feat: add partitioned

cookie.js

@@ -95,7 +95,7 @@ function parse (str, options) {
     const key = str.substring(pos, eqIdx++).trim()
 
     // only assign once
-    if (undefined === result[key]) {
+    if (result[key] === undefined) {
       const val = (str.charCodeAt(eqIdx) === 0x22)
         ? str.substring(eqIdx + 1, terminatorPos - 1).trim()
         : str.substring(eqIdx, terminatorPos).trim()
@@ -183,6 +183,10 @@ function serialize (name, val, options) {
     str += '; Secure'
   }
 
+  if (opt.partitioned) {
+    str += '; Partitioned'
+  }
+
   if (opt.sameSite) {
     const sameSite = typeof opt.sameSite === 'string'
       ? opt.sameSite.toLowerCase()

test/cookie.test.js

@@ -92,6 +92,46 @@ test('should set multiple cookies', (t) => {
   })
 })
 
+test('should set multiple cookies', (t) => {
+  t.plan(12)
+  const fastify = Fastify()
+  fastify.register(plugin)
+
+  fastify.get('/', (req, reply) => {
+    reply
+      .setCookie('foo', 'foo')
+      .cookie('bar', 'test', {
+        partitioned: true
+      })
+      .setCookie('wee', 'woo', {
+        partitioned: true,
+        secure: true
+      })
+      .send({ hello: 'world' })
+  })
+
+  fastify.inject({
+    method: 'GET',
+    url: '/'
+  }, (err, res) => {
+    t.error(err)
+    t.equal(res.statusCode, 200)
+    t.same(JSON.parse(res.body), { hello: 'world' })
+
+    const cookies = res.cookies
+    t.equal(cookies.length, 3)
+    t.equal(cookies[0].name, 'foo')
+    t.equal(cookies[0].value, 'foo')
+    t.equal(cookies[1].name, 'bar')
+    t.equal(cookies[1].value, 'test')
+    t.equal(cookies[2].name, 'wee')
+    t.equal(cookies[2].value, 'woo')
+
+    t.equal(res.headers['set-cookie'][1], 'bar=test; Partitioned')
+    t.equal(res.headers['set-cookie'][2], 'wee=woo; Secure; Partitioned')
+  })
+})
+
 test('cookies get set correctly with millisecond dates', (t) => {
   t.plan(8)
   const fastify = Fastify()

types/plugin.d.ts

@@ -125,9 +125,9 @@ declare namespace fastifyCookie {
     httpOnly?: boolean;
     /**  A `number` in seconds that specifies the `Expires` attribute by adding the specified seconds to the current date. If both `expires` and `maxAge` are set, then `expires` is used. */
     maxAge?: number;
+    partitioned?: boolean;
     /**  The `Path` attribute. Defaults to `/` (the root path).  */
     path?: string;
-    priority?: "low" | "medium" | "high";
     /** A `boolean` or one of the `SameSite` string attributes. E.g.: `lax`, `none` or `strict`.  */
     sameSite?: 'lax' | 'none' | 'strict' | boolean;
     /**  The `boolean` value of the `Secure` attribute. Set this option to false when communicating over an unencrypted (HTTP) connection. Value can be set to `auto`; in this case the `Secure` attribute will be set to false for HTTP request, in case of HTTPS it will be set to true.  Defaults to true. */

types/plugin.test-d.ts

@@ -172,6 +172,7 @@ const parseOptions: fastifyCookieStar.CookieSerializeOptions = {
   sameSite: 'lax',
   secure: true,
   signed: true,
+  partitioned: false,
 };
 expectType<fastifyCookieStar.CookieSerializeOptions>(parseOptions);