chore: move tests to node (#10123)

* chore: move tests to node

* fix

18 files changed, 265 insertions, 236 deletions

diff --git a/packages/astro/test/page-format.test.js b/packages/astro/test/page-format.nodetest.js
index 7fd68a617..7f579dae8 100644
--- a/packages/astro/test/page-format.test.js
+++ b/packages/astro/test/page-format.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -20,7 +21,7 @@ describe('build.format', () => {
 			it('relative urls created point to sibling folders', async () => {
 				let html = await fixture.readFile('/nested/page/index.html');
 				let $ = cheerio.load(html);
-				expect($('#another').attr('href')).to.equal('/nested/page/another/');
+				assert.equal($('#another').attr('href'), '/nested/page/another/');
 			});
 		});
 	});
@@ -45,7 +46,7 @@ describe('build.format', () => {
 			it('relative urls created point to sibling folders', async () => {
 				let html = await fixture.readFile('/nested/page.html');
 				let $ = cheerio.load(html);
-				expect($('#another').attr('href')).to.equal('/nested/another/');
+				assert.equal($('#another').attr('href'), '/nested/another/');
 			});
 		});
 	});
@@ -80,13 +81,13 @@ describe('build.format', () => {
 			it('relative urls created point to sibling folders', async () => {
 				let html = await fixture.readFile('/en/nested/page.html');
 				let $ = cheerio.load(html);
-				expect($('#another').attr('href')).to.equal('/test/en/nested/another/');
+				assert.equal($('#another').attr('href'), '/test/en/nested/another/');
 			});
 
 			it('index files are written as index.html', async () => {
 				let html = await fixture.readFile('/en/nested/index.html');
 				let $ = cheerio.load(html);
-				expect($('h1').text()).to.equal('Testing');
+				assert.equal($('h1').text(), 'Testing');
 			});
 		});
 	});
diff --git a/packages/astro/test/page-level-styles.test.js b/packages/astro/test/page-level-styles.nodetest.js
index bed538a54..eb4ba032a 100644
--- a/packages/astro/test/page-level-styles.test.js
+++ b/packages/astro/test/page-level-styles.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it } from 'node:test';
 import { load as cheerioLoad } from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -18,12 +19,12 @@ describe('Page-level styles', () => {
 	it("Doesn't add page styles for a page without style imports", async () => {
 		let html = await fixture.readFile('/index.html');
 		let $ = await cheerioLoad(html);
-		expect($('link').length).to.equal(0);
+		assert.equal($('link').length, 0);
 	});
 
 	it('Does add page styles for pages with style imports (or deps)', async () => {
 		let html = await fixture.readFile('/blog/index.html');
 		let $ = await cheerioLoad(html);
-		expect($('link').length).to.equal(1);
+		assert.equal($('link').length, 1);
 	});
 });
diff --git a/packages/astro/test/parallel.test.js b/packages/astro/test/parallel.nodetest.js
index 22b76eda0..b2b70234f 100644
--- a/packages/astro/test/parallel.test.js
+++ b/packages/astro/test/parallel.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -22,14 +23,16 @@ describe('Component parallelization', () => {
 		);
 
 		const renderStartWithin = Math.max(...startTimes) - Math.min(...startTimes);
-		expect(renderStartWithin).to.be.lessThan(
-			40, // in theory, this should be 0, but add 40ms tolerance for CI
+		assert.equal(
+			renderStartWithin < 40,
+			true, // in theory, this should be 0, but add 40ms tolerance for CI
 			"The components didn't start rendering in parallel"
 		);
 
 		const totalRenderTime = Math.max(...finishTimes) - Math.min(...startTimes);
-		expect(totalRenderTime).to.be.lessThan(
-			80, // max component delay is 40ms, add 40ms tolerance for CI
+		assert.equal(
+			totalRenderTime < 80,
+			true, // max component delay is 40ms, add 40ms tolerance for CI
 			'The total render time was significantly longer than the max component delay'
 		);
 	});
diff --git a/packages/astro/test/partials.test.js b/packages/astro/test/partials.nodetest.js
index 447458778..84880781e 100644
--- a/packages/astro/test/partials.test.js
+++ b/packages/astro/test/partials.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it, after } from 'node:test';
 import { loadFixture } from './test-utils.js';
 
 describe('Partials', () => {
@@ -25,7 +26,7 @@ describe('Partials', () => {
 
 		it('is only the written HTML', async () => {
 			const html = await fixture.fetch('/partials/item/').then((res) => res.text());
-			expect(html.startsWith('<li')).to.equal(true);
+			assert.equal(html.startsWith('<li'), true);
 		});
 	});
 
