chore(main): release 15.3.0 (#8606)

* chore(main): release 15.3.0

* chore: generate versioned docs

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
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{
".": "15.2.0"
".": "15.3.0"
}

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All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
## [15.3.0](https://github.com/puppeteer/puppeteer/compare/v15.2.0...v15.3.0) (2022-07-01)
### Features
* add documentation ([#8593](https://github.com/puppeteer/puppeteer/issues/8593)) ([066f440](https://github.com/puppeteer/puppeteer/commit/066f440ba7bdc9aca9423d7205adf36f2858bd78))
### Bug Fixes
* remove unused imports ([#8613](https://github.com/puppeteer/puppeteer/issues/8613)) ([0cf4832](https://github.com/puppeteer/puppeteer/commit/0cf4832878731ffcfc84570315f326eb851d7629))
## [15.2.0](https://github.com/puppeteer/puppeteer/compare/v15.1.1...v15.2.0) (2022-06-29)

6
package-lock.json generated
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{
"name": "puppeteer",
"version": "15.2.0",
"version": "15.3.0",
"lockfileVersion": 2,
"requires": true,
"packages": {
"": {
"name": "puppeteer",
"version": "15.2.0",
"version": "15.3.0",
"hasInstallScript": true,
"license": "Apache-2.0",
"dependencies": {
@ -57,7 +57,7 @@
"eslint-plugin-mocha": "10.0.5",
"eslint-plugin-prettier": "4.0.0",
"eslint-plugin-tsdoc": "0.2.16",
"eslint-plugin-unused-imports": "^2.0.0",
"eslint-plugin-unused-imports": "2.0.0",
"esprima": "4.0.1",
"expect": "25.2.7",
"gts": "3.1.0",

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{
"name": "puppeteer",
"version": "15.2.0",
"version": "15.3.0",
"description": "A high-level API to control headless Chrome over the DevTools Protocol",
"keywords": [
"puppeteer",

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/**
* @internal
*/
export const packageVersion = '15.2.0';
export const packageVersion = '15.3.0';

