optimizer has trouble optimizing `@astrojs/lit/client-shim.js`
 # which imports this dependency.
 public-hoist-pattern[]=@webcomponents/template-shadowroot
-# On Windows, `svelte-preprocess` can't import `svelte/compiler`. Might be a pnpm bug.
-public-hoist-pattern[]=svelte
 # There's a lit dependency duplication somewhere causing multiple Lit versions error.
 public-hoist-pattern[]=*lit*

package.json

@@ -66,6 +66,9 @@
         "react",
         "react-dom",
         "@types/react"
+      ],
+      "allowAny": [
+        "astro"
       ]
     },
     "patchedDependencies": {

packages/astro/package.json

@@ -109,7 +109,7 @@
     "test:e2e:match": "playwright test -g"
   },
   "dependencies": {
-    "@astrojs/compiler": "^0.31.4",
+    "@astrojs/compiler": "^0.32.0",
     "@astrojs/language-server": "^0.28.3",
     "@astrojs/markdown-remark": "^2.0.0-beta.1",
     "@astrojs/telemetry": "^1.0.1",

packages/astro/src/core/compile/compile.ts

@@ -3,6 +3,8 @@ import type { ResolvedConfig } from 'vite';
 import type { AstroConfig } from '../../@types/astro';
 
 import { transform } from '@astrojs/compiler';
+import { fileURLToPath } from 'url';
+import { normalizePath } from 'vite';
 import { AggregateError, AstroError, CompilerError } from '../errors/errors.js';
 import { AstroErrorData } from '../errors/index.js';
 import { resolvePath } from '../util.js';
@@ -35,15 +37,11 @@ export async function compile({
 		// use `sourcemap: "both"` so that sourcemap is included in the code
 		// result passed to esbuild, but also available in the catch handler.
 		transformResult = await transform(source, {
-			moduleId: filename,
-			pathname: filename,
-			projectRoot: astroConfig.root.toString(),
-			site: astroConfig.site?.toString(),
-			sourcefile: filename,
+			filename,
+			normalizedFilename: normalizeFilename(filename, astroConfig.root),
 			sourcemap: 'both',
 			internalURL: 'astro/server/index.js',
-			// TODO: baseline flag
-			experimentalStaticExtraction: true,
+			astroGlobalArgs: JSON.stringify(astroConfig.site),
 			preprocessStyle: createStylePreprocessor({
 				filename,
 				viteConfig,
@@ -111,3 +109,13 @@ function handleCompileResultErrors(result: TransformResult, cssTransformErrors:
 		}
 	}
 }
+
+function normalizeFilename(filename: string, root: URL) {
+	const normalizedFilename = normalizePath(filename);
+	const normalizedRoot = normalizePath(fileURLToPath(root));
+	if (normalizedFilename.startsWith(normalizedRoot)) {
+		return normalizedFilename.slice(normalizedRoot.length - 1);
+	} else {
+		return normalizedFilename;
+	}
+}

packages/astro/src/runtime/server/astro-global.ts

@@ -17,13 +17,8 @@ function createAstroGlobFn() {
 }
 
 // This is used to create the top-level Astro global; the one that you can use
-// Inside of getStaticPaths.
-// TODO: remove `_filePathname` and `_projectRootStr` from the compiler
-export function createAstro(
-	_filePathname: string,
-	site: string | undefined,
-	_projectRootStr: string
-): AstroGlobalPartial {
+// inside of getStaticPaths. See the `astroGlobalArgs` option for parameter type.
+export function createAstro(site: string | undefined): AstroGlobalPartial {
 	return {
 		site: site ? new URL(site) : undefined,
 		generator: `Astro v${ASTRO_VERSION}`,

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

@@ -1,7 +1,12 @@
 import { fileURLToPath } from 'node:url';
 import type { HmrContext, ModuleNode } from 'vite';
 import type { AstroConfig } from '../@types/astro';
-import { cachedCompilation, invalidateCompilation, isCached } from '../core/compile/index.js';
+import {
+	cachedCompilation,
+	CompileResult,
+	invalidateCompilation,
+	isCached,
+} from '../core/compile/index.js';
 import type { LogOptions } from '../core/logger/core.js';
 import { info } from '../core/logger/core.js';
 import * as msg from '../core/messages.js';
@@ -17,32 +22,24 @@ export interface HandleHotUpdateOptions {
 	config: AstroConfig;
 	logging: LogOptions;
 	compile: () => ReturnType<typeof cachedCompilation>;
+	source: string;
 }
 