@@ -36,12 +37,12 @@ describe('Partials', () => {
 
 		it('is only the written HTML', async () => {
 			const html = await fixture.readFile('/partials/item/index.html');
-			expect(html.startsWith('<li>')).to.equal(true);
+			assert.equal(html.startsWith('<li>'), true);
 		});
 
 		it('Works with mdx', async () => {
 			const html = await fixture.readFile('/partials/docs/index.html');
-			expect(html.startsWith('<h1')).to.equal(true);
+			assert.equal(html.startsWith('<h1'), true);
 		});
 	});
 });
diff --git a/packages/astro/test/postcss.nodetest.js b/packages/astro/test/postcss.nodetest.js
new file mode 100644
index 000000000..7de73b0d8
--- /dev/null
+++ b/packages/astro/test/postcss.nodetest.js
@@ -0,0 +1,59 @@
+import assert from 'node:assert/strict';
+import { before, describe, it } from 'node:test';
+import * as cheerio from 'cheerio';
+import eol from 'eol';
+import { loadFixture } from './test-utils.js';
+
+describe('PostCSS', () => {
+	let fixture;
+	let bundledCSS;
+	before(
+		async () => {
+			fixture = await loadFixture({
+				root: './fixtures/postcss',
+				// test suite was authored when inlineStylesheets defaulted to never
+				build: { inlineStylesheets: 'never' },
+			});
+			await fixture.build();
+
+			// get bundled CSS (will be hashed, hence DOM query)
+			const html = await fixture.readFile('/index.html');
+			const $ = cheerio.load(html);
+			const bundledCSSHREF = $('link[rel=stylesheet][href^=/_astro/]').attr('href');
+			bundledCSS = (await fixture.readFile(bundledCSSHREF.replace(/^\/?/, '/')))
+				.replace(/\s/g, '')
+				.replace('/n', '');
+		},
+		{ timeout: 45000 }
+	);
+
+	/** All test cases check whether nested styles (i.e. &.nested {}) are correctly transformed */
+	it('works in Astro page styles', () => {
+		assert.match(bundledCSS, /\.astro-page\[data-astro-cid-.*?\]\.nested/);
+	});
+
+	it('works in Astro component styles', () => {
+		assert.match(bundledCSS, /\.astro-component\[data-astro-cid-.*?\]\.nested/);
+	});
+
+	it('works in JSX', () => {
+		assert.match(bundledCSS, /\.solid(\.(w|-)*)*\.nested/);
+	});
+
+	it('works in Vue', () => {
+		assert.match(bundledCSS, /\.vue(\.(w|-)*)*\.nested/);
+	});
+
+	it('works in Svelte', () => {
+		assert.match(bundledCSS, /\.svelte(\.(w|-)*)*\.nested/);
+	});
+
+	it('ignores CSS in public/', async () => {
+		const publicCSS = (await fixture.readFile('/global.css'))
+			.trim()
+			.replace(/\s/g, '')
+			.replace('/n', '');
+		// neither minified nor prefixed
+		assert.equal(eol.lf(publicCSS), '.global{appearance:none;}');
+	});
+});
diff --git a/packages/astro/test/postcss.test.js b/packages/astro/test/postcss.test.js
deleted file mode 100644
index 2ef15c4e1..000000000
--- a/packages/astro/test/postcss.test.js
+++ /dev/null
@@ -1,56 +0,0 @@
-import { expect } from 'chai';
-import * as cheerio from 'cheerio';
-import eol from 'eol';
-import { loadFixture } from './test-utils.js';
-
-describe('PostCSS', function () {
-	let fixture;
-	let bundledCSS;
-	before(async () => {
-		this.timeout(45000); // test needs a little more time in CI
-		fixture = await loadFixture({
-			root: './fixtures/postcss',
-			// test suite was authored when inlineStylesheets defaulted to never
-			build: { inlineStylesheets: 'never' },
-		});
-		await fixture.build();
-
-		// get bundled CSS (will be hashed, hence DOM query)
-		const html = await fixture.readFile('/index.html');
-		const $ = cheerio.load(html);
-		const bundledCSSHREF = $('link[rel=stylesheet][href^=/_astro/]').attr('href');
-		bundledCSS = (await fixture.readFile(bundledCSSHREF.replace(/^\/?/, '/')))
-			.replace(/\s/g, '')
-			.replace('/n', '');
-	});
-
-	/** All test cases check whether nested styles (i.e. &.nested {}) are correctly transformed */
-	it('works in Astro page styles', () => {
-		expect(bundledCSS).to.match(/\.astro-page\[data-astro-cid-.*?\]\.nested/);
-	});
-
-	it('works in Astro component styles', () => {
-		expect(bundledCSS).to.match(/\.astro-component\[data-astro-cid-.*?\]\.nested/);
-	});
-
-	it('works in JSX', () => {
-		expect(bundledCSS).to.match(/\.solid(\.(w|-)*)*\.nested/);
-	});
-
-	it('works in Vue', () => {
-		expect(bundledCSS).to.match(/\.vue(\.(w|-)*)*\.nested/);
-	});
-
-	it('works in Svelte', () => {
-		expect(bundledCSS).to.match(/\.svelte(\.(w|-)*)*\.nested/);
-	});
-
-	it('ignores CSS in public/', async () => {
-		const publicCSS = (await fixture.readFile('/global.css'))
-			.trim()
-			.replace(/\s/g, '')
-			.replace('/n', '');
-		// neither minified nor prefixed
-		expect(eol.lf(publicCSS)).to.equal(`.global{appearance:none;}`);
-	});
-});
diff --git a/packages/astro/test/preact-compat-component.test.js b/packages/astro/test/preact-compat-component.nodetest.js
index 0c1991f12..d9dc9fb71 100644
--- a/packages/astro/test/preact-compat-component.test.js
+++ b/packages/astro/test/preact-compat-component.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it, after } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -29,7 +30,7 @@ describe('Preact compat component', () => {
 			const html = await res.text();
 			const $ = cheerio.load(html);
 
-			expect($('#counter-text').text()).to.be.eq('0');
+			assert.equal($('#counter-text').text(), '0');
 		});
 	});
 
