What could be preventing me from seeing cookies in route.ts?

[gcb]

tried next15+react19, and next14+react18... happens on both. (node v23.9.0 linux)

// app/tags/[userid]/route.ts
export async function GET(request: NextRequest) {
	const x = request.cookies.get('u'); // undefined
	console.log(x);
	const cookie_jar = await cookies();
	console.log(cookie_jar); // RequestCookies { _parsed: Map(0) {}, _headers: Headers {} }

the requests do have valid cookies.

And if I simply rename route.ts->page.tsx i get the cookies just fine.

nextconfig have experimental.authInterrupts=true but removing it doesn't change anything. That's the only change from the default create new nextjs project...

[gcb]

Any ideas?

On route.ts I get:

console.log((await cookies()));
// RequestCookies { _parsed: Map(0) {}, _headers: Headers {} }

while on page.tsx:

console.log((await cookies()));
// RequestCookies {
  _parsed: Map(2) {
    '__next_hmr_refresh_hash__' => {
      name: '__next_hmr_refresh_hash__',
      value: '740200345bb3bb6e7882c7be29575187633457081244afec'
    },
    'u' => {
      name: 'u',
      value: '{"...

[icyJoseph]

Hi,

What other settings do you have? I can't reproduce.

➜ curl localhost:1234/foo --cookie token=bar -v

* Host localhost:1234 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
*   Trying [::1]:1234...
* Connected to localhost (::1) port 1234
> GET /foo HTTP/1.1
> Host: localhost:1234
> User-Agent: curl/8.7.1
> Accept: */*
> Cookie: token=bar
> 
* Request completely sent off
< HTTP/1.1 200 OK
< content-type: text/plain;charset=UTF-8
< set-cookie: token=bar
< Date: Thu, 22 May 2025 09:04:50 GMT
< Connection: keep-alive
< Keep-Alive: timeout=5
< Transfer-Encoding: chunked
< 
* Connection #0 to host localhost left intact
Hello, Next.js!% 

Notice the set-cookie header. What Next.js version are you using? I used Node 23.9.0, and Next.js 15.3.2 ~ worked fine, using this route:

import { cookies } from 'next/headers'
 
export async function GET(request: Request) {
  const cookieStore = await cookies()
  const token = cookieStore.get('token')
 
  return new Response('Hello, Next.js!', {
    status: 200,
    headers: { 'Set-Cookie': `token=${token.value}` },
  })
}

[gcb]

Thanks for checking. I cannot reproduce this anymore either. i will keep an eye if i can isolate any case. But exactly same code from last week now works fine. Also found several people with the same problem on stackoverflow when I posted the question. So strange, specially because i can't say any other code changed from then.

[gcb]

found the cause in case anyone have the same problem. My code failing to get cookies was in a library called from several pages/routes.

One of the routes had export const dynamic = 'force-static';