feature-architecture

Structure Next.js projects by colocating domain logic under src/features and keeping src/app as thin routes. This feature-based architecture isolates schemas, types, components, queries, hooks, stores, mocks, and constants within dedicated folders for scalable collaboration.

The best way to enforce import boundaries is using barrel exports. Create a single barrel index per feature to expose its public API, ensuring other modules only import through this index rather than reaching into internal files directly.

Create a new feature module by setting up a dedicated folder under src/features for your domain logic, adding subfolders for schemas, types, and hooks, then integrating a barrel index export to expose the feature publicly.

Yes, feature-based architecture works with the Next.js App Router by keeping src/app thin. Route files act as navigational entry points while all domain logic, queries, and stores remain colocated under src/features.

Avoid feature-based architecture for small Next.js projects where the overhead of creating dedicated folders and barrel exports for every domain module outweighs the collaboration benefits of strict import boundaries and colocated logic.

Use barrel exports for domain modules to consolidate TypeScript imports and exports. A single index file exposes the public API of a feature, preventing deep import paths and maintaining clear structural boundaries between isolated modules.