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---
sidebar_label: API
---
# API Reference
## Classes
| Class | Description |
| --------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [Accessibility](./puppeteer.accessibility.md) | The Accessibility class provides methods for inspecting Chromium's accessibility tree. The accessibility tree is used by assistive technology such as [screen readers](https://en.wikipedia.org/wiki/Screen_reader) or [switches](https://en.wikipedia.org/wiki/Switch_access). |
| [Browser](./puppeteer.browser.md) | A Browser is created when Puppeteer connects to a Chromium instance, either through [PuppeteerNode.launch()](./puppeteer.puppeteernode.launch.md) or [Puppeteer.connect()](./puppeteer.puppeteer.connect.md). |
| [BrowserContext](./puppeteer.browsercontext.md) | BrowserContexts provide a way to operate multiple independent browser sessions. When a browser is launched, it has a single BrowserContext used by default. The method [Browser.newPage](./puppeteer.browser.newpage.md) creates a page in the default browser context. |
| [BrowserFetcher](./puppeteer.browserfetcher.md) | BrowserFetcher can download and manage different versions of Chromium and Firefox. |
| [CDPSession](./puppeteer.cdpsession.md) | The <code>CDPSession</code> instances are used to talk raw Chrome Devtools Protocol. |
| [Connection](./puppeteer.connection.md) | |
| [ConsoleMessage](./puppeteer.consolemessage.md) | ConsoleMessage objects are dispatched by page via the 'console' event. |
| [Coverage](./puppeteer.coverage.md) | The Coverage class provides methods to gathers information about parts of JavaScript and CSS that were used by the page. |
| [CSSCoverage](./puppeteer.csscoverage.md) | |
| [CustomError](./puppeteer.customerror.md) | |
| [Dialog](./puppeteer.dialog.md) | Dialog instances are dispatched by the [Page](./puppeteer.page.md) via the <code>dialog</code> event. |
| [ElementHandle](./puppeteer.elementhandle.md) | ElementHandle represents an in-page DOM element. |
| [EventEmitter](./puppeteer.eventemitter.md) | The EventEmitter class that many Puppeteer classes extend. |
| [ExecutionContext](./puppeteer.executioncontext.md) | <p>This class represents a context for JavaScript execution. A \[Page\] might have many execution contexts: - each [frame](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/iframe) has "default" execution context that is always created after frame is attached to DOM. This context is returned by the [Frame.executionContext()](./puppeteer.frame.executioncontext.md) method. - [Extension](https://developer.chrome.com/extensions)'s content scripts create additional execution contexts.</p><p>Besides pages, execution contexts can be found in [workers](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API).</p> |
| [FileChooser](./puppeteer.filechooser.md) | File choosers let you react to the page requesting for a file. |
| [Frame](./puppeteer.frame.md) | At every point of time, page exposes its current frame tree via the [page.mainFrame](./puppeteer.page.mainframe.md) and [frame.childFrames](./puppeteer.frame.childframes.md) methods. |
| [HTTPRequest](./puppeteer.httprequest.md) | Represents an HTTP request sent by a page. |
| [HTTPResponse](./puppeteer.httpresponse.md) | The HTTPResponse class represents responses which are received by the [Page](./puppeteer.page.md) class. |
| [JSCoverage](./puppeteer.jscoverage.md) | |
| [JSHandle](./puppeteer.jshandle.md) | Represents an in-page JavaScript object. JSHandles can be created with the [page.evaluateHandle](./puppeteer.page.evaluatehandle.md) method. |
| [Keyboard](./puppeteer.keyboard.md) | Keyboard provides an api for managing a virtual keyboard. The high level api is [Keyboard.type()](./puppeteer.keyboard.type.md), which takes raw characters and generates proper keydown, keypress/input, and keyup events on your page. |
| [Mouse](./puppeteer.mouse.md) | The Mouse class operates in main-frame CSS pixels relative to the top-left corner of the viewport. |
| [Page](./puppeteer.page.md) | <p>Page provides methods to interact with a single tab or [extension background page](https://developer.chrome.com/extensions/background_pages) in Chromium.</p><p>:::note</p><p>One Browser instance might have multiple Page instances.</p><p>:::</p> |
| [ProtocolError](./puppeteer.protocolerror.md) | ProtocolError is emitted whenever there is an error from the protocol. |
| [Puppeteer](./puppeteer.puppeteer.md) | <p>The main Puppeteer class.</p><p>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 <code>puppeteer</code>. That class extends <code>Puppeteer</code>, so has all the methods documented below as well as all that are defined on [PuppeteerNode](./puppeteer.puppeteernode.md).</p> |
| [PuppeteerNode](./puppeteer.puppeteernode.md) | <p>Extends the main [Puppeteer](./puppeteer.puppeteer.md) class with Node specific behaviour for fetching and downloading browsers.</p><p>If you're using Puppeteer in a Node environment, this is the class you'll get when you run <code>require('puppeteer')</code> (or the equivalent ES <code>import</code>).</p> |
| [SecurityDetails](./puppeteer.securitydetails.md) | The SecurityDetails class represents the security details of a response that was received over a secure connection. |
| [Target](./puppeteer.target.md) | |
| [TimeoutError](./puppeteer.timeouterror.md) | TimeoutError is emitted whenever certain operations are terminated due to timeout. |
| [Touchscreen](./puppeteer.touchscreen.md) | The Touchscreen class exposes touchscreen events. |
| [Tracing](./puppeteer.tracing.md) | The Tracing class exposes the tracing audit interface. |
| [WebWorker](./puppeteer.webworker.md) | The WebWorker class represents a [WebWorker](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API). |
## Enumerations
| Enumeration | Description |
| ------------------------------------------------------------------------- | --------------------------------------------------------------------- |
| [BrowserContextEmittedEvents](./puppeteer.browsercontextemittedevents.md) | |
| [BrowserEmittedEvents](./puppeteer.browseremittedevents.md) | All the events a [browser instance](./puppeteer.browser.md) may emit. |
| [InterceptResolutionAction](./puppeteer.interceptresolutionaction.md) | |
| [PageEmittedEvents](./puppeteer.pageemittedevents.md) | All the events that a page instance may emit. |
## Functions
| Function | Description |
| -------------------------------------------------------------------------------------- | ---------------------------------------------------------------------- |
| [clearCustomQueryHandlers()](./puppeteer.clearcustomqueryhandlers.md) | Clears all registered handlers. |
| [customQueryHandlerNames()](./puppeteer.customqueryhandlernames.md) | |
| [registerCustomQueryHandler(name, handler)](./puppeteer.registercustomqueryhandler.md) | Registers a [custom query handler](./puppeteer.customqueryhandler.md). |
| [unregisterCustomQueryHandler(name)](./puppeteer.unregistercustomqueryhandler.md) | |
## Interfaces
| Interface | Description |
| --------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [BoundingBox](./puppeteer.boundingbox.md) | |
| [BoxModel](./puppeteer.boxmodel.md) | |
| [BrowserConnectOptions](./puppeteer.browserconnectoptions.md) | Generic browser options that can be passed when launching any browser or when connecting to an existing browser instance. |
| [BrowserContextOptions](./puppeteer.browsercontextoptions.md) | BrowserContext options. |
| [BrowserFetcherOptions](./puppeteer.browserfetcheroptions.md) | |
| [BrowserFetcherRevisionInfo](./puppeteer.browserfetcherrevisioninfo.md) | |
| [BrowserLaunchArgumentOptions](./puppeteer.browserlaunchargumentoptions.md) | Launcher options that only apply to Chrome. |
| [CDPSessionOnMessageObject](./puppeteer.cdpsessiononmessageobject.md) | |
| [ClickOptions](./puppeteer.clickoptions.md) | |
| [CommonEventEmitter](./puppeteer.commoneventemitter.md) | |
| [ConnectionCallback](./puppeteer.connectioncallback.md) | |
| [ConnectionTransport](./puppeteer.connectiontransport.md) | |
| [ConnectOptions](./puppeteer.connectoptions.md) | |
| [ConsoleMessageLocation](./puppeteer.consolemessagelocation.md) | |
| [ContinueRequestOverrides](./puppeteer.continuerequestoverrides.md) | |
| [CoverageEntry](./puppeteer.coverageentry.md) | The CoverageEntry class represents one entry of the coverage report. |
| [Credentials](./puppeteer.credentials.md) | |
| [CSSCoverageOptions](./puppeteer.csscoverageoptions.md) | Set of configurable options for CSS coverage. |
| [CustomQueryHandler](./puppeteer.customqueryhandler.md) | Contains two functions <code>queryOne</code> and <code>queryAll</code> that can be [registered](./puppeteer.registercustomqueryhandler.md) as alternative querying strategies. The functions <code>queryOne</code> and <code>queryAll</code> are executed in the page context. <code>queryOne</code> should take an <code>Element</code> and a selector string as argument and return a single <code>Element</code> or <code>null</code> if no element is found. <code>queryAll</code> takes the same arguments but should instead return a <code>NodeListOf&lt;Element&gt;</code> or <code>Array&lt;Element&gt;</code> with all the elements that match the given query selector. |
| [Device](./puppeteer.device.md) | |
| [FrameAddScriptTagOptions](./puppeteer.frameaddscripttagoptions.md) | |
| [FrameAddStyleTagOptions](./puppeteer.frameaddstyletagoptions.md) | |
| [FrameWaitForFunctionOptions](./puppeteer.framewaitforfunctionoptions.md) | |
| [GeolocationOptions](./puppeteer.geolocationoptions.md) | |
| [InterceptResolutionState](./puppeteer.interceptresolutionstate.md) | |
| [InternalNetworkConditions](./puppeteer.internalnetworkconditions.md) | |
| [JSCoverageEntry](./puppeteer.jscoverageentry.md) | The CoverageEntry class for JavaScript |
| [JSCoverageOptions](./puppeteer.jscoverageoptions.md) | Set of configurable options for JS coverage. |
| [LaunchOptions](./puppeteer.launchoptions.md) | Generic launch options that can be passed when launching any browser. |
| [MediaFeature](./puppeteer.mediafeature.md) | |
| [Metrics](./puppeteer.metrics.md) | |
| [MouseOptions](./puppeteer.mouseoptions.md) | |
| [MouseWheelOptions](./puppeteer.mousewheeloptions.md) | |
| [NetworkConditions](./puppeteer.networkconditions.md) | |
| [Offset](./puppeteer.offset.md) | |
| [PageEventObject](./puppeteer.pageeventobject.md) | <p>Denotes the objects received by callback functions for page events.</p><p>See [PageEmittedEvents](./puppeteer.pageemittedevents.md) for more detail on the events and when they are emitted.</p> |
| [PDFMargin](./puppeteer.pdfmargin.md) | |
| [PDFOptions](./puppeteer.pdfoptions.md) | Valid options to configure PDF generation via [Page.pdf()](./puppeteer.page.pdf.md). |
| [Point](./puppeteer.point.md) | |
| [PressOptions](./puppeteer.pressoptions.md) | |
| [ProductLauncher](./puppeteer.productlauncher.md) | Describes a launcher - a class that is able to create and launch a browser instance. |
| [PuppeteerErrors](./puppeteer.puppeteererrors.md) | |
| [PuppeteerLaunchOptions](./puppeteer.puppeteerlaunchoptions.md) | |
| [RemoteAddress](./puppeteer.remoteaddress.md) | |
| [ResponseForRequest](./puppeteer.responseforrequest.md) | Required response data to fulfill a request with. |
| [ScreenshotClip](./puppeteer.screenshotclip.md) | |
| [ScreenshotOptions](./puppeteer.screenshotoptions.md) | |
| [SerializedAXNode](./puppeteer.serializedaxnode.md) | Represents a Node and the properties of it that are relevant to Accessibility. |
| [SnapshotOptions](./puppeteer.snapshotoptions.md) | |
| [TracingOptions](./puppeteer.tracingoptions.md) | |
| [Viewport](./puppeteer.viewport.md) | Sets the viewport of the page. |
| [WaitForOptions](./puppeteer.waitforoptions.md) | |
| [WaitForSelectorOptions](./puppeteer.waitforselectoroptions.md) | |
| [WaitForTargetOptions](./puppeteer.waitfortargetoptions.md) | |
| [WaitTimeoutOptions](./puppeteer.waittimeoutoptions.md) | |
## Variables
| Variable | Description |
| --------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [connect](./puppeteer.connect.md) | |
| [createBrowserFetcher](./puppeteer.createbrowserfetcher.md) | |
| [DEFAULT_INTERCEPT_RESOLUTION_PRIORITY](./puppeteer.default_intercept_resolution_priority.md) | The default cooperative request interception resolution priority |
| [defaultArgs](./puppeteer.defaultargs.md) | |
| [devices](./puppeteer.devices.md) | A list of devices to be used with <code>page.emulate(options)</code>. Actual list of devices can be found in [src/common/DeviceDescriptors.ts](https://github.com/puppeteer/puppeteer/blob/main/src/common/DeviceDescriptors.ts). |
| [errors](./puppeteer.errors.md) | <p>Puppeteer methods might throw errors if they are unable to fulfill a request. For example, <code>page.waitForSelector(selector[, options])</code> might fail if the selector doesn't match any nodes during the given timeframe.</p><p>For certain types of errors Puppeteer uses specific error classes. These classes are available via <code>puppeteer.errors</code>.</p> |
| [EVALUATION_SCRIPT_URL](./puppeteer.evaluation_script_url.md) | |
| [executablePath](./puppeteer.executablepath.md) | |
| [launch](./puppeteer.launch.md) | |
| [networkConditions](./puppeteer.networkconditions.md) | A list of network conditions to be used with <code>page.emulateNetworkConditions(networkConditions)</code>. Actual list of predefined conditions can be found in [src/common/NetworkConditions.ts](https://github.com/puppeteer/puppeteer/blob/main/src/common/NetworkConditions.ts). |
## Type Aliases
| Type Alias | Description |
| ------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [ActionResult](./puppeteer.actionresult.md) | |
| [Awaitable](./puppeteer.awaitable.md) | |
| [ChromeReleaseChannel](./puppeteer.chromereleasechannel.md) | |
| [ConsoleMessageType](./puppeteer.consolemessagetype.md) | The supported types for console messages. |
| [DevicesMap](./puppeteer.devicesmap.md) | |
| [ErrorCode](./puppeteer.errorcode.md) | |
| [EvaluateFunc](./puppeteer.evaluatefunc.md) | |
| [EventType](./puppeteer.eventtype.md) | |
| [FlattenHandle](./puppeteer.flattenhandle.md) | |
| [HandleFor](./puppeteer.handlefor.md) | |
| [HandleOr](./puppeteer.handleor.md) | |
| [Handler](./puppeteer.handler.md) | |
| [InnerParams](./puppeteer.innerparams.md) | |
| [InterceptResolutionStrategy](./puppeteer.interceptresolutionstrategy.md) | |
| [KeyInput](./puppeteer.keyinput.md) | All the valid keys that can be passed to functions that take user input, such as [keyboard.press](./puppeteer.keyboard.press.md) |
| [LowerCasePaperFormat](./puppeteer.lowercasepaperformat.md) | |
| [MouseButton](./puppeteer.mousebutton.md) | |
| [PaperFormat](./puppeteer.paperformat.md) | All the valid paper format types when printing a PDF. |
| [Permission](./puppeteer.permission.md) | |
| [Platform](./puppeteer.platform.md) | Supported platforms. |
| [Product](./puppeteer.product.md) | Supported products. |
| [ProtocolLifeCycleEvent](./puppeteer.protocollifecycleevent.md) | |
| [PuppeteerLifeCycleEvent](./puppeteer.puppeteerlifecycleevent.md) | |
| [PuppeteerNodeLaunchOptions](./puppeteer.puppeteernodelaunchoptions.md) | Utility type exposed to enable users to define options that can be passed to <code>puppeteer.launch</code> without having to list the set of all types. |
| [ResourceType](./puppeteer.resourcetype.md) | Resource types for HTTPRequests as perceived by the rendering engine. |
| [TargetFilterCallback](./puppeteer.targetfiltercallback.md) | |

