## tryGetJwtExpiration() function

Returns the JWT expiration time in number of milliseconds elapsed since the epoch.

**Signature:**

```typescript
export declare function tryGetJwtExpiration(token: string): number | undefined;
```

## Parameters

| Parameter | Type   | Description                      |
|-----------|--------|----------------------------------|
| token     | string | The JWT token.                  |

**Returns:**

number | undefined

The JWT expiration time in number of milliseconds elapsed since the epoch if available, undefined if unknown.