[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) › createLookupMap

```ts
function createLookupMap<K, V, L>(
  __namedParameters: CreateLookupMapOptions<K, V, L>,
): LookupMap<K, V>;
```

Defined in: [packages/common/src/Lookup.ts:71](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Lookup.ts#L71)

Creates [LookupMap](https://evolu.dev/docs/api-reference/common/Lookup/interfaces/LookupMap).