chrome-devtools-frontend
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Chrome DevTools UI
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TypeScript
/**
* Copyright 2017 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/// <reference types="node" />
/// <reference types="node" />
import { Protocol } from 'devtools-protocol';
import type { Readable } from 'stream';
import type { Browser } from '../api/Browser.js';
import type { BrowserContext } from '../api/BrowserContext.js';
import { GeolocationOptions, MediaFeature, Metrics, Page, ScreenshotOptions, WaitForOptions, WaitTimeoutOptions } from '../api/Page.js';
import { Accessibility } from './Accessibility.js';
import { CDPSession } from './Connection.js';
import { Coverage } from './Coverage.js';
import { ElementHandle } from './ElementHandle.js';
import { FileChooser } from './FileChooser.js';
import { Frame, FrameAddScriptTagOptions, FrameAddStyleTagOptions, FrameWaitForFunctionOptions } from './Frame.js';
import { HTTPRequest } from './HTTPRequest.js';
import { HTTPResponse } from './HTTPResponse.js';
import { Keyboard, Mouse, MouseButton, Touchscreen } from './Input.js';
import { WaitForSelectorOptions } from './IsolatedWorld.js';
import { JSHandle } from './JSHandle.js';
import { Credentials, NetworkConditions } from './NetworkManager.js';
import { PDFOptions } from './PDFOptions.js';
import { Viewport } from './PuppeteerViewport.js';
import { Target } from './Target.js';
import { TaskQueue } from './TaskQueue.js';
import { Tracing } from './Tracing.js';
import { EvaluateFunc, HandleFor, NodeFor } from './types.js';
import { WebWorker } from './WebWorker.js';
/**
* @internal
*/
export declare class CDPPage extends Page {
#private;
/**
* @internal
*/
static _create(client: CDPSession, target: Target, ignoreHTTPSErrors: boolean, defaultViewport: Viewport | null, screenshotTaskQueue: TaskQueue): Promise<CDPPage>;
/**
* @internal
*/
constructor(client: CDPSession, target: Target, ignoreHTTPSErrors: boolean, screenshotTaskQueue: TaskQueue);
/**
* @returns `true` if drag events are being intercepted, `false` otherwise.
*/
isDragInterceptionEnabled(): boolean;
/**
* @returns `true` if the page has JavaScript enabled, `false` otherwise.
*/
isJavaScriptEnabled(): boolean;
/**
* This method is typically coupled with an action that triggers file
* choosing.
*
* :::caution
*
* This must be called before the file chooser is launched. It will not return
* a currently active file chooser.
*
* :::
*
* @remarks
* In non-headless Chromium, this method results in the native file picker
* dialog `not showing up` for the user.
*
* @example
* The following example clicks a button that issues a file chooser
* and then responds with `/tmp/myfile.pdf` as if a user has selected this file.
*
* ```ts
* const [fileChooser] = await Promise.all([
* page.waitForFileChooser(),
* page.click('#upload-file-button'),
* // some button that triggers file selection
* ]);
* await fileChooser.accept(['/tmp/myfile.pdf']);
* ```
*/
waitForFileChooser(options?: WaitTimeoutOptions): Promise<FileChooser>;
/**
* Sets the page's geolocation.
*
* @remarks
* Consider using {@link BrowserContext.overridePermissions} to grant
* permissions for the page to read its geolocation.
*
* @example
*
* ```ts
* await page.setGeolocation({latitude: 59.95, longitude: 30.31667});
* ```
*/
setGeolocation(options: GeolocationOptions): Promise<void>;
/**
* @returns A target this page was created from.
*/
target(): Target;
/**
* @internal
*/
_client(): CDPSession;
/**
* Get the browser the page belongs to.
*/
browser(): Browser;
/**
* Get the browser context that the page belongs to.
*/
browserContext(): BrowserContext;
/**
* @returns The page's main frame.
*
* @remarks
* Page is guaranteed to have a main frame which persists during navigations.
*/
mainFrame(): Frame;
get keyboard(): Keyboard;
get touchscreen(): Touchscreen;
get coverage(): Coverage;
get tracing(): Tracing;
get accessibility(): Accessibility;
/**
* @returns An array of all frames attached to the page.
*/
frames(): Frame[];
/**
* @returns all of the dedicated {@link
* https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API |
* WebWorkers} associated with the page.
*
* @remarks
* This does not contain ServiceWorkers
*/
workers(): WebWorker[];
/**
* Activating request interception enables {@link HTTPRequest.abort},
* {@link HTTPRequest.continue} and {@link HTTPRequest.respond} methods. This
* provides the capability to modify network requests that are made by a page.
*
* Once request interception is enabled, every request will stall unless it's
* continued, responded or aborted; or completed using the browser cache.
*
* Enabling request interception disables page caching.
*
* See the
* {@link https://pptr.dev/next/guides/request-interception|Request interception guide}
* for more details.
*
* @example
* An example of a naïve request interceptor that aborts all image requests:
*
* ```ts
* const puppeteer = require('puppeteer');
* (async () => {
* const browser = await puppeteer.launch();
* const page = await browser.newPage();
* await page.setRequestInterception(true);
* page.on('request', interceptedRequest => {
* if (
* interceptedRequest.url().endsWith('.png') ||
* interceptedRequest.url().endsWith('.jpg')
* )
* interceptedRequest.abort();
* else interceptedRequest.continue();
* });
* await page.goto('https://example.com');
* await browser.close();
* })();
* ```
*
* @param value - Whether to enable request interception.
