In Next.js 15, request APIs are promises. Await `cookies()` wherever it is read, and apply the same migration to `headers()`, `params`, and `searchParams`: ```tsx import { cookies } from 'next/headers' export default async function Page() { const cookieStore = await cookies() const session = cookieStore.get('session') return <Dashboard session={session?.value ?? null} /> } ``` Update middleware, layouts, route handlers, and server actions too; run the async request API codemod or search for u...
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# Fix async request APIs
In Next.js 15, request APIs are promises. Await `cookies()` wherever it is read, and apply the same migration to `headers()`, `params`, and `searchParams`:
```tsx
import { cookies } from 'next/headers'
export default async function Page() {
const cookieStore = await cookies()
const session = cookieStore.get('session')
return <Dashboard session={session?.value ?? null} />
}
```
Update middleware, layouts, route handlers, and server actions too; run the async request API codemod or search for unawaited calls before verifying with `next build`.