@@ -42,7 +43,7 @@ describe('Preact compat component', () => {
 			const html = await fixture.readFile('/index.html');
 			const $ = cheerio.load(html);
 
-			expect($('#counter-text').text()).to.be.eq('0');
+			assert.equal($('#counter-text').text(), '0');
 		});
 	});
 });
diff --git a/packages/astro/test/preact-component.test.js b/packages/astro/test/preact-component.nodetest.js
index a18d3c97a..e8c89d5bf 100644
--- a/packages/astro/test/preact-component.test.js
+++ b/packages/astro/test/preact-component.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -18,7 +19,7 @@ describe('Preact component', () => {
 		const $ = cheerio.load(html);
 
 		// test 1: Can use class components
-		expect($('#class-component')).to.have.lengthOf(1);
+		assert.equal($('#class-component').length, 1);
 	});
 
 	it('Can load function component', async () => {
@@ -26,9 +27,9 @@ describe('Preact component', () => {
 		const $ = cheerio.load(html);
 
 		// test 1: Can use function components
-		expect($('#fn-component')).to.have.lengthOf(1);
+		assert.equal($('#fn-component').length, 1);
 		// test 2: Can use function components
-		expect($('#arrow-fn-component')).to.have.lengthOf(1);
+		assert.equal($('#arrow-fn-component').length, 1);
 	});
 
 	it('Can load TS component', async () => {
@@ -36,13 +37,13 @@ describe('Preact component', () => {
 		const $ = cheerio.load(html);
 
 		// test 1: Can use TS components
-		expect($('.ts-component')).to.have.lengthOf(1);
+		assert.equal($('.ts-component').length, 1);
 	});
 
 	it('Can use hooks', async () => {
 		const html = await fixture.readFile('/hooks/index.html');
 		const $ = cheerio.load(html);
-		expect($('#world')).to.have.lengthOf(1);
+		assert.equal($('#world').length, 1);
 	});
 
 	it('Can export a Fragment', async () => {
@@ -50,7 +51,7 @@ describe('Preact component', () => {
 		const $ = cheerio.load(html);
 
 		// test 1: nothing rendered but it didn’t throw
-		expect($('body').children()).to.have.lengthOf(0);
+		assert.equal($('body').children().length, 0);
 	});
 
 	it('Can use a pragma comment', async () => {
@@ -58,8 +59,8 @@ describe('Preact component', () => {
 		const $ = cheerio.load(html);
 
 		// test 1: rendered the PragmaComment component
-		expect($('.pragma-comment')).to.have.lengthOf(1);
-		expect($('.pragma-comment-tsx')).to.have.lengthOf(1);
+		assert.equal($('.pragma-comment').length, 1);
+		assert.equal($('.pragma-comment-tsx').length, 1);
 	});
 
 	// In moving over to Vite, the jsx-runtime import is now obscured. TODO: update the method of finding this.
@@ -79,24 +80,24 @@ describe('Preact component', () => {
 		const jsxRuntime = component.imports.filter((i) => i.specifier.includes('jsx-runtime'));
 
 		// test 1: preact/jsx-runtime is used for the component
-		expect(jsxRuntime).to.be.ok;
+		assert.ok(jsxRuntime);
 	});
 
 	it('Can use shared signals between islands', async () => {
 		const html = await fixture.readFile('/signals/index.html');
 		const $ = cheerio.load(html);
-		expect($('.preact-signal')).to.have.a.lengthOf(2);
+		assert.equal($('.preact-signal').length, 2);
 
 		const sigs1Raw = $($('astro-island')[0]).attr('data-preact-signals');
 		const sigs2Raw = $($('astro-island')[1]).attr('data-preact-signals');
 
-		expect(sigs1Raw).to.not.be.undefined;
-		expect(sigs2Raw).to.not.be.undefined;
+		assert.notEqual(sigs1Raw, undefined);
+		assert.notEqual(sigs2Raw, undefined);
 
 		const sigs1 = JSON.parse(sigs1Raw);
 		const sigs2 = JSON.parse(sigs2Raw);
 
-		expect(sigs1.count).to.not.be.undefined;
-		expect(sigs1.count).to.equal(sigs2.count);
+		assert.notEqual(sigs1.count, undefined);
+		assert.equal(sigs1.count, sigs2.count);
 	});
 });
diff --git a/packages/astro/test/preview-routing.test.js b/packages/astro/test/preview-routing.nodetest.js
index a4b83c1c3..fe4a0d111 100644
--- a/packages/astro/test/preview-routing.test.js
+++ b/packages/astro/test/preview-routing.nodetest.js
@@ -1,8 +1,9 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it, after } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
-describe('Preview Routing', function () {
+describe('Preview Routing', () => {
 	describe('build format: directory', () => {
 		describe('Subpath without trailing slash and trailingSlash: never', () => {
 			/** @type {import('./test-utils').Fixture} */
@@ -33,34 +34,34 @@ describe('Preview Routing', function () {
 
 			it('404 when loading /', async () => {
 				const response = await fixture.fetch('/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading subpath root with trailing slash', async () => {
 				const response = await fixture.fetch('/blog/');
-				expect(response.status).to.equal(200);
-				expect(response.redirected).to.equal(false);
+				assert.equal(response.status, 200);
+				assert.equal(response.redirected, false);
 			});
 
 			it('200 when loading subpath root without trailing slash', async () => {
 				const response = await fixture.fetch('/blog');
-				expect(response.status).to.equal(200);
-				expect(response.redirected).to.equal(false);
+				assert.equal(response.status, 200);
+				assert.equal(response.redirected, false);
 			});
 
 			it('404 when loading another page with subpath used', async () => {
 				const response = await fixture.fetch('/blog/another/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading dynamic route', async () => {
 				const response = await fixture.fetch('/blog/1');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('404 when loading invalid dynamic route', async () => {
 				const response = await fixture.fetch('/blog/2');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 		});
 
