# isUuid7

Tests whether a string is an RFC UUID version 7 value.

## Signatures

```ts
export declare const isUuid7: (value: string) => value is Uuid7;
```

## Why

Runtime refinement restores trust after serialization has erased the TypeScript brand.

## Ownership and lifetime

This pure predicate acquires no resources and retains no input.

## Examples

```ts
import { isUuid7 } from "@typed/id/Uuid7"
const valid = isUuid7("01890f2e-7d6c-7cc0-98c4-dc0c0c07398f")
```