Allow setting domain when deleting cookies

.changeset/small-ravens-cover.md

@@ -0,0 +1,5 @@
+---
+'astro': minor
+---
+
+Allow setting domain when deleting cookies

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

@@ -11,9 +11,7 @@ interface AstroCookieSetOptions {
 	secure?: boolean;
 }
 
-interface AstroCookieDeleteOptions {
-	path?: string;
-}
+type AstroCookieDeleteOptions = Pick<AstroCookieSetOptions, 'domain' | 'path'>;
 
 interface AstroCookieInterface {
 	value: string | undefined;
@@ -75,6 +73,9 @@ class AstroCookies implements AstroCookiesInterface {
 			expires: DELETED_EXPIRATION,
 		};
 
+		if (options?.domain) {
+			serializeOptions.domain = options.domain;
+		}
 		if (options?.path) {
 			serializeOptions.path = options.path;
 		}

packages/astro/test/units/cookies/delete.test.js

@@ -56,5 +56,16 @@ describe('astro/src/core/cookies', () => {
 			expect(headers).to.have.a.lengthOf(1);
 			expect(headers[0]).to.match(/Path=\/subpath\//);
 		});
+
+		it('can provide a domain', () => {
+			let req = new Request('http://example.com/');
+			let cookies = new AstroCookies(req);
+			cookies.delete('foo', {
+				domain: '.example.com',
+			});
+			let headers = Array.from(cookies.headers());
+			expect(headers).to.have.a.lengthOf(1);
+			expect(headers[0]).to.match(/Domain=\.example\.com/);
+		});
 	});
 });