Partitioned

README.md

@@ -70,6 +70,7 @@ The following fields can be added to the mentioned object:
 | `path` | A `string` that limits the access of the cookie to that path. | The current path. |
 | `secure` | A `boolean` indicating whether the cookie shall only be accessible over a secure connection or not. | `false` |
 | `sameSite` | A `string` that specifies SameSite attribute that restricts cookie access based on the site context. | `null` |
+| `partitioned` | A `boolean` indicating whether the cookie is partitioned and stored separately per top-level site to prevent cross-site tracking. | `false` |
 
 You can customize the default settings by manipulating `cookie.defaults`.
 

dist/cookie.cjs.js

@@ -88,7 +88,10 @@ cookie.set = function (key, value, options) {
     sameSite = sameSite ? ';SameSite=' + sameSite : '';
     if (options.sameSite === null) sameSite = '';
 
-    document.cookie = utils.encode(key) + '=' + utils.encode(value) + expires + path + domain + secure + sameSite;
+    var partitioned = options.partitioned || this.defaults.partitioned ? ';partitioned' : '';
+    if (options.partitioned === false) partitioned = '';
+
+    document.cookie = utils.encode(key) + '=' + utils.encode(value) + expires + path + domain + secure + sameSite + partitioned;
   }
 
   return this; // Return the `cookie` object to make chaining possible.

dist/cookie.esm.js

@@ -86,7 +86,10 @@ cookie.set = function (key, value, options) {
     sameSite = sameSite ? ';SameSite=' + sameSite : '';
     if (options.sameSite === null) sameSite = '';
 
-    document.cookie = utils.encode(key) + '=' + utils.encode(value) + expires + path + domain + secure + sameSite;
+    var partitioned = options.partitioned || this.defaults.partitioned ? ';partitioned' : '';
+    if (options.partitioned === false) partitioned = '';
+
+    document.cookie = utils.encode(key) + '=' + utils.encode(value) + expires + path + domain + secure + sameSite + partitioned;
   }
 
   return this; // Return the `cookie` object to make chaining possible.

dist/cookie.umd.js

@@ -2,7 +2,7 @@
   typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
   typeof define === 'function' && define.amd ? define(factory) :
   (global = global || self, global.cookie = factory());
-}(this, function () { 'use strict';
+}(this, (function () { 'use strict';
 
   // Copyright (c) Florian Hartmann, https://github.com/florian https://github.com/florian/cookie.js
 
@@ -92,7 +92,10 @@
       sameSite = sameSite ? ';SameSite=' + sameSite : '';
       if (options.sameSite === null) sameSite = '';
 
-      document.cookie = utils.encode(key) + '=' + utils.encode(value) + expires + path + domain + secure + sameSite;
+      var partitioned = options.partitioned || this.defaults.partitioned ? ';partitioned' : '';
+      if (options.partitioned === false) partitioned = '';
+
+      document.cookie = utils.encode(key) + '=' + utils.encode(value) + expires + path + domain + secure + sameSite + partitioned;
     }
 
     return this; // Return the `cookie` object to make chaining possible.
@@ -178,4 +181,4 @@
 
   return cookie;
 
-}));
+})));

src/cookie.js

@@ -86,7 +86,10 @@ cookie.set = function (key, value, options) {
     sameSite = sameSite ? ';SameSite=' + sameSite : '';
     if (options.sameSite === null) sameSite = '';
 
-    document.cookie = utils.encode(key) + '=' + utils.encode(value) + expires + path + domain + secure + sameSite;
+    var partitioned = options.partitioned || this.defaults.partitioned ? ';partitioned' : '';
+    if (options.partitioned === false) partitioned = '';
+
+    document.cookie = utils.encode(key) + '=' + utils.encode(value) + expires + path + domain + secure + sameSite + partitioned;
   }
 
   return this; // Return the `cookie` object to make chaining possible.

tests/shared_no_jsdom.js

@@ -71,6 +71,26 @@ exports.test = function(context) {
 
         mockStorage.should.deep.equal(['a=1']);
       });
+
+      it('should set partitioned flag for a cookie', function() {
+        cookie.set('a', '1', { partitioned: true });
+
+        mockStorage.should.deep.equal(['a=1;partitioned']);
+      });
+
+      it('uses the default partitioned flag', function() {
+        cookie.defaults = { partitioned: true };
+        cookie.set('a', '1');
+
+        mockStorage.should.deep.equal(['a=1;partitioned']);
+      });
+
+      it('allows to override the default partitioned flag', function() {
+        cookie.defaults = { partitioned: true };
+        cookie.set('a', '1', { partitioned: false });
+
+        mockStorage.should.deep.equal(['a=1']);
+      });
     });
   });
 };