 export async function handleHotUpdate(
 	ctx: HmrContext,
-	{ config, logging, compile }: HandleHotUpdateOptions
+	{ config, logging, compile, source }: HandleHotUpdateOptions
 ) {
 	let isStyleOnlyChange = false;
 	if (ctx.file.endsWith('.astro') && isCached(config, ctx.file)) {
 		// Get the compiled result from the cache
 		const oldResult = await compile();
-		// But we also need a fresh, uncached result to compare it to
+		// Skip HMR if source isn't changed
+		if (oldResult.source === source) return [];
+		// Invalidate to get fresh, uncached result to compare it to
 		invalidateCompilation(config, ctx.file);
 		const newResult = await compile();
-		// If the hashes are identical, we assume only styles have changed
-		if (oldResult.scope === newResult.scope) {
+		if (isStyleOnlyChanged(oldResult, newResult)) {
 			isStyleOnlyChange = true;
-			// All styles are the same, we can skip an HMR update
-			const styles = new Set(newResult.css);
-			for (const style of oldResult.css) {
-				if (styles.has(style)) {
-					styles.delete(style);
-				}
-			}
-			if (styles.size === 0) {
-				return [];
-			}
 		}
 	} else {
 		invalidateCompilation(config, ctx.file);
@@ -134,3 +131,33 @@ export async function handleHotUpdate(
 
 	return mods;
 }
+
+function isStyleOnlyChanged(oldResult: CompileResult, newResult: CompileResult) {
+	return (
+		normalizeCode(oldResult.code) === normalizeCode(newResult.code) &&
+		!isArrayEqual(oldResult.css, newResult.css)
+	);
+}
+
+const astroStyleImportRE = /import\s*"[^"]+astro&type=style[^"]+";/g;
+const sourceMappingUrlRE = /\/\/# sourceMappingURL=[^ ]+$/gm;
+
+/**
+ * Remove style-related code and sourcemap from the final astro output so they
+ * can be compared between non-style code
+ */
+function normalizeCode(code: string) {
+	return code.replace(astroStyleImportRE, '').replace(sourceMappingUrlRE, '').trim();
+}
+
+function isArrayEqual(a: any[], b: any[]) {
+	if (a.length !== b.length) {
+		return false;
+	}
+	for (let i = 0; i < a.length; i++) {
+		if (a[i] !== b[i]) {
+			return false;
+		}
+	}
+	return true;
+}

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

@@ -179,6 +179,7 @@ export default function astro({ settings, logging }: AstroPluginOptions): vite.P
 				config,
 				logging,
 				compile,
+				source: compileProps.source,
 			});
 		},
 	};

packages/astro/test/fixtures/third-party-astro/package.json

@@ -3,7 +3,7 @@
   "version": "0.0.0",
   "private": true,
   "dependencies": {
-    "astro": "^1.0.0",
+    "astro": "workspace:*",
     "astro-embed": "^0.1.1"
   }
 }

packages/astro/test/units/compile/invalid-css.test.js

@@ -2,16 +2,17 @@ import { resolveConfig } from 'vite';
 import { expect } from 'chai';
 import { cachedCompilation } from '../../../dist/core/compile/index.js';
 import { AggregateError } from '../../../dist/core/errors/index.js';
+import { pathToFileURL } from 'url';
 
 describe('astro/src/core/compile', () => {
 	describe('Invalid CSS', () => {
 		it('throws an aggregate error with the errors', async () => {
 			let error;
 			try {
 				let r = await cachedCompilation({
-					astroConfig: /** @type {any} */ ({
-						root: '/',
-					}),
+					astroConfig: {
+						root: pathToFileURL('/'),
+					},
 					viteConfig: await resolveConfig({ configFile: false }, 'serve'),
 					filename: '/src/pages/index.astro',
 					source: `

packages/astro/test/units/vite-plugin-astro/compile.test.js

@@ -2,6 +2,7 @@ import { expect } from 'chai';
 import { resolveConfig } from 'vite';
 import { cachedFullCompilation } from '../../../dist/vite-plugin-astro/compile.js';
 import { init, parse } from 'es-module-lexer';
+import { pathToFileURL } from 'url';
 
 const viteConfig = await resolveConfig({ configFile: false }, 'serve');
 
@@ -12,7 +13,7 @@ const viteConfig = await resolveConfig({ configFile: false }, 'serve');
 async function compile(source, id) {
 	return await cachedFullCompilation({
 		compileProps: {
-			astroConfig: { root: '/', base: '/' },
+			astroConfig: { root: pathToFileURL('/'), base: '/' },
 			viteConfig,
 			filename: id,
 			source,