playwright/types/types.d.ts

// This file is generated by /utils/generate_types/index.js
/**
 * Copyright (c) Microsoft Corporation.
 *
 * 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.
 */
import { Protocol } from './protocol';
import { ChildProcess } from 'child_process';
import { EventEmitter } from 'events';
import { Readable } from 'stream';

/**
 * Can be converted to JSON
 */
type Serializable = {};
/**
 * Can be converted to JSON, but may also contain JSHandles.
 */
type EvaluationArgument = {};

type NoHandles<Arg> = Arg extends JSHandle ? never : (Arg extends object ? { [Key in keyof Arg]: NoHandles<Arg[Key]> } : Arg);
type Unboxed<Arg> =
  Arg extends ElementHandle<infer T> ? T :
  Arg extends JSHandle<infer T> ? T :
  Arg extends NoHandles<Arg> ? Arg :
  Arg extends [infer A0] ? [Unboxed<A0>] :
  Arg extends [infer A0, infer A1] ? [Unboxed<A0>, Unboxed<A1>] :
  Arg extends [infer A0, infer A1, infer A2] ? [Unboxed<A0>, Unboxed<A1>, Unboxed<A2>] :
  Arg extends [infer A0, infer A1, infer A2, infer A3] ? [Unboxed<A0>, Unboxed<A1>, Unboxed<A2>, Unboxed<A3>] :
  Arg extends Array<infer T> ? Array<Unboxed<T>> :
  Arg extends object ? { [Key in keyof Arg]: Unboxed<Arg[Key]> } :
  Arg;
type PageFunction<Arg, R> = string | ((arg: Unboxed<Arg>) => R | Promise<R>);
type PageFunctionOn<On, Arg2, R> = string | ((on: On, arg2: Unboxed<Arg2>) => R | Promise<R>);
type SmartHandle<T> = T extends Node ? ElementHandle<T> : JSHandle<T>;
type ElementHandleForTag<K extends keyof HTMLElementTagNameMap> = ElementHandle<HTMLElementTagNameMap[K]>;

type PageWaitForSelectorOptionsNotHidden = PageWaitForSelectorOptions & {
  state: 'visible'|'attached';
};
type ElementHandleWaitForSelectorOptionsNotHidden = ElementHandleWaitForSelectorOptions & {
  state: 'visible'|'attached';
};

type BindingSource = { context: BrowserContext, page: Page, frame: Frame };

/**
 * Page provides methods to interact with a single tab in a Browser, or an extension background page in Chromium. One Browser instance might have multiple Page instances.
 * This example creates a page, navigates it to a URL, and then saves a screenshot:
 * ```js
 * const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.
 * 
 * (async () => {
 *   const browser = await webkit.launch();
 *   const context = await browser.newContext();
 *   const page = await context.newPage();
 *   await page.goto('https://example.com');
 *   await page.screenshot({path: 'screenshot.png'});
 *   await browser.close();
 * })();
 * ```
 * The Page class emits various events (described below) which can be handled using any of Node's native `EventEmitter` methods, such as `on`, `once` or `removeListener`.
 * This example logs a message for a single page `load` event:
 * ```js
 * page.once('load', () => console.log('Page loaded!'));
 * ```
 * To unsubscribe from events use the `removeListener` method:
 * ```js
 * function logRequest(interceptedRequest) {
 *   console.log('A request was made:', interceptedRequest.url());
 * }
 * page.on('request', logRequest);
 * // Sometime later...
 * page.removeListener('request', logRequest);
 * ```
 */
export interface Page {
  /**
   * Returns the value of the `pageFunction` invocation.
   * If the function passed to the `page.evaluate` returns a Promise, then `page.evaluate` would wait for the promise to resolve and return its value.
   * If the function passed to the `page.evaluate` returns a non-Serializable value, then `page.evaluate` resolves to `undefined`. DevTools Protocol also supports transferring some additional values that are not serializable by `JSON`: `-0`, `NaN`, `Infinity`, `-Infinity`, and bigint literals.
   * Passing argument to `pageFunction`:
   * ```js
   * const result = await page.evaluate(([x, y]) => {
   *   return Promise.resolve(x * y);
   * }, [7, 8]);
   * console.log(result); // prints "56"
   * ```
   * A string can also be passed in instead of a function:
   * ```js
   * console.log(await page.evaluate('1 + 2')); // prints "3"
   * const x = 10;
   * console.log(await page.evaluate(`1 + ${x}`)); // prints "11"
   * ```
   * ElementHandle instances can be passed as an argument to the `page.evaluate`:
   * ```js
   * const bodyHandle = await page.$('body');
   * const html = await page.evaluate(([body, suffix]) => body.innerHTML + suffix, [bodyHandle, 'hello']);
   * await bodyHandle.dispose();
   * ```
   * Shortcut for main frame's `frame.evaluate(pageFunction[, arg])`.
   * @param pageFunction Function to be evaluated in the page context
   * @param arg Optional argument to pass to `pageFunction`
   */
  evaluate<R, Arg>(pageFunction: PageFunction<Arg, R>, arg: Arg): Promise<R>;
  evaluate<R>(pageFunction: PageFunction<void, R>, arg?: any): Promise<R>;

  /**
   * Returns the value of the `pageFunction` invocation as in-page object (JSHandle).
   * The only difference between `page.evaluate` and `page.evaluateHandle` is that `page.evaluateHandle` returns in-page object (JSHandle).
   * If the function passed to the `page.evaluateHandle` returns a Promise, then `page.evaluateHandle` would wait for the promise to resolve and return its value.
   * A string can also be passed in instead of a function:
   * ```js
   * const aHandle = await page.evaluateHandle('document'); // Handle for the 'document'
   * ```
   * JSHandle instances can be passed as an argument to the `page.evaluateHandle`:
   * ```js
   * const aHandle = await page.evaluateHandle(() => document.body);
   * const resultHandle = await page.evaluateHandle(body => body.innerHTML, aHandle);
   * console.log(await resultHandle.jsonValue());
   * await resultHandle.dispose();
   * ```
   * @param pageFunction Function to be evaluated in the page context
   * @param arg Optional argument to pass to `pageFunction`
   */
  evaluateHandle<R, Arg>(pageFunction: PageFunction<Arg, R>, arg: Arg): Promise<SmartHandle<R>>;
  evaluateHandle<R>(pageFunction: PageFunction<void, R>, arg?: any): Promise<SmartHandle<R>>;

  /**
   * The method finds an element matching the specified selector within the page. If no elements match the selector, the return value resolves to `null`.
   * Shortcut for main frame's `frame.$(selector)`.
   * @param selector A selector to query for. See working with selectors for more details.
   */
  $<K extends keyof HTMLElementTagNameMap>(selector: K): Promise<ElementHandleForTag<K> | null>;
  $(selector: string): Promise<ElementHandle<SVGElement | HTMLElement> | null>;

  /**
   * The method finds all elements matching the specified selector within the page. If no elements match the selector, the return value resolves to `[]`.
   * Shortcut for main frame's `frame.$$(selector)`.
   * @param selector A selector to query for. See working with selectors for more details.
   */
  $$<K extends keyof HTMLElementTagNameMap>(selector: K): Promise<ElementHandleForTag<K>[]>;
  $$(selector: string): Promise<ElementHandle<SVGElement | HTMLElement>[]>;

  /**
   * The method finds an element matching the specified selector within the page and passes it as a first argument to `pageFunction`. If no elements match the selector, the method throws an error. Returns the value of `pageFunction`.
   * If `pageFunction` returns a Promise, then `page.$eval(selector, pageFunction[, arg])` would wait for the promise to resolve and return its value.
   * Examples:
   * ```js
   * const searchValue = await page.$eval('#search', el => el.value);
   * const preloadHref = await page.$eval('link[rel=preload]', el => el.href);
   * const html = await page.$eval('.main-container', (e, suffix) => e.outerHTML + suffix, 'hello');
   * ```
   * Shortcut for main frame's `frame.$eval(selector, pageFunction[, arg])`.
   * @param selector A selector to query for. See working with selectors for more details.
   * @param pageFunction Function to be evaluated in browser context
   * @param arg Optional argument to pass to `pageFunction`
   */
  $eval<K extends keyof HTMLElementTagNameMap, R, Arg>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K], Arg, R>, arg: Arg): Promise<R>;
  $eval<R, Arg, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E, Arg, R>, arg: Arg): Promise<R>;
  $eval<K extends keyof HTMLElementTagNameMap, R>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K], void, R>, arg?: any): Promise<R>;
  $eval<R, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E, void, R>, arg?: any): Promise<R>;

  /**
   * The method finds all elements matching the specified selector within the page and passes an array of matched elements as a first argument to `pageFunction`. Returns the result of `pageFunction` invocation.
   * If `pageFunction` returns a Promise, then `page.$$eval(selector, pageFunction[, arg])` would wait for the promise to resolve and return its value.
   * Examples:
   * ```js
   * const divsCounts = await page.$$eval('div', (divs, min) => divs.length >= min, 10);
   * ```
   * @param selector A selector to query for. See working with selectors for more details.
   * @param pageFunction Function to be evaluated in browser context
   * @param arg Optional argument to pass to `pageFunction`
   */
  $$eval<K extends keyof HTMLElementTagNameMap, R, Arg>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K][], Arg, R>, arg: Arg): Promise<R>;
  $$eval<R, Arg, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E[], Arg, R>, arg: Arg): Promise<R>;
  $$eval<K extends keyof HTMLElementTagNameMap, R>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K][], void, R>, arg?: any): Promise<R>;
  $$eval<R, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E[], void, R>, arg?: any): Promise<R>;

  /**
   * Returns when the `pageFunction` returns a truthy value. It resolves to a JSHandle of the truthy value.
   * The `waitForFunction` can be used to observe viewport size change:
   * ```js
   * const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.
   * 
   * (async () => {
   *   const browser = await webkit.launch();
   *   const page = await browser.newPage();
   *   const watchDog = page.waitForFunction('window.innerWidth < 100');
   *   await page.setViewportSize({width: 50, height: 50});
   *   await watchDog;
   *   await browser.close();
   * })();
   * ```
   * To pass an argument to the predicate of `page.waitForFunction` function:
   * ```js
   * const selector = '.foo';
   * await page.waitForFunction(selector => !!document.querySelector(selector), selector);
   * ```
   * Shortcut for main frame's `frame.waitForFunction(pageFunction[, arg, options])`.
   * @param pageFunction Function to be evaluated in browser context
   * @param arg Optional argument to pass to `pageFunction`
   * @param options 
   */
  waitForFunction<R, Arg>(pageFunction: PageFunction<Arg, R>, arg: Arg, options?: PageWaitForFunctionOptions): Promise<SmartHandle<R>>;
  waitForFunction<R>(pageFunction: PageFunction<void, R>, arg?: any, options?: PageWaitForFunctionOptions): Promise<SmartHandle<R>>;

  /**
   * Returns when element specified by selector satisfies `state` option. Returns `null` if waiting for `hidden` or `detached`.
   * Wait for the `selector` to satisfy `state` option (either appear/disappear from dom, or become visible/hidden). If at the moment of calling the method `selector` already satisfies the condition, the method will return immediately. If the selector doesn't satisfy the condition for the `timeout` milliseconds, the function will throw.
   * This method works across navigations:
   * ```js
   * const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.
   * 
   * (async () => {
   *   const browser = await chromium.launch();
   *   const page = await browser.newPage();
   *   let currentURL;
   *   page
   *     .waitForSelector('img')
   *     .then(() => console.log('First URL with image: ' + currentURL));
   *   for (currentURL of ['https://example.com', 'https://google.com', 'https://bbc.com']) {
   *     await page.goto(currentURL);
   *   }
   *   await browser.close();
   * })();
   * ```
   * @param selector A selector to query for. See working with selectors for more details.
   * @param options 
   */
  waitForSelector<K extends keyof HTMLElementTagNameMap>(selector: K, options?: PageWaitForSelectorOptionsNotHidden): Promise<ElementHandleForTag<K>>;
  waitForSelector(selector: string, options?: PageWaitForSelectorOptionsNotHidden): Promise<ElementHandle<SVGElement | HTMLElement>>;
  waitForSelector<K extends keyof HTMLElementTagNameMap>(selector: K, options: PageWaitForSelectorOptions): Promise<ElementHandleForTag<K> | null>;
  waitForSelector(selector: string, options: PageWaitForSelectorOptions): Promise<null|ElementHandle<SVGElement | HTMLElement>>;

  /**
   * The method adds a function called `name` on the `window` object of every frame in this page. When called, the function executes `playwrightBinding` and returns a Promise which resolves to the return value of `playwrightBinding`. If the `playwrightBinding` returns a Promise, it will be awaited.
   * The first argument of the `playwrightBinding` function contains information about the caller: `{ browserContext: BrowserContext, page: Page, frame: Frame }`.
   * See `browserContext.exposeBinding(name, playwrightBinding[, options])` for the context-wide version.
   * 
   * > **NOTE** Functions installed via `page.exposeBinding` survive navigations.
   * An example of exposing page URL to all frames in a page:
   * ```js
   * const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.
   * 
   * (async () => {
   *   const browser = await webkit.launch({ headless: false });
   *   const context = await browser.newContext();
   *   const page = await context.newPage();
   *   await page.exposeBinding('pageURL', ({ page }) => page.url());
   *   await page.setContent(`
   *     <script>
   *       async function onClick() {
   *         document.querySelector('div').textContent = await window.pageURL();
   *       }
   *     </script>
   *     <button onclick="onClick()">Click me</button>
   *     <div></div>
   *   `);
   *   await page.click('button');
   * })();
   * ```
   * An example of passing an element handle:
   * ```js
   * await page.exposeBinding('clicked', async (source, element) => {
   *   console.log(await element.textContent());
   * }, { handle: true });
   * await page.setContent(`
   *   <script>
   *     document.addEventListener('click', event => window.clicked(event.target));
   *   </script>
   *   <div>Click me</div>
   *   <div>Or click me</div>
   * `);
   * ```
   * @param name Name of the function on the window object.
   * @param playwrightBinding Callback function that will be called in the Playwright's context.
   * @param options 
   */
  exposeBinding(name: string, playwrightBinding: (source: BindingSource, arg: JSHandle) => any, options: { handle: true }): Promise<void>;
  exposeBinding(name: string, playwrightBinding: (source: BindingSource, ...args: any[]) => any, options?: { handle?: boolean }): Promise<void>;
  /**
   * Emitted when the page closes.
   */
  on(event: 'close', listener: () => void): this;

  /**
   * Emitted when JavaScript within the page calls one of console API methods, e.g. `console.log` or `console.dir`. Also emitted if the page throws an error or a warning.
   * The arguments passed into `console.log` appear as arguments on the event handler.
   * An example of handling `console` event:
   * ```js
   * page.on('console', msg => {
   *   for (let i = 0; i < msg.args().length; ++i)
   *     console.log(`${i}: ${msg.args()[i]}`);
   * });
   * page.evaluate(() => console.log('hello', 5, {foo: 'bar'}));
   * ```
   */
  on(event: 'console', listener: (consoleMessage: ConsoleMessage) => void): this;

  /**
   * Emitted when the page crashes. Browser pages might crash if they try to allocate too much memory. When the page crashes, ongoing and subsequent operations will throw.
   * The most common way to deal with crashes is to catch an exception:
   * ```js
   * try {
   *   // Crash might happen during a click.
   *   await page.click('button');
   *   // Or while waiting for an event.
   *   await page.waitForEvent('popup');
   * } catch (e) {
   *   // When the page crashes, exception message contains 'crash'.
   * }
   * ```
   * However, when manually listening to events, it might be useful to avoid stalling when the page crashes. In this case, handling `crash` event helps:
   * ```js
   * await new Promise((resolve, reject) => {
   *   page.on('requestfinished', async request => {
   *     if (await someProcessing(request))
   *       resolve(request);
   *   });
   *   page.on('crash', error => reject(error));
   * });
   * ```
   */
  on(event: 'crash', listener: () => void): this;

  /**
   * Emitted when a JavaScript dialog appears, such as `alert`, `prompt`, `confirm` or `beforeunload`. Playwright can respond to the dialog via `dialog.accept([promptText])` or `dialog.dismiss()` methods.
   */
  on(event: 'dialog', listener: (dialog: Dialog) => void): this;

  /**
   * Emitted when the JavaScript `DOMContentLoaded` event is dispatched.
   */
  on(event: 'domcontentloaded', listener: () => void): this;

  /**
   * Emitted when attachment download started. User can access basic file operations on downloaded content via the passed Download instance.
   * 
   * > **NOTE** Browser context **must** be created with the `acceptDownloads` set to `true` when user needs access to the downloaded content. If `acceptDownloads` is not set or set to `false`, download events are emitted, but the actual download is not performed and user has no access to the downloaded files.
   */
  on(event: 'download', listener: (download: Download) => void): this;

  /**
   * Emitted when a file chooser is supposed to appear, such as after clicking the  `<input type=file>`. Playwright can respond to it via setting the input files using `fileChooser.setFiles(files[, options])` that can be uploaded after that.
   * ```js
   * page.on('filechooser', async (fileChooser) => {
   *   await fileChooser.setFiles('/tmp/myfile.pdf');
   * });
   * ```
   */
  on(event: 'filechooser', listener: (fileChooser: FileChooser) => void): this;

  /**
   * Emitted when a frame is attached.
   */
  on(event: 'frameattached', listener: (frame: Frame) => void): this;

  /**
   * Emitted when a frame is detached.
   */
  on(event: 'framedetached', listener: (frame: Frame) => void): this;

  /**
   * Emitted when a frame is navigated to a new url.
   */
  on(event: 'framenavigated', listener: (frame: Frame) => void): this;

  /**
   * Emitted when the JavaScript `load` event is dispatched.
   */
  on(event: 'load', listener: () => void): this;

  /**
   * Emitted when an uncaught exception happens within the page.
   */
  on(event: 'pageerror', listener: (error: Error) => void): this;

  /**
   * Emitted when the page opens a new tab or window. This event is emitted in addition to the `browserContext.on('page')`, but only for popups relevant to this page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [popup] = await Promise.all([
   *   page.waitForEvent('popup'),
   *   page.evaluate(() => window.open('https://example.com')),
   * ]);
   * console.log(await popup.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  on(event: 'popup', listener: (page: Page) => void): this;

  /**
   * Emitted when a page issues a request. The [request] object is read-only. In order to intercept and mutate requests, see `page.route(url, handler)` or `browserContext.route(url, handler)`.
   */
  on(event: 'request', listener: (request: Request) => void): this;

  /**
   * Emitted when a request fails, for example by timing out.
   * 
   * > **NOTE** HTTP Error responses, such as 404 or 503, are still successful responses from HTTP standpoint, so request will complete with `page.on('requestfinished')` event and not with `page.on('requestfailed')`.
   */
  on(event: 'requestfailed', listener: (request: Request) => void): this;

  /**
   * Emitted when a request finishes successfully after downloading the response body. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  on(event: 'requestfinished', listener: (request: Request) => void): this;

  /**
   * Emitted when [response] status and headers are received for a request. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  on(event: 'response', listener: (response: Response) => void): this;

  /**
   * Emitted when <WebSocket> request is sent.
   */
  on(event: 'websocket', listener: (webSocket: WebSocket) => void): this;

  /**
   * Emitted when a dedicated WebWorker is spawned by the page.
   */
  on(event: 'worker', listener: (worker: Worker) => void): this;

  /**
   * Emitted when the page closes.
   */
  once(event: 'close', listener: () => void): this;

  /**
   * Emitted when JavaScript within the page calls one of console API methods, e.g. `console.log` or `console.dir`. Also emitted if the page throws an error or a warning.
   * The arguments passed into `console.log` appear as arguments on the event handler.
   * An example of handling `console` event:
   * ```js
   * page.on('console', msg => {
   *   for (let i = 0; i < msg.args().length; ++i)
   *     console.log(`${i}: ${msg.args()[i]}`);
   * });
   * page.evaluate(() => console.log('hello', 5, {foo: 'bar'}));
   * ```
   */
  once(event: 'console', listener: (consoleMessage: ConsoleMessage) => void): this;

  /**
   * Emitted when the page crashes. Browser pages might crash if they try to allocate too much memory. When the page crashes, ongoing and subsequent operations will throw.
   * The most common way to deal with crashes is to catch an exception:
   * ```js
   * try {
   *   // Crash might happen during a click.
   *   await page.click('button');
   *   // Or while waiting for an event.
   *   await page.waitForEvent('popup');
   * } catch (e) {
   *   // When the page crashes, exception message contains 'crash'.
   * }
   * ```
   * However, when manually listening to events, it might be useful to avoid stalling when the page crashes. In this case, handling `crash` event helps:
   * ```js
   * await new Promise((resolve, reject) => {
   *   page.on('requestfinished', async request => {
   *     if (await someProcessing(request))
   *       resolve(request);
   *   });
   *   page.on('crash', error => reject(error));
   * });
   * ```
   */
  once(event: 'crash', listener: () => void): this;

  /**
   * Emitted when a JavaScript dialog appears, such as `alert`, `prompt`, `confirm` or `beforeunload`. Playwright can respond to the dialog via `dialog.accept([promptText])` or `dialog.dismiss()` methods.
   */
  once(event: 'dialog', listener: (dialog: Dialog) => void): this;

  /**
   * Emitted when the JavaScript `DOMContentLoaded` event is dispatched.
   */
  once(event: 'domcontentloaded', listener: () => void): this;

  /**
   * Emitted when attachment download started. User can access basic file operations on downloaded content via the passed Download instance.
   * 
   * > **NOTE** Browser context **must** be created with the `acceptDownloads` set to `true` when user needs access to the downloaded content. If `acceptDownloads` is not set or set to `false`, download events are emitted, but the actual download is not performed and user has no access to the downloaded files.
   */
  once(event: 'download', listener: (download: Download) => void): this;

  /**
   * Emitted when a file chooser is supposed to appear, such as after clicking the  `<input type=file>`. Playwright can respond to it via setting the input files using `fileChooser.setFiles(files[, options])` that can be uploaded after that.
   * ```js
   * page.on('filechooser', async (fileChooser) => {
   *   await fileChooser.setFiles('/tmp/myfile.pdf');
   * });
   * ```
   */
  once(event: 'filechooser', listener: (fileChooser: FileChooser) => void): this;

  /**
   * Emitted when a frame is attached.
   */
  once(event: 'frameattached', listener: (frame: Frame) => void): this;

  /**
   * Emitted when a frame is detached.
   */
  once(event: 'framedetached', listener: (frame: Frame) => void): this;

  /**
   * Emitted when a frame is navigated to a new url.
   */
  once(event: 'framenavigated', listener: (frame: Frame) => void): this;

  /**
   * Emitted when the JavaScript `load` event is dispatched.
   */
  once(event: 'load', listener: () => void): this;

  /**
   * Emitted when an uncaught exception happens within the page.
   */
  once(event: 'pageerror', listener: (error: Error) => void): this;