@@ -90,37 +91,37 @@ describe('Preview Routing', function () {
 
 			it('404 when loading /', async () => {
 				const response = await fixture.fetch('/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading subpath root with trailing slash', async () => {
 				const response = await fixture.fetch('/blog/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('404 when loading subpath root without trailing slash', async () => {
 				const response = await fixture.fetch('/blog');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading another page with subpath used', async () => {
 				const response = await fixture.fetch('/blog/another/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('404 when loading another page with subpath not used', async () => {
 				const response = await fixture.fetch('/blog/another');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading dynamic route', async () => {
 				const response = await fixture.fetch('/blog/1/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('404 when loading invalid dynamic route', async () => {
 				const response = await fixture.fetch('/blog/2/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 		});
 
@@ -150,37 +151,37 @@ describe('Preview Routing', function () {
 
 			it('404 when loading /', async () => {
 				const response = await fixture.fetch('/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading subpath root with trailing slash', async () => {
 				const response = await fixture.fetch('/blog/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('200 when loading subpath root without trailing slash', async () => {
 				const response = await fixture.fetch('/blog');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('200 when loading another page with subpath used', async () => {
 				const response = await fixture.fetch('/blog/another/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('200 when loading another page with subpath not used', async () => {
 				const response = await fixture.fetch('/blog/another');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('200 when loading dynamic route', async () => {
 				const response = await fixture.fetch('/blog/1/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('404 when loading invalid dynamic route', async () => {
 				const response = await fixture.fetch('/blog/2/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 		});
 
@@ -209,13 +210,13 @@ describe('Preview Routing', function () {
 
 			it('renders custom 404 for /a', async () => {
 				const res = await fixture.fetch('/a');
-				expect(res.status).to.equal(404);
+				assert.equal(res.status, 404);
 
 				const html = await res.text();
 				$ = cheerio.load(html);
 
-				expect($('h1').text()).to.equal('Page not found');
-				expect($('p').text()).to.equal('This 404 is a static HTML file.');
+				assert.equal($('h1').text(), 'Page not found');
+				assert.equal($('p').text(), 'This 404 is a static HTML file.');
 			});
 		});
 	});
@@ -250,34 +251,34 @@ describe('Preview Routing', function () {
 
 			it('404 when loading /', async () => {
 				const response = await fixture.fetch('/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading subpath root with trailing slash', async () => {
 				const response = await fixture.fetch('/blog/');
-				expect(response.status).to.equal(200);
-				expect(response.redirected).to.equal(false);
+				assert.equal(response.status, 200);
+				assert.equal(response.redirected, false);
 			});
 
 			it('200 when loading subpath root without trailing slash', async () => {
 				const response = await fixture.fetch('/blog');
-				expect(response.status).to.equal(200);
-				expect(response.redirected).to.equal(false);
+				assert.equal(response.status, 200);
+				assert.equal(response.redirected, false);
 			});
 
 			it('404 when loading another page with subpath used', async () => {
 				const response = await fixture.fetch('/blog/another/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading dynamic route', async () => {
 				const response = await fixture.fetch('/blog/1');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('404 when loading invalid dynamic route', async () => {
 				const response = await fixture.fetch('/blog/2');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 		});
 
@@ -310,37 +311,37 @@ describe('Preview Routing', function () {
 
 			it('404 when loading /', async () => {
 				const response = await fixture.fetch('/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading subpath root with trailing slash', async () => {
 				const response = await fixture.fetch('/blog/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('404 when loading subpath root without trailing slash', async () => {
 				const response = await fixture.fetch('/blog');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading another page with subpath used', async () => {
 				const response = await fixture.fetch('/blog/another/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('404 when loading another page with subpath not used', async () => {
 				const response = await fixture.fetch('/blog/another');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading dynamic route', async () => {
 				const response = await fixture.fetch('/blog/1/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('404 when loading invalid dynamic route', async () => {
 				const response = await fixture.fetch('/blog/2/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 		});
 
@@ -373,37 +374,37 @@ describe('Preview Routing', function () {
 
 			it('404 when loading /', async () => {
 				const response = await fixture.fetch('/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading subpath root with trailing slash', async () => {
 				const response = await fixture.fetch('/blog/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('200 when loading subpath root without trailing slash', async () => {
 				const response = await fixture.fetch('/blog');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('200 when loading another page with subpath used', async () => {
 				const response = await fixture.fetch('/blog/another/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('200 when loading another page with subpath not used', async () => {
 				const response = await fixture.fetch('/blog/another');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('200 when loading dynamic route', async () => {
 				const response = await fixture.fetch('/blog/1/');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('404 when loading invalid dynamic route', async () => {
 				const response = await fixture.fetch('/blog/2/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 		});
 
