[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:7666](https://github.com/evoluhq/evolu/blob/dd96d79f1dbe9a49fa12ce8e0aa7d3d0177795ca/packages/common/src/Type.ts#L7666)

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);
```