puppeteer/new-docs/puppeteer.page._emitmetrics.md

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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [Page](./puppeteer.page.md) &gt; [\_emitMetrics](./puppeteer.page._emitmetrics.md)
## Page.\_emitMetrics() method
<b>Signature:</b>
```typescript
_emitMetrics(event: Protocol.Performance.metricsPayload): void;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| event | Protocol.Performance.metricsPayload | |
<b>Returns:</b>
void