  /**
   * Emitted when the page opens a new tab or window. This event is emitted in addition to the `browserContext.on('page')`, but only for popups relevant to this page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [popup] = await Promise.all([
   *   page.waitForEvent('popup'),
   *   page.evaluate(() => window.open('https://example.com')),
   * ]);
   * console.log(await popup.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  once(event: 'popup', listener: (page: Page) => void): this;

  /**
   * Emitted when a page issues a request. The [request] object is read-only. In order to intercept and mutate requests, see `page.route(url, handler)` or `browserContext.route(url, handler)`.
   */
  once(event: 'request', listener: (request: Request) => void): this;

  /**
   * Emitted when a request fails, for example by timing out.
   * 
   * > **NOTE** HTTP Error responses, such as 404 or 503, are still successful responses from HTTP standpoint, so request will complete with `page.on('requestfinished')` event and not with `page.on('requestfailed')`.
   */
  once(event: 'requestfailed', listener: (request: Request) => void): this;

  /**
   * Emitted when a request finishes successfully after downloading the response body. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  once(event: 'requestfinished', listener: (request: Request) => void): this;

  /**
   * Emitted when [response] status and headers are received for a request. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  once(event: 'response', listener: (response: Response) => void): this;

  /**
   * Emitted when <WebSocket> request is sent.
   */
  once(event: 'websocket', listener: (webSocket: WebSocket) => void): this;

  /**
   * Emitted when a dedicated WebWorker is spawned by the page.
   */
  once(event: 'worker', listener: (worker: Worker) => void): this;

  /**
   * Emitted when the page closes.
   */
  addListener(event: 'close', listener: () => void): this;

  /**
   * Emitted when JavaScript within the page calls one of console API methods, e.g. `console.log` or `console.dir`. Also emitted if the page throws an error or a warning.
   * The arguments passed into `console.log` appear as arguments on the event handler.
   * An example of handling `console` event:
   * ```js
   * page.on('console', msg => {
   *   for (let i = 0; i < msg.args().length; ++i)
   *     console.log(`${i}: ${msg.args()[i]}`);
   * });
   * page.evaluate(() => console.log('hello', 5, {foo: 'bar'}));
   * ```
   */
  addListener(event: 'console', listener: (consoleMessage: ConsoleMessage) => void): this;

  /**
   * Emitted when the page crashes. Browser pages might crash if they try to allocate too much memory. When the page crashes, ongoing and subsequent operations will throw.
   * The most common way to deal with crashes is to catch an exception:
   * ```js
   * try {
   *   // Crash might happen during a click.
   *   await page.click('button');
   *   // Or while waiting for an event.
   *   await page.waitForEvent('popup');
   * } catch (e) {
   *   // When the page crashes, exception message contains 'crash'.
   * }
   * ```
   * However, when manually listening to events, it might be useful to avoid stalling when the page crashes. In this case, handling `crash` event helps:
   * ```js
   * await new Promise((resolve, reject) => {
   *   page.on('requestfinished', async request => {
   *     if (await someProcessing(request))
   *       resolve(request);
   *   });
   *   page.on('crash', error => reject(error));
   * });
   * ```
   */
  addListener(event: 'crash', listener: () => void): this;

  /**
   * Emitted when a JavaScript dialog appears, such as `alert`, `prompt`, `confirm` or `beforeunload`. Playwright can respond to the dialog via `dialog.accept([promptText])` or `dialog.dismiss()` methods.
   */
  addListener(event: 'dialog', listener: (dialog: Dialog) => void): this;

  /**
   * Emitted when the JavaScript `DOMContentLoaded` event is dispatched.
   */
  addListener(event: 'domcontentloaded', listener: () => void): this;

  /**
   * Emitted when attachment download started. User can access basic file operations on downloaded content via the passed Download instance.
   * 
   * > **NOTE** Browser context **must** be created with the `acceptDownloads` set to `true` when user needs access to the downloaded content. If `acceptDownloads` is not set or set to `false`, download events are emitted, but the actual download is not performed and user has no access to the downloaded files.
   */
  addListener(event: 'download', listener: (download: Download) => void): this;

  /**
   * Emitted when a file chooser is supposed to appear, such as after clicking the  `<input type=file>`. Playwright can respond to it via setting the input files using `fileChooser.setFiles(files[, options])` that can be uploaded after that.
   * ```js
   * page.on('filechooser', async (fileChooser) => {
   *   await fileChooser.setFiles('/tmp/myfile.pdf');
   * });
   * ```
   */
  addListener(event: 'filechooser', listener: (fileChooser: FileChooser) => void): this;

  /**
   * Emitted when a frame is attached.
   */
  addListener(event: 'frameattached', listener: (frame: Frame) => void): this;

  /**
   * Emitted when a frame is detached.
   */
  addListener(event: 'framedetached', listener: (frame: Frame) => void): this;

  /**
   * Emitted when a frame is navigated to a new url.
   */
  addListener(event: 'framenavigated', listener: (frame: Frame) => void): this;

  /**
   * Emitted when the JavaScript `load` event is dispatched.
   */
  addListener(event: 'load', listener: () => void): this;

  /**
   * Emitted when an uncaught exception happens within the page.
   */
  addListener(event: 'pageerror', listener: (error: Error) => void): this;

  /**
   * Emitted when the page opens a new tab or window. This event is emitted in addition to the `browserContext.on('page')`, but only for popups relevant to this page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [popup] = await Promise.all([
   *   page.waitForEvent('popup'),
   *   page.evaluate(() => window.open('https://example.com')),
   * ]);
   * console.log(await popup.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  addListener(event: 'popup', listener: (page: Page) => void): this;

  /**
   * Emitted when a page issues a request. The [request] object is read-only. In order to intercept and mutate requests, see `page.route(url, handler)` or `browserContext.route(url, handler)`.
   */
  addListener(event: 'request', listener: (request: Request) => void): this;

  /**
   * Emitted when a request fails, for example by timing out.
   * 
   * > **NOTE** HTTP Error responses, such as 404 or 503, are still successful responses from HTTP standpoint, so request will complete with `page.on('requestfinished')` event and not with `page.on('requestfailed')`.
   */
  addListener(event: 'requestfailed', listener: (request: Request) => void): this;

  /**
   * Emitted when a request finishes successfully after downloading the response body. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  addListener(event: 'requestfinished', listener: (request: Request) => void): this;

  /**
   * Emitted when [response] status and headers are received for a request. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  addListener(event: 'response', listener: (response: Response) => void): this;

  /**
   * Emitted when <WebSocket> request is sent.
   */
  addListener(event: 'websocket', listener: (webSocket: WebSocket) => void): this;

  /**
   * Emitted when a dedicated WebWorker is spawned by the page.
   */
  addListener(event: 'worker', listener: (worker: Worker) => void): this;

  /**
   * Emitted when the page closes.
   */
  removeListener(event: 'close', listener: () => void): this;

  /**
   * Emitted when JavaScript within the page calls one of console API methods, e.g. `console.log` or `console.dir`. Also emitted if the page throws an error or a warning.
   * The arguments passed into `console.log` appear as arguments on the event handler.
   * An example of handling `console` event:
   * ```js
   * page.on('console', msg => {
   *   for (let i = 0; i < msg.args().length; ++i)
   *     console.log(`${i}: ${msg.args()[i]}`);
   * });
   * page.evaluate(() => console.log('hello', 5, {foo: 'bar'}));
   * ```
   */
  removeListener(event: 'console', listener: (consoleMessage: ConsoleMessage) => void): this;

  /**
   * Emitted when the page crashes. Browser pages might crash if they try to allocate too much memory. When the page crashes, ongoing and subsequent operations will throw.
   * The most common way to deal with crashes is to catch an exception:
   * ```js
   * try {
   *   // Crash might happen during a click.
   *   await page.click('button');
   *   // Or while waiting for an event.
   *   await page.waitForEvent('popup');
   * } catch (e) {
   *   // When the page crashes, exception message contains 'crash'.
   * }
   * ```
   * However, when manually listening to events, it might be useful to avoid stalling when the page crashes. In this case, handling `crash` event helps:
   * ```js
   * await new Promise((resolve, reject) => {
   *   page.on('requestfinished', async request => {
   *     if (await someProcessing(request))
   *       resolve(request);
   *   });
   *   page.on('crash', error => reject(error));
   * });
   * ```
   */
  removeListener(event: 'crash', listener: () => void): this;

  /**
   * Emitted when a JavaScript dialog appears, such as `alert`, `prompt`, `confirm` or `beforeunload`. Playwright can respond to the dialog via `dialog.accept([promptText])` or `dialog.dismiss()` methods.
   */
  removeListener(event: 'dialog', listener: (dialog: Dialog) => void): this;

  /**
   * Emitted when the JavaScript `DOMContentLoaded` event is dispatched.
   */
  removeListener(event: 'domcontentloaded', listener: () => void): this;

  /**
   * Emitted when attachment download started. User can access basic file operations on downloaded content via the passed Download instance.
   * 
   * > **NOTE** Browser context **must** be created with the `acceptDownloads` set to `true` when user needs access to the downloaded content. If `acceptDownloads` is not set or set to `false`, download events are emitted, but the actual download is not performed and user has no access to the downloaded files.
   */
  removeListener(event: 'download', listener: (download: Download) => void): this;

  /**
   * Emitted when a file chooser is supposed to appear, such as after clicking the  `<input type=file>`. Playwright can respond to it via setting the input files using `fileChooser.setFiles(files[, options])` that can be uploaded after that.
   * ```js
   * page.on('filechooser', async (fileChooser) => {
   *   await fileChooser.setFiles('/tmp/myfile.pdf');
   * });
   * ```
   */
  removeListener(event: 'filechooser', listener: (fileChooser: FileChooser) => void): this;

  /**
   * Emitted when a frame is attached.
   */
  removeListener(event: 'frameattached', listener: (frame: Frame) => void): this;

  /**
   * Emitted when a frame is detached.
   */
  removeListener(event: 'framedetached', listener: (frame: Frame) => void): this;

  /**
   * Emitted when a frame is navigated to a new url.
   */
  removeListener(event: 'framenavigated', listener: (frame: Frame) => void): this;

  /**
   * Emitted when the JavaScript `load` event is dispatched.
   */
  removeListener(event: 'load', listener: () => void): this;

  /**
   * Emitted when an uncaught exception happens within the page.
   */
  removeListener(event: 'pageerror', listener: (error: Error) => void): this;

  /**
   * Emitted when the page opens a new tab or window. This event is emitted in addition to the `browserContext.on('page')`, but only for popups relevant to this page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [popup] = await Promise.all([
   *   page.waitForEvent('popup'),
   *   page.evaluate(() => window.open('https://example.com')),
   * ]);
   * console.log(await popup.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  removeListener(event: 'popup', listener: (page: Page) => void): this;

  /**
   * Emitted when a page issues a request. The [request] object is read-only. In order to intercept and mutate requests, see `page.route(url, handler)` or `browserContext.route(url, handler)`.
   */
  removeListener(event: 'request', listener: (request: Request) => void): this;

  /**
   * Emitted when a request fails, for example by timing out.
   * 
   * > **NOTE** HTTP Error responses, such as 404 or 503, are still successful responses from HTTP standpoint, so request will complete with `page.on('requestfinished')` event and not with `page.on('requestfailed')`.
   */
  removeListener(event: 'requestfailed', listener: (request: Request) => void): this;

  /**
   * Emitted when a request finishes successfully after downloading the response body. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  removeListener(event: 'requestfinished', listener: (request: Request) => void): this;

  /**
   * Emitted when [response] status and headers are received for a request. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  removeListener(event: 'response', listener: (response: Response) => void): this;

  /**
   * Emitted when <WebSocket> request is sent.
   */
  removeListener(event: 'websocket', listener: (webSocket: WebSocket) => void): this;

  /**
   * Emitted when a dedicated WebWorker is spawned by the page.
   */
  removeListener(event: 'worker', listener: (worker: Worker) => void): this;

  /**
   * Emitted when the page closes.
   */
  off(event: 'close', listener: () => void): this;

  /**
   * Emitted when JavaScript within the page calls one of console API methods, e.g. `console.log` or `console.dir`. Also emitted if the page throws an error or a warning.
   * The arguments passed into `console.log` appear as arguments on the event handler.
   * An example of handling `console` event:
   * ```js
   * page.on('console', msg => {
   *   for (let i = 0; i < msg.args().length; ++i)
   *     console.log(`${i}: ${msg.args()[i]}`);
   * });
   * page.evaluate(() => console.log('hello', 5, {foo: 'bar'}));
   * ```
   */
  off(event: 'console', listener: (consoleMessage: ConsoleMessage) => void): this;

  /**
   * Emitted when the page crashes. Browser pages might crash if they try to allocate too much memory. When the page crashes, ongoing and subsequent operations will throw.
   * The most common way to deal with crashes is to catch an exception:
   * ```js
   * try {
   *   // Crash might happen during a click.
   *   await page.click('button');
   *   // Or while waiting for an event.
   *   await page.waitForEvent('popup');
   * } catch (e) {
   *   // When the page crashes, exception message contains 'crash'.
   * }
   * ```
   * However, when manually listening to events, it might be useful to avoid stalling when the page crashes. In this case, handling `crash` event helps:
   * ```js
   * await new Promise((resolve, reject) => {
   *   page.on('requestfinished', async request => {
   *     if (await someProcessing(request))
   *       resolve(request);
   *   });
   *   page.on('crash', error => reject(error));
   * });
   * ```
   */
  off(event: 'crash', listener: () => void): this;

  /**
   * Emitted when a JavaScript dialog appears, such as `alert`, `prompt`, `confirm` or `beforeunload`. Playwright can respond to the dialog via `dialog.accept([promptText])` or `dialog.dismiss()` methods.
   */
  off(event: 'dialog', listener: (dialog: Dialog) => void): this;

  /**
   * Emitted when the JavaScript `DOMContentLoaded` event is dispatched.
   */
  off(event: 'domcontentloaded', listener: () => void): this;

  /**
   * Emitted when attachment download started. User can access basic file operations on downloaded content via the passed Download instance.
   * 
   * > **NOTE** Browser context **must** be created with the `acceptDownloads` set to `true` when user needs access to the downloaded content. If `acceptDownloads` is not set or set to `false`, download events are emitted, but the actual download is not performed and user has no access to the downloaded files.
   */
  off(event: 'download', listener: (download: Download) => void): this;

  /**
   * Emitted when a file chooser is supposed to appear, such as after clicking the  `<input type=file>`. Playwright can respond to it via setting the input files using `fileChooser.setFiles(files[, options])` that can be uploaded after that.
   * ```js
   * page.on('filechooser', async (fileChooser) => {
   *   await fileChooser.setFiles('/tmp/myfile.pdf');
   * });
   * ```
   */
  off(event: 'filechooser', listener: (fileChooser: FileChooser) => void): this;

  /**
   * Emitted when a frame is attached.
   */
  off(event: 'frameattached', listener: (frame: Frame) => void): this;

  /**
   * Emitted when a frame is detached.
   */
  off(event: 'framedetached', listener: (frame: Frame) => void): this;

  /**
   * Emitted when a frame is navigated to a new url.
   */
  off(event: 'framenavigated', listener: (frame: Frame) => void): this;

  /**
   * Emitted when the JavaScript `load` event is dispatched.
   */
  off(event: 'load', listener: () => void): this;

  /**
   * Emitted when an uncaught exception happens within the page.
   */
  off(event: 'pageerror', listener: (error: Error) => void): this;

  /**
   * Emitted when the page opens a new tab or window. This event is emitted in addition to the `browserContext.on('page')`, but only for popups relevant to this page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [popup] = await Promise.all([
   *   page.waitForEvent('popup'),
   *   page.evaluate(() => window.open('https://example.com')),
   * ]);
   * console.log(await popup.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  off(event: 'popup', listener: (page: Page) => void): this;

  /**
   * Emitted when a page issues a request. The [request] object is read-only. In order to intercept and mutate requests, see `page.route(url, handler)` or `browserContext.route(url, handler)`.
   */
  off(event: 'request', listener: (request: Request) => void): this;

  /**
   * Emitted when a request fails, for example by timing out.
   * 
   * > **NOTE** HTTP Error responses, such as 404 or 503, are still successful responses from HTTP standpoint, so request will complete with `page.on('requestfinished')` event and not with `page.on('requestfailed')`.
   */
  off(event: 'requestfailed', listener: (request: Request) => void): this;

  /**
   * Emitted when a request finishes successfully after downloading the response body. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  off(event: 'requestfinished', listener: (request: Request) => void): this;

  /**
   * Emitted when [response] status and headers are received for a request. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  off(event: 'response', listener: (response: Response) => void): this;

  /**
   * Emitted when <WebSocket> request is sent.
   */
  off(event: 'websocket', listener: (webSocket: WebSocket) => void): this;

  /**
   * Emitted when a dedicated WebWorker is spawned by the page.
   */
  off(event: 'worker', listener: (worker: Worker) => void): this;

  accessibility: Accessibility;

  /**
   * Adds a script which would be evaluated in one of the following scenarios:
   * - Whenever the page is navigated.
   * - Whenever the child frame is attached or navigated. In this case, the script is evaluated in the context of the newly attached frame.
   * The script is evaluated 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`.
   * An example of overriding `Math.random` before the page loads:
   * ```js
   * // preload.js
   * Math.random = () => 42;
   * 
   * // In your playwright script, assuming the preload.js file is in same directory
   * const preloadFile = fs.readFileSync('./preload.js', 'utf8');
   * await page.addInitScript(preloadFile);
   * ```
   * 
   * > **NOTE** The order of evaluation of multiple scripts installed via `browserContext.addInitScript(script[, arg])` and `page.addInitScript(script[, arg])` is not defined.
   * @param script Script to be evaluated in the page.
   * @param arg Optional argument to pass to `script` (only supported when passing a function).
   */
  addInitScript(script: Function|string|{
    /**
     * Path to the JavaScript file. If `path` is a relative path, then it is resolved relative to the current working directory.
     */
    path?: string;

    /**
     * Raw script content.
     */
    content?: string;
  }, arg?: Serializable): Promise<void>;

  /**
   * Adds a `<script>` tag into the page with the desired url or content. Returns the added tag when the script's onload fires or when the script content was injected into frame.
   * Shortcut for main frame's `frame.addScriptTag(params)`.
   * @param params 
   */
  addScriptTag(params: {
    /**
     * URL of a script to be added.
     */
    url?: string;

    /**
     * Path to the JavaScript file to be injected into frame. If `path` is a relative path, then it is resolved relative to the current working directory.
     */
    path?: string;

    /**
     * Raw JavaScript content to be injected into frame.
     */
    content?: string;

    /**
     * Script type. Use 'module' in order to load a Javascript ES6 module. See script for more details.
     */
    type?: string;
  }): Promise<ElementHandle>;

  /**
   * Adds a `<link rel="stylesheet">` tag into the page with the desired url or a `<style type="text/css">` tag with the content. Returns the added tag when the stylesheet's onload fires or when the CSS content was injected into frame.
   * Shortcut for main frame's `frame.addStyleTag(params)`.
   * @param params 
   */
  addStyleTag(params: {
    /**
     * URL of the `<link>` tag.
     */
    url?: string;

    /**
     * Path to the CSS file to be injected into frame. If `path` is a relative path, then it is resolved relative to the current working directory.
     */
    path?: string;

    /**
     * Raw CSS content to be injected into frame.
     */
    content?: string;
  }): Promise<ElementHandle>;

  /**
   * Brings page to front (activates tab).
   */
  bringToFront(): Promise<void>;

  /**
   * This method checks an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Ensure that matched element is a checkbox or a radio input. If not, this method rejects. If the element is already checked, this method returns immediately.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.mouse to click in the center of the element.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * - Ensure that the element is now checked. If not, this method rejects.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * Shortcut for main frame's `frame.check(selector[, options])`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  check(selector: string, options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * This method clicks an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.mouse to click in the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * Shortcut for main frame's `frame.click(selector[, options])`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  click(selector: string, options?: {
    /**
     * Defaults to `left`.
     */
    button?: "left"|"middle"|"right";

    /**
     * defaults to 1. See UIEvent.detail.
     */
    clickCount?: number;

    /**
     * Time to wait between `mousedown` and `mouseup` in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * If `runBeforeUnload` is `false`, does not run any unload handlers and waits for the page to be closed. If `runBeforeUnload` is `true` the method will run unload handlers, but will **not** wait for the page to close.
   * By default, `page.close()` **does not** run `beforeunload` handlers.
   * 
   * > **NOTE** if `runBeforeUnload` is passed as true, a `beforeunload` dialog might be summoned
   * 
   * > and should be handled manually via `page.on('dialog')` event.
   * @param options 
   */
  close(options?: {
    /**
     * Defaults to `false`. Whether to run the before unload page handlers.
     */
    runBeforeUnload?: boolean;
  }): Promise<void>;

  /**
   * Gets the full HTML contents of the page, including the doctype.
   */
  content(): Promise<string>;

  /**
   * Get the browser context that the page belongs to.
   */
  context(): BrowserContext;

  /**
   * Browser-specific Coverage implementation, only available for Chromium atm. See ChromiumCoverage for more details.
   */
  coverage: null|ChromiumCoverage;

  /**
   * This method double clicks an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.mouse to double click in the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set. Note that if the first click of the `dblclick()` triggers a navigation event, this method will reject.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * 
   * > **NOTE** `page.dblclick()` dispatches two `click` events and a single `dblclick` event.
   * Shortcut for main frame's `frame.dblclick(selector[, options])`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  dblclick(selector: string, options?: {
    /**
     * Defaults to `left`.
     */
    button?: "left"|"middle"|"right";

