router-core/type-safety

Full type inference in TanStack Router is achieved by declaring router type registration and applying module augmentation, ensuring params, search params, context, and loader data are fully inferred without manual casts.

Type safety in code-splitting patterns is maintained by leveraging getRouteApi and module augmentation, ensuring robust type narrowing and precise inference across dynamically loaded route components.

TanStack Router supports end-to-end type inference for route declarations and hooks by enforcing frontmatter metadata and module augmentation, preventing explicit type annotations and ensuring safer composition.

Type inference on search params and loader data is lost without proper router type registration, but applying module augmentation and getRouteApi restores fully inferred types across your route tree.

getRouteApi enforces type narrowing in TypeScript routing code by providing a type-safe interface for route parameters and loader data, enabling precise type composition without explicit casts.