puppeteer/website/versioned_docs/version-10.0.0/puppeteer.puppeteer.md
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Co-authored-by: Jack Franklin <jacktfranklin@chromium.org>
2021-08-09 09:57:14 +01:00

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<!-- Do not edit this file. It is automatically generated by API Documenter. -->
[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [Puppeteer](./puppeteer.puppeteer.md)
## Puppeteer class
The main Puppeteer class.
IMPORTANT: if you are using Puppeteer in a Node environment, you will get an instance of [PuppeteerNode](./puppeteer.puppeteernode.md) when you import or require `puppeteer`. That class extends `Puppeteer`, so has all the methods documented below as well as all that are defined on [PuppeteerNode](./puppeteer.puppeteernode.md).
<b>Signature:</b>
```typescript
export declare class Puppeteer
```
## Remarks
The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `Puppeteer` class.
## Properties
| Property | Modifiers | Type | Description |
| --- | --- | --- | --- |
| [\_changedProduct](./puppeteer.puppeteer._changedproduct.md) | | boolean | |
| [\_isPuppeteerCore](./puppeteer.puppeteer._ispuppeteercore.md) | | boolean | |
| [devices](./puppeteer.puppeteer.devices.md) | | [DevicesMap](./puppeteer.devicesmap.md) | |
| [errors](./puppeteer.puppeteer.errors.md) | | [PuppeteerErrors](./puppeteer.puppeteererrors.md) | |
| [networkConditions](./puppeteer.puppeteer.networkconditions.md) | | [PredefinedNetworkConditions](./puppeteer.predefinednetworkconditions.md) | |
## Methods
| Method | Modifiers | Description |
| --- | --- | --- |
| [clearCustomQueryHandlers()](./puppeteer.puppeteer.clearcustomqueryhandlers.md) | | Clears all registered handlers. |
| [connect(options)](./puppeteer.puppeteer.connect.md) | | This method attaches Puppeteer to an existing browser instance. |
| [customQueryHandlerNames()](./puppeteer.puppeteer.customqueryhandlernames.md) | | |
| [registerCustomQueryHandler(name, queryHandler)](./puppeteer.puppeteer.registercustomqueryhandler.md) | | Registers a [custom query handler](./puppeteer.customqueryhandler.md). After registration, the handler can be used everywhere where a selector is expected by prepending the selection string with <code>&lt;name&gt;/</code>. The name is only allowed to consist of lower- and upper case latin letters. |
| [unregisterCustomQueryHandler(name)](./puppeteer.puppeteer.unregistercustomqueryhandler.md) | | |