    /**
     * Time to wait between `mousedown` and `mouseup` in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * The snippet below dispatches the `click` event on the element. Regardless of the visibility state of the elment, `click` is dispatched. This is equivalend to calling element.click().
   * ```js
   * await page.dispatchEvent('button#submit', 'click');
   * ```
   * Under the hood, it creates an instance of an event based on the given `type`, initializes it with `eventInit` properties and dispatches it on the element. Events are `composed`, `cancelable` and bubble by default.
   * Since `eventInit` is event-specific, please refer to the events documentation for the lists of initial properties:
   * - DragEvent
   * - FocusEvent
   * - KeyboardEvent
   * - MouseEvent
   * - PointerEvent
   * - TouchEvent
   * - Event
   * You can also specify `JSHandle` as the property value if you want live objects to be passed into the event:
   * ```js
   * // Note you can only create DataTransfer in Chromium and Firefox
   * const dataTransfer = await page.evaluateHandle(() => new DataTransfer());
   * await page.dispatchEvent('#source', 'dragstart', { dataTransfer });
   * ```
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param type DOM event type: `"click"`, `"dragstart"`, etc.
   * @param eventInit Optional event-specific initialization properties.
   * @param options 
   */
  dispatchEvent(selector: string, type: string, eventInit?: EvaluationArgument, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * ```js
   * await page.evaluate(() => matchMedia('screen').matches);
   * // → true
   * await page.evaluate(() => matchMedia('print').matches);
   * // → false
   * 
   * await page.emulateMedia({ media: 'print' });
   * await page.evaluate(() => matchMedia('screen').matches);
   * // → false
   * await page.evaluate(() => matchMedia('print').matches);
   * // → true
   * 
   * await page.emulateMedia({});
   * await page.evaluate(() => matchMedia('screen').matches);
   * // → true
   * await page.evaluate(() => matchMedia('print').matches);
   * // → false
   * ```
   * ```js
   * await page.emulateMedia({ colorScheme: 'dark' });
   * 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-color-scheme: no-preference)').matches);
   * // → false
   * ```
   * @param params 
   */
  emulateMedia(params: {
    /**
     * Changes the CSS media type of the page. The only allowed values are `'screen'`, `'print'` and `null`. Passing `null` disables CSS media emulation. Omitting `media` or passing `undefined` does not change the emulated value.
     */
    media?: null|"print"|"screen";

    /**
     * Emulates `'prefers-colors-scheme'` media feature, supported values are `'light'`, `'dark'`, `'no-preference'`. Passing `null` disables color scheme emulation. Omitting `colorScheme` or passing `undefined` does not change the emulated value.
     */
    colorScheme?: null|"dark"|"light"|"no-preference";
  }): Promise<void>;

  /**
   * The method adds a function called `name` on the `window` object of every frame in the page. When called, the function executes `playwrightFunction` and returns a Promise which resolves to the return value of `playwrightFunction`.
   * If the `playwrightFunction` returns a Promise, it will be awaited.
   * See `browserContext.exposeFunction(name, playwrightFunction)` for context-wide exposed function.
   * 
   * > **NOTE** Functions installed via `page.exposeFunction` survive navigations.
   * An example of adding an `md5` function to the page:
   * ```js
   * const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.
   * const crypto = require('crypto');
   * 
   * (async () => {
   *   const browser = await webkit.launch({ headless: false });
   *   const page = await browser.newPage();
   *   await page.exposeFunction('md5', text => crypto.createHash('md5').update(text).digest('hex'));
   *   await page.setContent(`
   *     <script>
   *       async function onClick() {
   *         document.querySelector('div').textContent = await window.md5('PLAYWRIGHT');
   *       }
   *     </script>
   *     <button onclick="onClick()">Click me</button>
   *     <div></div>
   *   `);
   *   await page.click('button');
   * })();
   * ```
   * An example of adding a `window.readfile` function to the page:
   * ```js
   * const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.
   * const fs = require('fs');
   * 
   * (async () => {
   *   const browser = await chromium.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 playwrightFunction Callback function which will be called in Playwright's context.
   */
  exposeFunction(name: string, playwrightFunction: Function): Promise<void>;

  /**
   * This method waits for an element matching `selector`, waits for actionability checks, focuses the element, fills it and triggers an `input` event after filling. If the element matching `selector` is not an `<input>`, `<textarea>` or `[contenteditable]` element, this method throws an error. Note that you can pass an empty string to clear the input field.
   * To send fine-grained keyboard events, use `page.type(selector, text[, options])`.
   * Shortcut for main frame's `frame.fill(selector, value[, options])`
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param value Value to fill for the `<input>`, `<textarea>` or `[contenteditable]` element.
   * @param options 
   */
  fill(selector: string, value: string, options?: {
    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * This method fetches an element with `selector` and focuses it. If there's no element matching `selector`, the method waits until a matching element appears in the DOM.
   * Shortcut for main frame's `frame.focus(selector[, options])`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  focus(selector: string, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns frame matching the specified criteria. Either `name` or `url` must be specified.
   * ```js
   * const frame = page.frame('frame-name');
   * ```
   * ```js
   * const frame = page.frame({ url: /.*domain.*\/ });
   * ```
   * @param frameSelector Frame name or other frame lookup options.
   */
  frame(frameSelector: string|{
    /**
     * Frame name specified in the `iframe`'s `name` attribute.
     */
    name?: string;

    /**
     * A glob pattern, regex pattern or predicate receiving frame's `url` as a URL object.
     */
    url?: string|RegExp|Function;
  }): null|Frame;

  /**
   * An array of all frames attached to the page.
   */
  frames(): Array<Frame>;

  /**
   * Returns element attribute value.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param name Attribute name to get the value for.
   * @param options 
   */
  getAttribute(selector: string, name: string, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<null|string>;

  /**
   * Returns 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, returns `null`.
   * Navigate to the previous page in history.
   * @param options 
   */
  goBack(options?: {
    /**
     * Maximum operation time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultNavigationTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)`, `page.setDefaultNavigationTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;

    /**
     * When to consider operation succeeded, defaults to `load`. Events can be either:
     * - `'domcontentloaded'` - consider operation to be finished when the `DOMContentLoaded` event is fired.
     * - `'load'` - consider operation to be finished when the `load` event is fired.
     * - `'networkidle'` - consider operation to be finished when there are no network connections for at least `500` ms.
     */
    waitUntil?: "domcontentloaded"|"load"|"networkidle";
  }): Promise<null|Response>;

  /**
   * Returns 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, returns `null`.
   * Navigate to the next page in history.
   * @param options 
   */
  goForward(options?: {
    /**
     * Maximum operation time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultNavigationTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)`, `page.setDefaultNavigationTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;

    /**
     * When to consider operation succeeded, defaults to `load`. Events can be either:
     * - `'domcontentloaded'` - consider operation to be finished when the `DOMContentLoaded` event is fired.
     * - `'load'` - consider operation to be finished when the `load` event is fired.
     * - `'networkidle'` - consider operation to be finished when there are no network connections for at least `500` ms.
     */
    waitUntil?: "domcontentloaded"|"load"|"networkidle";
  }): Promise<null|Response>;

  /**
   * Returns the main resource response. In case of multiple redirects, the navigation will resolve with the response of the last redirect.
   * `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 upstream issue.
   * Shortcut for main frame's `frame.goto(url[, options])`
   * @param url URL to navigate page to. The url should include scheme, e.g. `https://`.
   * @param options 
   */
  goto(url: string, options?: {
    /**
     * Referer header value. If provided it will take preference over the referer header value set by `page.setExtraHTTPHeaders(headers)`.
     */
    referer?: string;

    /**
     * Maximum operation time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultNavigationTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)`, `page.setDefaultNavigationTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;

    /**
     * When to consider operation succeeded, defaults to `load`. Events can be either:
     * - `'domcontentloaded'` - consider operation to be finished when the `DOMContentLoaded` event is fired.
     * - `'load'` - consider operation to be finished when the `load` event is fired.
     * - `'networkidle'` - consider operation to be finished when there are no network connections for at least `500` ms.
     */
    waitUntil?: "domcontentloaded"|"load"|"networkidle";
  }): Promise<null|Response>;

  /**
   * This method hovers over an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.mouse to hover over the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * Shortcut for main frame's `frame.hover(selector[, options])`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  hover(selector: string, options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns `element.innerHTML`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  innerHTML(selector: string, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<string>;

  /**
   * Returns `element.innerText`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  innerText(selector: string, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<string>;

  /**
   * Indicates that the page has been closed.
   */
  isClosed(): boolean;

  keyboard: Keyboard;

  /**
   * The page's main frame. Page is guaranteed to have a main frame which persists during navigations.
   */
  mainFrame(): Frame;

  mouse: Mouse;

  /**
   * Returns the opener for popup pages and `null` for others. If the opener has been closed already the returns `null`.
   */
  opener(): Promise<null|Page>;

  /**
   * Returns the PDF buffer.
   * 
   * > **NOTE** Generating a pdf is currently only supported in Chromium headless.
   * `page.pdf()` generates a pdf of the page with `print` css media. To generate a pdf with `screen` media, call `page.emulateMedia(params)` before calling `page.pdf()`:
   * 
   * > **NOTE** By default, `page.pdf()` generates a pdf with modified colors for printing. Use the `-webkit-print-color-adjust` property to force rendering of exact colors.
   * ```js
   * // Generates a PDF with 'screen' media type.
   * await page.emulateMedia({media: 'screen'});
   * await page.pdf({path: 'page.pdf'});
   * ```
   * The `width`, `height`, and `margin` options accept values labeled with units. Unlabeled values are treated as pixels.
   * A few examples:
   * - `page.pdf({width: 100})` - prints with width set to 100 pixels
   * - `page.pdf({width: '100px'})` - prints with width set to 100 pixels
   * - `page.pdf({width: '10cm'})` - prints with width set to 10 centimeters.
   * All possible units are:
   * - `px` - pixel
   * - `in` - inch
   * - `cm` - centimeter
   * - `mm` - millimeter
   * The `format` options are:
   * - `Letter`: 8.5in x 11in
   * - `Legal`: 8.5in x 14in
   * - `Tabloid`: 11in x 17in
   * - `Ledger`: 17in x 11in
   * - `A0`: 33.1in x 46.8in
   * - `A1`: 23.4in x 33.1in
   * - `A2`: 16.54in x 23.4in
   * - `A3`: 11.7in x 16.54in
   * - `A4`: 8.27in x 11.7in
   * - `A5`: 5.83in x 8.27in
   * - `A6`: 4.13in x 5.83in
   * 
   * > **NOTE** `headerTemplate` and `footerTemplate` markup have the following limitations:
   * 
   * > 1. Script tags inside templates are not evaluated.
   * 
   * > 2. Page styles are not visible inside templates.
   * @param options 
   */
  pdf(options?: {
    /**
     * Display header and footer. Defaults to `false`.
     */
    displayHeaderFooter?: boolean;

    /**
     * HTML template for the print footer. Should use the same format as the `headerTemplate`.
     */
    footerTemplate?: string;

    /**
     * Paper format. If set, takes priority over `width` or `height` options. Defaults to 'Letter'.
     */
    format?: string;

    /**
     * HTML template for the print header. Should be valid HTML markup with following classes used to inject printing values into them:
     * - `'date'` formatted print date
     * - `'title'` document title
     * - `'url'` document location
     * - `'pageNumber'` current page number
     * - `'totalPages'` total pages in the document
     */
    headerTemplate?: string;

    /**
     * Paper height, accepts values labeled with units.
     */
    height?: string|number;

    /**
     * Paper orientation. Defaults to `false`.
     */
    landscape?: boolean;

    /**
     * Paper margins, defaults to none.
     */
    margin?: {
      /**
       * Top margin, accepts values labeled with units. Defaults to `0`.
       */
      top?: string|number;

      /**
       * Right margin, accepts values labeled with units. Defaults to `0`.
       */
      right?: string|number;

      /**
       * Bottom margin, accepts values labeled with units. Defaults to `0`.
       */
      bottom?: string|number;

      /**
       * Left margin, accepts values labeled with units. Defaults to `0`.
       */
      left?: string|number;
    };

    /**
     * Paper ranges to print, e.g., '1-5, 8, 11-13'. Defaults to the empty string, which means print all pages.
     */
    pageRanges?: string;

    /**
     * The file path to save the PDF to. If `path` is a relative path, then it is resolved relative to the current working directory. If no path is provided, the PDF won't be saved to the disk.
     */
    path?: string;

    /**
     * Give any CSS `@page` size declared in the page priority over what is declared in `width` and `height` or `format` options. Defaults to `false`, which will scale the content to fit the paper size.
     */
    preferCSSPageSize?: boolean;

    /**
     * Print background graphics. Defaults to `false`.
     */
    printBackground?: boolean;

    /**
     * Scale of the webpage rendering. Defaults to `1`. Scale amount must be between 0.1 and 2.
     */
    scale?: number;

    /**
     * Paper width, accepts values labeled with units.
     */
    width?: string|number;
  }): Promise<Buffer>;

  /**
   * Focuses the element, and then uses `keyboard.down(key)` and `keyboard.up(key)`.
   * `key` can specify the intended keyboardEvent.key value or a single character to generate the text for. A superset of the `key` values can be found here. Examples of the keys are:
   * `F1` - `F12`, `Digit0`- `Digit9`, `KeyA`- `KeyZ`, `Backquote`, `Minus`, `Equal`, `Backslash`, `Backspace`, `Tab`, `Delete`, `Escape`, `ArrowDown`, `End`, `Enter`, `Home`, `Insert`, `PageDown`, `PageUp`, `ArrowRight`, `ArrowUp`, etc.
   * Following modification shortcuts are also supported: `Shift`, `Control`, `Alt`, `Meta`, `ShiftLeft`.
   * Holding down `Shift` will type the text that corresponds to the `key` in the upper case.
   * If `key` is a single character, it is case-sensitive, so the values `a` and `A` will generate different respective texts.
   * Shortcuts such as `key: "Control+o"` or `key: "Control+Shift+T"` are supported as well. When speficied with the modifier, modifier is pressed and being held while the subsequent key is being pressed.
   * ```js
   * const page = await browser.newPage();
   * await page.goto('https://keycode.info');
   * await page.press('body', 'A');
   * await page.screenshot({ path: 'A.png' });
   * await page.press('body', 'ArrowLeft');
   * await page.screenshot({ path: 'ArrowLeft.png' });
   * await page.press('body', 'Shift+O');
   * await page.screenshot({ path: 'O.png' });
   * await browser.close();
   * ```
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param key Name of the key to press or a character to generate, such as `ArrowLeft` or `a`.
   * @param options 
   */
  press(selector: string, key: string, options?: {
    /**
     * Time to wait between `keydown` and `keyup` in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns the main resource response. In case of multiple redirects, the navigation will resolve with the response of the last redirect.
   * @param options 
   */
  reload(options?: {
    /**
     * Maximum operation time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultNavigationTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)`, `page.setDefaultNavigationTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;

    /**
     * When to consider operation succeeded, defaults to `load`. Events can be either:
     * - `'domcontentloaded'` - consider operation to be finished when the `DOMContentLoaded` event is fired.
     * - `'load'` - consider operation to be finished when the `load` event is fired.
     * - `'networkidle'` - consider operation to be finished when there are no network connections for at least `500` ms.
     */
    waitUntil?: "domcontentloaded"|"load"|"networkidle";
  }): Promise<null|Response>;

  /**
   * Routing provides the capability to modify network requests that are made by a page.
   * Once routing is enabled, every request matching the url pattern will stall unless it's continued, fulfilled or aborted.
   * 
   * > **NOTE** The handler will only be called for the first url if the response is a redirect.
   * An example of a naïve handler that aborts all image requests:
   * ```js
   * const page = await browser.newPage();
   * await page.route('**\/*.{png,jpg,jpeg}', route => route.abort());
   * await page.goto('https://example.com');
   * await browser.close();
   * ```
   * or the same snippet using a regex pattern instead:
   * ```js
   * const page = await browser.newPage();
   * await page.route(/(\.png$)|(\.jpg$)/, route => route.abort());
   * await page.goto('https://example.com');
   * await browser.close();
   * ```
   * Page routes take precedence over browser context routes (set up with `browserContext.route(url, handler)`) when request matches both handlers.
   * 
   * > **NOTE** Enabling routing disables http cache.
   * @param url A glob pattern, regex pattern or predicate receiving URL to match while routing.
   * @param handler handler function to route the request.
   */
  route(url: string|RegExp|((url: URL) => boolean), handler: ((route: Route, request: Request) => void)): Promise<void>;

  /**
   * Returns the buffer with the captured screenshot.
   * 
   * > **NOTE** Screenshots take at least 1/6 second on Chromium OS X and Chromium Windows. See https://crbug.com/741689 for discussion.
   * @param options 
   */
  screenshot(options?: {
    /**
     * An object which specifies clipping of the resulting image. Should have the following fields:
     */
    clip?: {
      /**
       * x-coordinate of top-left corner of clip area
       */
      x: number;

      /**
       * y-coordinate of top-left corner of clip area
       */
      y: number;

      /**
       * width of clipping area
       */
      width: number;

      /**
       * height of clipping area
       */
      height: number;
    };

    /**
     * When true, takes a screenshot of the full scrollable page, instead of the currently visible viewport. Defaults to `false`.
     */
    fullPage?: boolean;

    /**
     * Hides default white background and allows capturing screenshots with transparency. Not applicable to `jpeg` images. Defaults to `false`.
     */
    omitBackground?: boolean;

    /**
     * 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 the current working directory. If no path is provided, the image won't be saved to the disk.
     */
    path?: string;

    /**
     * The quality of the image, between 0-100. Not applicable to `png` images.
     */
    quality?: number;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;

    /**
     * Specify screenshot type, defaults to `png`.
     */
    type?: "jpeg"|"png";
  }): Promise<Buffer>;

  /**
   * Returns the array of option values that have been successfully selected.
   * Triggers a `change` and `input` event once all the provided options have been selected. If there's no `<select>` element matching `selector`, the method throws an error.
   * ```js
   * // single selection matching the value
   * page.selectOption('select#colors', 'blue');
   * 
   * // single selection matching both the value and the label
   * page.selectOption('select#colors', { label: 'Blue' });
   * 
   * // multiple selection
   * page.selectOption('select#colors', ['red', 'green', 'blue']);
   * 
   * ```
   * Shortcut for main frame's `frame.selectOption(selector, values[, options])`
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param values Options to select. If the `<select>` has the `multiple` attribute, all matching options are selected, otherwise only the first option matching one of the passed options is selected. String values are equivalent to `{value:'string'}`. Option is considered matching if all specified properties match.
   * @param options 
   */
  selectOption(selector: string, values: null|string|ElementHandle|Array<string>|{
    /**
     * Matches by `option.value`.
     */
    value?: string;

    /**
     * Matches by `option.label`.
     */
    label?: string;

    /**
     * Matches by the index.
     */
    index?: number;
  }|Array<ElementHandle>|Array<{
    /**
     * Matches by `option.value`.
     */
    value?: string;

    /**
     * Matches by `option.label`.
     */
    label?: string;

    /**
     * Matches by the index.
     */
    index?: number;
  }>, options?: {
    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<Array<string>>;

  /**
   * @param html HTML markup to assign to the page.
   * @param options 
   */
  setContent(html: string, options?: {
    /**
     * Maximum operation time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultNavigationTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)`, `page.setDefaultNavigationTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;

    /**
     * When to consider operation succeeded, defaults to `load`. Events can be either:
     * - `'domcontentloaded'` - consider operation to be finished when the `DOMContentLoaded` event is fired.
     * - `'load'` - consider operation to be finished when the `load` event is fired.
     * - `'networkidle'` - consider operation to be finished when there are no network connections for at least `500` ms.
     */
    waitUntil?: "domcontentloaded"|"load"|"networkidle";
  }): Promise<void>;

  /**
   * This setting will change the default maximum navigation time for the following methods and related shortcuts:
   * - `page.goBack([options])`
   * - `page.goForward([options])`
   * - `page.goto(url[, options])`
   * - `page.reload([options])`
   * - `page.setContent(html[, options])`
   * - `page.waitForNavigation([options])`
   * 
   * > **NOTE** `page.setDefaultNavigationTimeout(timeout)` takes priority over `page.setDefaultTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)` and `browserContext.setDefaultNavigationTimeout(timeout)`.
   * @param timeout Maximum navigation time in milliseconds
   */
  setDefaultNavigationTimeout(timeout: number): void;

  /**
   * This setting will change the default maximum time for all the methods accepting `timeout` option.
   * 
   * > **NOTE** `page.setDefaultNavigationTimeout(timeout)` takes priority over `page.setDefaultTimeout(timeout)`.
   * @param timeout Maximum time in milliseconds
   */
  setDefaultTimeout(timeout: number): void;

  /**
   * The extra HTTP headers will be sent with every request the page initiates.
   * 
   * > **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: { [key: string]: string; }): Promise<void>;

  /**
   * This method expects `selector` to point to an input element.
   * Sets the value of the file input to these file paths or files. If some of the `filePaths` are relative paths, then they are resolved relative to the the current working directory. For empty array, clears the selected files.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param files 
   * @param options 
   */
  setInputFiles(selector: string, files: string|Array<string>|{
    /**
     * File name **required**
     */
    name: string;

    /**
     * File type **required**
     */
    mimeType: string;

    /**
     * File content **required**
     */
    buffer: Buffer;
  }|Array<{
    /**
     * File name **required**
     */
    name: string;

    /**
     * File type **required**
     */
    mimeType: string;

    /**
     * File content **required**
     */
    buffer: Buffer;
  }>, options?: {
    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * In the case of multiple pages in a single browser, each page can have its own viewport size. However, `browser.newContext([options])` allows to set viewport size (and more) for all pages in the context at once.
   * `page.setViewportSize` will resize the page. A lot of websites don't expect phones to change size, so you should set the viewport size before navigating to the page.
   * ```js
   * const page = await browser.newPage();
   * await page.setViewportSize({
   *   width: 640,
   *   height: 480,
   * });
   * await page.goto('https://example.com');
   * ```
   * @param viewportSize 
   */
  setViewportSize(viewportSize: {
    /**
     * page width in pixels. **required**
     */
    width: number;

    /**
     * page height in pixels. **required**
     */
    height: number;
  }): Promise<void>;

  /**
   * This method taps an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.touchscreen to tap the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * 
   * > **NOTE** `page.tap()` requires that the `hasTouch` option of the browser context be set to true.
   * Shortcut for main frame's `frame.tap(selector[, options])`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  tap(selector: string, options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns `element.textContent`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  textContent(selector: string, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<null|string>;

  /**
   * Returns the page's title. Shortcut for main frame's `frame.title()`.
   */
  title(): Promise<string>;

  touchscreen: Touchscreen;

  /**
   * Sends a `keydown`, `keypress`/`input`, and `keyup` event for each character in the text. `page.type` can be used to send fine-grained keyboard events. To fill values in form fields, use `page.fill(selector, value[, options])`.
   * To press a special key, like `Control` or `ArrowDown`, use `keyboard.press(key[, options])`.
   * ```js
   * await page.type('#mytextarea', 'Hello'); // Types instantly
   * await page.type('#mytextarea', 'World', {delay: 100}); // Types slower, like a user
   * ```
   * Shortcut for main frame's `frame.type(selector, text[, options])`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param text A text to type into a focused element.
   * @param options 
   */
  type(selector: string, text: string, options?: {
    /**
     * Time to wait between key presses in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * This method unchecks an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Ensure that matched element is a checkbox or a radio input. If not, this method rejects. If the element is already unchecked, this method returns immediately.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.mouse to click in the center of the element.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * - Ensure that the element is now unchecked. If not, this method rejects.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * Shortcut for main frame's `frame.uncheck(selector[, options])`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  uncheck(selector: string, options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Removes a route created with `page.route(url, handler)`. When `handler` is not specified, removes all routes for the `url`.
   * @param url A glob pattern, regex pattern or predicate receiving URL to match while routing.
   * @param handler Optional handler function to route the request.
   */
  unroute(url: string|RegExp|((url: URL) => boolean), handler?: ((route: Route, request: Request) => void)): Promise<void>;

  /**
   * Shortcut for main frame's `frame.url()`.
   */
  url(): string;

  /**
   * Video object associated with this page.
   */
  video(): null|Video;

  viewportSize(): null|{
    /**
     * page width in pixels.
     */
    width: number;