*/
setRequestInterception(value: boolean): Promise<void>;
/**
* @param enabled - Whether to enable drag interception.
*
* @remarks
* Activating drag interception enables the `Input.drag`,
* methods This provides the capability to capture drag events emitted
* on the page, which can then be used to simulate drag-and-drop.
*/
setDragInterception(enabled: boolean): Promise<void>;
setOfflineMode(enabled: boolean): Promise<void>;
emulateNetworkConditions(networkConditions: NetworkConditions | null): Promise<void>;
/**
* This setting will change the default maximum navigation time for the
* following methods and related shortcuts:
*
* - {@link Page.goBack | page.goBack(options)}
*
* - {@link Page.goForward | page.goForward(options)}
*
* - {@link Page.goto | page.goto(url,options)}
*
* - {@link Page.reload | page.reload(options)}
*
* - {@link Page.setContent | page.setContent(html,options)}
*
* - {@link Page.waitForNavigation | page.waitForNavigation(options)}
* @param timeout - Maximum navigation time in milliseconds.
*/
setDefaultNavigationTimeout(timeout: number): void;
/**
* @param timeout - Maximum time in milliseconds.
*/
setDefaultTimeout(timeout: number): void;
/**
* @returns Maximum time in milliseconds.
*/
getDefaultTimeout(): number;
/**
* Runs `document.querySelector` within the page. If no element matches the
* selector, the return value resolves to `null`.
*
* @param selector - A `selector` to query page for
* {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | selector}
* to query page for.
*/
$<Selector extends string>(selector: Selector): Promise<ElementHandle<NodeFor<Selector>> | null>;
/**
* The method runs `document.querySelectorAll` within the page. If no elements
* match the selector, the return value resolves to `[]`.
* @remarks
* Shortcut for {@link Frame.$$ | Page.mainFrame().$$(selector) }.
* @param selector - A `selector` to query page for
*/
$$<Selector extends string>(selector: Selector): Promise<Array<ElementHandle<NodeFor<Selector>>>>;
/**
* @remarks
*
* The only difference between {@link Page.evaluate | page.evaluate} and
* `page.evaluateHandle` is that `evaluateHandle` will return the value
* wrapped in an in-page object.
*
* If the function passed to `page.evaluteHandle` returns a Promise, the
* function will wait for the promise to resolve and return its value.
*
* You can pass a string instead of a function (although functions are
* recommended as they are easier to debug and use with TypeScript):
*
* @example
*
* ```ts
* const aHandle = await page.evaluateHandle('document');
* ```
*
* @example
* {@link JSHandle} instances can be passed as arguments to the `pageFunction`:
*
* ```ts
* const aHandle = await page.evaluateHandle(() => document.body);
* const resultHandle = await page.evaluateHandle(
* body => body.innerHTML,
* aHandle
* );
* console.log(await resultHandle.jsonValue());
* await resultHandle.dispose();
* ```
*
* Most of the time this function returns a {@link JSHandle},
* but if `pageFunction` returns a reference to an element,
* you instead get an {@link ElementHandle} back:
*
* @example
*
* ```ts
* const button = await page.evaluateHandle(() =>
* document.querySelector('button')
* );
* // can call `click` because `button` is an `ElementHandle`
* await button.click();
* ```
*
* The TypeScript definitions assume that `evaluateHandle` returns
* a `JSHandle`, but if you know it's going to return an
* `ElementHandle`, pass it as the generic argument:
*
* ```ts
* const button = await page.evaluateHandle<ElementHandle>(...);
* ```
*
* @param pageFunction - a function that is run within the page
* @param args - arguments to be passed to the pageFunction
*/
evaluateHandle<Params extends unknown[], Func extends EvaluateFunc<Params> = EvaluateFunc<Params>>(pageFunction: Func | string, ...args: Params): Promise<HandleFor<Awaited<ReturnType<Func>>>>;
/**
* This method iterates the JavaScript heap and finds all objects with the
* given prototype.
*
* @example
*
* ```ts
* // Create a Map object
* await page.evaluate(() => (window.map = new Map()));
* // Get a handle to the Map object prototype
* const mapPrototype = await page.evaluateHandle(() => Map.prototype);
* // Query all map instances into an array
* const mapInstances = await page.queryObjects(mapPrototype);
* // Count amount of map objects in heap
* const count = await page.evaluate(maps => maps.length, mapInstances);
* await mapInstances.dispose();
* await mapPrototype.dispose();
* ```
*
* @param prototypeHandle - a handle to the object prototype.
* @returns Promise which resolves to a handle to an array of objects with
* this prototype.
*/
queryObjects<Prototype>(prototypeHandle: JSHandle<Prototype>): Promise<JSHandle<Prototype[]>>;
/**
* This method runs `document.querySelector` within the page and passes the
* result as the first argument to the `pageFunction`.
*
* @remarks
*
* If no element is found matching `selector`, the method will throw an error.
*
* If `pageFunction` returns a promise `$eval` will wait for the promise to
* resolve and then return its value.
