Use .mjs extension when building for netlify edge and vercel serverless (#6317)

1 files changed, 18 insertions, 0 deletions

diff --git a/packages/integrations/vercel/test/serverless-prerender.test.js b/packages/integrations/vercel/test/serverless-prerender.test.js
new file mode 100644
index 000000000..4cada43a7
--- /dev/null
+++ b/packages/integrations/vercel/test/serverless-prerender.test.js
@@ -0,0 +1,18 @@
+import { loadFixture } from './test-utils.js';
+import { expect } from 'chai';
+
+describe('Serverless prerender', () => {
+	/** @type {import('./test-utils').Fixture} */
+	let fixture;
+
+	before(async () => {
+		fixture = await loadFixture({
+			root: './fixtures/serverless-prerender/',
+		});
+	});
+
+	it('build successful', async () => {
+		await fixture.build();
+		expect(fixture.readFile('/static/index.html')).to.be.ok;
+	});
+});