@@ -436,27 +437,27 @@ describe('Preview Routing', function () {
 
 			it('404 when loading /', async () => {
 				const response = await fixture.fetch('/');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 
 			it('200 when loading subpath with index.html', async () => {
 				const response = await fixture.fetch('/blog/index.html');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('200 when loading another page with subpath used', async () => {
 				const response = await fixture.fetch('/blog/another.html');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('200 when loading dynamic route', async () => {
 				const response = await fixture.fetch('/blog/1.html');
-				expect(response.status).to.equal(200);
+				assert.equal(response.status, 200);
 			});
 
 			it('404 when loading invalid dynamic route', async () => {
 				const response = await fixture.fetch('/blog/2.html');
-				expect(response.status).to.equal(404);
+				assert.equal(response.status, 404);
 			});
 		});
 
@@ -488,13 +489,13 @@ describe('Preview Routing', function () {
 
 			it('renders custom 404 for /a', async () => {
 				const res = await fixture.fetch('/a');
-				expect(res.status).to.equal(404);
+				assert.equal(res.status, 404);
 
 				const html = await res.text();
 				$ = cheerio.load(html);
 
-				expect($('h1').text()).to.equal('Page not found');
-				expect($('p').text()).to.equal('This 404 is a static HTML file.');
+				assert.equal($('h1').text(), 'Page not found');
+				assert.equal($('p').text(), 'This 404 is a static HTML file.');
 			});
 		});
 	});
diff --git a/packages/astro/test/public-base-404.test.js b/packages/astro/test/public-base-404.nodetest.js
index 969e2a952..682f38b69 100644
--- a/packages/astro/test/public-base-404.test.js
+++ b/packages/astro/test/public-base-404.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it, after } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -6,6 +7,7 @@ describe('Public dev with base', () => {
 	/** @type {import('./test-utils').Fixture} */
 	let fixture;
 	let $;
+	let devServer;
 
 	before(async () => {
 		fixture = await loadFixture({
@@ -13,38 +15,42 @@ describe('Public dev with base', () => {
 			site: 'http://example.com/',
 			base: '/blog',
 		});
-		await fixture.startDevServer();
+		devServer = await fixture.startDevServer();
+	});
+
+	after(async () => {
+		await devServer.stop();
 	});
 
 	it('200 when loading /@vite/client', async () => {
 		const response = await fixture.fetch('/@vite/client', {
 			redirect: 'manual',
 		});
-		expect(response.status).to.equal(200);
+		assert.equal(response.status, 200);
 		const content = await response.text();
-		expect(content).to.contain('vite');
+		assert.equal(content.includes('vite'), true);
 	});
 
 	it('200 when loading /blog/twitter.png', async () => {
 		const response = await fixture.fetch('/blog/twitter.png', {
 			redirect: 'manual',
 		});
-		expect(response.status).to.equal(200);
+		assert.equal(response.status, 200);
 	});
 
 	it('custom 404 page when loading /blog/blog/', async () => {
 		const response = await fixture.fetch('/blog/blog/');
 		const html = await response.text();
 		$ = cheerio.load(html);
-		expect($('h1').text()).to.equal('404');
+		assert.equal($('h1').text(), '404');
 	});
 
 	it('default 404 hint page when loading /', async () => {
 		const response = await fixture.fetch('/');
-		expect(response.status).to.equal(404);
+		assert.equal(response.status, 404);
 		const html = await response.text();
 		$ = cheerio.load(html);
-		expect($('a').first().text()).to.equal('/blog');
+		assert.equal($('a').first().text(), '/blog');
 	});
 
 	it('default 404 page when loading /none/', async () => {
@@ -53,10 +59,10 @@ describe('Public dev with base', () => {
 				accept: 'text/html,*/*',
 			},
 		});
-		expect(response.status).to.equal(404);
+		assert.equal(response.status, 404);
 		const html = await response.text();
 		$ = cheerio.load(html);
-		expect($('h1').text()).to.equal('404:  Not found');
-		expect($('pre').text()).to.equal('Path: /none/');
+		assert.equal($('h1').text(), '404:  Not found');
+		assert.equal($('pre').text(), 'Path: /none/');
 	});
 });
diff --git a/packages/astro/test/react-and-solid.test.js b/packages/astro/test/react-and-solid.nodetest.js
index e15e6e7fa..59126166f 100644
--- a/packages/astro/test/react-and-solid.test.js
+++ b/packages/astro/test/react-and-solid.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -14,7 +15,7 @@ describe('Solid app with some React components', () => {
 	it('Reads jsxImportSource from tsconfig', async () => {
 		let html = await fixture.readFile('/index.html');
 		let $ = cheerio.load(html);
-		expect($('#example-solid').text()).to.equal('example solidjs component');
-		expect($('#example-react').text()).to.equal('example react component');
+		assert.equal($('#example-solid').text(), 'example solidjs component');
+		assert.equal($('#example-react').text(), 'example react component');
 	});
 });
diff --git a/packages/astro/test/react-jsx-export.test.js b/packages/astro/test/react-jsx-export.nodetest.js
index 4a206938a..6392cef03 100644
--- a/packages/astro/test/react-jsx-export.test.js
+++ b/packages/astro/test/react-jsx-export.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -42,12 +43,15 @@ describe('react-jsx-export', () => {
 		const html = await fixture.readFile('/index.html');
 		const $ = cheerio.load(html);
 