*
* @example
*
* ```ts
* const searchValue = await page.$eval('#search', el => el.value);
* const preloadHref = await page.$eval('link[rel=preload]', el => el.href);
* const html = await page.$eval('.main-container', el => el.outerHTML);
* ```
*
* If you are using TypeScript, you may have to provide an explicit type to the
* first argument of the `pageFunction`.
* By default it is typed as `Element`, but you may need to provide a more
* specific sub-type:
*
* @example
*
* ```ts
* // if you don't provide HTMLInputElement here, TS will error
* // as `value` is not on `Element`
* const searchValue = await page.$eval(
* '#search',
* (el: HTMLInputElement) => el.value
* );
* ```
*
* The compiler should be able to infer the return type
* from the `pageFunction` you provide. If it is unable to, you can use the generic
* type to tell the compiler what return type you expect from `$eval`:
*
* @example
*
* ```ts
* // The compiler can infer the return type in this case, but if it can't
* // or if you want to be more explicit, provide it as the generic type.
* const searchValue = await page.$eval<string>(
* '#search',
* (el: HTMLInputElement) => el.value
* );
* ```
*
* @param selector - the
* {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | selector}
* to query for
* @param pageFunction - the function to be evaluated in the page context.
* Will be passed the result of `document.querySelector(selector)` as its
* first argument.
* @param args - any additional arguments to pass through to `pageFunction`.
*
* @returns The result of calling `pageFunction`. If it returns an element it
* is wrapped in an {@link ElementHandle}, else the raw value itself is
* returned.
*/
$eval<Selector extends string, Params extends unknown[], Func extends EvaluateFunc<[
ElementHandle<NodeFor<Selector>>,
...Params
]> = EvaluateFunc<[ElementHandle<NodeFor<Selector>>, ...Params]>>(selector: Selector, pageFunction: Func | string, ...args: Params): Promise<Awaited<ReturnType<Func>>>;
/**
* This method runs `Array.from(document.querySelectorAll(selector))` within
* the page and passes the result as the first argument to the `pageFunction`.
*
* @remarks
* If `pageFunction` returns a promise `$$eval` will wait for the promise to
* resolve and then return its value.
*
* @example
*
* ```ts
* // get the amount of divs on the page
* const divCount = await page.$$eval('div', divs => divs.length);
*
* // get the text content of all the `.options` elements:
* const options = await page.$$eval('div > span.options', options => {
* return options.map(option => option.textContent);
* });
* ```
*
* If you are using TypeScript, you may have to provide an explicit type to the
* first argument of the `pageFunction`.
* By default it is typed as `Element[]`, but you may need to provide a more
* specific sub-type:
*
* @example
*
* ```ts
* // if you don't provide HTMLInputElement here, TS will error
* // as `value` is not on `Element`
* await page.$$eval('input', (elements: HTMLInputElement[]) => {
* return elements.map(e => e.value);
* });
* ```
*
* The compiler should be able to infer the return type
* from the `pageFunction` you provide. If it is unable to, you can use the generic
* type to tell the compiler what return type you expect from `$$eval`:
*
* @example
*
* ```ts
* // The compiler can infer the return type in this case, but if it can't
* // or if you want to be more explicit, provide it as the generic type.
* const allInputValues = await page.$$eval<string[]>(
* 'input',
* (elements: HTMLInputElement[]) => elements.map(e => e.textContent)
* );
* ```
*
* @param selector - the
* {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors | selector}
* to query for
* @param pageFunction - the function to be evaluated in the page context.
* Will be passed the result of
* `Array.from(document.querySelectorAll(selector))` as its first argument.
* @param args - any additional arguments to pass through to `pageFunction`.
*
* @returns The result of calling `pageFunction`. If it returns an element it
* is wrapped in an {@link ElementHandle}, else the raw value itself is
* returned.
*/
$$eval<Selector extends string, Params extends unknown[], Func extends EvaluateFunc<[
Array<NodeFor<Selector>>,
...Params
]> = EvaluateFunc<[Array<NodeFor<Selector>>, ...Params]>>(selector: Selector, pageFunction: Func | string, ...args: Params): Promise<Awaited<ReturnType<Func>>>;
/**
* The method evaluates the XPath expression relative to the page document as
* its context node. If there are no such elements, the method resolves to an
* empty array.
*
* @remarks
* Shortcut for {@link Frame.$x | Page.mainFrame().$x(expression) }.
*
* @param expression - Expression to evaluate
*/
$x(expression: string): Promise<Array<ElementHandle<Node>>>;
/**
* If no URLs are specified, this method returns cookies for the current page
* URL. If URLs are specified, only cookies for those URLs are returned.
*/
cookies(...urls: string[]): Promise<Protocol.Network.Cookie[]>;
deleteCookie(...cookies: Protocol.Network.DeleteCookiesRequest[]): Promise<void>;
/**
* @example
*
* ```ts
* await page.setCookie(cookieObject1, cookieObject2);
* ```
*/
setCookie(...cookies: Protocol.Network.CookieParam[]): Promise<void>;
/**
* Adds a `<script>` tag into the page with the desired URL or content.
*
* @remarks
* Shortcut for
* {@link Frame.addScriptTag | page.mainFrame().addScriptTag(options)}.
*
* @param options - Options for the script.
* @returns An {@link ElementHandle | element handle} to the injected
* `<script>` element.
*/
addScriptTag(options: FrameAddScriptTagOptions): Promise<ElementHandle<HTMLScriptElement>>;
/**
* Adds a `<link rel="stylesheet">` tag into the page with the desired URL or
* a `<style type="text/css">` tag with the content.
