diff --git a/packages/astro/test/markdown.test.js b/packages/astro/test/markdown.nodetest.js
similarity index 61%
rename from packages/astro/test/markdown.test.js
rename to packages/astro/test/markdown.nodetest.js
index 1df89715b0..ad8d2de0a6 100644
--- a/packages/astro/test/markdown.test.js
+++ b/packages/astro/test/markdown.nodetest.js
@@ -1,4 +1,5 @@
-import { expect } from 'chai';
+import assert from 'node:assert/strict';
+import { describe, before, it } from 'node:test';
 import * as cheerio from 'cheerio';
 import { loadFixture } from './test-utils.js';
 
@@ -20,57 +21,57 @@ describe('Markdown tests', () => {
 		it('Can load a markdown page with the `.markdown` extension', async () => {
 			const html = await fixture.readFile('/dot-markdown-page/index.html');
 			const $ = cheerio.load(html);
-			expect($('h1').html()).to.equal('Page with alternative .markdown extension');
-			expect($('p').html()).to.equal('Hope this loads fine 🤞');
+			assert.strictEqual($('h1').html(), 'Page with alternative .markdown extension');
+			assert.strictEqual($('p').html(), 'Hope this loads fine 🤞');
 		});
 
 		it('Can load a markdown page with the `.mdwn` extension', async () => {
 			const html = await fixture.readFile('/dot-mdwn-page/index.html');
 			const $ = cheerio.load(html);
-			expect($('h1').html()).to.equal('Page with alternative .mdwn extension');
-			expect($('p').html()).to.equal('Hope this loads fine 🤞');
+			assert.strictEqual($('h1').html(), 'Page with alternative .mdwn extension');
+			assert.strictEqual($('p').html(), 'Hope this loads fine 🤞');
 		});
 
 		it('Can load a markdown page with the `.mkdn` extension', async () => {
 			const html = await fixture.readFile('/dot-mkdn-page/index.html');
 			const $ = cheerio.load(html);
-			expect($('h1').html()).to.equal('Page with alternative .mkdn extension');
-			expect($('p').html()).to.equal('Hope this loads fine 🤞');
+			assert.strictEqual($('h1').html(), 'Page with alternative .mkdn extension');
+			assert.strictEqual($('p').html(), 'Hope this loads fine 🤞');
 		});
 
 		it('Can load a markdown page with the `.mdown` extension', async () => {
 			const html = await fixture.readFile('/dot-mdown-page/index.html');
 			const $ = cheerio.load(html);
-			expect($('h1').html()).to.equal('Page with alternative .mdown extension');
-			expect($('p').html()).to.equal('Hope this loads fine 🤞');
+			assert.strictEqual($('h1').html(), 'Page with alternative .mdown extension');
+			assert.strictEqual($('p').html(), 'Hope this loads fine 🤞');
 		});
 
 		it('Can load a markdown page with the `.mkd` extension', async () => {
 			const html = await fixture.readFile('/dot-mkd-page/index.html');
 			const $ = cheerio.load(html);
-			expect($('h1').html()).to.equal('Page with alternative .mkd extension');
-			expect($('p').html()).to.equal('Hope this loads fine 🤞');
+			assert.strictEqual($('h1').html(), 'Page with alternative .mkd extension');
+			assert.strictEqual($('p').html(), 'Hope this loads fine 🤞');
 		});
 
 		it('Can load a simple markdown page with Astro', async () => {
 			const html = await fixture.readFile('/post/index.html');
 			const $ = cheerio.load(html);
 
-			expect($('p').first().text()).to.equal('Hello world!');
-			expect($('#first').text()).to.equal('Some content');
-			expect($('#interesting-topic').text()).to.equal('Interesting Topic');
+			assert.strictEqual($('p').first().text(), 'Hello world!');
+			assert.strictEqual($('#first').text(), 'Some content');
+			assert.strictEqual($('#interesting-topic').text(), 'Interesting Topic');
 		});
 
 		it('Can load a realworld markdown page with Astro', async () => {
 			const html = await fixture.readFile('/realworld/index.html');
 			const $ = cheerio.load(html);
 
-			expect($('pre')).to.have.lengthOf(7);
+			assert.strictEqual($('pre').length, 7);
 		});
 
 		it('Does not unescape entities', async () => {
 			const html = await fixture.readFile('/entities/index.html');
-			expect(html).to.match(/<i>This should NOT be italic<\/i>/);
+			assert.match(html, /<i>This should NOT be italic<\/i>/);
 		});
 	});
 });