-		ids.forEach((id) => {
-			expect($(`#${id}`).text()).to.equal('Example');
-		});
+		for (const id of ids) {
+			assert.equal($(`#${id}`).text(), 'Example');
+		}
 	});
 
 	it('Cannot output React Invalid Hook warning', async () => {
-		expect(logs.every((log) => log.message.indexOf(reactInvalidHookWarning) === -1)).to.be.true;
+		assert.equal(
+			logs.every((log) => log.message.indexOf(reactInvalidHookWarning) === -1),
+			true
+		);
 	});
 });
diff --git a/packages/astro/test/redirects.test.js b/packages/astro/test/redirects.nodetest.js
index fef889be5..b3b0b0a55 100644
--- a/packages/astro/test/redirects.test.js
+++ b/packages/astro/test/redirects.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it, after } from 'node:test';
 import { loadFixture } from './test-utils.js';
 import testAdapter from './test-adapter.js';
 
@@ -31,17 +32,17 @@ describe('Astro.redirect', () => {
 			const app = await fixture.loadTestAdapterApp();
 			const request = new Request('http://example.com/secret');
 			const response = await app.render(request);
-			expect(response.status).to.equal(302);
-			expect(response.headers.get('location')).to.equal('/login');
+			assert.equal(response.status, 302);
+			assert.equal(response.headers.get('location'), '/login');
 		});
 
-		// ref: https://github.com/withastro/astro/pull/9287
+		// ref: https://github.com/withastro/astro/pull/9287#discussion_r1420739810
 		it.skip('Ignores external redirect', async () => {
 			const app = await fixture.loadTestAdapterApp();
 			const request = new Request('http://example.com/external/redirect');
 			const response = await app.render(request);
-			expect(response.status).to.equal(404);
-			expect(response.headers.get('location')).to.equal(null);
+			assert.equal(response.status, 404);
+			assert.equal(response.headers.get('location'), null);
 		});
 
 		it('Warns when used inside a component', async () => {
@@ -50,9 +51,10 @@ describe('Astro.redirect', () => {
 			const response = await app.render(request);
 			try {
 				await response.text();
-				expect(false).to.equal(true);
+				assert.equal(false, true);
 			} catch (e) {
-				expect(e.message).to.equal(
+				assert.equal(
+					e.message,
 					'The response has already been sent to the browser and cannot be altered.'
 				);
 			}
@@ -63,8 +65,8 @@ describe('Astro.redirect', () => {
 				const app = await fixture.loadTestAdapterApp();
 				const request = new Request('http://example.com/api/redirect');
 				const response = await app.render(request);
-				expect(response.status).to.equal(301);
-				expect(response.headers.get('Location')).to.equal('/test');
+				assert.equal(response.status, 301);
+				assert.equal(response.headers.get('Location'), '/test');
 			});
 
 			it('Uses 308 for non-GET methods', async () => {
@@ -73,28 +75,28 @@ describe('Astro.redirect', () => {
 					method: 'POST',
 				});
 				const response = await app.render(request);
-				expect(response.status).to.equal(308);
+				assert.equal(response.status, 308);
 			});
 
 			it('Forwards params to the target path - single param', async () => {
 				const app = await fixture.loadTestAdapterApp();
 				const request = new Request('http://example.com/source/x');
 				const response = await app.render(request);
-				expect(response.headers.get('Location')).to.equal('/not-verbatim/target1/x');
+				assert.equal(response.headers.get('Location'), '/not-verbatim/target1/x');
 			});
 
 			it('Forwards params to the target path - multiple params', async () => {
 				const app = await fixture.loadTestAdapterApp();
 				const request = new Request('http://example.com/source/x/y');
 				const response = await app.render(request);
-				expect(response.headers.get('Location')).to.equal('/not-verbatim/target2/x/y');
+				assert.equal(response.headers.get('Location'), '/not-verbatim/target2/x/y');
 			});
 
 			it('Forwards params to the target path - spread param', async () => {
 				const app = await fixture.loadTestAdapterApp();
 				const request = new Request('http://example.com/source/x/y/z');
 				const response = await app.render(request);
-				expect(response.headers.get('Location')).to.equal('/not-verbatim/target3/x/y/z');
+				assert.equal(response.headers.get('Location'), '/not-verbatim/target3/x/y/z');
 			});
 		});
 	});
@@ -126,75 +128,75 @@ describe('Astro.redirect', () => {
 
 			it("Minifies the HTML emitted when a page that doesn't exist is emitted", async () => {
 				const html = await fixture.readFile('/old/index.html');
-				expect(html).to.not.include('\n');
+				assert.equal(html.includes('\n'), false);
 			});
 
 			it('Includes the meta refresh tag in Astro.redirect pages', async () => {
 				const html = await fixture.readFile('/secret/index.html');
-				expect(html).to.include('http-equiv="refresh');
-				expect(html).to.include('url=/login');
+				assert.equal(html.includes('http-equiv="refresh'), true);
+				assert.equal(html.includes('url=/login'), true);
 			});
 
 			it('Includes the meta noindex tag', async () => {
 				const html = await fixture.readFile('/secret/index.html');
-				expect(html).to.include('name="robots');
-				expect(html).to.include('content="noindex');
+				assert.equal(html.includes('name="robots'), true);
+				assert.equal(html.includes('content="noindex'), true);
 			});
 
 			it('Includes a link to the new pages for bots to follow', async () => {
 				const html = await fixture.readFile('/secret/index.html');
-				expect(html).to.include('<a href="/login">');
+				assert.equal(html.includes('<a href="/login">'), true);
 			});
 