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---
sidebar_label: Accessibility
---
# Accessibility class
The Accessibility class provides methods for inspecting Chromium's accessibility tree. The accessibility tree is used by assistive technology such as [screen readers](https://en.wikipedia.org/wiki/Screen_reader) or [switches](https://en.wikipedia.org/wiki/Switch_access).
**Signature:**
```typescript
export declare class Accessibility
```
## Remarks
Accessibility is a very platform-specific thing. On different platforms, there are different screen readers that might have wildly different output.
Blink - Chrome's rendering engine - has a concept of "accessibility tree", which is then translated into different platform-specific APIs. Accessibility namespace gives users access to the Blink Accessibility Tree.
Most of the accessibility tree gets filtered out when converting from Blink AX Tree to Platform-specific AX-Tree or by assistive technologies themselves. By default, Puppeteer tries to approximate this filtering, exposing only the "interesting" nodes of the tree.
The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `Accessibility` class.
## Methods
| Method | Modifiers | Description |
| ---------------------------------------------------------- | --------- | -------------------------------------------------------------------------------------------------------------------------- |
| [snapshot(options)](./puppeteer.accessibility.snapshot.md) | | Captures the current state of the accessibility tree. The returned object represents the root accessible node of the page. |

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---
sidebar_label: Accessibility.snapshot
---
# Accessibility.snapshot() method
Captures the current state of the accessibility tree. The returned object represents the root accessible node of the page.
**Signature:**
```typescript
class Accessibility {
snapshot(options?: SnapshotOptions): Promise<SerializedAXNode | null>;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | ------------------------------------------------- | ----------------- |
| options | [SnapshotOptions](./puppeteer.snapshotoptions.md) | <i>(Optional)</i> |
**Returns:**
Promise&lt;[SerializedAXNode](./puppeteer.serializedaxnode.md) \| null&gt;
An AXNode object representing the snapshot.
## Remarks
\*\*NOTE\*\* The Chromium accessibility tree contains nodes that go unused on most platforms and by most screen readers. Puppeteer will discard them as well for an easier to process tree, unless `interestingOnly` is set to `false`.
## Example 1
An example of dumping the entire accessibility tree:
```ts
const snapshot = await page.accessibility.snapshot();
console.log(snapshot);
```
## Example 2
An example of logging the focused node's name:
```ts
const snapshot = await page.accessibility.snapshot();
const node = findFocusedNode(snapshot);
console.log(node && node.name);
function findFocusedNode(node) {
if (node.focused) return node;
for (const child of node.children || []) {
const foundNode = findFocusedNode(child);
return foundNode;
}
return null;
}
```

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---
sidebar_label: ActionResult
---
# ActionResult type
**Signature:**
```typescript
export declare type ActionResult = 'continue' | 'abort' | 'respond';
```

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---
sidebar_label: Awaitable
---
# Awaitable type
**Signature:**
```typescript
export declare type Awaitable<T> = T | PromiseLike<T>;
```

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---
sidebar_label: BoundingBox.height
---
# BoundingBox.height property
the height of the element in pixels.
**Signature:**
```typescript
interface BoundingBox {
height: number;
}
```

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---
sidebar_label: BoundingBox
---
# BoundingBox interface
**Signature:**
```typescript
export interface BoundingBox extends Point
```
**Extends:** [Point](./puppeteer.point.md)
## Properties
| Property | Modifiers | Type | Description |
| ------------------------------------------- | --------- | ------ | ------------------------------------ |
| [height](./puppeteer.boundingbox.height.md) | | number | the height of the element in pixels. |
| [width](./puppeteer.boundingbox.width.md) | | number | the width of the element in pixels. |

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---
sidebar_label: BoundingBox.width
---
# BoundingBox.width property
the width of the element in pixels.
**Signature:**
```typescript
interface BoundingBox {
width: number;
}
```

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---
sidebar_label: BoxModel.border
---
# BoxModel.border property
**Signature:**
```typescript
interface BoxModel {
border: Point[];
}
```

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---
sidebar_label: BoxModel.content
---
# BoxModel.content property
**Signature:**
```typescript
interface BoxModel {
content: Point[];
}
```

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---
sidebar_label: BoxModel.height
---
# BoxModel.height property
**Signature:**
```typescript
interface BoxModel {
height: number;
}
```

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---
sidebar_label: BoxModel.margin
---
# BoxModel.margin property
**Signature:**
```typescript
interface BoxModel {
margin: Point[];
}
```

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---
sidebar_label: BoxModel
---
# BoxModel interface
**Signature:**
```typescript
export interface BoxModel
```
## Properties
| Property | Modifiers | Type | Description |
| ------------------------------------------ | --------- | --------------------------------- | ----------- |
| [border](./puppeteer.boxmodel.border.md) | | [Point](./puppeteer.point.md)\[\] | |
| [content](./puppeteer.boxmodel.content.md) | | [Point](./puppeteer.point.md)\[\] | |
| [height](./puppeteer.boxmodel.height.md) | | number | |
| [margin](./puppeteer.boxmodel.margin.md) | | [Point](./puppeteer.point.md)\[\] | |
| [padding](./puppeteer.boxmodel.padding.md) | | [Point](./puppeteer.point.md)\[\] | |
| [width](./puppeteer.boxmodel.width.md) | | number | |

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---
sidebar_label: BoxModel.padding
---
# BoxModel.padding property
**Signature:**
```typescript
interface BoxModel {
padding: Point[];
}
```

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---
sidebar_label: BoxModel.width
---
# BoxModel.width property
**Signature:**
```typescript
interface BoxModel {
width: number;
}
```

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---
sidebar_label: Browser.browserContexts
---
# Browser.browserContexts() method
Returns an array of all open browser contexts. In a newly created browser, this will return a single instance of [BrowserContext](./puppeteer.browsercontext.md).
**Signature:**
```typescript
class Browser {
browserContexts(): BrowserContext[];
}
```
**Returns:**
[BrowserContext](./puppeteer.browsercontext.md)\[\]

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---
sidebar_label: Browser.close
---
# Browser.close() method
Closes Chromium and all of its pages (if any were opened). The [Browser](./puppeteer.browser.md) object itself is considered to be disposed and cannot be used anymore.
**Signature:**
```typescript
class Browser {
close(): Promise<void>;
}
```
**Returns:**
Promise&lt;void&gt;

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---
sidebar_label: Browser.createIncognitoBrowserContext
---
# Browser.createIncognitoBrowserContext() method
Creates a new incognito browser context. This won't share cookies/cache with other browser contexts.
**Signature:**
```typescript
class Browser {
createIncognitoBrowserContext(
options?: BrowserContextOptions
): Promise<BrowserContext>;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | ------------------------------------------------------------- | ----------------- |
| options | [BrowserContextOptions](./puppeteer.browsercontextoptions.md) | <i>(Optional)</i> |
**Returns:**
Promise&lt;[BrowserContext](./puppeteer.browsercontext.md)&gt;
## Example
```ts
(async () => {
const browser = await puppeteer.launch();
// Create a new incognito browser context.
const context = await browser.createIncognitoBrowserContext();
// Create a new page in a pristine context.
const page = await context.newPage();
// Do stuff
await page.goto('https://example.com');
})();
```

