[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Lookup](https://evolu.dev/docs/api-reference/common/Lookup) › CreateLookupSetOptions

Defined in: [packages/common/src/Lookup.ts:196](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Lookup.ts#L196)

Options for [createLookupSet](https://evolu.dev/docs/api-reference/common/Lookup/functions/createLookupSet).

## Extends

- `Required`\<[`LookupOption`](https://evolu.dev/docs/api-reference/common/Lookup/interfaces/LookupOption)\<`K`, `L`\>\>

## Properties

<a id="lookup"></a>

### lookup

```ts
readonly lookup: Lookup<K, L>;
```

Defined in: [packages/common/src/Lookup.ts:44](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Lookup.ts#L44)

Derives the lookup key used for logical equality.

#### Inherited from

```ts
Required.lookup;
```

---

<a id="values"></a>

### values?

```ts
readonly optional values?: Iterable<K, any, any>;
```

Defined in: [packages/common/src/Lookup.ts:200](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Lookup.ts#L200)

Initial values for the set.