> ## Documentation Index
> Fetch the complete documentation index at: https://docs.qu.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Listener

```ts theme={null}
type Listener: (...args) => void;
```

A callback function called when a an event is triggered.

## Parameters

| Parameter | Type     |
| :-------- | :------- |
| ...`args` | `any`\[] |

## Returns

`void`

## Source

[utils/events.ts:13](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/utils/events.ts#L13)