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---
sidebar_label: Browser.defaultBrowserContext
---
# Browser.defaultBrowserContext() method
Returns the default browser context. The default browser context cannot be closed.
**Signature:**
```typescript
class Browser {
defaultBrowserContext(): BrowserContext;
}
```
**Returns:**
[BrowserContext](./puppeteer.browsercontext.md)

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---
sidebar_label: Browser.disconnect
---
# Browser.disconnect() method
Disconnects Puppeteer from the browser, but leaves the Chromium process running. After calling `disconnect`, the [Browser](./puppeteer.browser.md) object is considered disposed and cannot be used anymore.
**Signature:**
```typescript
class Browser {
disconnect(): void;
}
```
**Returns:**
void

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---
sidebar_label: Browser.isConnected
---
# Browser.isConnected() method
Indicates that the browser is connected.
**Signature:**
```typescript
class Browser {
isConnected(): boolean;
}
```
**Returns:**
boolean

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---
sidebar_label: Browser
---
# Browser class
A Browser is created when Puppeteer connects to a Chromium instance, either through [PuppeteerNode.launch()](./puppeteer.puppeteernode.launch.md) or [Puppeteer.connect()](./puppeteer.puppeteer.connect.md).
**Signature:**
```typescript
export declare class Browser extends EventEmitter
```
**Extends:** [EventEmitter](./puppeteer.eventemitter.md)
## Remarks
The Browser class extends from Puppeteer's [EventEmitter](./puppeteer.eventemitter.md) class and will emit various events which are documented in the [BrowserEmittedEvents](./puppeteer.browseremittedevents.md) enum.
The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `Browser` class.
## Example 1
An example of using a [Browser](./puppeteer.browser.md) to create a [Page](./puppeteer.page.md):
```ts
const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch();
const page = await browser.newPage();
await page.goto('https://example.com');
await browser.close();
})();
```
## Example 2
An example of disconnecting from and reconnecting to a [Browser](./puppeteer.browser.md):
```ts
const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch();
// Store the endpoint to be able to reconnect to Chromium
const browserWSEndpoint = browser.wsEndpoint();
// Disconnect puppeteer from Chromium
browser.disconnect();
// Use the endpoint to reestablish a connection
const browser2 = await puppeteer.connect({browserWSEndpoint});
// Close Chromium
await browser2.close();
})();
```
## Methods
| Method | Modifiers | Description |
| ---------------------------------------------------------------------------------------------- | --------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [browserContexts()](./puppeteer.browser.browsercontexts.md) | | Returns an array of all open browser contexts. In a newly created browser, this will return a single instance of [BrowserContext](./puppeteer.browsercontext.md). |
| [close()](./puppeteer.browser.close.md) | | Closes Chromium and all of its pages (if any were opened). The [Browser](./puppeteer.browser.md) object itself is considered to be disposed and cannot be used anymore. |
| [createIncognitoBrowserContext(options)](./puppeteer.browser.createincognitobrowsercontext.md) | | Creates a new incognito browser context. This won't share cookies/cache with other browser contexts. |
| [defaultBrowserContext()](./puppeteer.browser.defaultbrowsercontext.md) | | Returns the default browser context. The default browser context cannot be closed. |
| [disconnect()](./puppeteer.browser.disconnect.md) | | Disconnects Puppeteer from the browser, but leaves the Chromium process running. After calling <code>disconnect</code>, the [Browser](./puppeteer.browser.md) object is considered disposed and cannot be used anymore. |
| [isConnected()](./puppeteer.browser.isconnected.md) | | Indicates that the browser is connected. |
| [newPage()](./puppeteer.browser.newpage.md) | | Promise which resolves to a new [Page](./puppeteer.page.md) object. The Page is created in a default browser context. |
| [pages()](./puppeteer.browser.pages.md) | | An array of all open pages inside the Browser. |
| [process()](./puppeteer.browser.process.md) | | The spawned browser process. Returns <code>null</code> if the browser instance was created with [Puppeteer.connect()](./puppeteer.puppeteer.connect.md). |
| [target()](./puppeteer.browser.target.md) | | The target associated with the browser. |
| [targets()](./puppeteer.browser.targets.md) | | All active targets inside the Browser. In case of multiple browser contexts, returns an array with all the targets in all browser contexts. |
| [userAgent()](./puppeteer.browser.useragent.md) | | The browser's original user agent. Pages can override the browser user agent with [Page.setUserAgent()](./puppeteer.page.setuseragent.md). |
| [version()](./puppeteer.browser.version.md) | | A string representing the browser name and version. |
| [waitForTarget(predicate, options)](./puppeteer.browser.waitfortarget.md) | | Searches for a target in all browser contexts. |
| [wsEndpoint()](./puppeteer.browser.wsendpoint.md) | | The browser websocket endpoint which can be used as an argument to [Puppeteer.connect()](./puppeteer.puppeteer.connect.md). |

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---
sidebar_label: Browser.newPage
---
# Browser.newPage() method
Promise which resolves to a new [Page](./puppeteer.page.md) object. The Page is created in a default browser context.
**Signature:**
```typescript
class Browser {
newPage(): Promise<Page>;
}
```
**Returns:**
Promise&lt;[Page](./puppeteer.page.md)&gt;

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---
sidebar_label: Browser.pages
---
# Browser.pages() method
An array of all open pages inside the Browser.
**Signature:**
```typescript
class Browser {
pages(): Promise<Page[]>;
}
```
**Returns:**
Promise&lt;[Page](./puppeteer.page.md)\[\]&gt;
## Remarks
In case of multiple browser contexts, returns an array with all the pages in all browser contexts. Non-visible pages, such as `"background_page"`, will not be listed here. You can find them using [Target.page()](./puppeteer.target.page.md).

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---
sidebar_label: Browser.process
---
# Browser.process() method
The spawned browser process. Returns `null` if the browser instance was created with [Puppeteer.connect()](./puppeteer.puppeteer.connect.md).
**Signature:**
```typescript
class Browser {
process(): ChildProcess | null;
}
```
**Returns:**
ChildProcess \| null

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---
sidebar_label: Browser.target
---
# Browser.target() method
The target associated with the browser.
**Signature:**
```typescript
class Browser {
target(): Target;
}
```
**Returns:**
[Target](./puppeteer.target.md)

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---
sidebar_label: Browser.targets
---
# Browser.targets() method
All active targets inside the Browser. In case of multiple browser contexts, returns an array with all the targets in all browser contexts.
**Signature:**
```typescript
class Browser {
targets(): Target[];
}
```
**Returns:**
[Target](./puppeteer.target.md)\[\]

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---
sidebar_label: Browser.userAgent
---
# Browser.userAgent() method
The browser's original user agent. Pages can override the browser user agent with [Page.setUserAgent()](./puppeteer.page.setuseragent.md).
**Signature:**
```typescript
class Browser {
userAgent(): Promise<string>;
}
```
**Returns:**
Promise&lt;string&gt;

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---
sidebar_label: Browser.version
---
# Browser.version() method
A string representing the browser name and version.
**Signature:**
```typescript
class Browser {
version(): Promise<string>;
}
```
**Returns:**
Promise&lt;string&gt;
## Remarks
For headless Chromium, this is similar to `HeadlessChrome/61.0.3153.0`. For non-headless, this is similar to `Chrome/61.0.3153.0`.
The format of browser.version() might change with future releases of Chromium.

