Use immer

```ts
store.register(
  'navigation/setModal',
  (_, modal: string) => (state) =>
    produce(state, (draft) => {
      draft.modal = modal;
    }),
);
```
becomes
```ts
store.register(
  'navigation/setModal',
  (_, modal: string) => (draft) => {
    draft.modal = modal;
  },
);
```