*
* Shortcut for
* {@link Frame.addStyleTag | page.mainFrame().addStyleTag(options)}.
*
* @returns An {@link ElementHandle | element handle} to the injected `<link>`
* or `<style>` element.
*/
addStyleTag(options: Omit<FrameAddStyleTagOptions, 'url'>): Promise<ElementHandle<HTMLStyleElement>>;
addStyleTag(options: FrameAddStyleTagOptions): Promise<ElementHandle<HTMLLinkElement>>;
/**
* The method adds a function called `name` on the page's `window` object.
* When called, the function executes `puppeteerFunction` in node.js and
* returns a `Promise` which resolves to the return value of
* `puppeteerFunction`.
*
* If the puppeteerFunction returns a `Promise`, it will be awaited.
*
* :::note
*
* Functions installed via `page.exposeFunction` survive navigations.
*
* :::note
*
* @example
* An example of adding an `md5` function into the page:
*
* ```ts
* const puppeteer = require('puppeteer');
* const crypto = require('crypto');
*
* (async () => {
* const browser = await puppeteer.launch();
* const page = await browser.newPage();
* page.on('console', msg => console.log(msg.text()));
* await page.exposeFunction('md5', text =>
* crypto.createHash('md5').update(text).digest('hex')
* );
* await page.evaluate(async () => {
* // use window.md5 to compute hashes
* const myString = 'PUPPETEER';
* const myHash = await window.md5(myString);
* console.log(`md5 of ${myString} is ${myHash}`);
* });
* await browser.close();
* })();
* ```
*
* @example
* An example of adding a `window.readfile` function into the page:
*
* ```ts
* const puppeteer = require('puppeteer');
* const fs = require('fs');
*
* (async () => {
* const browser = await puppeteer.launch();
* const page = await browser.newPage();
* page.on('console', msg => console.log(msg.text()));
* await page.exposeFunction('readfile', async filePath => {
* return new Promise((resolve, reject) => {
* fs.readFile(filePath, 'utf8', (err, text) => {
* if (err) reject(err);
* else resolve(text);
* });
* });
* });
* await page.evaluate(async () => {
* // use window.readfile to read contents of a file
* const content = await window.readfile('/etc/hosts');
* console.log(content);
* });
* await browser.close();
* })();
* ```
*
* @param name - Name of the function on the window object
* @param pptrFunction - Callback function which will be called in Puppeteer's
* context.
*/
exposeFunction(name: string, pptrFunction: Function | {
default: Function;
}): Promise<void>;
/**
* Provide credentials for `HTTP authentication`.
*
* @remarks
* To disable authentication, pass `null`.
*/
authenticate(credentials: Credentials): Promise<void>;
/**
* The extra HTTP headers will be sent with every request the page initiates.
*
* :::tip
*
* All HTTP header names are lowercased. (HTTP headers are
* case-insensitive, so this shouldn’t impact your server code.)
*
* :::
*
* :::note
*
* page.setExtraHTTPHeaders does not guarantee the order of headers in
* the outgoing requests.
*
* :::
*
* @param headers - An object containing additional HTTP headers to be sent
* with every request. All header values must be strings.
*/
setExtraHTTPHeaders(headers: Record<string, string>): Promise<void>;
/**
* @param userAgent - Specific user agent to use in this page
* @param userAgentData - Specific user agent client hint data to use in this
* page
* @returns Promise which resolves when the user agent is set.
*/
setUserAgent(userAgent: string, userAgentMetadata?: Protocol.Emulation.UserAgentMetadata): Promise<void>;
/**
* @returns Object containing metrics as key/value pairs.
*
* - `Timestamp` : The timestamp when the metrics sample was taken.
*
* - `Documents` : Number of documents in the page.
*
* - `Frames` : Number of frames in the page.
*
* - `JSEventListeners` : Number of events in the page.
*
* - `Nodes` : Number of DOM nodes in the page.
*
* - `LayoutCount` : Total number of full or partial page layout.
*
* - `RecalcStyleCount` : Total number of page style recalculations.
*
* - `LayoutDuration` : Combined durations of all page layouts.
*
* - `RecalcStyleDuration` : Combined duration of all page style
* recalculations.
*
* - `ScriptDuration` : Combined duration of JavaScript execution.
*
* - `TaskDuration` : Combined duration of all tasks performed by the browser.
*
* - `JSHeapUsedSize` : Used JavaScript heap size.
*
* - `JSHeapTotalSize` : Total JavaScript heap size.
*
* @remarks
* All timestamps are in monotonic time: monotonically increasing time
* in seconds since an arbitrary point in the past.
*/
metrics(): Promise<Metrics>;
/**
*
* @returns
* @remarks Shortcut for
* {@link Frame.url | page.mainFrame().url()}.
*/
url(): string;
content(): Promise<string>;
/**
* @param html - HTML markup to assign to the page.
* @param options - Parameters that has some properties.
* @remarks
* The parameter `options` might have the following options.
*
* - `timeout` : Maximum time in milliseconds for resources to load, defaults
* to 30 seconds, pass `0` to disable timeout. The default value can be
* changed by using the {@link Page.setDefaultNavigationTimeout} or
* {@link Page.setDefaultTimeout} methods.