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---
sidebar_label: Browser.waitForTarget
---
# Browser.waitForTarget() method
Searches for a target in all browser contexts.
**Signature:**
```typescript
class Browser {
waitForTarget(
predicate: (x: Target) => boolean | Promise<boolean>,
options?: WaitForTargetOptions
): Promise<Target>;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | ---------------------------------------------------------------------------- | -------------------------------------- |
| predicate | (x: [Target](./puppeteer.target.md)) =&gt; boolean \| Promise&lt;boolean&gt; | A function to be run for every target. |
| options | [WaitForTargetOptions](./puppeteer.waitfortargetoptions.md) | <i>(Optional)</i> |
**Returns:**
Promise&lt;[Target](./puppeteer.target.md)&gt;
The first target found that matches the `predicate` function.
## Example
An example of finding a target for a page opened via `window.open`:
```ts
await page.evaluate(() => window.open('https://www.example.com/'));
const newWindowTarget = await browser.waitForTarget(
target => target.url() === 'https://www.example.com/'
);
```

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---
sidebar_label: Browser.wsEndpoint
---
# Browser.wsEndpoint() method
The browser websocket endpoint which can be used as an argument to [Puppeteer.connect()](./puppeteer.puppeteer.connect.md).
**Signature:**
```typescript
class Browser {
wsEndpoint(): string;
}
```
**Returns:**
string
The Browser websocket url.
## Remarks
The format is `ws://${host}:${port}/devtools/browser/<id>`.
You can find the `webSocketDebuggerUrl` from `http://${host}:${port}/json/version`. Learn more about the [devtools protocol](https://chromedevtools.github.io/devtools-protocol) and the [browser endpoint](https://chromedevtools.github.io/devtools-protocol/#how-do-i-access-the-browser-target).

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---
sidebar_label: BrowserConnectOptions.defaultViewport
---
# BrowserConnectOptions.defaultViewport property
Sets the viewport for each page.
**Signature:**
```typescript
interface BrowserConnectOptions {
defaultViewport?: Viewport | null;
}
```

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---
sidebar_label: BrowserConnectOptions.ignoreHTTPSErrors
---
# BrowserConnectOptions.ignoreHTTPSErrors property
Whether to ignore HTTPS errors during navigation.
**Signature:**
```typescript
interface BrowserConnectOptions {
ignoreHTTPSErrors?: boolean;
}
```

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---
sidebar_label: BrowserConnectOptions
---
# BrowserConnectOptions interface
Generic browser options that can be passed when launching any browser or when connecting to an existing browser instance.
**Signature:**
```typescript
export interface BrowserConnectOptions
```
## Properties
| Property | Modifiers | Type | Description |
| ---------------------------------------------------------------------------- | --------- | ----------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
| [defaultViewport?](./puppeteer.browserconnectoptions.defaultviewport.md) | | [Viewport](./puppeteer.viewport.md) \| null | <i>(Optional)</i> Sets the viewport for each page. |
| [ignoreHTTPSErrors?](./puppeteer.browserconnectoptions.ignorehttpserrors.md) | | boolean | <i>(Optional)</i> Whether to ignore HTTPS errors during navigation. |
| [slowMo?](./puppeteer.browserconnectoptions.slowmo.md) | | number | <i>(Optional)</i> Slows down Puppeteer operations by the specified amount of milliseconds to aid debugging. |
| [targetFilter?](./puppeteer.browserconnectoptions.targetfilter.md) | | [TargetFilterCallback](./puppeteer.targetfiltercallback.md) | <i>(Optional)</i> Callback to decide if Puppeteer should connect to a given target or not. |

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---
sidebar_label: BrowserConnectOptions.slowMo
---
# BrowserConnectOptions.slowMo property
Slows down Puppeteer operations by the specified amount of milliseconds to aid debugging.
**Signature:**
```typescript
interface BrowserConnectOptions {
slowMo?: number;
}
```

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---
sidebar_label: BrowserConnectOptions.targetFilter
---
# BrowserConnectOptions.targetFilter property
Callback to decide if Puppeteer should connect to a given target or not.
**Signature:**
```typescript
interface BrowserConnectOptions {
targetFilter?: TargetFilterCallback;
}
```

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---
sidebar_label: BrowserContext.browser
---
# BrowserContext.browser() method
The browser this browser context belongs to.
**Signature:**
```typescript
class BrowserContext {
browser(): Browser;
}
```
**Returns:**
[Browser](./puppeteer.browser.md)

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---
sidebar_label: BrowserContext.clearPermissionOverrides
---
# BrowserContext.clearPermissionOverrides() method
Clears all permission overrides for the browser context.
**Signature:**
```typescript
class BrowserContext {
clearPermissionOverrides(): Promise<void>;
}
```
**Returns:**
Promise&lt;void&gt;
## Example
```ts
const context = browser.defaultBrowserContext();
context.overridePermissions('https://example.com', ['clipboard-read']);
// do stuff ..
context.clearPermissionOverrides();
```

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---
sidebar_label: BrowserContext.close
---
# BrowserContext.close() method
Closes the browser context. All the targets that belong to the browser context will be closed.
**Signature:**
```typescript
class BrowserContext {
close(): Promise<void>;
}
```
**Returns:**
Promise&lt;void&gt;
## Remarks
Only incognito browser contexts can be closed.

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---
sidebar_label: BrowserContext.isIncognito
---
# BrowserContext.isIncognito() method
Returns whether BrowserContext is incognito. The default browser context is the only non-incognito browser context.
**Signature:**
```typescript
class BrowserContext {
isIncognito(): boolean;
}
```
**Returns:**
boolean
## Remarks
The default browser context cannot be closed.

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---
sidebar_label: BrowserContext
---
# BrowserContext class
BrowserContexts provide a way to operate multiple independent browser sessions. When a browser is launched, it has a single BrowserContext used by default. The method [Browser.newPage](./puppeteer.browser.newpage.md) creates a page in the default browser context.
**Signature:**
```typescript
export declare class BrowserContext extends EventEmitter
```
**Extends:** [EventEmitter](./puppeteer.eventemitter.md)
## Remarks
The Browser class extends from Puppeteer's [EventEmitter](./puppeteer.eventemitter.md) class and will emit various events which are documented in the [BrowserContextEmittedEvents](./puppeteer.browsercontextemittedevents.md) enum.
If a page opens another page, e.g. with a `window.open` call, the popup will belong to the parent page's browser context.
Puppeteer allows creation of "incognito" browser contexts with [Browser.createIncognitoBrowserContext](./puppeteer.browser.createincognitobrowsercontext.md) method. "Incognito" browser contexts don't write any browsing data to disk.
The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `BrowserContext` class.
## Example
```ts
// Create a new incognito browser context
const context = await browser.createIncognitoBrowserContext();
// Create a new page inside context.
const page = await context.newPage();
// ... do stuff with page ...
await page.goto('https://example.com');
// Dispose context once it's no longer needed.
await context.close();
```
## Methods
| Method | Modifiers | Description |
| --------------------------------------------------------------------------------------------- | --------- | ------------------------------------------------------------------------------------------------------------------- |
| [browser()](./puppeteer.browsercontext.browser.md) | | The browser this browser context belongs to. |
| [clearPermissionOverrides()](./puppeteer.browsercontext.clearpermissionoverrides.md) | | Clears all permission overrides for the browser context. |
| [close()](./puppeteer.browsercontext.close.md) | | Closes the browser context. All the targets that belong to the browser context will be closed. |
| [isIncognito()](./puppeteer.browsercontext.isincognito.md) | | Returns whether BrowserContext is incognito. The default browser context is the only non-incognito browser context. |
| [newPage()](./puppeteer.browsercontext.newpage.md) | | Creates a new page in the browser context. |
| [overridePermissions(origin, permissions)](./puppeteer.browsercontext.overridepermissions.md) | | |
| [pages()](./puppeteer.browsercontext.pages.md) | | An array of all pages inside the browser context. |
| [targets()](./puppeteer.browsercontext.targets.md) | | An array of all active targets inside the browser context. |
| [waitForTarget(predicate, options)](./puppeteer.browsercontext.waitfortarget.md) | | This searches for a target in this specific browser context. |

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---
sidebar_label: BrowserContext.newPage
---
# BrowserContext.newPage() method
Creates a new page in the browser context.
**Signature:**
```typescript
class BrowserContext {
newPage(): Promise<Page>;
}
```
**Returns:**
Promise&lt;[Page](./puppeteer.page.md)&gt;

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---
sidebar_label: BrowserContext.overridePermissions
---
# BrowserContext.overridePermissions() method
**Signature:**
```typescript
class BrowserContext {
overridePermissions(origin: string, permissions: Permission[]): Promise<void>;
}
```
## Parameters
| Parameter | Type | Description |
| ----------- | ------------------------------------------- | -------------------------------------------------------------------------------------------------------- |
| origin | string | The origin to grant permissions to, e.g. "https://example.com". |
| permissions | [Permission](./puppeteer.permission.md)\[\] | An array of permissions to grant. All permissions that are not listed here will be automatically denied. |
**Returns:**
Promise&lt;void&gt;
## Example
```ts
const context = browser.defaultBrowserContext();
await context.overridePermissions('https://html5demos.com', ['geolocation']);
```

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---
sidebar_label: BrowserContext.pages
---
# BrowserContext.pages() method
An array of all pages inside the browser context.
**Signature:**
```typescript
class BrowserContext {
pages(): Promise<Page[]>;
}
```
**Returns:**
Promise&lt;[Page](./puppeteer.page.md)\[\]&gt;
Promise which resolves to an array of all open pages. Non visible pages, such as `"background_page"`, will not be listed here. You can find them using [the target page](./puppeteer.target.page.md).

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---
sidebar_label: BrowserContext.targets
---
# BrowserContext.targets() method
An array of all active targets inside the browser context.
**Signature:**
```typescript
class BrowserContext {
targets(): Target[];
}
```
**Returns:**
[Target](./puppeteer.target.md)\[\]

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---
sidebar_label: BrowserContext.waitForTarget
---
# BrowserContext.waitForTarget() method
This searches for a target in this specific browser context.
**Signature:**
```typescript
class BrowserContext {
waitForTarget(
predicate: (x: Target) => boolean | Promise<boolean>,
options?: {
timeout?: number;
}
): Promise<Target>;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | ---------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| predicate | (x: [Target](./puppeteer.target.md)) =&gt; boolean \| Promise&lt;boolean&gt; | A function to be run for every target |
| options | { timeout?: number; } | <i>(Optional)</i> An object of options. Accepts a timout, which is the maximum wait time in milliseconds. Pass <code>0</code> to disable the timeout. Defaults to 30 seconds. |
**Returns:**
Promise&lt;[Target](./puppeteer.target.md)&gt;
Promise which resolves to the first target found that matches the `predicate` function.
## Example
An example of finding a target for a page opened via `window.open`:
```ts
await page.evaluate(() => window.open('https://www.example.com/'));
const newWindowTarget = await browserContext.waitForTarget(
target => target.url() === 'https://www.example.com/'
);
```

