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

```ts
function nullableToOptional<Props>(
  props: Props,
): ObjectType<NullableToOptionalProps<Props>>;
```

Defined in: [packages/common/src/Type.ts:4424](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Type.ts#L4424)

Converts each “nullable” property (a union that includes [Null](https://evolu.dev/docs/api-reference/common/Type/variables/Null)) into an
[optional](https://evolu.dev/docs/api-reference/common/Type/functions/optional) property. This means consumers can omit the property
entirely, or set it to `null`, or set it to the non-null member of the
union.