    /**
     * page height in pixels.
     */
    height: number;
  };

  /**
   * Emitted when the page closes.
   */
  waitForEvent(event: 'close', optionsOrPredicate?: { predicate?: () => boolean, timeout?: number } | (() => boolean)): Promise<void>;

  /**
   * Emitted when JavaScript within the page calls one of console API methods, e.g. `console.log` or `console.dir`. Also emitted if the page throws an error or a warning.
   * The arguments passed into `console.log` appear as arguments on the event handler.
   * An example of handling `console` event:
   * ```js
   * page.on('console', msg => {
   *   for (let i = 0; i < msg.args().length; ++i)
   *     console.log(`${i}: ${msg.args()[i]}`);
   * });
   * page.evaluate(() => console.log('hello', 5, {foo: 'bar'}));
   * ```
   */
  waitForEvent(event: 'console', optionsOrPredicate?: { predicate?: (consoleMessage: ConsoleMessage) => boolean, timeout?: number } | ((consoleMessage: ConsoleMessage) => boolean)): Promise<ConsoleMessage>;

  /**
   * Emitted when the page crashes. Browser pages might crash if they try to allocate too much memory. When the page crashes, ongoing and subsequent operations will throw.
   * The most common way to deal with crashes is to catch an exception:
   * ```js
   * try {
   *   // Crash might happen during a click.
   *   await page.click('button');
   *   // Or while waiting for an event.
   *   await page.waitForEvent('popup');
   * } catch (e) {
   *   // When the page crashes, exception message contains 'crash'.
   * }
   * ```
   * However, when manually listening to events, it might be useful to avoid stalling when the page crashes. In this case, handling `crash` event helps:
   * ```js
   * await new Promise((resolve, reject) => {
   *   page.on('requestfinished', async request => {
   *     if (await someProcessing(request))
   *       resolve(request);
   *   });
   *   page.on('crash', error => reject(error));
   * });
   * ```
   */
  waitForEvent(event: 'crash', optionsOrPredicate?: { predicate?: () => boolean, timeout?: number } | (() => boolean)): Promise<void>;

  /**
   * Emitted when a JavaScript dialog appears, such as `alert`, `prompt`, `confirm` or `beforeunload`. Playwright can respond to the dialog via `dialog.accept([promptText])` or `dialog.dismiss()` methods.
   */
  waitForEvent(event: 'dialog', optionsOrPredicate?: { predicate?: (dialog: Dialog) => boolean, timeout?: number } | ((dialog: Dialog) => boolean)): Promise<Dialog>;

  /**
   * Emitted when the JavaScript `DOMContentLoaded` event is dispatched.
   */
  waitForEvent(event: 'domcontentloaded', optionsOrPredicate?: { predicate?: () => boolean, timeout?: number } | (() => boolean)): Promise<void>;

  /**
   * Emitted when attachment download started. User can access basic file operations on downloaded content via the passed Download instance.
   * 
   * > **NOTE** Browser context **must** be created with the `acceptDownloads` set to `true` when user needs access to the downloaded content. If `acceptDownloads` is not set or set to `false`, download events are emitted, but the actual download is not performed and user has no access to the downloaded files.
   */
  waitForEvent(event: 'download', optionsOrPredicate?: { predicate?: (download: Download) => boolean, timeout?: number } | ((download: Download) => boolean)): Promise<Download>;

  /**
   * Emitted when a file chooser is supposed to appear, such as after clicking the  `<input type=file>`. Playwright can respond to it via setting the input files using `fileChooser.setFiles(files[, options])` that can be uploaded after that.
   * ```js
   * page.on('filechooser', async (fileChooser) => {
   *   await fileChooser.setFiles('/tmp/myfile.pdf');
   * });
   * ```
   */
  waitForEvent(event: 'filechooser', optionsOrPredicate?: { predicate?: (fileChooser: FileChooser) => boolean, timeout?: number } | ((fileChooser: FileChooser) => boolean)): Promise<FileChooser>;

  /**
   * Emitted when a frame is attached.
   */
  waitForEvent(event: 'frameattached', optionsOrPredicate?: { predicate?: (frame: Frame) => boolean, timeout?: number } | ((frame: Frame) => boolean)): Promise<Frame>;

  /**
   * Emitted when a frame is detached.
   */
  waitForEvent(event: 'framedetached', optionsOrPredicate?: { predicate?: (frame: Frame) => boolean, timeout?: number } | ((frame: Frame) => boolean)): Promise<Frame>;

  /**
   * Emitted when a frame is navigated to a new url.
   */
  waitForEvent(event: 'framenavigated', optionsOrPredicate?: { predicate?: (frame: Frame) => boolean, timeout?: number } | ((frame: Frame) => boolean)): Promise<Frame>;

  /**
   * Emitted when the JavaScript `load` event is dispatched.
   */
  waitForEvent(event: 'load', optionsOrPredicate?: { predicate?: () => boolean, timeout?: number } | (() => boolean)): Promise<void>;

  /**
   * Emitted when an uncaught exception happens within the page.
   */
  waitForEvent(event: 'pageerror', optionsOrPredicate?: { predicate?: (error: Error) => boolean, timeout?: number } | ((error: Error) => boolean)): Promise<Error>;

  /**
   * Emitted when the page opens a new tab or window. This event is emitted in addition to the `browserContext.on('page')`, but only for popups relevant to this page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [popup] = await Promise.all([
   *   page.waitForEvent('popup'),
   *   page.evaluate(() => window.open('https://example.com')),
   * ]);
   * console.log(await popup.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  waitForEvent(event: 'popup', optionsOrPredicate?: { predicate?: (page: Page) => boolean, timeout?: number } | ((page: Page) => boolean)): Promise<Page>;

  /**
   * Emitted when a page issues a request. The [request] object is read-only. In order to intercept and mutate requests, see `page.route(url, handler)` or `browserContext.route(url, handler)`.
   */
  waitForEvent(event: 'request', optionsOrPredicate?: { predicate?: (request: Request) => boolean, timeout?: number } | ((request: Request) => boolean)): Promise<Request>;

  /**
   * Emitted when a request fails, for example by timing out.
   * 
   * > **NOTE** HTTP Error responses, such as 404 or 503, are still successful responses from HTTP standpoint, so request will complete with `page.on('requestfinished')` event and not with `page.on('requestfailed')`.
   */
  waitForEvent(event: 'requestfailed', optionsOrPredicate?: { predicate?: (request: Request) => boolean, timeout?: number } | ((request: Request) => boolean)): Promise<Request>;

  /**
   * Emitted when a request finishes successfully after downloading the response body. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  waitForEvent(event: 'requestfinished', optionsOrPredicate?: { predicate?: (request: Request) => boolean, timeout?: number } | ((request: Request) => boolean)): Promise<Request>;

  /**
   * Emitted when [response] status and headers are received for a request. For a successful response, the sequence of events is `request`, `response` and `requestfinished`.
   */
  waitForEvent(event: 'response', optionsOrPredicate?: { predicate?: (response: Response) => boolean, timeout?: number } | ((response: Response) => boolean)): Promise<Response>;

  /**
   * Emitted when <WebSocket> request is sent.
   */
  waitForEvent(event: 'websocket', optionsOrPredicate?: { predicate?: (webSocket: WebSocket) => boolean, timeout?: number } | ((webSocket: WebSocket) => boolean)): Promise<WebSocket>;

  /**
   * Emitted when a dedicated WebWorker is spawned by the page.
   */
  waitForEvent(event: 'worker', optionsOrPredicate?: { predicate?: (worker: Worker) => boolean, timeout?: number } | ((worker: Worker) => boolean)): Promise<Worker>;


  /**
   * Returns when the required load state has been reached.
   * This resolves when the page reaches a required load state, `load` by default. The navigation must have been committed when this method is called. If current document has already reached the required state, resolves immediately.
   * ```js
   * await page.click('button'); // Click triggers navigation.
   * await page.waitForLoadState(); // The promise resolves after 'load' event.
   * ```
   * ```js
   * const [popup] = await Promise.all([
   *   page.waitForEvent('popup'),
   *   page.click('button'), // Click triggers a popup.
   * ])
   * await popup.waitForLoadState('domcontentloaded'); // The promise resolves after 'domcontentloaded' event.
   * console.log(await popup.title()); // Popup is ready to use.
   * ```
   * Shortcut for main frame's `frame.waitForLoadState([state, options])`.
   * @param state Optional load state to wait for, defaults to `load`. If the state has been already reached while loading current document, the method resolves immediately. Can be one of: - `'load'` - wait for the `load` event to be fired.
   * - `'domcontentloaded'` - wait for the `DOMContentLoaded` event to be fired.
   * - `'networkidle'` - wait until there are no network connections for at least `500` ms.
   * @param options 
   */
  waitForLoadState(state?: "domcontentloaded"|"load"|"networkidle", options?: {
    /**
     * Maximum operation time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultNavigationTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)`, `page.setDefaultNavigationTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns 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`.
   * This resolves when the page navigates to a new URL or reloads. It is useful for when you run code which will indirectly cause the page to navigate. e.g. The click target has an `onclick` handler that triggers navigation from a `setTimeout`. Consider this example:
   * ```js
   * const [response] = await Promise.all([
   *   page.waitForNavigation(), // The promise resolves after navigation has finished
   *   page.click('a.delayed-navigation'), // Clicking the link will indirectly cause a navigation
   * ]);
   * ```
   * **NOTE** Usage of the History API to change the URL is considered a navigation.
   * Shortcut for main frame's `frame.waitForNavigation([options])`.
   * @param options 
   */
  waitForNavigation(options?: {
    /**
     * Maximum operation time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultNavigationTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)`, `page.setDefaultNavigationTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;

    /**
     * A glob pattern, regex pattern or predicate receiving URL to match while waiting for the navigation.
     */
    url?: string|RegExp|Function;

    /**
     * When to consider operation succeeded, defaults to `load`. Events can be either:
     * - `'domcontentloaded'` - consider operation to be finished when the `DOMContentLoaded` event is fired.
     * - `'load'` - consider operation to be finished when the `load` event is fired.
     * - `'networkidle'` - consider operation to be finished when there are no network connections for at least `500` ms.
     */
    waitUntil?: "domcontentloaded"|"load"|"networkidle";
  }): Promise<null|Response>;

  /**
   * Waits for the matching request and returns it.
   * ```js
   * const firstRequest = await page.waitForRequest('http://example.com/resource');
   * const finalRequest = await page.waitForRequest(request => request.url() === 'http://example.com' && request.method() === 'GET');
   * return firstRequest.url();
   * ```
   * ```js
   * await page.waitForRequest(request => request.url().searchParams.get('foo') === 'bar' && request.url().searchParams.get('foo2') === 'bar2');
   * ```
   * @param urlOrPredicate Request URL string, regex or predicate receiving Request object.
   * @param options 
   */
  waitForRequest(urlOrPredicate: string|RegExp|Function, options?: {
    /**
     * Maximum wait time in milliseconds, defaults to 30 seconds, pass `0` to disable the timeout. The default value can be changed by using the `page.setDefaultTimeout(timeout)` method.
     */
    timeout?: number;
  }): Promise<Request>;

  /**
   * Returns the matched response.
   * ```js
   * const firstResponse = await page.waitForResponse('https://example.com/resource');
   * const finalResponse = await page.waitForResponse(response => response.url() === 'https://example.com' && response.status() === 200);
   * return finalResponse.ok();
   * ```
   * @param urlOrPredicate Request URL string, regex or predicate receiving Response object.
   * @param options 
   */
  waitForResponse(urlOrPredicate: string|RegExp|((response: Response) => boolean), options?: {
    /**
     * Maximum wait time in milliseconds, defaults to 30 seconds, pass `0` to disable the timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<Response>;

  /**
   * Waits for the given `timeout` in milliseconds.
   * Note that `page.waitForTimeout()` should only be used for debugging. Tests using the timer in production are going to be flaky. Use signals such as network events, selectors becoming visible and others instead.
   * ```js
   * // wait for 1 second
   * await page.waitForTimeout(1000);
   * ```
   * Shortcut for main frame's `frame.waitForTimeout(timeout)`.
   * @param timeout A timeout to wait for
   */
  waitForTimeout(timeout: number): Promise<void>;

  /**
   * This method returns all of the dedicated WebWorkers associated with the page.
   * 
   * > **NOTE** This does not contain ServiceWorkers
   */
  workers(): Array<Worker>;}

/**
 * At every point of time, page exposes its current frame tree via the `page.mainFrame()` and `frame.childFrames()` methods.
 * Frame object's lifecycle is controlled by three events, dispatched on the page object:
 * - `page.on('frameattached')` - fired when the frame gets attached to the page. A Frame can be attached to the page only once.
 * - `page.on('framenavigated')` - fired when the frame commits navigation to a different URL.
 * - `page.on('framedetached')` - fired when the frame gets detached from the page.  A Frame can be detached from the page only once.
 * An example of dumping frame tree:
 * ```js
 * const { firefox } = require('playwright');  // Or 'chromium' or 'webkit'.
 * 
 * (async () => {
 *   const browser = await firefox.launch();
 *   const page = await browser.newPage();
 *   await page.goto('https://www.google.com/chrome/browser/canary.html');
 *   dumpFrameTree(page.mainFrame(), '');
 *   await browser.close();
 * 
 *   function dumpFrameTree(frame, indent) {
 *     console.log(indent + frame.url());
 *     for (const child of frame.childFrames()) {
 *       dumpFrameTree(child, indent + '  ');
 *     }
 *   }
 * })();
 * ```
 * An example of getting text from an iframe element:
 * ```js
 * const frame = page.frames().find(frame => frame.name() === 'myframe');
 * const text = await frame.$eval('.selector', element => element.textContent);
 * console.log(text);
 * ```
 */
export interface Frame {
  /**
   * Returns the return value of `pageFunction`
   * If the function passed to the `frame.evaluate` returns a Promise, then `frame.evaluate` would wait for the promise to resolve and return its value.
   * If the function passed to the `frame.evaluate` returns a non-Serializable value, then `frame.evaluate` returns `undefined`. DevTools Protocol also supports transferring some additional values that are not serializable by `JSON`: `-0`, `NaN`, `Infinity`, `-Infinity`, and bigint literals.
   * ```js
   * const result = await frame.evaluate(([x, y]) => {
   *   return Promise.resolve(x * y);
   * }, [7, 8]);
   * console.log(result); // prints "56"
   * ```
   * A string can also be passed in instead of a function.
   * ```js
   * console.log(await frame.evaluate('1 + 2')); // prints "3"
   * ```
   * ElementHandle instances can be passed as an argument to the `frame.evaluate`:
   * ```js
   * const bodyHandle = await frame.$('body');
   * const html = await frame.evaluate(([body, suffix]) => body.innerHTML + suffix, [bodyHandle, 'hello']);
   * await bodyHandle.dispose();
   * ```
   * @param pageFunction Function to be evaluated in browser context
   * @param arg Optional argument to pass to `pageFunction`
   */
  evaluate<R, Arg>(pageFunction: PageFunction<Arg, R>, arg: Arg): Promise<R>;
  evaluate<R>(pageFunction: PageFunction<void, R>, arg?: any): Promise<R>;

  /**
   * Returns the return value of `pageFunction` as in-page object (JSHandle).
   * The only difference between `frame.evaluate` and `frame.evaluateHandle` is that `frame.evaluateHandle` returns in-page object (JSHandle).
   * If the function, passed to the `frame.evaluateHandle`, returns a Promise, then `frame.evaluateHandle` would wait for the promise to resolve and return its value.
   * ```js
   * const aWindowHandle = await frame.evaluateHandle(() => Promise.resolve(window));
   * aWindowHandle; // Handle for the window object.
   * ```
   * A string can also be passed in instead of a function.
   * ```js
   * const aHandle = await frame.evaluateHandle('document'); // Handle for the 'document'.
   * ```
   * JSHandle instances can be passed as an argument to the `frame.evaluateHandle`:
   * ```js
   * const aHandle = await frame.evaluateHandle(() => document.body);
   * const resultHandle = await frame.evaluateHandle(([body, suffix]) => body.innerHTML + suffix, [aHandle, 'hello']);
   * console.log(await resultHandle.jsonValue());
   * await resultHandle.dispose();
   * ```
   * @param pageFunction Function to be evaluated in the page context
   * @param arg Optional argument to pass to `pageFunction`
   */
  evaluateHandle<R, Arg>(pageFunction: PageFunction<Arg, R>, arg: Arg): Promise<SmartHandle<R>>;
  evaluateHandle<R>(pageFunction: PageFunction<void, R>, arg?: any): Promise<SmartHandle<R>>;

  /**
   * Returns the ElementHandle pointing to the frame element.
   * The method finds an element matching the specified selector within the frame. See Working with selectors for more details. If no elements match the selector, returns `null`.
   * @param selector A selector to query for. See working with selectors for more details.
   */
  $<K extends keyof HTMLElementTagNameMap>(selector: K): Promise<ElementHandleForTag<K> | null>;
  $(selector: string): Promise<ElementHandle<SVGElement | HTMLElement> | null>;

  /**
   * Returns the ElementHandles pointing to the frame elements.
   * The method finds all elements matching the specified selector within the frame. See Working with selectors for more details. If no elements match the selector, returns empty array.
   * @param selector A selector to query for. See working with selectors for more details.
   */
  $$<K extends keyof HTMLElementTagNameMap>(selector: K): Promise<ElementHandleForTag<K>[]>;
  $$(selector: string): Promise<ElementHandle<SVGElement | HTMLElement>[]>;

  /**
   * Returns the return value of `pageFunction`
   * The method finds an element matching the specified selector within the frame and passes it as a first argument to `pageFunction`. See Working with selectors for more details. If no elements match the selector, the method throws an error.
   * If `pageFunction` returns a Promise, then `frame.$eval` would wait for the promise to resolve and return its value.
   * Examples:
   * ```js
   * const searchValue = await frame.$eval('#search', el => el.value);
   * const preloadHref = await frame.$eval('link[rel=preload]', el => el.href);
   * const html = await frame.$eval('.main-container', (e, suffix) => e.outerHTML + suffix, 'hello');
   * ```
   * @param selector A selector to query for. See working with selectors for more details.
   * @param pageFunction Function to be evaluated in browser context
   * @param arg Optional argument to pass to `pageFunction`
   */
  $eval<K extends keyof HTMLElementTagNameMap, R, Arg>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K], Arg, R>, arg: Arg): Promise<R>;
  $eval<R, Arg, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E, Arg, R>, arg: Arg): Promise<R>;
  $eval<K extends keyof HTMLElementTagNameMap, R>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K], void, R>, arg?: any): Promise<R>;
  $eval<R, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E, void, R>, arg?: any): Promise<R>;

  /**
   * Returns the return value of `pageFunction`
   * The method finds all elements matching the specified selector within the frame and passes an array of matched elements as a first argument to `pageFunction`. See Working with selectors for more details.
   * If `pageFunction` returns a Promise, then `frame.$$eval` would wait for the promise to resolve and return its value.
   * Examples:
   * ```js
   * const divsCounts = await frame.$$eval('div', (divs, min) => divs.length >= min, 10);
   * ```
   * @param selector A selector to query for. See working with selectors for more details.
   * @param pageFunction Function to be evaluated in browser context
   * @param arg Optional argument to pass to `pageFunction`
   */
  $$eval<K extends keyof HTMLElementTagNameMap, R, Arg>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K][], Arg, R>, arg: Arg): Promise<R>;
  $$eval<R, Arg, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E[], Arg, R>, arg: Arg): Promise<R>;
  $$eval<K extends keyof HTMLElementTagNameMap, R>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K][], void, R>, arg?: any): Promise<R>;
  $$eval<R, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E[], void, R>, arg?: any): Promise<R>;

  /**
   * Returns when the `pageFunction` returns a truthy value, returns that value.
   * The `waitForFunction` can be used to observe viewport size change:
   * ```js
   * const { firefox } = require('playwright');  // Or 'chromium' or 'webkit'.
   * 
   * (async () => {
   *   const browser = await firefox.launch();
   *   const page = await browser.newPage();
   *   const watchDog = page.mainFrame().waitForFunction('window.innerWidth < 100');
   *   page.setViewportSize({width: 50, height: 50});
   *   await watchDog;
   *   await browser.close();
   * })();
   * ```
   * To pass an argument to the predicate of `frame.waitForFunction` function:
   * ```js
   * const selector = '.foo';
   * await frame.waitForFunction(selector => !!document.querySelector(selector), selector);
   * ```
   * @param pageFunction Function to be evaluated in browser context
   * @param arg Optional argument to pass to `pageFunction`
   * @param options 
   */
  waitForFunction<R, Arg>(pageFunction: PageFunction<Arg, R>, arg: Arg, options?: PageWaitForFunctionOptions): Promise<SmartHandle<R>>;
  waitForFunction<R>(pageFunction: PageFunction<void, R>, arg?: any, options?: PageWaitForFunctionOptions): Promise<SmartHandle<R>>;

  /**
   * Returns when element specified by selector satisfies `state` option. Returns `null` if waiting for `hidden` or `detached`.
   * Wait for the `selector` to satisfy `state` option (either appear/disappear from dom, or become visible/hidden). If at the moment of calling the method `selector` already satisfies the condition, the method will return immediately. If the selector doesn't satisfy the condition for the `timeout` milliseconds, the function will throw.
   * This method works across navigations:
   * ```js
   * const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.
   * 
   * (async () => {
   *   const browser = await webkit.launch();
   *   const page = await browser.newPage();
   *   let currentURL;
   *   page.mainFrame()
   *     .waitForSelector('img')
   *     .then(() => console.log('First URL with image: ' + currentURL));
   *   for (currentURL of ['https://example.com', 'https://google.com', 'https://bbc.com']) {
   *     await page.goto(currentURL);
   *   }
   *   await browser.close();
   * })();
   * ```
   * @param selector A selector to query for. See working with selectors for more details.
   * @param options 
   */
  waitForSelector<K extends keyof HTMLElementTagNameMap>(selector: K, options?: PageWaitForSelectorOptionsNotHidden): Promise<ElementHandleForTag<K>>;
  waitForSelector(selector: string, options?: PageWaitForSelectorOptionsNotHidden): Promise<ElementHandle<SVGElement | HTMLElement>>;
  waitForSelector<K extends keyof HTMLElementTagNameMap>(selector: K, options: PageWaitForSelectorOptions): Promise<ElementHandleForTag<K> | null>;
  waitForSelector(selector: string, options: PageWaitForSelectorOptions): Promise<null|ElementHandle<SVGElement | HTMLElement>>;
  /**
   * Returns the added tag when the script's onload fires or when the script content was injected into frame.
   * Adds a `<script>` tag into the page with the desired url or content.
   * @param params 
   */
  addScriptTag(params: {
    /**
     * URL of a script to be added.
     */
    url?: string;

    /**
     * Path to the JavaScript file to be injected into frame. If `path` is a relative path, then it is resolved relative to the current working directory.
     */
    path?: string;