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---
sidebar_label: BrowserContextEmittedEvents
---
# BrowserContextEmittedEvents enum
**Signature:**
```typescript
export declare const enum BrowserContextEmittedEvents
```
## Enumeration Members
| Member | Value | Description |
| --------------- | ---------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| TargetChanged | <code>&quot;targetchanged&quot;</code> | Emitted when the url of a target inside the browser context changes. Contains a [Target](./puppeteer.target.md) instance. |
| TargetCreated | <code>&quot;targetcreated&quot;</code> | <p>Emitted when a target is created within the browser context, for example when a new page is opened by [window.open](https://developer.mozilla.org/en-US/docs/Web/API/Window/open) or by [browserContext.newPage](./puppeteer.browsercontext.newpage.md)</p><p>Contains a [Target](./puppeteer.target.md) instance.</p> |
| TargetDestroyed | <code>&quot;targetdestroyed&quot;</code> | Emitted when a target is destroyed within the browser context, for example when a page is closed. Contains a [Target](./puppeteer.target.md) instance. |

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---
sidebar_label: BrowserContextOptions
---
# BrowserContextOptions interface
BrowserContext options.
**Signature:**
```typescript
export interface BrowserContextOptions
```
## Properties
| Property | Modifiers | Type | Description |
| ------------------------------------------------------------------------ | --------- | ---------- | ---------------------------------------------------------------------------------------------------------------------------------------------- |
| [proxyBypassList?](./puppeteer.browsercontextoptions.proxybypasslist.md) | | string\[\] | <i>(Optional)</i> Bypass the proxy for the given semi-colon-separated list of hosts. |
| [proxyServer?](./puppeteer.browsercontextoptions.proxyserver.md) | | string | <i>(Optional)</i> Proxy server with optional port to use for all requests. Username and password can be set in <code>Page.authenticate</code>. |

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---
sidebar_label: BrowserContextOptions.proxyBypassList
---
# BrowserContextOptions.proxyBypassList property
Bypass the proxy for the given semi-colon-separated list of hosts.
**Signature:**
```typescript
interface BrowserContextOptions {
proxyBypassList?: string[];
}
```

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---
sidebar_label: BrowserContextOptions.proxyServer
---
# BrowserContextOptions.proxyServer property
Proxy server with optional port to use for all requests. Username and password can be set in `Page.authenticate`.
**Signature:**
```typescript
interface BrowserContextOptions {
proxyServer?: string;
}
```

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---
sidebar_label: BrowserEmittedEvents
---
# BrowserEmittedEvents enum
All the events a [browser instance](./puppeteer.browser.md) may emit.
**Signature:**
```typescript
export declare const enum BrowserEmittedEvents
```
## Enumeration Members
| Member | Value | Description |
| --------------- | ---------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Disconnected | <code>&quot;disconnected&quot;</code> | <p>Emitted when Puppeteer gets disconnected from the Chromium instance. This might happen because of one of the following:</p><p>- Chromium is closed or crashed</p><p>- The [browser.disconnect](./puppeteer.browser.disconnect.md) method was called.</p> |
| TargetChanged | <code>&quot;targetchanged&quot;</code> | Emitted when the url of a target changes. Contains a [Target](./puppeteer.target.md) instance. |
| TargetCreated | <code>&quot;targetcreated&quot;</code> | <p>Emitted when a target is created, for example when a new page is opened by [window.open](https://developer.mozilla.org/en-US/docs/Web/API/Window/open) or by [browser.newPage](./puppeteer.browser.newpage.md)</p><p>Contains a [Target](./puppeteer.target.md) instance.</p> |
| TargetDestroyed | <code>&quot;targetdestroyed&quot;</code> | Emitted when a target is destroyed, for example when a page is closed. Contains a [Target](./puppeteer.target.md) instance. |

