Issue #2550717 follow-up by bnjmnm, tedbow, lauriii: [JS] Replace jQuery.cookie with JS-cookie and provide a BC layer

core/core.libraries.yml

@@ -666,5 +666,3 @@ js-cookie:
     gpl-compatible: true
   js:
     assets/vendor/js-cookie/js.cookie.min.js: {}
-  dependencies:
-    - core/drupal.object.assign

core/misc/jquery.cookie.shim.es6.js

@@ -120,7 +120,7 @@
     if (value !== undefined && !isFunction(value)) {
       // The caller is setting a cookie value and not trying to retrieve the
       // cookie value using a converter callback.
-      const attributes = Object.assign($.cookie.defaults, options);
+      const attributes = { ...$.cookie.defaults, ...options };
 
       if (!$.cookie.json) {
         // An object that is passed in must be typecast to a string when the
@@ -201,7 +201,7 @@
     Drupal.deprecationError({
       message: `jQuery.removeCookie() ${deprecatedMessageSuffix}`,
     });
-    cookies.remove(key, Object.assign($.cookie.defaults, options));
+    cookies.remove(key, { ...$.cookie.defaults, ...options });
     return !cookies.get(key);
   };
 })(jQuery, Drupal, window.Cookies);

core/misc/jquery.cookie.shim.js

@@ -44,7 +44,7 @@ function _defineProperty(obj, key, value) { if (key in obj) { Object.definePrope
     });
 
     if (value !== undefined && !isFunction(value)) {
-      var attributes = Object.assign($.cookie.defaults, options);
+      var attributes = _objectSpread({}, $.cookie.defaults, {}, options);
 
       if (!$.cookie.json) {
         value = String(value);
@@ -79,7 +79,7 @@ function _defineProperty(obj, key, value) { if (key in obj) { Object.definePrope
     Drupal.deprecationError({
       message: "jQuery.removeCookie() ".concat(deprecatedMessageSuffix)
     });
-    cookies.remove(key, Object.assign($.cookie.defaults, options));
+    cookies.remove(key, _objectSpread({}, $.cookie.defaults, {}, options));
     return !cookies.get(key);
   };
 })(jQuery, Drupal, window.Cookies);