This function is used to peek at the data from a port. It returns the first element in the specified port without removing that element. If the port is empty, the string “NULL PORT DATA” will be returned.
<b>Signature:</b>
```typescript
peek(port: Port): string | number | object;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| port | [Port](./bitburner.port.md) | Port to peek. Must be an integer between 1 and 20. |