--- 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