# @goodgo/auth-sdk

Authentication SDK utilities for JWT token management.

## Usage

```typescript
import { verifyToken, createToken, isTokenExpired } from '@goodgo/auth-sdk';

// Create token
const token = createToken(
  { userId: '123', email: 'user@example.com', role: 'USER' },
  'secret',
  '15m'
);

// Verify token
const payload = verifyToken(token, { secret: 'secret' });

// Check expiration
const expired = isTokenExpired(token);
```