## decodeBase64() function

Decodes a base64 string. Handles both browser and Node environments. Supports Unicode characters.

**Signature:**

```typescript
export declare function decodeBase64(data: string): string;
```

## Parameters

| Parameter | Type   | Description                                   |
|-----------|--------|-----------------------------------------------|
| data      | string | The base-64 encoded input string.            |

**Returns:**

string

The decoded string.