Support partitioned cookies

.changeset/nine-olives-drop.md

@@ -0,0 +1,5 @@
+---
+'astro': minor
+---
+
+Updates the `AstroCookieSetOptions` type exported from `astro` to allow partitioned cookies

packages/astro/src/core/config/schemas/base.ts

@@ -462,6 +462,7 @@ export const AstroConfigSchema = z.object({
 					maxAge: z.number().optional(),
 					sameSite: z.union([z.enum(['strict', 'lax', 'none']), z.boolean()]).optional(),
 					secure: z.boolean().optional(),
+					partitioned: z.boolean().optional(),
 				})
 				.or(z.string())
 				.transform((val) => {

packages/astro/src/core/cookies/cookies.ts

@@ -4,7 +4,7 @@ import { AstroError, AstroErrorData } from '../errors/index.js';
 
 export type AstroCookieSetOptions = Pick<
 	SerializeOptions,
-	'domain' | 'path' | 'expires' | 'maxAge' | 'httpOnly' | 'sameSite' | 'secure' | 'encode'
+	'domain' | 'path' | 'expires' | 'maxAge' | 'httpOnly' | 'sameSite' | 'secure' | 'encode' | 'partitioned'
 >;
 
 export interface AstroCookieGetOptions {

packages/integrations/netlify/test/functions/cookies.test.js

@@ -27,6 +27,18 @@ describe(
 			assert.deepEqual(resp.headers.getSetCookie(), ['foo=foo; HttpOnly', 'bar=bar; HttpOnly']);
 		});
 
+		it('Can set partitioned cookie', async () => {
+			const entryURL = new URL(
+				'./fixtures/cookies/.netlify/v1/functions/ssr/ssr.mjs',
+				import.meta.url,
+			);
+			const { default: handler } = await import(entryURL);
+			const resp = await handler(new Request('http://example.com/partitioned'), {});
+			assert.equal(resp.status, 200);
+			const cookie = resp.headers.getSetCookie()[0];
+			assert.ok(cookie.includes('Partitioned'), 'Cookie should include Partitioned attribute');
+		});
+
 		it('renders dynamic 404 page', async () => {
 			const entryURL = new URL(
 				'./fixtures/cookies/.netlify/v1/functions/ssr/ssr.mjs',

packages/integrations/netlify/test/functions/fixtures/cookies/src/pages/partitioned.js

@@ -0,0 +1,5 @@
+
+export function GET({ cookies }) {
+	cookies.set('partitioned-cookie', 'value', { partitioned: true, secure: true });
+	return new Response('ok');
+}