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---
sidebar_label: BrowserFetcher.canDownload
---
# BrowserFetcher.canDownload() method
Initiates a HEAD request to check if the revision is available.
**Signature:**
```typescript
class BrowserFetcher {
canDownload(revision: string): Promise<boolean>;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | ------ | --------------------------------------- |
| revision | string | The revision to check availability for. |
**Returns:**
Promise&lt;boolean&gt;
A promise that resolves to `true` if the revision could be downloaded from the host.
## Remarks
This method is affected by the current `product`.

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---
sidebar_label: BrowserFetcher.download
---
# BrowserFetcher.download() method
Initiates a GET request to download the revision from the host.
**Signature:**
```typescript
class BrowserFetcher {
download(
revision: string,
progressCallback?: (x: number, y: number) => void
): Promise<BrowserFetcherRevisionInfo | undefined>;
}
```
## Parameters
| Parameter | Type | Description |
| ---------------- | --------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- |
| revision | string | The revision to download. |
| progressCallback | (x: number, y: number) =&gt; void | <i>(Optional)</i> A function that will be called with two arguments: How many bytes have been downloaded and the total number of bytes of the download. |
**Returns:**
Promise&lt;[BrowserFetcherRevisionInfo](./puppeteer.browserfetcherrevisioninfo.md) \| undefined&gt;
A promise with revision information when the revision is downloaded and extracted.
## Remarks
This method is affected by the current `product`.

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sidebar_label: BrowserFetcher.host
---
# BrowserFetcher.host() method
**Signature:**
```typescript
class BrowserFetcher {
host(): string;
}
```
**Returns:**
string
The download host being used.

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---
sidebar_label: BrowserFetcher.localRevisions
---
# BrowserFetcher.localRevisions() method
**Signature:**
```typescript
class BrowserFetcher {
localRevisions(): Promise<string[]>;
}
```
**Returns:**
Promise&lt;string\[\]&gt;
A promise with a list of all revision strings (for the current `product`) available locally on disk.
## Remarks
This method is affected by the current `product`.

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---
sidebar_label: BrowserFetcher
---
# BrowserFetcher class
BrowserFetcher can download and manage different versions of Chromium and Firefox.
**Signature:**
```typescript
export declare class BrowserFetcher
```
## Remarks
BrowserFetcher operates on revision strings that specify a precise version of Chromium, e.g. `"533271"`. Revision strings can be obtained from [omahaproxy.appspot.com](http://omahaproxy.appspot.com/). In the Firefox case, BrowserFetcher downloads Firefox Nightly and operates on version numbers such as `"75"`.
The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `BrowserFetcher` class.
## Example
An example of using BrowserFetcher to download a specific version of Chromium and running Puppeteer against it:
```ts
const browserFetcher = puppeteer.createBrowserFetcher();
const revisionInfo = await browserFetcher.download('533271');
const browser = await puppeteer.launch({
executablePath: revisionInfo.executablePath,
});
```
\*\*NOTE\*\* BrowserFetcher is not designed to work concurrently with other instances of BrowserFetcher that share the same downloads directory.
## Methods
| Method | Modifiers | Description |
| ------------------------------------------------------------------------------ | --------- | --------------------------------------------------------------- |
| [canDownload(revision)](./puppeteer.browserfetcher.candownload.md) | | Initiates a HEAD request to check if the revision is available. |
| [download(revision, progressCallback)](./puppeteer.browserfetcher.download.md) | | Initiates a GET request to download the revision from the host. |
| [host()](./puppeteer.browserfetcher.host.md) | | |
| [localRevisions()](./puppeteer.browserfetcher.localrevisions.md) | | |
| [platform()](./puppeteer.browserfetcher.platform.md) | | |
| [product()](./puppeteer.browserfetcher.product.md) | | |
| [remove(revision)](./puppeteer.browserfetcher.remove.md) | | |
| [revisionInfo(revision)](./puppeteer.browserfetcher.revisioninfo.md) | | |

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sidebar_label: BrowserFetcher.platform
---
# BrowserFetcher.platform() method
**Signature:**
```typescript
class BrowserFetcher {
platform(): Platform;
}
```
**Returns:**
[Platform](./puppeteer.platform.md)
Returns the current `Platform`, which is one of `mac`, `linux`, `win32` or `win64`.

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sidebar_label: BrowserFetcher.product
---
# BrowserFetcher.product() method
**Signature:**
```typescript
class BrowserFetcher {
product(): Product;
}
```
**Returns:**
[Product](./puppeteer.product.md)
Returns the current `Product`, which is one of `chrome` or `firefox`.

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---
sidebar_label: BrowserFetcher.remove
---
# BrowserFetcher.remove() method
**Signature:**
```typescript
class BrowserFetcher {
remove(revision: string): Promise<void>;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | ------ | ---------------------------------------------------------- |
| revision | string | A revision to remove for the current <code>product</code>. |
**Returns:**
Promise&lt;void&gt;
A promise that resolves when the revision has been removes or throws if the revision has not been downloaded.
## Remarks
This method is affected by the current `product`.

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sidebar_label: BrowserFetcher.revisionInfo
---
# BrowserFetcher.revisionInfo() method
**Signature:**
```typescript
class BrowserFetcher {
revisionInfo(revision: string): BrowserFetcherRevisionInfo;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | ------ | ----------------------------- |
| revision | string | The revision to get info for. |
**Returns:**
[BrowserFetcherRevisionInfo](./puppeteer.browserfetcherrevisioninfo.md)
The revision info for the given revision.

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sidebar_label: BrowserFetcherOptions.host
---
# BrowserFetcherOptions.host property
**Signature:**
```typescript
interface BrowserFetcherOptions {
host?: string;
}
```

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---
sidebar_label: BrowserFetcherOptions
---
# BrowserFetcherOptions interface
**Signature:**
```typescript
export interface BrowserFetcherOptions
```
## Properties
| Property | Modifiers | Type | Description |
| ---------------------------------------------------------- | --------- | ----------------------------------- | ----------------- |
| [host?](./puppeteer.browserfetcheroptions.host.md) | | string | <i>(Optional)</i> |
| [path?](./puppeteer.browserfetcheroptions.path.md) | | string | <i>(Optional)</i> |
| [platform?](./puppeteer.browserfetcheroptions.platform.md) | | [Platform](./puppeteer.platform.md) | <i>(Optional)</i> |
| [product?](./puppeteer.browserfetcheroptions.product.md) | | string | <i>(Optional)</i> |

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sidebar_label: BrowserFetcherOptions.path
---
# BrowserFetcherOptions.path property
**Signature:**
```typescript
interface BrowserFetcherOptions {
path?: string;
}
```

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sidebar_label: BrowserFetcherOptions.platform
---
# BrowserFetcherOptions.platform property
**Signature:**
```typescript
interface BrowserFetcherOptions {
platform?: Platform;
}
```

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sidebar_label: BrowserFetcherOptions.product
---
# BrowserFetcherOptions.product property
**Signature:**
```typescript
interface BrowserFetcherOptions {
product?: string;
}
```

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---
sidebar_label: BrowserFetcherRevisionInfo.executablePath
---
# BrowserFetcherRevisionInfo.executablePath property
**Signature:**
```typescript
interface BrowserFetcherRevisionInfo {
executablePath: string;
}
```

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---
sidebar_label: BrowserFetcherRevisionInfo.folderPath
---
# BrowserFetcherRevisionInfo.folderPath property
**Signature:**
```typescript
interface BrowserFetcherRevisionInfo {
folderPath: string;
}
```

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---
sidebar_label: BrowserFetcherRevisionInfo.local
---
# BrowserFetcherRevisionInfo.local property
**Signature:**
```typescript
interface BrowserFetcherRevisionInfo {
local: boolean;
}
```

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---
sidebar_label: BrowserFetcherRevisionInfo
---
# BrowserFetcherRevisionInfo interface
**Signature:**
```typescript
export interface BrowserFetcherRevisionInfo
```
## Properties
| Property | Modifiers | Type | Description |
| -------------------------------------------------------------------------- | --------- | ------- | ----------- |
| [executablePath](./puppeteer.browserfetcherrevisioninfo.executablepath.md) | | string | |
| [folderPath](./puppeteer.browserfetcherrevisioninfo.folderpath.md) | | string | |
| [local](./puppeteer.browserfetcherrevisioninfo.local.md) | | boolean | |
| [product](./puppeteer.browserfetcherrevisioninfo.product.md) | | string | |
| [revision](./puppeteer.browserfetcherrevisioninfo.revision.md) | | string | |
| [url](./puppeteer.browserfetcherrevisioninfo.url.md) | | string | |

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sidebar_label: BrowserFetcherRevisionInfo.product
---
# BrowserFetcherRevisionInfo.product property
**Signature:**
```typescript
interface BrowserFetcherRevisionInfo {
product: string;
}
```

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---
sidebar_label: BrowserFetcherRevisionInfo.revision
---
# BrowserFetcherRevisionInfo.revision property
**Signature:**
```typescript
interface BrowserFetcherRevisionInfo {
revision: string;
}
```

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---
sidebar_label: BrowserFetcherRevisionInfo.url
---
# BrowserFetcherRevisionInfo.url property
**Signature:**
```typescript
interface BrowserFetcherRevisionInfo {
url: string;
}
```

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sidebar_label: BrowserLaunchArgumentOptions.args
---
# BrowserLaunchArgumentOptions.args property
Additional command line arguments to pass to the browser instance.
**Signature:**
```typescript
interface BrowserLaunchArgumentOptions {
args?: string[];
}
```

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sidebar_label: BrowserLaunchArgumentOptions.debuggingPort
---
# BrowserLaunchArgumentOptions.debuggingPort property
**Signature:**
```typescript
interface BrowserLaunchArgumentOptions {
debuggingPort?: number;
}
```

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sidebar_label: BrowserLaunchArgumentOptions.devtools
---
# BrowserLaunchArgumentOptions.devtools property
Whether to auto-open a DevTools panel for each tab. If this is set to `true`, then `headless` will be forced to `false`.
**Signature:**
```typescript
interface BrowserLaunchArgumentOptions {
devtools?: boolean;
}
```

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sidebar_label: BrowserLaunchArgumentOptions.headless
---
# BrowserLaunchArgumentOptions.headless property
Whether to run the browser in headless mode.
**Signature:**
```typescript
interface BrowserLaunchArgumentOptions {
headless?: boolean | 'chrome';
}
```

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---
sidebar_label: BrowserLaunchArgumentOptions
---
# BrowserLaunchArgumentOptions interface
Launcher options that only apply to Chrome.
**Signature:**
```typescript
export interface BrowserLaunchArgumentOptions
```
## Properties
| Property | Modifiers | Type | Description |
| --------------------------------------------------------------------------- | --------- | ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [args?](./puppeteer.browserlaunchargumentoptions.args.md) | | string\[\] | <i>(Optional)</i> Additional command line arguments to pass to the browser instance. |
| [debuggingPort?](./puppeteer.browserlaunchargumentoptions.debuggingport.md) | | number | <i>(Optional)</i> |
| [devtools?](./puppeteer.browserlaunchargumentoptions.devtools.md) | | boolean | <i>(Optional)</i> Whether to auto-open a DevTools panel for each tab. If this is set to <code>true</code>, then <code>headless</code> will be forced to <code>false</code>. |
| [headless?](./puppeteer.browserlaunchargumentoptions.headless.md) | | boolean \| 'chrome' | <i>(Optional)</i> Whether to run the browser in headless mode. |
| [userDataDir?](./puppeteer.browserlaunchargumentoptions.userdatadir.md) | | string | <i>(Optional)</i> Path to a user data directory. [see the Chromium docs](https://chromium.googlesource.com/chromium/src/+/refs/heads/main/docs/user_data_dir.md) for more info. |

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sidebar_label: BrowserLaunchArgumentOptions.userDataDir
---
# BrowserLaunchArgumentOptions.userDataDir property
Path to a user data directory. [see the Chromium docs](https://chromium.googlesource.com/chromium/src/+/refs/heads/main/docs/user_data_dir.md) for more info.
**Signature:**
```typescript
interface BrowserLaunchArgumentOptions {
userDataDir?: string;
}
```

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sidebar_label: CDPSession.connection
---
# CDPSession.connection() method
**Signature:**
```typescript
class CDPSession {
connection(): Connection | undefined;
}
```
**Returns:**
[Connection](./puppeteer.connection.md) \| undefined

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sidebar_label: CDPSession.detach
---
# CDPSession.detach() method
Detaches the cdpSession from the target. Once detached, the cdpSession object won't emit any events and can't be used to send messages.
**Signature:**
```typescript
class CDPSession {
detach(): Promise<void>;
}
```
**Returns:**
Promise&lt;void&gt;

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---
# CDPSession.id() method
Returns the session's id.
**Signature:**
```typescript
class CDPSession {
id(): string;
}
```
**Returns:**
string

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sidebar_label: CDPSession
---
# CDPSession class
The `CDPSession` instances are used to talk raw Chrome Devtools Protocol.
**Signature:**
```typescript
export declare class CDPSession extends EventEmitter
```
**Extends:** [EventEmitter](./puppeteer.eventemitter.md)
## Remarks
Protocol methods can be called with [CDPSession.send()](./puppeteer.cdpsession.send.md) method and protocol events can be subscribed to with `CDPSession.on` method.
Useful links: [DevTools Protocol Viewer](https://chromedevtools.github.io/devtools-protocol/) and [Getting Started with DevTools Protocol](https://github.com/aslushnikov/getting-started-with-cdp/blob/HEAD/README.md).
The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `CDPSession` class.
## Example
```ts
const client = await page.target().createCDPSession();
await client.send('Animation.enable');
client.on('Animation.animationCreated', () =>
console.log('Animation created!')
);
const response = await client.send('Animation.getPlaybackRate');
console.log('playback rate is ' + response.playbackRate);
await client.send('Animation.setPlaybackRate', {
playbackRate: response.playbackRate / 2,
});
```
## Methods
| Method | Modifiers | Description |
| --------------------------------------------------------- | --------- | --------------------------------------------------------------------------------------------------------------------------------------- |
| [connection()](./puppeteer.cdpsession.connection.md) | | |
| [detach()](./puppeteer.cdpsession.detach.md) | | Detaches the cdpSession from the target. Once detached, the cdpSession object won't emit any events and can't be used to send messages. |
| [id()](./puppeteer.cdpsession.id.md) | | Returns the session's id. |
| [send(method, paramArgs)](./puppeteer.cdpsession.send.md) | | |

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sidebar_label: CDPSession.send
---
# CDPSession.send() method
**Signature:**
```typescript
class CDPSession {
send<T extends keyof ProtocolMapping.Commands>(
method: T,
...paramArgs: ProtocolMapping.Commands[T]['paramsType']
): Promise<ProtocolMapping.Commands[T]['returnType']>;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | --------------------------------------------- | ----------- |
| method | T | |
| paramArgs | ProtocolMapping.Commands\[T\]\['paramsType'\] | |
**Returns:**
Promise&lt;ProtocolMapping.Commands\[T\]\['returnType'\]&gt;