    /**
     * Raw JavaScript content to be injected into frame.
     */
    content?: string;

    /**
     * Script type. Use 'module' in order to load a Javascript ES6 module. See script for more details.
     */
    type?: string;
  }): Promise<ElementHandle>;

  /**
   * Returns the added tag when the stylesheet's onload fires or when the CSS content was injected into frame.
   * Adds a `<link rel="stylesheet">` tag into the page with the desired url or a `<style type="text/css">` tag with the content.
   * @param params 
   */
  addStyleTag(params: {
    /**
     * URL of the `<link>` tag.
     */
    url?: string;

    /**
     * Path to the CSS file to be injected into frame. If `path` is a relative path, then it is resolved relative to the current working directory.
     */
    path?: string;

    /**
     * Raw CSS content to be injected into frame.
     */
    content?: string;
  }): Promise<ElementHandle>;

  /**
   * This method checks an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Ensure that matched element is a checkbox or a radio input. If not, this method rejects. If the element is already checked, this method returns immediately.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.mouse to click in the center of the element.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * - Ensure that the element is now checked. If not, this method rejects.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  check(selector: string, options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  childFrames(): Array<Frame>;

  /**
   * This method clicks an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.mouse to click in the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  click(selector: string, options?: {
    /**
     * Defaults to `left`.
     */
    button?: "left"|"middle"|"right";

    /**
     * defaults to 1. See UIEvent.detail.
     */
    clickCount?: number;

    /**
     * Time to wait between `mousedown` and `mouseup` in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Gets the full HTML contents of the frame, including the doctype.
   */
  content(): Promise<string>;

  /**
   * This method double clicks an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.mouse to double click in the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set. Note that if the first click of the `dblclick()` triggers a navigation event, this method will reject.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * 
   * > **NOTE** `frame.dblclick()` dispatches two `click` events and a single `dblclick` event.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  dblclick(selector: string, options?: {
    /**
     * Defaults to `left`.
     */
    button?: "left"|"middle"|"right";

    /**
     * Time to wait between `mousedown` and `mouseup` in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * The snippet below dispatches the `click` event on the element. Regardless of the visibility state of the elment, `click` is dispatched. This is equivalend to calling element.click().
   * ```js
   * await frame.dispatchEvent('button#submit', 'click');
   * ```
   * Under the hood, it creates an instance of an event based on the given `type`, initializes it with `eventInit` properties and dispatches it on the element. Events are `composed`, `cancelable` and bubble by default.
   * Since `eventInit` is event-specific, please refer to the events documentation for the lists of initial properties:
   * - DragEvent
   * - FocusEvent
   * - KeyboardEvent
   * - MouseEvent
   * - PointerEvent
   * - TouchEvent
   * - Event
   * You can also specify `JSHandle` as the property value if you want live objects to be passed into the event:
   * ```js
   * // Note you can only create DataTransfer in Chromium and Firefox
   * const dataTransfer = await frame.evaluateHandle(() => new DataTransfer());
   * await frame.dispatchEvent('#source', 'dragstart', { dataTransfer });
   * ```
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param type DOM event type: `"click"`, `"dragstart"`, etc.
   * @param eventInit Optional event-specific initialization properties.
   * @param options 
   */
  dispatchEvent(selector: string, type: string, eventInit?: EvaluationArgument, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * This method waits for an element matching `selector`, waits for actionability checks, focuses the element, fills it and triggers an `input` event after filling. If the element matching `selector` is not an `<input>`, `<textarea>` or `[contenteditable]` element, this method throws an error. Note that you can pass an empty string to clear the input field.
   * To send fine-grained keyboard events, use `frame.type(selector, text[, options])`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param value Value to fill for the `<input>`, `<textarea>` or `[contenteditable]` element.
   * @param options 
   */
  fill(selector: string, value: string, options?: {
    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * This method fetches an element with `selector` and focuses it. If there's no element matching `selector`, the method waits until a matching element appears in the DOM.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  focus(selector: string, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns the `frame` or `iframe` element handle which corresponds to this frame.
   * This is an inverse of `elementHandle.contentFrame()`. Note that returned handle actually belongs to the parent frame.
   * This method throws an error if the frame has been detached before `frameElement()` returns.
   * ```js
   * const frameElement = await frame.frameElement();
   * const contentFrame = await frameElement.contentFrame();
   * console.log(frame === contentFrame);  // -> true
   * ```
   */
  frameElement(): Promise<ElementHandle>;

  /**
   * Returns element attribute value.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param name Attribute name to get the value for.
   * @param options 
   */
  getAttribute(selector: string, name: string, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<null|string>;

  /**
   * Returns the main resource response. In case of multiple redirects, the navigation will resolve with the response of the last redirect.
   * `frame.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.
   * `frame.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** `frame.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 upstream issue.
   * @param url URL to navigate frame to. The url should include scheme, e.g. `https://`.
   * @param options 
   */
  goto(url: string, options?: {
    /**
     * Referer header value. If provided it will take preference over the referer header value set by `page.setExtraHTTPHeaders(headers)`.
     */
    referer?: string;

    /**
     * Maximum operation time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultNavigationTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)`, `page.setDefaultNavigationTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;

    /**
     * When to consider operation succeeded, defaults to `load`. Events can be either:
     * - `'domcontentloaded'` - consider operation to be finished when the `DOMContentLoaded` event is fired.
     * - `'load'` - consider operation to be finished when the `load` event is fired.
     * - `'networkidle'` - consider operation to be finished when there are no network connections for at least `500` ms.
     */
    waitUntil?: "domcontentloaded"|"load"|"networkidle";
  }): Promise<null|Response>;

  /**
   * This method hovers over an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.mouse to hover over the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  hover(selector: string, options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns `element.innerHTML`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  innerHTML(selector: string, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<string>;

  /**
   * Returns `element.innerText`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  innerText(selector: string, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<string>;

  /**
   * Returns `true` if the frame has been detached, or `false` otherwise.
   */
  isDetached(): boolean;

  /**
   * Returns frame's name attribute as specified in the tag.
   * If the name is empty, returns the id attribute instead.
   * 
   * > **NOTE** This value is calculated once when the frame is created, and will not update if the attribute is changed later.
   */
  name(): string;

  /**
   * Returns the page containing this frame.
   */
  page(): Page;

  /**
   * Parent frame, if any. Detached frames and main frames return `null`.
   */
  parentFrame(): null|Frame;

  /**
   * `key` can specify the intended keyboardEvent.key value or a single character to generate the text for. A superset of the `key` values can be found here. Examples of the keys are:
   * `F1` - `F12`, `Digit0`- `Digit9`, `KeyA`- `KeyZ`, `Backquote`, `Minus`, `Equal`, `Backslash`, `Backspace`, `Tab`, `Delete`, `Escape`, `ArrowDown`, `End`, `Enter`, `Home`, `Insert`, `PageDown`, `PageUp`, `ArrowRight`, `ArrowUp`, etc.
   * Following modification shortcuts are also supported: `Shift`, `Control`, `Alt`, `Meta`, `ShiftLeft`.
   * Holding down `Shift` will type the text that corresponds to the `key` in the upper case.
   * If `key` is a single character, it is case-sensitive, so the values `a` and `A` will generate different respective texts.
   * Shortcuts such as `key: "Control+o"` or `key: "Control+Shift+T"` are supported as well. When speficied with the modifier, modifier is pressed and being held while the subsequent key is being pressed.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param key Name of the key to press or a character to generate, such as `ArrowLeft` or `a`.
   * @param options 
   */
  press(selector: string, key: string, options?: {
    /**
     * Time to wait between `keydown` and `keyup` in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns the array of option values that have been successfully selected.
   * Triggers a `change` and `input` event once all the provided options have been selected. If there's no `<select>` element matching `selector`, the method throws an error.
   * ```js
   * // single selection matching the value
   * frame.selectOption('select#colors', 'blue');
   * 
   * // single selection matching both the value and the label
   * frame.selectOption('select#colors', { label: 'Blue' });
   * 
   * // multiple selection
   * frame.selectOption('select#colors', 'red', 'green', 'blue');
   * ```
   * @param selector A selector to query for. See working with selectors for more details.
   * @param values Options to select. If the `<select>` has the `multiple` attribute, all matching options are selected, otherwise only the first option matching one of the passed options is selected. String values are equivalent to `{value:'string'}`. Option is considered matching if all specified properties match.
   * @param options 
   */
  selectOption(selector: string, values: null|string|ElementHandle|Array<string>|{
    /**
     * Matches by `option.value`.
     */
    value?: string;

    /**
     * Matches by `option.label`.
     */
    label?: string;

    /**
     * Matches by the index.
     */
    index?: number;
  }|Array<ElementHandle>|Array<{
    /**
     * Matches by `option.value`.
     */
    value?: string;

    /**
     * Matches by `option.label`.
     */
    label?: string;

    /**
     * Matches by the index.
     */
    index?: number;
  }>, options?: {
    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<Array<string>>;

  /**
   * @param html HTML markup to assign to the page.
   * @param options 
   */
  setContent(html: string, options?: {
    /**
     * Maximum operation time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultNavigationTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)`, `page.setDefaultNavigationTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;

    /**
     * When to consider operation succeeded, defaults to `load`. Events can be either:
     * - `'domcontentloaded'` - consider operation to be finished when the `DOMContentLoaded` event is fired.
     * - `'load'` - consider operation to be finished when the `load` event is fired.
     * - `'networkidle'` - consider operation to be finished when there are no network connections for at least `500` ms.
     */
    waitUntil?: "domcontentloaded"|"load"|"networkidle";
  }): Promise<void>;

  /**
   * This method expects `selector` to point to an input element.
   * Sets the value of the file input to these file paths or files. If some of the `filePaths` are relative paths, then they are resolved relative to the the current working directory. For empty array, clears the selected files.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param files 
   * @param options 
   */
  setInputFiles(selector: string, files: string|Array<string>|{
    /**
     * File name **required**
     */
    name: string;

    /**
     * File type **required**
     */
    mimeType: string;

    /**
     * File content **required**
     */
    buffer: Buffer;
  }|Array<{
    /**
     * File name **required**
     */
    name: string;

    /**
     * File type **required**
     */
    mimeType: string;

    /**
     * File content **required**
     */
    buffer: Buffer;
  }>, options?: {
    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * This method taps an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.touchscreen to tap the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * 
   * > **NOTE** `frame.tap()` requires that the `hasTouch` option of the browser context be set to true.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  tap(selector: string, options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns `element.textContent`.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  textContent(selector: string, options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<null|string>;

  /**
   * Returns the page title.
   */
  title(): Promise<string>;

  /**
   * Sends a `keydown`, `keypress`/`input`, and `keyup` event for each character in the text. `frame.type` can be used to send fine-grained keyboard events. To fill values in form fields, use `frame.fill(selector, value[, options])`.
   * To press a special key, like `Control` or `ArrowDown`, use `keyboard.press(key[, options])`.
   * ```js
   * await frame.type('#mytextarea', 'Hello'); // Types instantly
   * await frame.type('#mytextarea', 'World', {delay: 100}); // Types slower, like a user
   * ```
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param text A text to type into a focused element.
   * @param options 
   */
  type(selector: string, text: string, options?: {
    /**
     * Time to wait between key presses in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * This method checks an element matching `selector` by performing the following steps:
   * - Find an element match matching `selector`. If there is none, wait until a matching element is attached to the DOM.
   * - Ensure that matched element is a checkbox or a radio input. If not, this method rejects. If the element is already unchecked, this method returns immediately.
   * - Wait for actionability checks on the matched element, unless `force` option is set. If the element is detached during the checks, the whole action is retried.
   * - Scroll the element into view if needed.
   * - Use page.mouse to click in the center of the element.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * - Ensure that the element is now unchecked. If not, this method rejects.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * @param selector A selector to search for element. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
   * @param options 
   */
  uncheck(selector: string, options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns frame's url.
   */
  url(): string;

  /**
   * Waits for the required load state to be reached.
   * This returns when the frame reaches a required load state, `load` by default. The navigation must have been committed when this method is called. If current document has already reached the required state, resolves immediately.
   * ```js
   * await frame.click('button'); // Click triggers navigation.
   * await frame.waitForLoadState(); // Waits for 'load' state by default.
   * ```
   * @param state Optional load state to wait for, defaults to `load`. If the state has been already reached while loading current document, the method returns immediately. Can be one of: - `'load'` - wait for the `load` event to be fired.
   * - `'domcontentloaded'` - wait for the `DOMContentLoaded` event to be fired.
   * - `'networkidle'` - wait until there are no network connections for at least `500` ms.
   * @param options 
   */
  waitForLoadState(state?: "domcontentloaded"|"load"|"networkidle", options?: {
    /**
     * Maximum operation time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultNavigationTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)`, `page.setDefaultNavigationTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns 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`.
   * This method waits for the frame to navigate to a new URL. It is useful for when you run code which will indirectly cause the frame to navigate. Consider this example:
   * ```js
   * const [response] = await Promise.all([
   *   frame.waitForNavigation(), // Wait for the navigation to finish
   *   frame.click('a.my-link'), // Clicking the link will indirectly cause a navigation
   * ]);
   * ```
   * **NOTE** Usage of the History API to change the URL is considered a navigation.
   * @param options 
   */
  waitForNavigation(options?: {
    /**
     * Maximum operation time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultNavigationTimeout(timeout)`, `browserContext.setDefaultTimeout(timeout)`, `page.setDefaultNavigationTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;

    /**
     * URL string, URL regex pattern or predicate receiving URL to match while waiting for the navigation.
     */
    url?: string|RegExp|Function;

    /**
     * When to consider operation succeeded, defaults to `load`. Events can be either:
     * - `'domcontentloaded'` - consider operation to be finished when the `DOMContentLoaded` event is fired.
     * - `'load'` - consider operation to be finished when the `load` event is fired.
     * - `'networkidle'` - consider operation to be finished when there are no network connections for at least `500` ms.
     */
    waitUntil?: "domcontentloaded"|"load"|"networkidle";
  }): Promise<null|Response>;

  /**
   * Waits for the given `timeout` in milliseconds.
   * Note that `frame.waitForTimeout()` should only be used for debugging. Tests using the timer in production are going to be flaky. Use signals such as network events, selectors becoming visible and others instead.
   * @param timeout A timeout to wait for
   */
  waitForTimeout(timeout: number): Promise<void>;}

/**
 * BrowserContexts provide a way to operate multiple independent browser sessions.
 * If a page opens another page, e.g. with a `window.open` call, the popup will belong to the parent page's browser context.
 * Playwright allows creation of "incognito" browser contexts with `browser.newContext()` method. "Incognito" browser contexts don't write any browsing data to disk.
 * ```js
 * // Create a new incognito browser context
 * const context = await browser.newContext();
 * // Create a new page inside context.
 * const page = await context.newPage();
 * await page.goto('https://example.com');
 * // Dispose context once it's no longer needed.
 * await context.close();
 * ```
 */
export interface BrowserContext {
  /**
   * The method adds a function called `name` on the `window` object of every frame in every page in the context. When called, the function executes `playwrightBinding` and returns a Promise which resolves to the return value of `playwrightBinding`. If the `playwrightBinding` returns a Promise, it will be awaited.
   * The first argument of the `playwrightBinding` function contains information about the caller: `{ browserContext: BrowserContext, page: Page, frame: Frame }`.
   * See `page.exposeBinding(name, playwrightBinding[, options])` for page-only version.
   * An example of exposing page URL to all frames in all pages in the context:
   * ```js
   * const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.
   * 
   * (async () => {
   *   const browser = await webkit.launch({ headless: false });
   *   const context = await browser.newContext();
   *   await context.exposeBinding('pageURL', ({ page }) => page.url());
   *   const page = await context.newPage();
   *   await page.setContent(`
   *     <script>
   *       async function onClick() {
   *         document.querySelector('div').textContent = await window.pageURL();
   *       }
   *     </script>
   *     <button onclick="onClick()">Click me</button>
   *     <div></div>
   *   `);
   *   await page.click('button');
   * })();
   * ```
   * An example of passing an element handle:
   * ```js
   * await context.exposeBinding('clicked', async (source, element) => {
   *   console.log(await element.textContent());
   * }, { handle: true });
   * await page.setContent(`
   *   <script>
   *     document.addEventListener('click', event => window.clicked(event.target));
   *   </script>
   *   <div>Click me</div>
   *   <div>Or click me</div>
   * `);
   * ```
   * @param name Name of the function on the window object.
   * @param playwrightBinding Callback function that will be called in the Playwright's context.
   * @param options 
   */
  exposeBinding(name: string, playwrightBinding: (source: BindingSource, arg: JSHandle) => any, options: { handle: true }): Promise<void>;
  exposeBinding(name: string, playwrightBinding: (source: BindingSource, ...args: any[]) => any, options?: { handle?: boolean }): Promise<void>;
  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  on(event: 'close', listener: () => void): this;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  on(event: 'page', listener: (page: Page) => void): this;

  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  once(event: 'close', listener: () => void): this;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  once(event: 'page', listener: (page: Page) => void): this;

  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  addListener(event: 'close', listener: () => void): this;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  addListener(event: 'page', listener: (page: Page) => void): this;

  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  removeListener(event: 'close', listener: () => void): this;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  removeListener(event: 'page', listener: (page: Page) => void): this;

  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  off(event: 'close', listener: () => void): this;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  off(event: 'page', listener: (page: Page) => void): this;

  /**
   * Adds cookies into this browser context. All pages within this context will have these cookies installed. Cookies can be obtained via `browserContext.cookies([urls])`.
   * ```js
   * await browserContext.addCookies([cookieObject1, cookieObject2]);
   * ```
   * @param cookies 
   */
  addCookies(cookies: Array<{
    /**
     * **required**
     */
    name: string;

    /**
     * **required**
     */
    value: string;

    /**
     * either url or domain / path are required.
     */
    url?: string;

    /**
     * either url or domain / path are required Optional.
     */
    domain?: string;

    /**
     * either url or domain / path are required Optional.
     */
    path?: string;

    /**
     * Unix time in seconds.
     */
    expires?: number;

    /**
     * Optional.
     */
    httpOnly?: boolean;

    /**
     * Optional.
     */
    secure?: boolean;

    /**
     * Optional.
     */
    sameSite?: "Lax"|"None"|"Strict";
  }>): Promise<void>;

  /**
   * Adds a script which would be evaluated in one of the following scenarios:
   * - Whenever a page is created in the browser context or is navigated.
   * - Whenever a child frame is attached or navigated in any page in the browser context. In this case, the script is evaluated in the context of the newly attached frame.
   * The script is evaluated 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`.
   * An example of overriding `Math.random` before the page loads:
   * ```js
   * // preload.js
   * Math.random = () => 42;
   * ```
   * ```js
   * // In your playwright script, assuming the preload.js file is in same directory.
   * await browserContext.addInitScript({
   *   path: 'preload.js'
   * });
   * ```
   * 
   * > **NOTE** The order of evaluation of multiple scripts installed via `browserContext.addInitScript(script[, arg])` and `page.addInitScript(script[, arg])` is not defined.
   * @param script Script to be evaluated in all pages in the browser context.
   * @param arg Optional argument to pass to `script` (only supported when passing a function).
   */
  addInitScript(script: Function|string|{
    /**
     * Path to the JavaScript file. If `path` is a relative path, then it is resolved relative to the current working directory.
     */
    path?: string;

    /**
     * Raw script content.
     */
    content?: string;
  }, arg?: Serializable): Promise<void>;

  /**
   * Returns the browser instance of the context. If it was launched as a persistent context null gets returned.
   */
  browser(): null|Browser;

  /**
   * Clears context cookies.
   */
  clearCookies(): Promise<void>;

  /**
   * Clears all permission overrides for the browser context.
   * ```js
   * const context = await browser.newContext();
   * await context.grantPermissions(['clipboard-read']);
   * // do stuff ..
   * context.clearPermissions();
   * ```
   */
  clearPermissions(): Promise<void>;

  /**
   * Closes the browser context. All the pages that belong to the browser context will be closed.
   * 
   * > **NOTE** the default browser context cannot be closed.
   */
  close(): Promise<void>;

  /**
   * If no URLs are specified, this method returns all cookies. If URLs are specified, only cookies that affect those URLs are returned.
   * @param urls Optional list of URLs.
   */
  cookies(urls?: string|Array<string>): Promise<Array<Cookie>>;

  /**
   * The method adds a function called `name` on the `window` object of every frame in every page in the context. When called, the function executes `playwrightFunction` and returns a Promise which resolves to the return value of `playwrightFunction`.
   * If the `playwrightFunction` returns a Promise, it will be awaited.
   * See `page.exposeFunction(name, playwrightFunction)` for page-only version.
   * An example of adding an `md5` function to all pages in the context:
   * ```js
   * const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.
   * const crypto = require('crypto');
   * 
   * (async () => {
   *   const browser = await webkit.launch({ headless: false });
   *   const context = await browser.newContext();
   *   await context.exposeFunction('md5', text => crypto.createHash('md5').update(text).digest('hex'));
   *   const page = await context.newPage();
   *   await page.setContent(`
   *     <script>
   *       async function onClick() {
   *         document.querySelector('div').textContent = await window.md5('PLAYWRIGHT');
   *       }
   *     </script>
   *     <button onclick="onClick()">Click me</button>
   *     <div></div>
   *   `);
   *   await page.click('button');
   * })();
   * ```
   * @param name Name of the function on the window object.
   * @param playwrightFunction Callback function that will be called in the Playwright's context.
   */
  exposeFunction(name: string, playwrightFunction: Function): Promise<void>;

  /**
   * Grants specified permissions to the browser context. Only grants corresponding permissions to the given origin if specified.
   * @param permissions A permission or an array of permissions to grant. Permissions can be one of the following values: - `'geolocation'`
   * - `'midi'`
   * - `'midi-sysex'` (system-exclusive midi)
   * - `'notifications'`
   * - `'push'`
   * - `'camera'`
   * - `'microphone'`
   * - `'background-sync'`
   * - `'ambient-light-sensor'`
   * - `'accelerometer'`
   * - `'gyroscope'`
   * - `'magnetometer'`
   * - `'accessibility-events'`
   * - `'clipboard-read'`
   * - `'clipboard-write'`
   * - `'payment-handler'`
   * @param options 
   */
  grantPermissions(permissions: Array<string>, options?: {
    /**
     * The origin to grant permissions to, e.g. "https://example.com".
     */
    origin?: string;
  }): Promise<void>;

  /**
   * Creates a new page in the browser context.
   */
  newPage(): Promise<Page>;

  /**
   * Returns all open pages in the context. Non visible pages, such as `"background_page"`, will not be listed here. You can find them using `chromiumBrowserContext.backgroundPages()`.
   */
  pages(): Array<Page>;

