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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [CommonEventEmitter](./puppeteer.commoneventemitter.md) &gt; [listenerCount](./puppeteer.commoneventemitter.listenercount.md)

## CommonEventEmitter.listenerCount() method

<b>Signature:</b>

```typescript
listenerCount(event: string): number;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  event | string |  |

<b>Returns:</b>

number

