From ff3c97a0bcfb946aaac186ad03f03821f4d1554c Mon Sep 17 00:00:00 2001
From: "a.mirian" <mirian@hasintech.com>
Date: Wed, 6 Mar 2019 12:00:01 +0330
Subject: [PATCH] fix(server): correctly remove cookies

---
 src/server/server-cookies.service.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/server/server-cookies.service.ts b/src/server/server-cookies.service.ts
index 9a28554..5f1db34 100644
--- a/src/server/server-cookies.service.ts
+++ b/src/server/server-cookies.service.ts
@@ -41,7 +41,11 @@ export class ServerCookiesService extends CookiesService {
       options?: CookiesOptions
     ) => {
       this.newCookies[name] = value;
-      this.response.cookie(name, value, this.buildCookiesOptions(options));
+      if(value == undefined) { // null or undefined
+        this.response.clearCookie(name, this.buildCookiesOptions(options));
+      } else {
+        this.response.cookie(name, value, this.buildCookiesOptions(options));
+      }
     };
   }