Next.js Dynamic Architecture: Navigating Async Params

Next.js dynamic routing represents a shift toward a Promise-based API for handling layout parameters. Let's explore how to implement this cleanly.

Understanding Async Params

In Next.js, params and searchParams are now promises. This means you must explicitly unwrap them using await or the use() hook before accessing properties.

Implementation Example

// app/services/[slug]/page.tsx
interface RouteParams {
  params: Promise<{ slug: string }>
}

export default async function Page({ params }: RouteParams) {
  const { slug } = await params;
  const data = await fetchService(slug);
  
  return (
    <div>{data.title}</div>
  )
}

Conclusion

Unwrapping dynamic properties during static generation helps prevent build errors and improves server-side response times in modern Next.js configurations.