puppeteer/website/versioned_docs/version-21.1.1/api/puppeteer.commoneventemitter.emit.md

---
sidebar_label: CommonEventEmitter.emit
---

# CommonEventEmitter.emit() method

#### Signature:

```typescript
interface CommonEventEmitter {
  emit(event: EventType, eventData?: unknown): boolean;
}
```

## Parameters

| Parameter | Type                                  | Description  |
| --------- | ------------------------------------- | ------------ |
| event     | [EventType](./puppeteer.eventtype.md) |              |
| eventData | unknown                               | _(Optional)_ |

**Returns:**

boolean