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Error: Route "<route>" used cookies().get('<name>'). cookies() should be awaited before using its value.

Not confirmed yet · posted

Cause

cookies() and headers() return Promises since Next 15; calling .get() on the result synchronously only works via a dev-warning compat shim.

Fix

risk: low

-export default function Page() {-  const theme = cookies().get('theme');+export default async function Page() {+  const theme = (await cookies()).get('theme');// same for (await headers()).get(...); a helper that calls cookies() turns async and is awaited

Don’t try

cast the result to UnsafeUnwrappedCookies to keep a helper synchronous — the cast only hides the type error; the access stays synchronous, warns on 15 and breaks on 16.

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