*
* - `waitUntil`: When to consider setting markup succeeded, defaults to
* `load`. Given an array of event strings, setting content is considered
* to be successful after all events have been fired. Events can be
* either:<br/>
* - `load` : consider setting content to be finished when the `load` event
* is fired.<br/>
* - `domcontentloaded` : consider setting content to be finished when the
* `DOMContentLoaded` event is fired.<br/>
* - `networkidle0` : consider setting content to be finished when there are
* no more than 0 network connections for at least `500` ms.<br/>
* - `networkidle2` : consider setting content to be finished when there are
* no more than 2 network connections for at least `500` ms.
*/
setContent(html: string, options?: WaitForOptions): Promise<void>;
/**
* @param url - URL to navigate page to. The URL should include scheme, e.g.
* `https://`
* @param options - Navigation Parameter
* @returns Promise which resolves to the main resource response. In case of
* multiple redirects, the navigation will resolve with the response of the
* last redirect.
* @remarks
* The argument `options` might have the following properties:
*
* - `timeout` : Maximum navigation time in milliseconds, defaults to 30
* seconds, pass 0 to disable timeout. The default value can be changed by
* using the {@link Page.setDefaultNavigationTimeout} or
* {@link Page.setDefaultTimeout} methods.
*
* - `waitUntil`:When to consider navigation succeeded, defaults to `load`.
* Given an array of event strings, navigation is considered to be
* successful after all events have been fired. Events can be either:<br/>
* - `load` : consider navigation to be finished when the load event is
* fired.<br/>
* - `domcontentloaded` : consider navigation to be finished when the
* DOMContentLoaded event is fired.<br/>
* - `networkidle0` : consider navigation to be finished when there are no
* more than 0 network connections for at least `500` ms.<br/>
* - `networkidle2` : consider navigation to be finished when there are no
* more than 2 network connections for at least `500` ms.
*
* - `referer` : Referer header value. If provided it will take preference
* over the referer header value set by
* {@link Page.setExtraHTTPHeaders |page.setExtraHTTPHeaders()}.
*
* `page.goto` will throw an error if:
*
* - there's an SSL error (e.g. in case of self-signed certificates).
* - target URL is invalid.
* - the timeout is exceeded during navigation.
* - the remote server does not respond or is unreachable.
* - the main resource failed to load.
*
* `page.goto` will not throw an error when any valid HTTP status code is
* returned by the remote server, including 404 "Not Found" and 500
* "Internal Server Error". The status code for such responses can be
* retrieved by calling response.status().
*
* NOTE: `page.goto` either throws an error or returns a main resource
* response. The only exceptions are navigation to about:blank or navigation
* to the same URL with a different hash, which would succeed and return null.
*
* NOTE: Headless mode doesn't support navigation to a PDF document. See the
* {@link https://bugs.chromium.org/p/chromium/issues/detail?id=761295 |
* upstream issue}.
*
* Shortcut for {@link Frame.goto | page.mainFrame().goto(url, options)}.
*/
goto(url: string, options?: WaitForOptions & {
referer?: string;
}): Promise<HTTPResponse | null>;
/**
* @param options - Navigation parameters which might have the following
* properties:
* @returns Promise which resolves to the main resource response. In case of
* multiple redirects, the navigation will resolve with the response of the
* last redirect.
* @remarks
* The argument `options` might have the following properties:
*
* - `timeout` : Maximum navigation time in milliseconds, defaults to 30
* seconds, pass 0 to disable timeout. The default value can be changed by
* using the {@link Page.setDefaultNavigationTimeout} or
* {@link Page.setDefaultTimeout} methods.
*
* - `waitUntil`: When to consider navigation succeeded, defaults to `load`.
* Given an array of event strings, navigation is considered to be
* successful after all events have been fired. Events can be either:<br/>
* - `load` : consider navigation to be finished when the load event is
* fired.<br/>
* - `domcontentloaded` : consider navigation to be finished when the
* DOMContentLoaded event is fired.<br/>
* - `networkidle0` : consider navigation to be finished when there are no
* more than 0 network connections for at least `500` ms.<br/>
* - `networkidle2` : consider navigation to be finished when there are no
* more than 2 network connections for at least `500` ms.
*/
reload(options?: WaitForOptions): Promise<HTTPResponse | null>;
/**
* Waits for the page to navigate to a new URL or to reload. It is useful when
* you run code that will indirectly cause the page to navigate.
*
* @example
*
* ```ts
* const [response] = await Promise.all([
* page.waitForNavigation(), // The promise resolves after navigation has finished
* page.click('a.my-link'), // Clicking the link will indirectly cause a navigation
* ]);
* ```
*
* @remarks
* Usage of the
* {@link https://developer.mozilla.org/en-US/docs/Web/API/History_API | History API}
* to change the URL is considered a navigation.
*
* @param options - Navigation parameters which might have the following
* properties:
* @returns A `Promise` which resolves to the main resource response.
*
* - In case of multiple redirects, the navigation will resolve with the
* response of the last redirect.
* - In case of navigation to a different anchor or navigation due to History
* API usage, the navigation will resolve with `null`.
