Fix slashes for paths containing non-ASCII characters on Windows.

.changeset/pink-beans-cross.md

@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Fix slashes for paths containing non-ASCII characters on Windows

packages/astro/src/core/util.ts

@@ -126,7 +126,7 @@ export function resolveDependency(dep: string, projectRoot: URL) {
  *   Windows:    C:/Users/astro/code/my-project/src/pages/index.astro
  */
 export function viteID(filePath: URL): string {
-	return slash(fileURLToPath(filePath) + filePath.search);
+	return slash(fileURLToPath(filePath) + filePath.search).replace(/\\/g, '/');
 }
 
 export const VALID_ID_PREFIX = `/@id/`;

packages/astro/test/fixtures/non-ascii-path/测试/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "@test/non-ascii-path",
+  "version": "0.0.0",
+  "private": true,
+  "dependencies": {
+    "astro": "workspace:*"
+  }
+}

packages/astro/test/fixtures/non-ascii-path/测试/src/pages/index.astro

@@ -0,0 +1 @@
+<h1>测试 OK</h1>

packages/astro/test/non-ascii-path.test.js

@@ -0,0 +1,21 @@
+import { expect } from 'chai';
+import * as cheerio from 'cheerio';
+import { loadFixture } from './test-utils.js';
+
+describe('Non-ASCII Path Test', () => {
+	let fixture;
+
+	before(async () => {
+		fixture = await loadFixture({ root: './fixtures/non-ascii-path/测试/' });
+		await fixture.build();
+	});
+
+	describe('build', () => {
+		it('Can load page', async () => {
+			const html = await fixture.readFile(`/index.html`);
+			const $ = cheerio.load(html);
+
+			expect($('h1').text()).to.equal('测试 OK');
+		});
+	});
+});