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24 lines
358 B
Markdown
24 lines
358 B
Markdown
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---
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sidebar_label: CommonEventEmitter.listenerCount
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---
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# CommonEventEmitter.listenerCount() method
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**Signature:**
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```typescript
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interface CommonEventEmitter {
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listenerCount(event: string): number;
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}
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```
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## Parameters
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| Parameter | Type | Description |
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| --------- | ------ | ----------- |
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| event | string | |
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**Returns:**
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number
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