*/
waitForNavigation(options?: WaitForOptions): Promise<HTTPResponse | null>;
/**
* @param urlOrPredicate - A URL or predicate to wait for
* @param options - Optional waiting parameters
* @returns Promise which resolves to the matched response
* @example
*
* ```ts
* const firstResponse = await page.waitForResponse(
* 'https://example.com/resource'
* );
* const finalResponse = await page.waitForResponse(
* response =>
* response.url() === 'https://example.com' && response.status() === 200
* );
* const finalResponse = await page.waitForResponse(async response => {
* return (await response.text()).includes('<html>');
* });
* return finalResponse.ok();
* ```
*
* @remarks
* Optional Waiting Parameters have:
*
* - `timeout`: Maximum wait time in milliseconds, defaults to `30` seconds, pass
* `0` to disable the timeout. The default value can be changed by using the
* {@link Page.setDefaultTimeout} method.
*/
waitForRequest(urlOrPredicate: string | ((req: HTTPRequest) => boolean | Promise<boolean>), options?: {
timeout?: number;
}): Promise<HTTPRequest>;
/**
* @param urlOrPredicate - A URL or predicate to wait for.
* @param options - Optional waiting parameters
* @returns Promise which resolves to the matched response.
* @example
*
* ```ts
* const firstResponse = await page.waitForResponse(
* 'https://example.com/resource'
* );
* const finalResponse = await page.waitForResponse(
* response =>
* response.url() === 'https://example.com' && response.status() === 200
* );
* const finalResponse = await page.waitForResponse(async response => {
* return (await response.text()).includes('<html>');
* });
* return finalResponse.ok();
* ```
*
* @remarks
* Optional Parameter have:
*
* - `timeout`: Maximum wait time in milliseconds, defaults to `30` seconds,
* pass `0` to disable the timeout. The default value can be changed by using
* the {@link Page.setDefaultTimeout} method.
*/
waitForResponse(urlOrPredicate: string | ((res: HTTPResponse) => boolean | Promise<boolean>), options?: {
timeout?: number;
}): Promise<HTTPResponse>;
/**
* @param options - Optional waiting parameters
* @returns Promise which resolves when network is idle
*/
waitForNetworkIdle(options?: {
idleTime?: number;
timeout?: number;
}): Promise<void>;
/**
* @param urlOrPredicate - A URL or predicate to wait for.
* @param options - Optional waiting parameters
* @returns Promise which resolves to the matched frame.
* @example
*
* ```ts
* const frame = await page.waitForFrame(async frame => {
* return frame.name() === 'Test';
* });
* ```
*
* @remarks
* Optional Parameter have:
*
* - `timeout`: Maximum wait time in milliseconds, defaults to `30` seconds,
* pass `0` to disable the timeout. The default value can be changed by using
* the {@link Page.setDefaultTimeout} method.
*/
waitForFrame(urlOrPredicate: string | ((frame: Frame) => boolean | Promise<boolean>), options?: {
timeout?: number;
}): Promise<Frame>;
/**
* This method navigate to the previous page in history.
* @param options - Navigation parameters
* @returns Promise which resolves to the main resource response. In case of
* multiple redirects, the navigation will resolve with the response of the
* last redirect. If can not go back, resolves to `null`.
* @remarks
* The argument `options` might have the following properties:
*
* - `timeout` : Maximum navigation time in milliseconds, defaults to 30
* seconds, pass 0 to disable timeout. The default value can be changed by
* using the {@link Page.setDefaultNavigationTimeout} or
* {@link Page.setDefaultTimeout} methods.
*
* - `waitUntil` : When to consider navigation succeeded, defaults to `load`.
* Given an array of event strings, navigation is considered to be
* successful after all events have been fired. Events can be either:<br/>
* - `load` : consider navigation to be finished when the load event is
* fired.<br/>
* - `domcontentloaded` : consider navigation to be finished when the
* DOMContentLoaded event is fired.<br/>
* - `networkidle0` : consider navigation to be finished when there are no
* more than 0 network connections for at least `500` ms.<br/>
* - `networkidle2` : consider navigation to be finished when there are no
* more than 2 network connections for at least `500` ms.
*/
goBack(options?: WaitForOptions): Promise<HTTPResponse | null>;
/**
* This method navigate to the next page in history.
* @param options - Navigation Parameter
* @returns Promise which resolves to the main resource response. In case of
* multiple redirects, the navigation will resolve with the response of the
* last redirect. If can not go forward, resolves to `null`.
* @remarks
* The argument `options` might have the following properties:
*
* - `timeout` : Maximum navigation time in milliseconds, defaults to 30
* seconds, pass 0 to disable timeout. The default value can be changed by
* using the {@link Page.setDefaultNavigationTimeout} or
* {@link Page.setDefaultTimeout} methods.
*
* - `waitUntil`: When to consider navigation succeeded, defaults to `load`.
* Given an array of event strings, navigation is considered to be
* successful after all events have been fired. Events can be either:<br/>
* - `load` : consider navigation to be finished when the load event is
* fired.<br/>
* - `domcontentloaded` : consider navigation to be finished when the
* DOMContentLoaded event is fired.<br/>
* - `networkidle0` : consider navigation to be finished when there are no
* more than 0 network connections for at least `500` ms.<br/>
* - `networkidle2` : consider navigation to be finished when there are no
* more than 2 network connections for at least `500` ms.
*/
goForward(options?: WaitForOptions): Promise<HTTPResponse | null>;
/**
* Brings page to front (activates tab).
*/
bringToFront(): Promise<void>;
/**
* @param enabled - Whether or not to enable JavaScript on the page.