  /**
   * Routing provides the capability to modify network requests that are made by any page in the browser context. Once route is enabled, every request matching the url pattern will stall unless it's continued, fulfilled or aborted.
   * An example of a naïve handler that aborts all image requests:
   * ```js
   * const context = await browser.newContext();
   * await context.route('**\/*.{png,jpg,jpeg}', route => route.abort());
   * const page = await context.newPage();
   * await page.goto('https://example.com');
   * await browser.close();
   * ```
   * or the same snippet using a regex pattern instead:
   * ```js
   * const context = await browser.newContext();
   * await context.route(/(\.png$)|(\.jpg$)/, route => route.abort());
   * const page = await context.newPage();
   * await page.goto('https://example.com');
   * await browser.close();
   * ```
   * Page routes (set up with `page.route(url, handler)`) take precedence over browser context routes when request matches both handlers.
   * 
   * > **NOTE** Enabling routing disables http cache.
   * @param url A glob pattern, regex pattern or predicate receiving URL to match while routing.
   * @param handler handler function to route the request.
   */
  route(url: string|RegExp|((url: URL) => boolean), handler: ((route: Route, request: Request) => void)): Promise<void>;

  /**
   * This setting will change the default maximum navigation time for the following methods and related shortcuts:
   * - `page.goBack([options])`
   * - `page.goForward([options])`
   * - `page.goto(url[, options])`
   * - `page.reload([options])`
   * - `page.setContent(html[, options])`
   * - `page.waitForNavigation([options])`
   * 
   * > **NOTE** `page.setDefaultNavigationTimeout(timeout)` and `page.setDefaultTimeout(timeout)` take priority over `browserContext.setDefaultNavigationTimeout(timeout)`.
   * @param timeout Maximum navigation time in milliseconds
   */
  setDefaultNavigationTimeout(timeout: number): void;

  /**
   * This setting will change the default maximum time for all the methods accepting `timeout` option.
   * 
   * > **NOTE** `page.setDefaultNavigationTimeout(timeout)`, `page.setDefaultTimeout(timeout)` and `browserContext.setDefaultNavigationTimeout(timeout)` take priority over `browserContext.setDefaultTimeout(timeout)`.
   * @param timeout Maximum time in milliseconds
   */
  setDefaultTimeout(timeout: number): void;

  /**
   * The extra HTTP headers will be sent with every request initiated by any page in the context. These headers are merged with page-specific extra HTTP headers set with `page.setExtraHTTPHeaders(headers)`. If page overrides a particular header, page-specific header value will be used instead of the browser context header value.
   * 
   * > **NOTE** `browserContext.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: { [key: string]: string; }): Promise<void>;

  /**
   * Sets the context's geolocation. Passing `null` or `undefined` emulates position unavailable.
   * ```js
   * await browserContext.setGeolocation({latitude: 59.95, longitude: 30.31667});
   * ```
   * 
   * > **NOTE** Consider using `browserContext.grantPermissions(permissions[, options])` to grant permissions for the browser context pages to read its geolocation.
   * @param geolocation 
   */
  setGeolocation(geolocation: null|{
    /**
     * Latitude between -90 and 90. **required**
     */
    latitude: number;

    /**
     * Longitude between -180 and 180. **required**
     */
    longitude: number;

    /**
     * Non-negative accuracy value. Defaults to `0`.
     */
    accuracy?: number;
  }): Promise<void>;

  /**
   * Provide credentials for HTTP authentication.
   * 
   * > **NOTE** Browsers may cache credentials after successful authentication. Passing different credentials or passing `null` to disable authentication will be unreliable. To remove or replace credentials, create a new browser context instead.
   * @param httpCredentials 
   */
  setHTTPCredentials(httpCredentials: null|{
    /**
     * **required**
     */
    username: string;

    /**
     * **required**
     */
    password: string;
  }): Promise<void>;

  /**
   * @param offline Whether to emulate network being offline for the browser context.
   */
  setOffline(offline: boolean): Promise<void>;

  /**
   * Returns storage state for this browser context, contains current cookies and local storage snapshot.
   * @param options 
   */
  storageState(options?: {
    /**
     * The file path to save the storage state to. If `path` is a relative path, then it is resolved relative to current working directory. If no path is provided, storage state is still returned, but won't be saved to the disk.
     */
    path?: string;
  }): Promise<{
    cookies: Array<{
      name: string;

      value: string;

      domain: string;

      path: string;

      /**
       * Unix time in seconds.
       */
      expires: number;

      httpOnly: boolean;

      secure: boolean;

      sameSite: "Lax"|"None"|"Strict";
    }>;

    origins: Array<{
      origin: string;

      localStorage: Array<{
        name: string;

        value: string;
      }>;
    }>;
  }>;

  /**
   * Removes a route created with `browserContext.route(url, handler)`. When `handler` is not specified, removes all routes for the `url`.
   * @param url A glob pattern, regex pattern or predicate receiving URL used to register a routing with `browserContext.route(url, handler)`.
   * @param handler Optional handler function used to register a routing with `browserContext.route(url, handler)`.
   */
  unroute(url: string|RegExp|((url: URL) => boolean), handler?: ((route: Route, request: Request) => void)): Promise<void>;

  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  waitForEvent(event: 'close', optionsOrPredicate?: { predicate?: () => boolean, timeout?: number } | (() => boolean)): Promise<void>;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  waitForEvent(event: 'page', optionsOrPredicate?: { predicate?: (page: Page) => boolean, timeout?: number } | ((page: Page) => boolean)): Promise<Page>;
}

/**
 * The Worker class represents a WebWorker. `worker` event is emitted on the page object to signal a worker creation. `close` event is emitted on the worker object when the worker is gone.
 * ```js
 * page.on('worker', worker => {
 *   console.log('Worker created: ' + worker.url());
 *   worker.on('close', worker => console.log('Worker destroyed: ' + worker.url()));
 * });
 * 
 * console.log('Current workers:');
 * for (const worker of page.workers())
 *   console.log('  ' + worker.url());
 * ```
 */
export interface Worker {
  /**
   * Returns the return value of `pageFunction`
   * If the function passed to the `worker.evaluate` returns a Promise, then `worker.evaluate` would wait for the promise to resolve and return its value.
   * If the function passed to the `worker.evaluate` returns a non-Serializable value, then `worker.evaluate` returns `undefined`. DevTools Protocol also supports transferring some additional values that are not serializable by `JSON`: `-0`, `NaN`, `Infinity`, `-Infinity`, and bigint literals.
   * @param pageFunction Function to be evaluated in the worker context
   * @param arg Optional argument to pass to `pageFunction`
   */
  evaluate<R, Arg>(pageFunction: PageFunction<Arg, R>, arg: Arg): Promise<R>;
  evaluate<R>(pageFunction: PageFunction<void, R>, arg?: any): Promise<R>;

  /**
   * Returns the return value of `pageFunction` as in-page object (JSHandle).
   * The only difference between `worker.evaluate` and `worker.evaluateHandle` is that `worker.evaluateHandle` returns in-page object (JSHandle).
   * If the function passed to the `worker.evaluateHandle` returns a Promise, then `worker.evaluateHandle` would wait for the promise to resolve and return its value.
   * @param pageFunction Function to be evaluated in the page context
   * @param arg Optional argument to pass to `pageFunction`
   */
  evaluateHandle<R, Arg>(pageFunction: PageFunction<Arg, R>, arg: Arg): Promise<SmartHandle<R>>;
  evaluateHandle<R>(pageFunction: PageFunction<void, R>, arg?: any): Promise<SmartHandle<R>>;
  /**
   * Emitted when this dedicated WebWorker is terminated.
   */
  on(event: 'close', listener: (worker: Worker) => void): this;

  /**
   * Emitted when this dedicated WebWorker is terminated.
   */
  once(event: 'close', listener: (worker: Worker) => void): this;

  /**
   * Emitted when this dedicated WebWorker is terminated.
   */
  addListener(event: 'close', listener: (worker: Worker) => void): this;

  /**
   * Emitted when this dedicated WebWorker is terminated.
   */
  removeListener(event: 'close', listener: (worker: Worker) => void): this;

  /**
   * Emitted when this dedicated WebWorker is terminated.
   */
  off(event: 'close', listener: (worker: Worker) => void): this;

  url(): string;}

/**
 * JSHandle represents an in-page JavaScript object. JSHandles can be created with the `page.evaluateHandle(pageFunction[, arg])` method.
 * ```js
 * const windowHandle = await page.evaluateHandle(() => window);
 * // ...
 * ```
 * JSHandle prevents the referenced JavaScript object being garbage collected unless the handle is exposed with `jsHandle.dispose()`. JSHandles are auto-disposed when their origin frame gets navigated or the parent context gets destroyed.
 * JSHandle instances can be used as an argument in `page.$eval(selector, pageFunction[, arg])`, `page.evaluate(pageFunction[, arg])` and `page.evaluateHandle(pageFunction[, arg])` methods.
 */
export interface JSHandle<T = any> {
  /**
   * Returns the return value of `pageFunction`
   * This method passes this handle as the first argument to `pageFunction`.
   * If `pageFunction` returns a Promise, then `handle.evaluate` would wait for the promise to resolve and return its value.
   * Examples:
   * ```js
   * const tweetHandle = await page.$('.tweet .retweets');
   * expect(await tweetHandle.evaluate((node, suffix) => node.innerText, ' retweets')).toBe('10 retweets');
   * ```
   * @param pageFunction Function to be evaluated in browser context
   * @param arg Optional argument to pass to `pageFunction`
   */
  evaluate<R, Arg, O extends T = T>(pageFunction: PageFunctionOn<O, Arg, R>, arg: Arg): Promise<R>;
  evaluate<R, O extends T = T>(pageFunction: PageFunctionOn<O, void, R>, arg?: any): Promise<R>;

  /**
   * Returns the return value of `pageFunction` as in-page object (JSHandle).
   * This method passes this handle as the first argument to `pageFunction`.
   * The only difference between `jsHandle.evaluate` and `jsHandle.evaluateHandle` is that `jsHandle.evaluateHandle` returns in-page object (JSHandle).
   * If the function passed to the `jsHandle.evaluateHandle` returns a Promise, then `jsHandle.evaluateHandle` would wait for the promise to resolve and return its value.
   * See `page.evaluateHandle(pageFunction[, arg])` for more details.
   * @param pageFunction Function to be evaluated
   * @param arg Optional argument to pass to `pageFunction`
   */
  evaluateHandle<R, Arg, O extends T = T>(pageFunction: PageFunctionOn<O, Arg, R>, arg: Arg): Promise<SmartHandle<R>>;
  evaluateHandle<R, O extends T = T>(pageFunction: PageFunctionOn<O, void, R>, arg?: any): Promise<SmartHandle<R>>;

  /**
   * Returns a JSON representation of the object. If the object has a `toJSON` function, it **will not be called**.
   * 
   * > **NOTE** The method will return an empty JSON object if the referenced object is not stringifiable. It will throw an error if the object has circular references.
   */
  jsonValue(): Promise<T>;
  /**
   * Returns either `null` or the object handle itself, if the object handle is an instance of ElementHandle.
   */
  asElement(): T extends Node ? ElementHandle<T> : null;
  /**
   * The `jsHandle.dispose` method stops referencing the element handle.
   */
  dispose(): Promise<void>;

  /**
   * The method returns a map with **own property names** as keys and JSHandle instances for the property values.
   * ```js
   * const handle = await page.evaluateHandle(() => ({window, document}));
   * const properties = await handle.getProperties();
   * const windowHandle = properties.get('window');
   * const documentHandle = properties.get('document');
   * await handle.dispose();
   * ```
   */
  getProperties(): Promise<Map<string, JSHandle>>;

  /**
   * Fetches a single property from the referenced object.
   * @param propertyName property to get
   */
  getProperty(propertyName: string): Promise<JSHandle>;}

/**
 * ElementHandle represents an in-page DOM element. ElementHandles can be created with the `page.$(selector)` method.
 * ```js
 * const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.
 * 
 * (async () => {
 *   const browser = await chromium.launch();
 *   const page = await browser.newPage();
 *   await page.goto('https://example.com');
 *   const hrefElement = await page.$('a');
 *   await hrefElement.click();
 *   // ...
 * })();
 * ```
 * ElementHandle prevents DOM element from garbage collection unless the handle is disposed with `jsHandle.dispose()`. ElementHandles are auto-disposed when their origin frame gets navigated.
 * ElementHandle instances can be used as an argument in `page.$eval(selector, pageFunction[, arg])` and `page.evaluate(pageFunction[, arg])` methods.
 */
export interface ElementHandle<T=Node> extends JSHandle<T> {
  /**
   * The method finds an element matching the specified selector in the `ElementHandle`'s subtree. See Working with selectors for more details. If no elements match the selector, returns `null`.
   * @param selector A selector to query for. See working with selectors for more details.
   */
  $<K extends keyof HTMLElementTagNameMap>(selector: K): Promise<ElementHandleForTag<K> | null>;
  $(selector: string): Promise<ElementHandle<SVGElement | HTMLElement> | null>;

  /**
   * The method finds all elements matching the specified selector in the `ElementHandle`s subtree. See Working with selectors for more details. If no elements match the selector, returns empty array.
   * @param selector A selector to query for. See working with selectors for more details.
   */
  $$<K extends keyof HTMLElementTagNameMap>(selector: K): Promise<ElementHandleForTag<K>[]>;
  $$(selector: string): Promise<ElementHandle<SVGElement | HTMLElement>[]>;

  /**
   * Returns the return value of `pageFunction`
   * The method finds an element matching the specified selector in the `ElementHandle`s subtree and passes it as a first argument to `pageFunction`. See Working with selectors for more details. If no elements match the selector, the method throws an error.
   * If `pageFunction` returns a Promise, then `frame.$eval` would wait for the promise to resolve and return its value.
   * Examples:
   * ```js
   * const tweetHandle = await page.$('.tweet');
   * expect(await tweetHandle.$eval('.like', node => node.innerText)).toBe('100');
   * expect(await tweetHandle.$eval('.retweets', node => node.innerText)).toBe('10');
   * ```
   * @param selector A selector to query for. See working with selectors for more details.
   * @param pageFunction Function to be evaluated in browser context
   * @param arg Optional argument to pass to `pageFunction`
   */
  $eval<K extends keyof HTMLElementTagNameMap, R, Arg>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K], Arg, R>, arg: Arg): Promise<R>;
  $eval<R, Arg, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E, Arg, R>, arg: Arg): Promise<R>;
  $eval<K extends keyof HTMLElementTagNameMap, R>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K], void, R>, arg?: any): Promise<R>;
  $eval<R, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E, void, R>, arg?: any): Promise<R>;

  /**
   * Returns the return value of `pageFunction`
   * The method finds all elements matching the specified selector in the `ElementHandle`'s subtree and passes an array of matched elements as a first argument to `pageFunction`. See Working with selectors for more details.
   * If `pageFunction` returns a Promise, then `frame.$$eval` would wait for the promise to resolve and return its value.
   * Examples:
   * ```html
   * <div class="feed">
   *   <div class="tweet">Hello!</div>
   *   <div class="tweet">Hi!</div>
   * </div>
   * ```
   * ```js
   * const feedHandle = await page.$('.feed');
   * expect(await feedHandle.$$eval('.tweet', nodes => nodes.map(n => n.innerText))).toEqual(['Hello!', 'Hi!']);
   * ```
   * @param selector A selector to query for. See working with selectors for more details.
   * @param pageFunction Function to be evaluated in browser context
   * @param arg Optional argument to pass to `pageFunction`
   */
  $$eval<K extends keyof HTMLElementTagNameMap, R, Arg>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K][], Arg, R>, arg: Arg): Promise<R>;
  $$eval<R, Arg, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E[], Arg, R>, arg: Arg): Promise<R>;
  $$eval<K extends keyof HTMLElementTagNameMap, R>(selector: K, pageFunction: PageFunctionOn<HTMLElementTagNameMap[K][], void, R>, arg?: any): Promise<R>;
  $$eval<R, E extends SVGElement | HTMLElement = SVGElement | HTMLElement>(selector: string, pageFunction: PageFunctionOn<E[], void, R>, arg?: any): Promise<R>;

  /**
   * Returns element specified by selector satisfies `state` option. Returns `null` if waiting for `hidden` or `detached`.
   * Wait for the `selector` relative to the element handle to satisfy `state` option (either appear/disappear from dom, or become visible/hidden). If at the moment of calling the method `selector` already satisfies the condition, the method will return immediately. If the selector doesn't satisfy the condition for the `timeout` milliseconds, the function will throw.
   * ```js
   * await page.setContent(`<div><span></span></div>`);
   * const div = await page.$('div');
   * // Waiting for the 'span' selector relative to the div.
   * const span = await div.waitForSelector('span', { state: 'attached' });
   * ```
   * 
   * > **NOTE** This method does not work across navigations, use `page.waitForSelector(selector[, options])` instead.
   * @param selector A selector to query for. See working with selectors for more details.
   * @param options 
   */
  waitForSelector<K extends keyof HTMLElementTagNameMap>(selector: K, options?: ElementHandleWaitForSelectorOptionsNotHidden): Promise<ElementHandleForTag<K>>;
  waitForSelector(selector: string, options?: ElementHandleWaitForSelectorOptionsNotHidden): Promise<ElementHandle<SVGElement | HTMLElement>>;
  waitForSelector<K extends keyof HTMLElementTagNameMap>(selector: K, options: ElementHandleWaitForSelectorOptions): Promise<ElementHandleForTag<K> | null>;
  waitForSelector(selector: string, options: ElementHandleWaitForSelectorOptions): Promise<null|ElementHandle<SVGElement | HTMLElement>>;
  /**
   * This method returns the bounding box of the element, or `null` if the element is not visible. The bounding box is calculated relative to the main frame viewport - which is usually the same as the browser window.
   * Scrolling affects the returned bonding box, similarly to Element.getBoundingClientRect. That means `x` and/or `y` may be negative.
   * Elements from child frames return the bounding box relative to the main frame, unlike the Element.getBoundingClientRect.
   * Assuming the page is static, it is safe to use bounding box coordinates to perform input. For example, the following snippet should click the center of the element.
   * ```js
   * const box = await elementHandle.boundingBox();
   * await page.mouse.click(box.x + box.width / 2, box.y + box.height / 2);
   * ```
   */
  boundingBox(): Promise<null|{
    /**
     * the x coordinate of the element in pixels.
     */
    x: number;

    /**
     * the y coordinate of the element in pixels.
     */
    y: number;

    /**
     * the width of the element in pixels.
     */
    width: number;

    /**
     * the height of the element in pixels.
     */
    height: number;
  }>;

  /**
   * This method checks the element by performing the following steps:
   * - Ensure that element is a checkbox or a radio input. If not, this method rejects. If the element is already checked, this method returns immediately.
   * - Wait for actionability checks on the element, unless `force` option is set.
   * - Scroll the element into view if needed.
   * - Use page.mouse to click in the center of the element.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * - Ensure that the element is now checked. If not, this method rejects.
   * If the element is detached from the DOM at any moment during the action, this method rejects.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * @param options 
   */
  check(options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * This method clicks the element by performing the following steps:
   * - Wait for actionability checks on the element, unless `force` option is set.
   * - Scroll the element into view if needed.
   * - Use page.mouse to click in the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * If the element is detached from the DOM at any moment during the action, this method rejects.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * @param options 
   */
  click(options?: {
    /**
     * Defaults to `left`.
     */
    button?: "left"|"middle"|"right";

    /**
     * defaults to 1. See UIEvent.detail.
     */
    clickCount?: number;

    /**
     * Time to wait between `mousedown` and `mouseup` in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns the content frame for element handles referencing iframe nodes, or `null` otherwise
   */
  contentFrame(): Promise<null|Frame>;

  /**
   * This method double clicks the element by performing the following steps:
   * - Wait for actionability checks on the element, unless `force` option is set.
   * - Scroll the element into view if needed.
   * - Use page.mouse to double click in the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set. Note that if the first click of the `dblclick()` triggers a navigation event, this method will reject.
   * If the element is detached from the DOM at any moment during the action, this method rejects.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * 
   * > **NOTE** `elementHandle.dblclick()` dispatches two `click` events and a single `dblclick` event.
   * @param options 
   */
  dblclick(options?: {
    /**
     * Defaults to `left`.
     */
    button?: "left"|"middle"|"right";

    /**
     * Time to wait between `mousedown` and `mouseup` in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * The snippet below dispatches the `click` event on the element. Regardless of the visibility state of the elment, `click` is dispatched. This is equivalend to calling element.click().
   * ```js
   * await elementHandle.dispatchEvent('click');
   * ```
   * Under the hood, it creates an instance of an event based on the given `type`, initializes it with `eventInit` properties and dispatches it on the element. Events are `composed`, `cancelable` and bubble by default.
   * Since `eventInit` is event-specific, please refer to the events documentation for the lists of initial properties:
   * - DragEvent
   * - FocusEvent
   * - KeyboardEvent
   * - MouseEvent
   * - PointerEvent
   * - TouchEvent
   * - Event
   * You can also specify `JSHandle` as the property value if you want live objects to be passed into the event:
   * ```js
   * // Note you can only create DataTransfer in Chromium and Firefox
   * const dataTransfer = await page.evaluateHandle(() => new DataTransfer());
   * await elementHandle.dispatchEvent('dragstart', { dataTransfer });
   * ```
   * @param type DOM event type: `"click"`, `"dragstart"`, etc.
   * @param eventInit Optional event-specific initialization properties.
   */
  dispatchEvent(type: string, eventInit?: EvaluationArgument): Promise<void>;

  /**
   * This method waits for actionability checks, focuses the element, fills it and triggers an `input` event after filling. If the element is not an `<input>`, `<textarea>` or `[contenteditable]` element, this method throws an error. Note that you can pass an empty string to clear the input field.
   * @param value Value to set for the `<input>`, `<textarea>` or `[contenteditable]` element.
   * @param options 
   */
  fill(value: string, options?: {
    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Calls focus on the element.
   */
  focus(): Promise<void>;

  /**
   * Returns element attribute value.
   * @param name Attribute name to get the value for.
   */
  getAttribute(name: string): Promise<null|string>;

  /**
   * This method hovers over the element by performing the following steps:
   * - Wait for actionability checks on the element, unless `force` option is set.
   * - Scroll the element into view if needed.
   * - Use page.mouse to hover over the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * If the element is detached from the DOM at any moment during the action, this method rejects.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * @param options 
   */
  hover(options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns the `element.innerHTML`.
   */
  innerHTML(): Promise<string>;

  /**
   * Returns the `element.innerText`.
   */
  innerText(): Promise<string>;

  /**
   * Returns the frame containing the given element.
   */
  ownerFrame(): Promise<null|Frame>;

