puppeteer/website/versioned_docs/version-22.6.2/api/puppeteer.metrics.md

---
sidebar_label: Metrics
---

# Metrics interface

#### Signature:

```typescript
export interface Metrics
```

## Properties

<table><thead><tr><th>

Property

</th><th>

Modifiers

</th><th>

Type

</th><th>

Description

</th><th>

Default

</th></tr></thead>
<tbody><tr><td>

Documents

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

Frames

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

JSEventListeners

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

JSHeapTotalSize

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

JSHeapUsedSize

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

LayoutCount

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

LayoutDuration

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

Nodes

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

RecalcStyleCount

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

RecalcStyleDuration

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

ScriptDuration

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

TaskDuration

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
<tr><td>

Timestamp

</td><td>

`optional`

</td><td>

number

</td><td>

</td><td>

</td></tr>
</tbody></table>