puppeteer/new-docs/puppeteer.puppeteer.md
Jack Franklin e655bb6ca2
chore(agnostification): split up root Puppeteer class (#6504)
The `Puppeteer` class had two concerns:

* connect to an existing browser
* launch a new browser

The first of those concerns is needed in all environments, but the
second is only needed in Node.
https://github.com/puppeteer/puppeteer/pull/6484 landing enabled us to
pull the `Puppeteer` class apart into two:

1. `Puppeteer` which hosts the behaviour for connecting to existing
   browsers.
2. `PuppeteerNode`, which extends `Puppeteer` and also adds the ability
   to launch a new browser.

This is a non-breaking change, because Node users will still get an
instance of a class with all the methods they expect, but it'll be a
`PuppeteerNode` rather than `Puppeteer`. I don't expect this to cause
people any issues.

We also now have new files that are effectively the entry points for
Puppeteer:

* `node.ts`: the main entry point for Puppeteer on Node.
* `web.ts`: the main entry point for Puppeteer on the web.
* `node-puppeteer-core.ts`: for those using puppeteer-core (which only
  exists in Node, not on the web).
2020-10-13 16:19:26 +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) | |
## Methods
| Method | Modifiers | Description |
| --- | --- | --- |
| [\_\_experimental\_clearQueryHandlers()](./puppeteer.puppeteer.__experimental_clearqueryhandlers.md) | | Clears all registered handlers. |
| [\_\_experimental\_customQueryHandlerNames()](./puppeteer.puppeteer.__experimental_customqueryhandlernames.md) | | |
| [\_\_experimental\_registerCustomQueryHandler(name, queryHandler)](./puppeteer.puppeteer.__experimental_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. |
| [\_\_experimental\_unregisterCustomQueryHandler(name)](./puppeteer.puppeteer.__experimental_unregistercustomqueryhandler.md) | | |
| [connect(options)](./puppeteer.puppeteer.connect.md) | | This method attaches Puppeteer to an existing browser instance. |