  /**
   * Focuses the element, and then uses `keyboard.down(key)` and `keyboard.up(key)`.
   * `key` can specify the intended keyboardEvent.key value or a single character to generate the text for. A superset of the `key` values can be found here. Examples of the keys are:
   * `F1` - `F12`, `Digit0`- `Digit9`, `KeyA`- `KeyZ`, `Backquote`, `Minus`, `Equal`, `Backslash`, `Backspace`, `Tab`, `Delete`, `Escape`, `ArrowDown`, `End`, `Enter`, `Home`, `Insert`, `PageDown`, `PageUp`, `ArrowRight`, `ArrowUp`, etc.
   * Following modification shortcuts are also supported: `Shift`, `Control`, `Alt`, `Meta`, `ShiftLeft`.
   * Holding down `Shift` will type the text that corresponds to the `key` in the upper case.
   * If `key` is a single character, it is case-sensitive, so the values `a` and `A` will generate different respective texts.
   * Shortcuts such as `key: "Control+o"` or `key: "Control+Shift+T"` are supported as well. When speficied with the modifier, modifier is pressed and being held while the subsequent key is being pressed.
   * @param key Name of the key to press or a character to generate, such as `ArrowLeft` or `a`.
   * @param options 
   */
  press(key: string, options?: {
    /**
     * Time to wait between `keydown` and `keyup` in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns the buffer with the captured screenshot.
   * This method waits for the actionability checks, then scrolls element into view before taking a screenshot. If the element is detached from DOM, the method throws an error.
   * @param options 
   */
  screenshot(options?: {
    /**
     * Hides default white background and allows capturing screenshots with transparency. Not applicable to `jpeg` images. Defaults to `false`.
     */
    omitBackground?: boolean;

    /**
     * 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 the current working directory. If no path is provided, the image won't be saved to the disk.
     */
    path?: string;

    /**
     * The quality of the image, between 0-100. Not applicable to `png` images.
     */
    quality?: number;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;

    /**
     * Specify screenshot type, defaults to `png`.
     */
    type?: "jpeg"|"png";
  }): Promise<Buffer>;

  /**
   * This method waits for actionability checks, then tries to scroll element into view, unless it is completely visible as defined by IntersectionObserver's ```ratio```.
   * Throws when `elementHandle` does not point to an element connected to a Document or a ShadowRoot.
   * @param options 
   */
  scrollIntoViewIfNeeded(options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns the array of option values that have been successfully selected.
   * Triggers a `change` and `input` event once all the provided options have been selected. If element is not a `<select>` element, the method throws an error.
   * ```js
   * // single selection matching the value
   * handle.selectOption('blue');
   * 
   * // single selection matching both the value and the label
   * handle.selectOption({ label: 'Blue' });
   * 
   * // multiple selection
   * handle.selectOption('red', 'green', 'blue');
   * 
   * // multiple selection for blue, red and second option
   * handle.selectOption({ value: 'blue' }, { index: 2 }, 'red');
   * ```
   * @param values Options to select. If the `<select>` has the `multiple` attribute, all matching options are selected, otherwise only the first option matching one of the passed options is selected. String values are equivalent to `{value:'string'}`. Option is considered matching if all specified properties match.
   * @param options 
   */
  selectOption(values: null|string|ElementHandle|Array<string>|{
    /**
     * Matches by `option.value`.
     */
    value?: string;

    /**
     * Matches by `option.label`.
     */
    label?: string;

    /**
     * Matches by the index.
     */
    index?: number;
  }|Array<ElementHandle>|Array<{
    /**
     * Matches by `option.value`.
     */
    value?: string;

    /**
     * Matches by `option.label`.
     */
    label?: string;

    /**
     * Matches by the index.
     */
    index?: number;
  }>, options?: {
    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<Array<string>>;

  /**
   * This method waits for actionability checks, then focuses the element and selects all its text content.
   * @param options 
   */
  selectText(options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * This method expects `elementHandle` to point to an input element.
   * Sets the value of the file input to these file paths or files. If some of the `filePaths` are relative paths, then they are resolved relative to the the current working directory. For empty array, clears the selected files.
   * @param files 
   * @param options 
   */
  setInputFiles(files: string|Array<string>|{
    /**
     * File name **required**
     */
    name: string;

    /**
     * File type **required**
     */
    mimeType: string;

    /**
     * File content **required**
     */
    buffer: Buffer;
  }|Array<{
    /**
     * File name **required**
     */
    name: string;

    /**
     * File type **required**
     */
    mimeType: string;

    /**
     * File content **required**
     */
    buffer: Buffer;
  }>, options?: {
    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * This method taps the element by performing the following steps:
   * - Wait for actionability checks on the element, unless `force` option is set.
   * - Scroll the element into view if needed.
   * - Use page.touchscreen to tap in the center of the element, or the specified `position`.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * If the element is detached from the DOM at any moment during the action, this method rejects.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * 
   * > **NOTE** `elementHandle.tap()` requires that the `hasTouch` option of the browser context be set to true.
   * @param options 
   */
  tap(options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Modifier keys to press. Ensures that only these modifiers are pressed during the operation, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
     */
    modifiers?: Array<"Alt"|"Control"|"Meta"|"Shift">;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * A point to use relative to the top-left corner of element padding box. If not specified, uses some visible point of the element.
     */
    position?: {
      x: number;

      y: number;
    };

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns the `node.textContent`.
   */
  textContent(): Promise<null|string>;

  toString(): string;

  /**
   * Focuses the element, and then sends a `keydown`, `keypress`/`input`, and `keyup` event for each character in the text.
   * To press a special key, like `Control` or `ArrowDown`, use `elementHandle.press(key[, options])`.
   * ```js
   * await elementHandle.type('Hello'); // Types instantly
   * await elementHandle.type('World', {delay: 100}); // Types slower, like a user
   * ```
   * An example of typing into a text field and then submitting the form:
   * ```js
   * const elementHandle = await page.$('input');
   * await elementHandle.type('some text');
   * await elementHandle.press('Enter');
   * ```
   * @param text A text to type into a focused element.
   * @param options 
   */
  type(text: string, options?: {
    /**
     * Time to wait between key presses in milliseconds. Defaults to 0.
     */
    delay?: number;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * This method checks the element by performing the following steps:
   * - Ensure that element is a checkbox or a radio input. If not, this method rejects. If the element is already unchecked, this method returns immediately.
   * - Wait for actionability checks on the element, unless `force` option is set.
   * - Scroll the element into view if needed.
   * - Use page.mouse to click in the center of the element.
   * - Wait for initiated navigations to either succeed or fail, unless `noWaitAfter` option is set.
   * - Ensure that the element is now unchecked. If not, this method rejects.
   * If the element is detached from the DOM at any moment during the action, this method rejects.
   * When all steps combined have not finished during the specified `timeout`, this method rejects with a TimeoutError. Passing zero timeout disables this.
   * @param options 
   */
  uncheck(options?: {
    /**
     * Whether to bypass the actionability checks. Defaults to `false`.
     */
    force?: boolean;

    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;

  /**
   * Returns the element satisfies the `state`.
   * Depending on the `state` parameter, this method waits for one of the actionability checks to pass. This method throws when the element is detached while waiting, unless waiting for the `"hidden"` state.
   * - `"visible"` Wait until the element is visible.
   * - `"hidden"` Wait until the element is not visible or not attached. Note that waiting for hidden does not throw when the element detaches.
   * - `"stable"` Wait until the element is both visible and stable.
   * - `"enabled"` Wait until the element is enabled.
   * - `"disabled"` Wait until the element is not enabled.
   * If the element does not satisfy the condition for the `timeout` milliseconds, this method will throw.
   * @param state A state to wait for, see below for more details.
   * @param options 
   */
  waitForElementState(state: "disabled"|"enabled"|"hidden"|"stable"|"visible", options?: {
    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;}

/**
 * BrowserType provides methods to launch a specific browser instance or connect to an existing one. The following is a typical example of using Playwright to drive automation:
 * ```js
 * const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.
 * 
 * (async () => {
 *   const browser = await chromium.launch();
 *   const page = await browser.newPage();
 *   await page.goto('https://example.com');
 *   // other actions...
 *   await browser.close();
 * })();
 * ```
 */
export interface BrowserType<Browser> {

  /**
   * This methods attaches Playwright to an existing browser instance.
   * @param params 
   */
  connect(params: ConnectOptions): Promise<Browser>;

  /**
   * A path where Playwright expects to find a bundled browser executable.
   */
  executablePath(): string;

  /**
   * Returns the browser instance.
   * You can use `ignoreDefaultArgs` to filter out `--mute-audio` from default arguments:
   * ```js
   * const browser = await chromium.launch({  // Or 'firefox' or 'webkit'.
   *   ignoreDefaultArgs: ['--mute-audio']
   * });
   * ```
   * 
   * > **Chromium-only** Playwright can also be used to control the Chrome browser, but it works best with the version of Chromium it is bundled with. There is no guarantee it will work with any other version. Use `executablePath` option with extreme caution.
   * >
   * 
   * > If Google Chrome (rather than Chromium) is preferred, a Chrome Canary or Dev Channel build is suggested.
   * >
   * 
   * > In `browserType.launch([options])` above, any mention of Chromium also applies to Chrome.
   * >
   * 
   * > See `this article` for a description of the differences between Chromium and Chrome. `This article` describes some differences for Linux users.
   * @param options 
   */
  launch(options?: LaunchOptions): Promise<Browser>;

  /**
   * Returns the persistent browser context instance.
   * Launches browser that uses persistent storage located at `userDataDir` and returns the only context. Closing this context will automatically close the browser.
   * @param userDataDir Path to a User Data Directory, which stores browser session data like cookies and local storage. More details for Chromium and Firefox.
   * @param options 
   */
  launchPersistentContext(userDataDir: string, options?: {
    /**
     * Whether to automatically download all the attachments. Defaults to `false` where all the downloads are canceled.
     */
    acceptDownloads?: boolean;

    /**
     * Additional arguments to pass to the browser instance. The list of Chromium flags can be found here.
     */
    args?: Array<string>;

    /**
     * Toggles bypassing page's Content-Security-Policy.
     */
    bypassCSP?: boolean;

    /**
     * Enable Chromium sandboxing. Defaults to `true`.
     */
    chromiumSandbox?: boolean;

    /**
     * Emulates `'prefers-colors-scheme'` media feature, supported values are `'light'`, `'dark'`, `'no-preference'`. See `page.emulateMedia(params)` for more details. Defaults to '`light`'.
     */
    colorScheme?: "dark"|"light"|"no-preference";

    /**
     * Specify device scale factor (can be thought of as dpr). Defaults to `1`.
     */
    deviceScaleFactor?: number;

    /**
     * **Chromium-only** Whether to auto-open a Developer Tools panel for each tab. If this option is `true`, the `headless` option will be set `false`.
     */
    devtools?: boolean;

    /**
     * If specified, accepted downloads are downloaded into this directory. Otherwise, temporary directory is created and is deleted when browser is closed.
     */
    downloadsPath?: string;

    /**
     * Specify environment variables that will be visible to the browser. Defaults to `process.env`.
     */
    env?: { [key: string]: string|number|boolean; };

    /**
     * Path to a browser executable to run instead of the bundled one. If `executablePath` is a relative path, then it is resolved relative to the current working directory. **BEWARE**: Playwright is only guaranteed to work with the bundled Chromium, Firefox or WebKit, use at your own risk.
     */
    executablePath?: string;

    /**
     * An object containing additional HTTP headers to be sent with every request. All header values must be strings.
     */
    extraHTTPHeaders?: { [key: string]: string; };

    geolocation?: {
      /**
       * Latitude between -90 and 90.
       */
      latitude: number;

      /**
       * Longitude between -180 and 180.
       */
      longitude: number;

      /**
       * Non-negative accuracy value. Defaults to `0`.
       */
      accuracy?: number;
    };

    /**
     * Close the browser process on SIGHUP. Defaults to `true`.
     */
    handleSIGHUP?: boolean;

    /**
     * Close the browser process on Ctrl-C. Defaults to `true`.
     */
    handleSIGINT?: boolean;

    /**
     * Close the browser process on SIGTERM. Defaults to `true`.
     */
    handleSIGTERM?: boolean;

    /**
     * Specifies if viewport supports touch events. Defaults to false.
     */
    hasTouch?: boolean;

    /**
     * Whether to run browser in headless mode. More details for Chromium and Firefox. Defaults to `true` unless the `devtools` option is `true`.
     */
    headless?: boolean;

    /**
     * Credentials for HTTP authentication.
     */
    httpCredentials?: {
      username: string;

      password: string;
    };

    /**
     * If `true`, then do not use any of the default arguments. If an array is given, then filter out the given default arguments. Dangerous option; use with care. Defaults to `false`.
     */
    ignoreDefaultArgs?: boolean|Array<string>;

    /**
     * Whether to ignore HTTPS errors during navigation. Defaults to `false`.
     */
    ignoreHTTPSErrors?: boolean;

    /**
     * Whether the `meta viewport` tag is taken into account and touch events are enabled. Defaults to `false`. Not supported in Firefox.
     */
    isMobile?: boolean;

    /**
     * Whether or not to enable JavaScript in the context. Defaults to `true`.
     */
    javaScriptEnabled?: boolean;

    /**
     * Specify user locale, for example `en-GB`, `de-DE`, etc. Locale will affect `navigator.language` value, `Accept-Language` request header value as well as number and date formatting rules.
     */
    locale?: string;

    /**
     * Logger sink for Playwright logging.
     */
    logger?: Logger;

    /**
     * Whether to emulate network being offline. Defaults to `false`.
     */
    offline?: boolean;

    /**
     * A list of permissions to grant to all pages in this context. See `browserContext.grantPermissions(permissions[, options])` for more details.
     */
    permissions?: Array<string>;

    /**
     * Network proxy settings.
     */
    proxy?: {
      /**
       * Proxy to be used for all requests. HTTP and SOCKS proxies are supported, for example `http://myproxy.com:3128` or `socks5://myproxy.com:3128`. Short form `myproxy.com:3128` is considered an HTTP proxy.
       */
      server: string;

      /**
       * Optional coma-separated domains to bypass proxy, for example `".com, chromium.org, .domain.com"`.
       */
      bypass?: string;

      /**
       * Optional username to use if HTTP proxy requires authentication.
       */
      username?: string;

      /**
       * Optional password to use if HTTP proxy requires authentication.
       */
      password?: string;
    };

    /**
     * Enables HAR recording for all pages into `recordHar.path` file. If not specified, the HAR is not recorded. Make sure to await `browserContext.close()` for the HAR to be saved.
     */
    recordHar?: {
      /**
       * Optional setting to control whether to omit request content from the HAR. Defaults to `false`.
       */
      omitContent?: boolean;

      /**
       * Path on the filesystem to write the HAR file to.
       */
      path: string;
    };

    /**
     * Enables video recording for all pages into `recordVideo.dir` directory. If not specified videos are not recorded. Make sure to await `browserContext.close()` for videos to be saved.
     */
    recordVideo?: {
      /**
       * Path to the directory to put videos into.
       */
      dir: string;

      /**
       * Optional dimensions of the recorded videos. If not specified the size will be equal to `viewport`. If `viewport` is not configured explicitly the video size defaults to 1280x720. Actual picture of each page will be scaled down if necessary to fit the specified size.
       */
      size?: {
        /**
         * Video frame width.
         */
        width: number;

        /**
         * Video frame height.
         */
        height: number;
      };
    };

    /**
     * Slows down Playwright operations by the specified amount of milliseconds. Useful so that you can see what is going on. Defaults to 0.
     */
    slowMo?: number;

    /**
     * Maximum time in milliseconds to wait for the browser instance to start. Defaults to `30000` (30 seconds). Pass `0` to disable timeout.
     */
    timeout?: number;

    /**
     * Changes the timezone of the context. See ICU’s `metaZones.txt` for a list of supported timezone IDs.
     */
    timezoneId?: string;

    /**
     * Specific user agent to use in this context.
     */
    userAgent?: string;

    /**
     * **NOTE** Use `recordVideo` instead, it takes precedence over `videoSize`. Specifies dimensions of the automatically recorded video. Can only be used if `videosPath` is set. If not specified the size will be equal to `viewport`. If `viewport` is not configured explicitly the video size defaults to 1280x720. Actual picture of the page will be scaled down if necessary to fit specified size.
     */
    videoSize?: {
      /**
       * Video frame width.
       */
      width: number;

      /**
       * Video frame height.
       */
      height: number;
    };

    /**
     * **NOTE** Use `recordVideo` instead, it takes precedence over `videosPath`. Enables video recording for all pages to `videosPath` directory. If not specified, videos are not recorded. Make sure to await `browserContext.close()` for videos to be saved.
     */
    videosPath?: string;

    /**
     * Sets a consistent viewport for each page. Defaults to an 1280x720 viewport. `null` disables the default viewport.
     */
    viewport?: null|{
      /**
       * page width in pixels.
       */
      width: number;

      /**
       * page height in pixels.
       */
      height: number;
    };
  }): Promise<BrowserContext>;

  /**
   * Returns the browser app instance.
   * Launches browser server that client can connect to. An example of launching a browser executable and connecting to it later:
   * ```js
   * const { chromium } = require('playwright');  // Or 'webkit' or 'firefox'.
   * 
   * (async () => {
   *   const browserServer = await chromium.launchServer();
   *   const wsEndpoint = browserServer.wsEndpoint();
   *   // Use web socket endpoint later to establish a connection.
   *   const browser = await chromium.connect({ wsEndpoint });
   *   // Close browser instance.
   *   await browserServer.close();
   * })();
   * ```
   * @param options 
   */
  launchServer(options?: {
    /**
     * Additional arguments to pass to the browser instance. The list of Chromium flags can be found here.
     */
    args?: Array<string>;

    /**
     * Enable Chromium sandboxing. Defaults to `true`.
     */
    chromiumSandbox?: boolean;

    /**
     * **Chromium-only** Whether to auto-open a Developer Tools panel for each tab. If this option is `true`, the `headless` option will be set `false`.
     */
    devtools?: boolean;

    /**
     * If specified, accepted downloads are downloaded into this directory. Otherwise, temporary directory is created and is deleted when browser is closed.
     */
    downloadsPath?: string;

    /**
     * Specify environment variables that will be visible to the browser. Defaults to `process.env`.
     */
    env?: { [key: string]: string|number|boolean; };

    /**
     * Path to a browser executable to run instead of the bundled one. If `executablePath` is a relative path, then it is resolved relative to the current working directory. **BEWARE**: Playwright is only guaranteed to work with the bundled Chromium, Firefox or WebKit, use at your own risk.
     */
    executablePath?: string;

    /**
     * Firefox user preferences. Learn more about the Firefox user preferences at `about:config`.
     */
    firefoxUserPrefs?: { [key: string]: string|number|boolean; };

    /**
     * Close the browser process on SIGHUP. Defaults to `true`.
     */
    handleSIGHUP?: boolean;

    /**
     * Close the browser process on Ctrl-C. Defaults to `true`.
     */
    handleSIGINT?: boolean;

    /**
     * Close the browser process on SIGTERM. Defaults to `true`.
     */
    handleSIGTERM?: boolean;

    /**
     * Whether to run browser in headless mode. More details for Chromium and Firefox. Defaults to `true` unless the `devtools` option is `true`.
     */
    headless?: boolean;

    /**
     * If `true`, then do not use any of the default arguments. If an array is given, then filter out the given default arguments. Dangerous option; use with care. Defaults to `false`.
     */
    ignoreDefaultArgs?: boolean|Array<string>;

    /**
     * Logger sink for Playwright logging.
     */
    logger?: Logger;

    /**
     * Port to use for the web socket. Defaults to 0 that picks any available port.
     */
    port?: number;

    /**
     * Network proxy settings.
     */
    proxy?: {
      /**
       * Proxy to be used for all requests. HTTP and SOCKS proxies are supported, for example `http://myproxy.com:3128` or `socks5://myproxy.com:3128`. Short form `myproxy.com:3128` is considered an HTTP proxy.
       */
      server: string;

      /**
       * Optional coma-separated domains to bypass proxy, for example `".com, chromium.org, .domain.com"`.
       */
      bypass?: string;

      /**
       * Optional username to use if HTTP proxy requires authentication.
       */
      username?: string;

      /**
       * Optional password to use if HTTP proxy requires authentication.
       */
      password?: string;
    };

    /**
     * Maximum time in milliseconds to wait for the browser instance to start. Defaults to `30000` (30 seconds). Pass `0` to disable timeout.
     */
    timeout?: number;
  }): Promise<BrowserServer>;

  /**
   * Returns browser name. For example: `'chromium'`, `'webkit'` or `'firefox'`.
   */
  name(): string;}

/**
 * Chromium-specific features including Tracing, service worker support, etc. You can use `chromiumBrowser.startTracing([page, options])` and `chromiumBrowser.stopTracing()` to create a trace file which can be opened in Chrome DevTools or timeline viewer.
 * ```js
 * await browser.startTracing(page, {path: 'trace.json'});
 * await page.goto('https://www.google.com');
 * await browser.stopTracing();
 * ```
 */
export interface ChromiumBrowser extends Browser {
  /**
   * Returns an array of all open browser contexts. In a newly created browser, this will return zero browser contexts.
   * ```js
   * const browser = await pw.webkit.launch();
   * console.log(browser.contexts().length); // prints `0`
   * 
   * const context = await browser.newContext();
   * console.log(browser.contexts().length); // prints `1`
   * ```
   */
  contexts(): Array<ChromiumBrowserContext>;
  /**
   * Creates a new browser context. It won't share cookies/cache with other browser contexts.
   * ```js
   * (async () => {
   *   const browser = await playwright.firefox.launch();  // Or 'chromium' or 'webkit'.
   *   // Create a new incognito browser context.
   *   const context = await browser.newContext();
   *   // Create a new page in a pristine context.
   *   const page = await context.newPage();
   *   await page.goto('https://example.com');
   * })();
   * ```
   * @param options 
   */
  newContext(options?: BrowserContextOptions): Promise<ChromiumBrowserContext>;
  /**
   * Returns the newly created browser session.
   */
  newBrowserCDPSession(): Promise<CDPSession>;

  /**
   * Only one trace can be active at a time per browser.
   * @param page Optional, if specified, tracing includes screenshots of the given page.
   * @param options 
   */
  startTracing(page?: Page, options?: {
    /**
     * specify custom categories to use instead of default.
     */
    categories?: Array<string>;

    /**
     * A path to write the trace file to.
     */
    path?: string;

    /**
     * captures screenshots in the trace.
     */
    screenshots?: boolean;
  }): Promise<void>;

  /**
   * Returns the buffer with trace data.
   */
  stopTracing(): Promise<Buffer>;}