* @returns
* @remarks
* NOTE: changing this value won't affect scripts that have already been run.
* It will take full effect on the next navigation.
*/
setJavaScriptEnabled(enabled: boolean): Promise<void>;
/**
* Toggles bypassing page's Content-Security-Policy.
* @param enabled - sets bypassing of page's Content-Security-Policy.
* @remarks
* NOTE: CSP bypassing happens at the moment of CSP initialization rather than
* evaluation. Usually, this means that `page.setBypassCSP` should be called
* before navigating to the domain.
*/
setBypassCSP(enabled: boolean): Promise<void>;
/**
* @param type - Changes the CSS media type of the page. The only allowed
* values are `screen`, `print` and `null`. Passing `null` disables CSS media
* emulation.
* @example
*
* ```ts
* await page.evaluate(() => matchMedia('screen').matches);
* // → true
* await page.evaluate(() => matchMedia('print').matches);
* // → false
*
* await page.emulateMediaType('print');
* await page.evaluate(() => matchMedia('screen').matches);
* // → false
* await page.evaluate(() => matchMedia('print').matches);
* // → true
*
* await page.emulateMediaType(null);
* await page.evaluate(() => matchMedia('screen').matches);
* // → true
* await page.evaluate(() => matchMedia('print').matches);
* // → false
* ```
*/
emulateMediaType(type?: string): Promise<void>;
/**
* Enables CPU throttling to emulate slow CPUs.
* @param factor - slowdown factor (1 is no throttle, 2 is 2x slowdown, etc).
*/
emulateCPUThrottling(factor: number | null): Promise<void>;
/**
* @param features - `<?Array<Object>>` Given an array of media feature
* objects, emulates CSS media features on the page. Each media feature object
* must have the following properties:
* @example
*
* ```ts
* await page.emulateMediaFeatures([
* {name: 'prefers-color-scheme', value: 'dark'},
* ]);
* await page.evaluate(
* () => matchMedia('(prefers-color-scheme: dark)').matches
* );
* // → true
* await page.evaluate(
* () => matchMedia('(prefers-color-scheme: light)').matches
* );
* // → false
*
* await page.emulateMediaFeatures([
* {name: 'prefers-reduced-motion', value: 'reduce'},
* ]);
* await page.evaluate(
* () => matchMedia('(prefers-reduced-motion: reduce)').matches
* );
* // → true
* await page.evaluate(
* () => matchMedia('(prefers-reduced-motion: no-preference)').matches
* );
* // → false
*
* await page.emulateMediaFeatures([
* {name: 'prefers-color-scheme', value: 'dark'},
* {name: 'prefers-reduced-motion', value: 'reduce'},
* ]);
* await page.evaluate(
* () => matchMedia('(prefers-color-scheme: dark)').matches
* );
* // → true
* await page.evaluate(
* () => matchMedia('(prefers-color-scheme: light)').matches
* );
* // → false
* await page.evaluate(
* () => matchMedia('(prefers-reduced-motion: reduce)').matches
* );
* // → true
* await page.evaluate(
* () => matchMedia('(prefers-reduced-motion: no-preference)').matches
* );
* // → false
*
* await page.emulateMediaFeatures([{name: 'color-gamut', value: 'p3'}]);
* await page.evaluate(() => matchMedia('(color-gamut: srgb)').matches);
* // → true
* await page.evaluate(() => matchMedia('(color-gamut: p3)').matches);
* // → true
* await page.evaluate(() => matchMedia('(color-gamut: rec2020)').matches);
* // → false
* ```
*/
emulateMediaFeatures(features?: MediaFeature[]): Promise<void>;
/**
* @param timezoneId - Changes the timezone of the page. See
* {@link https://source.chromium.org/chromium/chromium/deps/icu.git/+/faee8bc70570192d82d2978a71e2a615788597d1:source/data/misc/metaZones.txt | ICU’s metaZones.txt}
* for a list of supported timezone IDs. Passing
* `null` disables timezone emulation.
*/
emulateTimezone(timezoneId?: string): Promise<void>;
/**
* Emulates the idle state.
* If no arguments set, clears idle state emulation.
*
* @example
*
* ```ts
* // set idle emulation
* await page.emulateIdleState({isUserActive: true, isScreenUnlocked: false});
*
* // do some checks here
* ...
*
* // clear idle emulation
* await page.emulateIdleState();
* ```
*
* @param overrides - Mock idle state. If not set, clears idle overrides
*/
emulateIdleState(overrides?: {
isUserActive: boolean;
isScreenUnlocked: boolean;
}): Promise<void>;
/**
* Simulates the given vision deficiency on the page.
*
* @example
*
* ```ts
* const puppeteer = require('puppeteer');
*
* (async () => {
* const browser = await puppeteer.launch();
* const page = await browser.newPage();
* await page.goto('https://v8.dev/blog/10-years');
*
* await page.emulateVisionDeficiency('achromatopsia');
* await page.screenshot({path: 'achromatopsia.png'});
*
* await page.emulateVisionDeficiency('deuteranopia');
* await page.screenshot({path: 'deuteranopia.png'});
*
* await page.emulateVisionDeficiency('blurredVision');
* await page.screenshot({path: 'blurred-vision.png'});
*
* await browser.close();
* })();
* ```
*
* @param type - the type of deficiency to simulate, or `'none'` to reset.