 			it('Includes a canonical link', async () => {
 				const html = await fixture.readFile('/secret/index.html');
-				expect(html).to.include('<link rel="canonical" href="/login">');
+				assert.equal(html.includes('<link rel="canonical" href="/login">'), true);
 			});
 
 			it('A 302 status generates a "temporary redirect" through a short delay', async () => {
 				// https://developers.google.com/search/docs/crawling-indexing/301-redirects#metarefresh
 				const html = await fixture.readFile('/secret/index.html');
-				expect(html).to.include('content="2;url=/login"');
+				assert.equal(html.includes('content="2;url=/login"'), true);
 			});
 
 			it('Includes the meta refresh tag in `redirect` config pages', async () => {
 				let html = await fixture.readFile('/one/index.html');
-				expect(html).to.include('http-equiv="refresh');
-				expect(html).to.include('url=/test');
+				assert.equal(html.includes('http-equiv="refresh'), true);
+				assert.equal(html.includes('url=/test'), true);
 
 				html = await fixture.readFile('/two/index.html');
-				expect(html).to.include('http-equiv="refresh');
-				expect(html).to.include('url=/test');
+				assert.equal(html.includes('http-equiv="refresh'), true);
+				assert.equal(html.includes('url=/test'), true);
 
 				html = await fixture.readFile('/three/index.html');
-				expect(html).to.include('http-equiv="refresh');
-				expect(html).to.include('url=/test');
+				assert.equal(html.includes('http-equiv="refresh'), true);
+				assert.equal(html.includes('url=/test'), true);
 
 				html = await fixture.readFile('/index.html');
-				expect(html).to.include('http-equiv="refresh');
-				expect(html).to.include('url=/test');
+				assert.equal(html.includes('http-equiv="refresh'), true);
+				assert.equal(html.includes('url=/test'), true);
 			});
 
 			it('Generates page for dynamic routes', async () => {
 				let html = await fixture.readFile('/blog/one/index.html');
-				expect(html).to.include('http-equiv="refresh');
-				expect(html).to.include('url=/articles/one');
+				assert.equal(html.includes('http-equiv="refresh'), true);
+				assert.equal(html.includes('url=/articles/one'), true);
 
 				html = await fixture.readFile('/blog/two/index.html');
-				expect(html).to.include('http-equiv="refresh');
-				expect(html).to.include('url=/articles/two');
+				assert.equal(html.includes('http-equiv="refresh'), true);
+				assert.equal(html.includes('url=/articles/two'), true);
 			});
 
 			it('Generates redirect pages for redirects created by middleware', async () => {
 				let html = await fixture.readFile('/middleware-redirect/index.html');
-				expect(html).to.include('http-equiv="refresh');
-				expect(html).to.include('url=/test');
+				assert.equal(html.includes('http-equiv="refresh'), true);
+				assert.equal(html.includes('url=/test'), true);
 			});
 
 			it('falls back to spread rule when dynamic rules should not match', async () => {
 				const html = await fixture.readFile('/more/old/welcome/world/index.html');
-				expect(html).to.include('http-equiv="refresh');
-				expect(html).to.include('url=/more/new/welcome/world');
+				assert.equal(html.includes('http-equiv="refresh'), true);
+				assert.equal(html.includes('url=/more/new/welcome/world'), true);
 			});
 		});
 
@@ -224,23 +226,23 @@ describe('Astro.redirect', () => {
 				let res = await fixture.fetch('/one', {
 					redirect: 'manual',
 				});
-				expect(res.status).to.equal(301);
-				expect(res.headers.get('Location')).to.equal('/');
+				assert.equal(res.status, 301);
+				assert.equal(res.headers.get('Location'), '/');
 			});
 
 			it('performs dynamic redirects', async () => {
 				const response = await fixture.fetch('/more/old/hello', { redirect: 'manual' });
-				expect(response.headers.get('Location')).to.equal('/more/hello');
+				assert.equal(response.headers.get('Location'), '/more/hello');
 			});
 
 			it('performs dynamic redirects with multiple params', async () => {
 				const response = await fixture.fetch('/more/old/hello/world', { redirect: 'manual' });
-				expect(response.headers.get('Location')).to.equal('/more/hello/world');
+				assert.equal(response.headers.get('Location'), '/more/hello/world');
 			});
 
 			it.skip('falls back to spread rule when dynamic rules should not match', async () => {
 				const response = await fixture.fetch('/more/old/welcome/world', { redirect: 'manual' });
-				expect(response.headers.get('Location')).to.equal('/more/new/welcome/world');
+				assert.equal(response.headers.get('Location'), '/more/new/welcome/world');
 			});
 		});
 	});
@@ -266,7 +268,7 @@ describe('Astro.redirect', () => {
 			try {
 				oneHtml = await fixture.readFile('/one/index.html');
 			} catch {}
-			expect(oneHtml).be.an('undefined');
+			assert.equal(oneHtml, undefined);
 		});
 	});
 });
diff --git a/packages/astro/test/reexport-astro-containing-client-component.test.js b/packages/astro/test/reexport-astro-containing-client-component.nodetest.js
index 8b37e8180..af2906210 100644
--- a/packages/astro/test/reexport-astro-containing-client-component.test.js
+++ b/packages/astro/test/reexport-astro-containing-client-component.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -13,7 +14,7 @@ describe('Re-exported astro components with client components', () => {
 	it('Is able to build and renders and stuff', async () => {
 		const html = await fixture.readFile('/index.html');
 		const $ = cheerio.load(html);
-		expect($('astro-island').length).to.equal(1);
-		expect($('astro-island').attr('component-export')).to.equal('One');
+		assert.equal($('astro-island').length, 1);
+		assert.equal($('astro-island').attr('component-export'), 'One');
 	});
 });
diff --git a/packages/astro/test/remote-css.test.js b/packages/astro/test/remote-css.nodetest.js
index 4f9a25e35..b6b0b03a1 100644
--- a/packages/astro/test/remote-css.test.js
+++ b/packages/astro/test/remote-css.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -21,7 +22,7 @@ describe('Remote CSS', () => {
 		const relPath = $('link').attr('href');
 		const css = await fixture.readFile(relPath);
 
