[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) › nonNegative

```ts
const nonNegative: BrandFactory<"NonNegative", number, NonNegativeError>;
```

Defined in: [packages/common/src/Type.ts:6292](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Type.ts#L6292)

Number [Brand](https://evolu.dev/docs/api-reference/common/Brand/interfaces/Brand) requiring a value greater than or equal to zero.

### Example

```ts

const NonNegative = nonNegative(Number);

assertOk(NonNegative.fromUnknown(0), 0);
```