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sidebar_label: CDPSessionOnMessageObject.error
---
# CDPSessionOnMessageObject.error property
**Signature:**
```typescript
interface CDPSessionOnMessageObject {
error: {
message: string;
data: any;
code: number;
};
}
```

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---
sidebar_label: CDPSessionOnMessageObject.id
---
# CDPSessionOnMessageObject.id property
**Signature:**
```typescript
interface CDPSessionOnMessageObject {
id?: number;
}
```

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---
sidebar_label: CDPSessionOnMessageObject
---
# CDPSessionOnMessageObject interface
**Signature:**
```typescript
export interface CDPSessionOnMessageObject
```
## Properties
| Property | Modifiers | Type | Description |
| ---------------------------------------------------------- | --------- | --------------------------------------------- | ----------------- |
| [error](./puppeteer.cdpsessiononmessageobject.error.md) | | { message: string; data: any; code: number; } | |
| [id?](./puppeteer.cdpsessiononmessageobject.id.md) | | number | <i>(Optional)</i> |
| [method](./puppeteer.cdpsessiononmessageobject.method.md) | | string | |
| [params](./puppeteer.cdpsessiononmessageobject.params.md) | | Record&lt;string, unknown&gt; | |
| [result?](./puppeteer.cdpsessiononmessageobject.result.md) | | any | <i>(Optional)</i> |

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---
# CDPSessionOnMessageObject.method property
**Signature:**
```typescript
interface CDPSessionOnMessageObject {
method: string;
}
```

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sidebar_label: CDPSessionOnMessageObject.params
---
# CDPSessionOnMessageObject.params property
**Signature:**
```typescript
interface CDPSessionOnMessageObject {
params: Record<string, unknown>;
}
```

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---
sidebar_label: CDPSessionOnMessageObject.result
---
# CDPSessionOnMessageObject.result property
**Signature:**
```typescript
interface CDPSessionOnMessageObject {
result?: any;
}
```

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sidebar_label: ChromeReleaseChannel
---
# ChromeReleaseChannel type
**Signature:**
```typescript
export declare type ChromeReleaseChannel =
| 'chrome'
| 'chrome-beta'
| 'chrome-canary'
| 'chrome-dev';
```

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sidebar_label: clearCustomQueryHandlers
---
# clearCustomQueryHandlers() function
Clears all registered handlers.
**Signature:**
```typescript
export declare function clearCustomQueryHandlers(): void;
```
**Returns:**
void

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sidebar_label: ClickOptions.button
---
# ClickOptions.button property
**Signature:**
```typescript
interface ClickOptions {
button?: MouseButton;
}
```

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---
sidebar_label: ClickOptions.clickCount
---
# ClickOptions.clickCount property
**Signature:**
```typescript
interface ClickOptions {
clickCount?: number;
}
```

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sidebar_label: ClickOptions.delay
---
# ClickOptions.delay property
Time to wait between `mousedown` and `mouseup` in milliseconds.
**Signature:**
```typescript
interface ClickOptions {
delay?: number;
}
```

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---
sidebar_label: ClickOptions
---
# ClickOptions interface
**Signature:**
```typescript
export interface ClickOptions
```
## Properties
| Property | Modifiers | Type | Description |
| ----------------------------------------------------- | --------- | ----------------------------------------- | ------------------------------------------------------------------------------------------------------- |
| [button?](./puppeteer.clickoptions.button.md) | | [MouseButton](./puppeteer.mousebutton.md) | <i>(Optional)</i> |
| [clickCount?](./puppeteer.clickoptions.clickcount.md) | | number | <i>(Optional)</i> |
| [delay?](./puppeteer.clickoptions.delay.md) | | number | <i>(Optional)</i> Time to wait between <code>mousedown</code> and <code>mouseup</code> in milliseconds. |
| [offset?](./puppeteer.clickoptions.offset.md) | | [Offset](./puppeteer.offset.md) | <i>(Optional)</i> Offset for the clickable point relative to the top-left corder of the border box. |

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