-		expect(css).to.match(/https:\/\/unpkg.com\/open-props/);
-		expect(css).to.match(/body/);
+		assert.match(css, /https:\/\/unpkg.com\/open-props/);
+		assert.match(css, /body/);
 	});
 });
diff --git a/packages/astro/test/root-srcdir-css.test.js b/packages/astro/test/root-srcdir-css.nodetest.js
index abb452db1..581cce7a3 100644
--- a/packages/astro/test/root-srcdir-css.test.js
+++ b/packages/astro/test/root-srcdir-css.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -20,6 +21,6 @@ describe('srcDir', () => {
 
 		const relPath = $('link').attr('href');
 		const css = await fixture.readFile(relPath);
-		expect(css).to.match(/body\{color:green\}/);
+		assert.match(css, /body\{color:green\}/);
 	});
 });
diff --git a/packages/astro/test/route-manifest.test.js b/packages/astro/test/route-manifest.nodetest.js
index 169404833..169404833 100644
--- a/packages/astro/test/route-manifest.test.js
+++ b/packages/astro/test/route-manifest.nodetest.js
diff --git a/packages/astro/test/routing-priority.test.js b/packages/astro/test/routing-priority.nodetest.js
index 586978d4f..b87c353db 100644
--- a/packages/astro/test/routing-priority.test.js
+++ b/packages/astro/test/routing-priority.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { before, describe, it, after } from 'node:test';
 import { load as cheerioLoad } from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -145,7 +146,7 @@ describe('Routing priority', () => {
 				const htmlFile = isEndpoint ? url : `${appendForwardSlash(url)}index.html`;
 
 				if (fourOhFour) {
-					expect(fixture.pathExists(htmlFile)).to.be.false;
+					assert.equal(fixture.pathExists(htmlFile), false);
 					return;
 				}
 
@@ -153,15 +154,15 @@ describe('Routing priority', () => {
 				const $ = cheerioLoad(html);
 
 				if (h1) {
-					expect($('h1').text()).to.equal(h1);
+					assert.equal($('h1').text(), h1);
 				}
 
 				if (p) {
-					expect($('p').text()).to.equal(p);
+					assert.equal($('p').text(), p);
 				}
 
 				if (htmlMatch) {
-					expect(html).to.equal(htmlMatch);
+					assert.equal(html, htmlMatch);
 				}
 			});
 		});
@@ -192,20 +193,20 @@ describe('Routing priority', () => {
 				const $ = cheerioLoad(html);
 
 				if (fourOhFour) {
-					expect($('title').text()).to.equal('404: Not Found');
+					assert.equal($('title').text(), '404: Not Found');
 					return;
 				}
 
 				if (h1) {
-					expect($('h1').text()).to.equal(h1);
+					assert.equal($('h1').text(), h1);
 				}
 
 				if (p) {
-					expect($('p').text()).to.equal(p);
+					assert.equal($('p').text(), p);
 				}
 
 				if (htmlMatch) {
-					expect(html).to.equal(htmlMatch);
+					assert.equal(html, htmlMatch);
 				}
 			});
 
@@ -218,20 +219,20 @@ describe('Routing priority', () => {
 				const $ = cheerioLoad(html);
 
 				if (fourOhFour) {
-					expect($('title').text()).to.equal('404: Not Found');
+					assert.equal($('title').text(), '404: Not Found');
 					return;
 				}
 
 				if (h1) {
-					expect($('h1').text()).to.equal(h1);
+					assert.equal($('h1').text(), h1);
 				}
 
 				if (p) {
-					expect($('p').text()).to.equal(p);
+					assert.equal($('p').text(), p);
 				}
 
 				if (htmlMatch) {
-					expect(html).to.equal(htmlMatch);
+					assert.equal(html, htmlMatch);
 				}
 			});
 
@@ -243,20 +244,20 @@ describe('Routing priority', () => {
 				const $ = cheerioLoad(html);
 
 				if (fourOhFour) {
-					expect($('title').text()).to.equal('404: Not Found');
+					assert.equal($('title').text(), '404: Not Found');
 					return;
 				}
 
 				if (h1) {
-					expect($('h1').text()).to.equal(h1);
+					assert.equal($('h1').text(), h1);
 				}
 
 				if (p) {
-					expect($('p').text()).to.equal(p);
+					assert.equal($('p').text(), p);
 				}
 
 				if (htmlMatch) {
-					expect(html).to.equal(htmlMatch);
+					assert.equal(html, htmlMatch);
 				}
 			});
 		});