Small tweaks

Author: mjackson

packages/headers/src/lib/set-cookie.ts

@@ -95,8 +95,10 @@ export class SetCookie implements HeaderValue, SetCookieInit {
                 break;
               case 'expires': {
                 if (typeof value === 'string') {
-                  let v = new Date(value);
-                  if (isValidDate(v)) this.expires = v;
+                  let date = new Date(value);
+                  if (isValidDate(date)) {
+                    this.expires = date;
+                  }
                 }
                 break;
               }

packages/headers/src/lib/super-headers.ts

@@ -7,7 +7,7 @@ import { type CookieInit, Cookie } from './cookie.ts';
 import { canonicalHeaderName } from './header-names.ts';
 import { type HeaderValue } from './header-value.ts';
 import { type SetCookieInit, SetCookie } from './set-cookie.ts';
-import { isIterable, isValidDate } from './utils.ts';
+import { isIterable } from './utils.ts';
 
 const CRLF = '\r\n';
 const SetCookieKey = 'set-cookie';
@@ -595,9 +595,9 @@ export class SuperHeaders extends Headers {
       }
     }
 
-    let header = new ctor();
-    this.#map.set(key, header);
-    return header;
+    let obj = new ctor();
+    this.#map.set(key, obj); // cache the new object
+    return obj;
   }
 
   #setHeaderValue(key: string, ctor: new (init?: string) => HeaderValue, value: any): void {