puppeteer/website/versioned_docs/version-21.3.0/api/puppeteer.commoneventemitter.md
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---
sidebar_label: CommonEventEmitter
---
# CommonEventEmitter interface
#### Signature:
```typescript
export interface CommonEventEmitter<Events extends Record<EventType, unknown>>
```
## Methods
| Method | Description |
| --------------------------------------------------------------------------------- | ----------- |
| [addListener(type, handler)](./puppeteer.commoneventemitter.addlistener.md) | |
| [emit(type, event)](./puppeteer.commoneventemitter.emit.md) | |
| [listenerCount(event)](./puppeteer.commoneventemitter.listenercount.md) | |
| [off(type, handler)](./puppeteer.commoneventemitter.off.md) | |
| [on(type, handler)](./puppeteer.commoneventemitter.on.md) | |
| [once(type, handler)](./puppeteer.commoneventemitter.once.md) | |
| [removeAllListeners(event)](./puppeteer.commoneventemitter.removealllisteners.md) | |
| [removeListener(type, handler)](./puppeteer.commoneventemitter.removelistener.md) | |