withastro · Jun 14, 2024
diff --git a/‎.changeset/honest-ravens-double.md
+5 b/‎.changeset/honest-ravens-double.md
+5
diff --git a/‎packages/astro/src/core/util.ts
+14-2 b/‎packages/astro/src/core/util.ts
+14-2
diff --git a/‎packages/astro/test/fixtures/_underscore in folder name/astro.config.mjs
+8 b/‎packages/astro/test/fixtures/_underscore in folder name/astro.config.mjs
+8
diff --git a/‎packages/astro/test/fixtures/_underscore in folder name/node_modules/fake-astro-library/404.astro
+4 b/‎packages/astro/test/fixtures/_underscore in folder name/node_modules/fake-astro-library/404.astro
+4
diff --git a/‎packages/astro/test/fixtures/_underscore in folder name/node_modules/fake-astro-library/index.ts
+16 b/‎packages/astro/test/fixtures/_underscore in folder name/node_modules/fake-astro-library/index.ts
+16
diff --git a/‎packages/astro/test/fixtures/_underscore in folder name/node_modules/fake-astro-library/package.json
+12 b/‎packages/astro/test/fixtures/_underscore in folder name/node_modules/fake-astro-library/package.json
+12
diff --git a/‎packages/astro/test/fixtures/_underscore in folder name/src/pages/index.astro
+11 b/‎packages/astro/test/fixtures/_underscore in folder name/src/pages/index.astro
+11
diff --git a/‎packages/astro/test/underscore-in-folder-name.test.js
+25 b/‎packages/astro/test/underscore-in-folder-name.test.js
+25
@@ -0,0 +1,5 @@
+---
+"astro": patch
+---
+
+Fixes a prerendering issue for libraries in `node_modules` when a folder with an underscore is in the path.
@@ -120,11 +120,23 @@ function isInjectedRoute(file: URL, settings: AstroSettings) {
 }
 
 function isPublicRoute(file: URL, config: AstroConfig): boolean {
-	const pagesDir = resolvePages(config);
-	const parts = file.toString().replace(pagesDir.toString(), '').split('/').slice(1);
+	const rootDir = config.root.toString();
+	const pagesDir = resolvePages(config).toString();
+	const fileDir = file.toString();
+
+	// Normalize the file directory path by removing the pagesDir prefix if it exists,
+	// otherwise remove the rootDir prefix.
+	const normalizedDir = fileDir.startsWith(pagesDir) ? fileDir.slice(pagesDir.length) : fileDir.slice(rootDir.length);
+
+	const parts = normalizedDir
+		.replace(pagesDir.toString(), '')
+		.split('/')
+		.slice(1);
+
 	for (const part of parts) {
 		if (part.startsWith('_')) return false;
 	}
+
 	return true;
 }
 
 
@@ -0,0 +1,8 @@
+import { defineConfig } from 'astro/config';
+import fakeIntegration from 'fake-astro-library';
+
+export default defineConfig({
+	integrations: [
+		fakeIntegration(),
+	],
+});
@@ -0,0 +1,11 @@
+<html>
+<head>
+	<title>Project with underscore in the folder name</title>
+</head>
+<body>
+<h1>Testing</h1>
+<script>
+	console.log('hi');
+</script>
+</body>
+</html>
@@ -0,0 +1,25 @@
+import assert from 'node:assert/strict';
+import { before, describe, it } from 'node:test';
+import { loadFixture } from './test-utils.js';
+import testAdapter from './test-adapter.js';
+
+describe('Projects with a underscore in the folder name', () => {
+	let fixture;
+
+	before(async () => {
+		fixture = await loadFixture({
+			root: './fixtures/_underscore in folder name/',
+			output: 'hybrid',
+			adapter: testAdapter(),
+		});
+		await fixture.build();
+	});
+
+	it('includes page from node_modules/fake-astro-library', async () => {
+		const app = await fixture.loadTestAdapterApp();
+		/** @type {Set<string>} */
+		const assets = app.manifest.assets;
+		assert.equal(assets.has('/index.html'), true);
+		assert.equal(assets.has('/404.html'), true);
+	});
+});