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

# Interface: Register

Defined in: [registry.ts:34](https://github.com/simshanith/lit-ui-router/blob/251586fb2ad2b81ffe14422bb417dff339b69e07/packages/ui-router-registry/src/registry.ts#L34)

The app's state declarations, filled in by module augmentation:

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