---
url: >-
  https://lit-ui-router.dev/reference/ui-router-registry/index/interfaces/Register.md
---
[ui-router-registry](../../index.md) / [ui-router-registry](../index.md) / Register

# Interface: Register

Defined in: [registry.ts:124](https://github.com/simshanith/lit-ui-router/blob/740888c2b2ba358c4dfa52a122e927df6a604b12/packages/ui-router-registry/src/registry.ts#L124)

The app's state declarations at one augmentation site, read alongside
[RegisteredStates](RegisteredStates.md):

```ts
declare module 'ui-router-registry' {
  interface Register {
    states: (typeof appStates)[number] | (typeof lazyStates)[number];
  }
}
```