*/
emulateVisionDeficiency(type?: Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type']): Promise<void>;
/**
* `page.setViewport` will resize the page. A lot of websites don't expect
* phones to change size, so you should set the viewport before navigating to
* the page.
*
* In the case of multiple pages in a single browser, each page can have its
* own viewport size.
* @example
*
* ```ts
* const page = await browser.newPage();
* await page.setViewport({
* width: 640,
* height: 480,
* deviceScaleFactor: 1,
* });
* await page.goto('https://example.com');
* ```
*
* @param viewport -
* @remarks
* Argument viewport have following properties:
*
* - `width`: page width in pixels. required
*
* - `height`: page height in pixels. required
*
* - `deviceScaleFactor`: Specify device scale factor (can be thought of as
* DPR). Defaults to `1`.
*
* - `isMobile`: Whether the meta viewport tag is taken into account. Defaults
* to `false`.
*
* - `hasTouch`: Specifies if viewport supports touch events. Defaults to `false`
*
* - `isLandScape`: Specifies if viewport is in landscape mode. Defaults to false.
*
* NOTE: in certain cases, setting viewport will reload the page in order to
* set the isMobile or hasTouch properties.
*/
setViewport(viewport: Viewport): Promise<void>;
/**
* @returns
*
* - `width`: page's width in pixels
*
* - `height`: page's height in pixels
*
* - `deviceScalarFactor`: Specify device scale factor (can be though of as
* dpr). Defaults to `1`.
*
* - `isMobile`: Whether the meta viewport tag is taken into account. Defaults
* to `false`.
*
* - `hasTouch`: Specifies if viewport supports touch events. Defaults to
* `false`.
*
* - `isLandScape`: Specifies if viewport is in landscape mode. Defaults to
* `false`.
*/
viewport(): Viewport | null;
/**
* Evaluates a function in the page's context and returns the result.
*
* If the function passed to `page.evaluteHandle` returns a Promise, the
* function will wait for the promise to resolve and return its value.
*
* @example
*
* ```ts
* const result = await frame.evaluate(() => {
* return Promise.resolve(8 * 7);
* });
* console.log(result); // prints "56"
* ```
*
* You can pass a string instead of a function (although functions are
* recommended as they are easier to debug and use with TypeScript):
*
* @example
*
* ```ts
* const aHandle = await page.evaluate('1 + 2');
* ```
*
* To get the best TypeScript experience, you should pass in as the
* generic the type of `pageFunction`:
*
* ```ts
* const aHandle = await page.evaluate(() => 2);
* ```
*
* @example
*
* {@link ElementHandle} instances (including {@link JSHandle}s) can be passed
* as arguments to the `pageFunction`:
*
* ```ts
* const bodyHandle = await page.$('body');
* const html = await page.evaluate(body => body.innerHTML, bodyHandle);
* await bodyHandle.dispose();
* ```
*
* @param pageFunction - a function that is run within the page
* @param args - arguments to be passed to the pageFunction
*
* @returns the return value of `pageFunction`.
*/
evaluate<Params extends unknown[], Func extends EvaluateFunc<Params> = EvaluateFunc<Params>>(pageFunction: Func | string, ...args: Params): Promise<Awaited<ReturnType<Func>>>;
/**
* Adds a function which would be invoked in one of the following scenarios:
*
* - whenever the page is navigated
*
* - whenever the child frame is attached or navigated. In this case, the
* function is invoked in the context of the newly attached frame.
*
* The function is invoked after the document was created but before any of
* its scripts were run. This is useful to amend the JavaScript environment,
* e.g. to seed `Math.random`.
* @param pageFunction - Function to be evaluated in browser context
* @param args - Arguments to pass to `pageFunction`
* @example
* An example of overriding the navigator.languages property before the page loads:
*
* ```ts
* // preload.js
*
* // overwrite the `languages` property to use a custom getter
* Object.defineProperty(navigator, 'languages', {
* get: function () {
* return ['en-US', 'en', 'bn'];
* },
* });
*
* // In your puppeteer script, assuming the preload.js file is
* // in same folder of our script.
* const preloadFile = fs.readFileSync('./preload.js', 'utf8');
* await page.evaluateOnNewDocument(preloadFile);
* ```
*/
evaluateOnNewDocument<Params extends unknown[], Func extends (...args: Params) => unknown = (...args: Params) => unknown>(pageFunction: Func | string, ...args: Params): Promise<void>;
/**
* Toggles ignoring cache for each request based on the enabled state. By
* default, caching is enabled.
* @param enabled - sets the `enabled` state of cache
*/
setCacheEnabled(enabled?: boolean): Promise<void>;
/**
* @remarks
* Options object which might have the following properties:
*
* - `path` : The file path to save the image to. The screenshot type
* will be inferred from file extension. If `path` is a relative path, then
* it is resolved relative to
* {@link https://nodejs.org/api/process.html#process_process_cwd
* | current working directory}.
* If no path is provided, the image won't be saved to the disk.
*
* - `type` : Specify screenshot type, can be either `jpeg` or `png`.
* Defaults to 'png'.
*
* - `quality` : The quality of the image, between 0-100. Not
* applicable to `png` images.
*
* - `fullPage` : When true, takes a screenshot of the full
* scrollable page. Defaults to `false`.
*
* - `clip` : An object which specifies cl