/**
 * The `CDPSession` instances are used to talk raw Chrome Devtools Protocol:
 * - protocol methods can be called with `session.send` method.
 * - protocol events can be subscribed to with `session.on` method.
 * Useful links:
 * - Documentation on DevTools Protocol can be found here: DevTools Protocol Viewer.
 * - Getting Started with DevTools Protocol: https://github.com/aslushnikov/getting-started-with-cdp/blob/master/README.md
 * ```js
 * const client = await page.context().newCDPSession(page);
 * 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
 * });
 * ```
 */
export interface CDPSession {
  on: <T extends keyof Protocol.Events | symbol>(event: T, listener: (payload: T extends symbol ? any : Protocol.Events[T extends keyof Protocol.Events ? T : never]) => void) => this;
  addListener: <T extends keyof Protocol.Events | symbol>(event: T, listener: (payload: T extends symbol ? any : Protocol.Events[T extends keyof Protocol.Events ? T : never]) => void) => this;
  off: <T extends keyof Protocol.Events | symbol>(event: T, listener: (payload: T extends symbol ? any : Protocol.Events[T extends keyof Protocol.Events ? T : never]) => void) => this;
  removeListener: <T extends keyof Protocol.Events | symbol>(event: T, listener: (payload: T extends symbol ? any : Protocol.Events[T extends keyof Protocol.Events ? T : never]) => void) => this;
  once: <T extends keyof Protocol.Events | symbol>(event: T, listener: (payload: T extends symbol ? any : Protocol.Events[T extends keyof Protocol.Events ? T : never]) => void) => this;
  /**
   * @param method protocol method name
   * @param params Optional method parameters
   */
  send<T extends keyof Protocol.CommandParameters>(
    method: T,
    params?: Protocol.CommandParameters[T]
  ): Promise<Protocol.CommandReturnValues[T]>;
  /**
   * Detaches the CDPSession from the target. Once detached, the CDPSession object won't emit any events and can't be used to send messages.
   */
  detach(): Promise<void>;}

type DeviceDescriptor = {
  viewport: ViewportSize;
  userAgent: string;
  deviceScaleFactor: number;
  isMobile: boolean;
  hasTouch: boolean;
  defaultBrowserType: 'chromium' | 'firefox' | 'webkit';
};

export namespace errors {

/**
 * TimeoutError is emitted whenever certain operations are terminated due to timeout, e.g. `page.waitForSelector(selector[, options])` or `browserType.launch([options])`.
 */
class TimeoutError extends Error {}

}

/**
 * The Accessibility class provides methods for inspecting Chromium's accessibility tree. The accessibility tree is used by assistive technology such as screen readers or switches.
 * Accessibility is a very platform-specific thing. On different platforms, there are different screen readers that might have wildly different output.
 * Blink - Chromium'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, Playwright tries to approximate this filtering, exposing only the "interesting" nodes of the tree.
 */
export interface Accessibility {
  /**
   * Captures the current state of the accessibility tree. The returned object represents the root accessible node of the page.
   * 
   * > **NOTE** The Chromium accessibility tree contains nodes that go unused on most platforms and by most screen readers. Playwright will discard them as well for an easier to process tree, unless `interestingOnly` is set to `false`.
   * An example of dumping the entire accessibility tree:
   * ```js
   * const snapshot = await page.accessibility.snapshot();
   * console.log(snapshot);
   * ```
   * An example of logging the focused node's name:
   * ```js
   * 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;
   * }
   * ```
   * @param options 
   */
  snapshot(options?: {
    /**
     * Prune uninteresting nodes from the tree. Defaults to `true`.
     */
    interestingOnly?: boolean;

    /**
     * The root DOM element for the snapshot. Defaults to the whole page.
     */
    root?: ElementHandle;
  }): Promise<null|AccessibilityNode>;
}

type AccessibilityNode = {
  role: string;
  name: string;
  value?: string|number;
  description?: string;
  keyshortcuts?: string;
  roledescription?: string;
  valuetext?: string;
  disabled?: boolean;
  expanded?: boolean;
  focused?: boolean;
  modal?: boolean;
  multiline?: boolean;
  multiselectable?: boolean;
  readonly?: boolean;
  required?: boolean;
  selected?: boolean;
  checked?: boolean|"mixed";
  pressed?: boolean|"mixed";
  level?: number;
  valuemin?: number;
  valuemax?: number;
  autocomplete?: string;
  haspopup?: string;
  invalid?: string;
  orientation?: string;
  children?: AccessibilityNode[];
}

export const selectors: Selectors;
export const devices: Devices & DeviceDescriptor[];

// This is required to not export everything by default. See https://github.com/Microsoft/TypeScript/issues/19545#issuecomment-340490459
export {};


/**
 * A Browser is created when Playwright connects to a browser instance, either through `browserType.launch([options])` or `browserType.connect(params)`.
 * An example of using a Browser to create a Page:
 * ```js
 * const { firefox } = require('playwright');  // Or 'chromium' or 'webkit'.
 * 
 * (async () => {
 *   const browser = await firefox.launch();
 *   const page = await browser.newPage();
 *   await page.goto('https://example.com');
 *   await browser.close();
 * })();
 * ```
 * See ChromiumBrowser, FirefoxBrowser and WebKitBrowser for browser-specific features. Note that `browserType.connect(params)` and `browserType.launch([options])` always return a specific browser instance, based on the browser being connected to or launched.
 */
export interface Browser extends EventEmitter {
  /**
   * Emitted when Browser gets disconnected from the browser application. This might happen because of one of the following:
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  on(event: 'disconnected', listener: () => void): this;

  /**
   * Emitted when Browser gets disconnected from the browser application. This might happen because of one of the following:
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  once(event: 'disconnected', listener: () => void): this;

  /**
   * Emitted when Browser gets disconnected from the browser application. This might happen because of one of the following:
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  addListener(event: 'disconnected', listener: () => void): this;

  /**
   * Emitted when Browser gets disconnected from the browser application. This might happen because of one of the following:
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  removeListener(event: 'disconnected', listener: () => void): this;

  /**
   * Emitted when Browser gets disconnected from the browser application. This might happen because of one of the following:
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  off(event: 'disconnected', listener: () => void): this;

  /**
   * In case this browser is obtained using `browserType.launch([options])`, closes the browser and all of its pages (if any were opened).
   * In case this browser is obtained using `browserType.connect(params)`, clears all created contexts belonging to this browser and disconnects from the browser server.
   * The Browser object itself is considered to be disposed and cannot be used anymore.
   */
  close(): Promise<void>;

  /**
   * Returns an array of all open browser contexts. In a newly created browser, this will return zero browser contexts.
   * ```js
   * const browser = await pw.webkit.launch();
   * console.log(browser.contexts().length); // prints `0`
   * 
   * const context = await browser.newContext();
   * console.log(browser.contexts().length); // prints `1`
   * ```
   */
  contexts(): Array<BrowserContext>;

  /**
   * Indicates that the browser is connected.
   */
  isConnected(): boolean;

  /**
   * Creates a new browser context. It won't share cookies/cache with other browser contexts.
   * ```js
   * (async () => {
   *   const browser = await playwright.firefox.launch();  // Or 'chromium' or 'webkit'.
   *   // Create a new incognito browser context.
   *   const context = await browser.newContext();
   *   // Create a new page in a pristine context.
   *   const page = await context.newPage();
   *   await page.goto('https://example.com');
   * })();
   * ```
   * @param options 
   */
  newContext(options?: BrowserContextOptions): Promise<BrowserContext>;

  /**
   * Creates a new page in a new browser context. Closing this page will close the context as well.
   * This is a convenience API that should only be used for the single-page scenarios and short snippets. Production code and testing frameworks should explicitly create `browser.newContext([options])` followed by the `browserContext.newPage()` to control their exact life times.
   * @param options 
   */
  newPage(options?: {
    /**
     * Whether to automatically download all the attachments. Defaults to `false` where all the downloads are canceled.
     */
    acceptDownloads?: boolean;

    /**
     * Toggles bypassing page's Content-Security-Policy.
     */
    bypassCSP?: boolean;

    /**
     * Emulates `'prefers-colors-scheme'` media feature, supported values are `'light'`, `'dark'`, `'no-preference'`. See `page.emulateMedia(params)` for more details. Defaults to '`light`'.
     */
    colorScheme?: "dark"|"light"|"no-preference";

    /**
     * Specify device scale factor (can be thought of as dpr). Defaults to `1`.
     */
    deviceScaleFactor?: number;

    /**
     * An object containing additional HTTP headers to be sent with every request. All header values must be strings.
     */
    extraHTTPHeaders?: { [key: string]: string; };

    geolocation?: {
      /**
       * Latitude between -90 and 90.
       */
      latitude: number;

      /**
       * Longitude between -180 and 180.
       */
      longitude: number;

      /**
       * Non-negative accuracy value. Defaults to `0`.
       */
      accuracy?: number;
    };

    /**
     * Specifies if viewport supports touch events. Defaults to false.
     */
    hasTouch?: boolean;

    /**
     * Credentials for HTTP authentication.
     */
    httpCredentials?: {
      username: string;

      password: string;
    };

    /**
     * Whether to ignore HTTPS errors during navigation. Defaults to `false`.
     */
    ignoreHTTPSErrors?: boolean;

    /**
     * Whether the `meta viewport` tag is taken into account and touch events are enabled. Defaults to `false`. Not supported in Firefox.
     */
    isMobile?: boolean;

    /**
     * Whether or not to enable JavaScript in the context. Defaults to `true`.
     */
    javaScriptEnabled?: boolean;

    /**
     * Specify user locale, for example `en-GB`, `de-DE`, etc. Locale will affect `navigator.language` value, `Accept-Language` request header value as well as number and date formatting rules.
     */
    locale?: string;

    /**
     * Logger sink for Playwright logging.
     */
    logger?: Logger;

    /**
     * Whether to emulate network being offline. Defaults to `false`.
     */
    offline?: boolean;

    /**
     * A list of permissions to grant to all pages in this context. See `browserContext.grantPermissions(permissions[, options])` for more details.
     */
    permissions?: Array<string>;

    /**
     * Network proxy settings to use with this context. Note that browser needs to be launched with the global proxy for this option to work. If all contexts override the proxy, global proxy will be never used and can be any string, for example `launch({ proxy: { server: 'per-context' } })`.
     */
    proxy?: {
      /**
       * Proxy to be used for all requests. HTTP and SOCKS proxies are supported, for example `http://myproxy.com:3128` or `socks5://myproxy.com:3128`. Short form `myproxy.com:3128` is considered an HTTP proxy.
       */
      server: string;

      /**
       * Optional coma-separated domains to bypass proxy, for example `".com, chromium.org, .domain.com"`.
       */
      bypass?: string;

      /**
       * Optional username to use if HTTP proxy requires authentication.
       */
      username?: string;

      /**
       * Optional password to use if HTTP proxy requires authentication.
       */
      password?: string;
    };

    /**
     * Enables HAR recording for all pages into `recordHar.path` file. If not specified, the HAR is not recorded. Make sure to await `browserContext.close()` for the HAR to be saved.
     */
    recordHar?: {
      /**
       * Optional setting to control whether to omit request content from the HAR. Defaults to `false`.
       */
      omitContent?: boolean;

      /**
       * Path on the filesystem to write the HAR file to.
       */
      path: string;
    };

    /**
     * Enables video recording for all pages into `recordVideo.dir` directory. If not specified videos are not recorded. Make sure to await `browserContext.close()` for videos to be saved.
     */
    recordVideo?: {
      /**
       * Path to the directory to put videos into.
       */
      dir: string;

      /**
       * Optional dimensions of the recorded videos. If not specified the size will be equal to `viewport`. If `viewport` is not configured explicitly the video size defaults to 1280x720. Actual picture of each page will be scaled down if necessary to fit the specified size.
       */
      size?: {
        /**
         * Video frame width.
         */
        width: number;

        /**
         * Video frame height.
         */
        height: number;
      };
    };

    /**
     * Populates context with given storage state. This method can be used to initialize context with logged-in information obtained via `browserContext.storageState([options])`. Either a path to the file with saved storage, or an object with the following fields:
     */
    storageState?: string|{
      /**
       * Optional cookies to set for context
       */
      cookies?: Array<{
        /**
         * **required**
         */
        name: string;

        /**
         * **required**
         */
        value: string;

        /**
         * Optional either url or domain / path are required
         */
        url?: string;

        /**
         * Optional either url or domain / path are required
         */
        domain?: string;

        /**
         * Optional either url or domain / path are required
         */
        path?: string;

        /**
         * Optional Unix time in seconds.
         */
        expires?: number;

        /**
         * Optional httpOnly flag
         */
        httpOnly?: boolean;

        /**
         * Optional secure flag
         */
        secure?: boolean;

        /**
         * Optional sameSite flag
         */
        sameSite?: "Lax"|"None"|"Strict";
      }>;

      /**
       * Optional localStorage to set for context
       */
      origins?: Array<{
        origin: string;

        localStorage: Array<{
          name: string;

          value: string;
        }>;
      }>;
    };

    /**
     * Changes the timezone of the context. See ICU’s `metaZones.txt` for a list of supported timezone IDs.
     */
    timezoneId?: string;

    /**
     * Specific user agent to use in this context.
     */
    userAgent?: string;

    /**
     * **NOTE** Use `recordVideo` instead, it takes precedence over `videoSize`. Specifies dimensions of the automatically recorded video. Can only be used if `videosPath` is set. If not specified the size will be equal to `viewport`. If `viewport` is not configured explicitly the video size defaults to 1280x720. Actual picture of the page will be scaled down if necessary to fit specified size.
     */
    videoSize?: {
      /**
       * Video frame width.
       */
      width: number;

      /**
       * Video frame height.
       */
      height: number;
    };

    /**
     * **NOTE** Use `recordVideo` instead, it takes precedence over `videosPath`. Enables video recording for all pages to `videosPath` directory. If not specified, videos are not recorded. Make sure to await `browserContext.close()` for videos to be saved.
     */
    videosPath?: string;

    /**
     * Sets a consistent viewport for each page. Defaults to an 1280x720 viewport. `null` disables the default viewport.
     */
    viewport?: null|{
      /**
       * page width in pixels.
       */
      width: number;

      /**
       * page height in pixels.
       */
      height: number;
    };
  }): Promise<Page>;

  /**
   * Returns the browser version.
   */
  version(): string;
}

/**
 * ConsoleMessage objects are dispatched by page via the `page.on('console')` event.
 */
export interface ConsoleMessage {
  args(): Array<JSHandle>;

  location(): {
    /**
     * URL of the resource.
     */
    url: string;

    /**
     * 0-based line number in the resource.
     */
    lineNumber: number;

    /**
     * 0-based column number in the resource.
     */
    columnNumber: number;
  };

  text(): string;

  /**
   * One of the following values: `'log'`, `'debug'`, `'info'`, `'error'`, `'warning'`, `'dir'`, `'dirxml'`, `'table'`, `'trace'`, `'clear'`, `'startGroup'`, `'startGroupCollapsed'`, `'endGroup'`, `'assert'`, `'profile'`, `'profileEnd'`, `'count'`, `'timeEnd'`.
   */
  type(): string;
}

/**
 * Dialog objects are dispatched by page via the `page.on('dialog')` event.
 * An example of using `Dialog` class:
 * ```js
 * const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.
 * 
 * (async () => {
 *   const browser = await chromium.launch();
 *   const page = await browser.newPage();
 *   page.on('dialog', async dialog => {
 *     console.log(dialog.message());
 *     await dialog.dismiss();
 *     await browser.close();
 *   });
 *   page.evaluate(() => alert('1'));
 * })();
 * ```
 */
export interface Dialog {
  /**
   * Returns when the dialog has been accepted.
   * @param promptText A text to enter in prompt. Does not cause any effects if the dialog's `type` is not prompt. Optional.
   */
  accept(promptText?: string): Promise<void>;

  /**
   * If dialog is prompt, returns default prompt value. Otherwise, returns empty string.
   */
  defaultValue(): string;

  /**
   * Returns when the dialog has been dismissed.
   */
  dismiss(): Promise<void>;

  /**
   * A message displayed in the dialog.
   */
  message(): string;

  /**
   * Returns dialog's type, can be one of `alert`, `beforeunload`, `confirm` or `prompt`.
   */
  type(): string;
}

/**
 * Download objects are dispatched by page via the `page.on('download')` event.
 * All the downloaded files belonging to the browser context are deleted when the browser context is closed. All downloaded files are deleted when the browser closes.
 * Download event is emitted once the download starts. Download path becomes available once download completes:
 * ```js
 * const [ download ] = await Promise.all([
 *   page.waitForEvent('download'), // wait for download to start
 *   page.click('a')
 * ]);
 * // wait for download to complete
 * const path = await download.path();
 * ...
 * ```
 * 
 * > **NOTE** Browser context **must** be created with the `acceptDownloads` set to `true` when user needs access to the downloaded content. If `acceptDownloads` is not set or set to `false`, download events are emitted, but the actual download is not performed and user has no access to the downloaded files.
 */
export interface Download {
  /**
   * Returns readable stream for current download or `null` if download failed.
   */
  createReadStream(): Promise<null|Readable>;

  /**
   * Deletes the downloaded file.
   */
  delete(): Promise<void>;

  /**
   * Returns download error if any.
   */
  failure(): Promise<null|string>;

  /**
   * Returns path to the downloaded file in case of successful download.
   */
  path(): Promise<null|string>;

  /**
   * Saves the download to a user-specified path.
   * @param path Path where the download should be saved.
   */
  saveAs(path: string): Promise<void>;

  /**
   * Returns suggested filename for this download. It is typically computed by the browser from the `Content-Disposition` response header or the `download` attribute. See the spec on whatwg. Different browsers can use different logic for computing it.
   */
  suggestedFilename(): string;

  /**
   * Returns downloaded url.
   */
  url(): string;
}

/**
 * When browser context is created with the `videosPath` option, each page has a video object associated with it.
 * ```js
 * console.log(await page.video().path());
 * ```
 */
export interface Video {
  /**
   * Returns the file system path this video will be recorded to. The video is guaranteed to be written to the filesystem upon closing the browser context.
   */
  path(): Promise<string>;
}

/**
 * FileChooser objects are dispatched by the page in the `page.on('filechooser')` event.
 * ```js
 * page.on('filechooser', async (fileChooser) => {
 *   await fileChooser.setFiles('/tmp/myfile.pdf');
 * });
 * ```
 */
export interface FileChooser {
  /**
   * Returns input element associated with this file chooser.
   */
  element(): ElementHandle;

  /**
   * Returns whether this file chooser accepts multiple files.
   */
  isMultiple(): boolean;

  /**
   * Returns page this file chooser belongs to.
   */
  page(): Page;

  /**
   * Sets the value of the file input this chooser is associated with. If some of the `filePaths` are relative paths, then they are resolved relative to the the current working directory. For empty array, clears the selected files.
   * @param files 
   * @param options 
   */
  setFiles(files: string|Array<string>|{
    /**
     * File name **required**
     */
    name: string;

    /**
     * File type **required**
     */
    mimeType: string;

    /**
     * File content **required**
     */
    buffer: Buffer;
  }|Array<{
    /**
     * File name **required**
     */
    name: string;

    /**
     * File type **required**
     */
    mimeType: string;

    /**
     * File content **required**
     */
    buffer: Buffer;
  }>, options?: {
    /**
     * Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to `false`.
     */
    noWaitAfter?: boolean;

    /**
     * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
     */
    timeout?: number;
  }): Promise<void>;
}

/**
 * Keyboard provides an api for managing a virtual keyboard. The high level api is `keyboard.type(text[, options])`, which takes raw characters and generates proper keydown, keypress/input, and keyup events on your page.
 * For finer control, you can use `keyboard.down(key)`, `keyboard.up(key)`, and `keyboard.insertText(text)` to manually fire events as if they were generated from a real keyboard.
 * An example of holding down `Shift` in order to select and delete some text:
 * ```js
 * await page.keyboard.type('Hello World!');
 * await page.keyboard.press('ArrowLeft');
 * 
 * await page.keyboard.down('Shift');
 * for (let i = 0; i < ' World'.length; i++)
 *   await page.keyboard.press('ArrowLeft');
 * await page.keyboard.up('Shift');
 * 
 * await page.keyboard.press('Backspace');
 * // Result text will end up saying 'Hello!'
 * ```
 * An example of pressing uppercase `A`
 * ```js
 * await page.keyboard.press('Shift+KeyA');
 * // or
 * await page.keyboard.press('Shift+A');
 * ```
 * An example to trigger select-all with the keyboard
 * ```js
 * // on Windows and Linux
 * await page.keyboard.press('Control+A');
 * // on macOS
 * await page.keyboard.press('Meta+A');
 * ```
 */
export interface Keyboard {
  /**
   * Dispatches a `keydown` event.
   * `key` can specify the intended keyboardEvent.key value or a single character to generate the text for. A superset of the `key` values can be found here. Examples of the keys are:
   * `F1` - `F12`, `Digit0`- `Digit9`, `KeyA`- `KeyZ`, `Backquote`, `Minus`, `Equal`, `Backslash`, `Backspace`, `Tab`, `Delete`, `Escape`, `ArrowDown`, `End`, `Enter`, `Home`, `Insert`, `PageDown`, `PageUp`, `ArrowRight`, `ArrowUp`, etc.
   * Following modification shortcuts are also supported: `Shift`, `Control`, `Alt`, `Meta`, `ShiftLeft`.
   * Holding down `Shift` will type the text that corresponds to the `key` in the upper case.
   * If `key` is a single character, it is case-sensitive, so the values `a` and `A` will generate different respective texts.
   * If `key` is a modifier key, `Shift`, `Meta`, `Control`, or `Alt`, subsequent key presses will be sent with that modifier active. To release the modifier key, use `keyboard.up(key)`.
   * After the key is pressed once, subsequent calls to `keyboard.down(key)` will have repeat set to true. To release the key, use `keyboard.up(key)`.
   * 
   * > **NOTE** Modifier keys DO influence `keyboard.down`. Holding down `Shift` will type the text in upper case.
   * @param key Name of the key to press or a character to generate, such as `ArrowLeft` or `a`.
   */
  down(key: string): Promise<void>;

  /**
   * Dispatches only `input` event, does not emit the `keydown`, `keyup` or `keypress` events.
   * ```js
   * page.keyboard.insertText('嗨');
   * ```
   * 
   * > **NOTE** Modifier keys DO NOT effect `keyboard.insertText`. Holding down `Shift` will not type the text in upper case.
   * @param text Sets input to the specified text value.
   */
  insertText(text: string): Promise<void>;

  /**
   * `key` can specify the intended keyboardEvent.key value or a single character to generate the text for. A superset of the `key` values can be found here. Examples of the keys are:
   * `F1` - `F12`, `Digit0`- `Digit9`, `KeyA`- `KeyZ`, `Backquote`, `Minus`, `Equal`, `Backslash`, `Backspace`, `Tab`, `Delete`, `Escape`, `ArrowDown`, `End`, `Enter`, `Home`, `Insert`, `PageDown`, `PageUp`, `ArrowRight`, `ArrowUp`, etc.
   * Following modification shortcuts are also supported: `Shift`, `Control`, `Alt`, `Meta`, `ShiftLeft`.
   * Holding down `Shift` will type the text that corresponds to the `key` in the upper case.
   * If `key` is a single character, it is case-sensitive, so the values `a` and `A` will generate different respective texts.
   * Shortcuts such as `key: "Control+o"` or `key: "Control+Shift+T"` are supported as well. When speficied with the modifier, modifier is pressed and being held while the subsequent key is being pressed.
   * ```js
   * const page = await browser.newPage();
   * await page.goto('https://keycode.info');
   * await page.keyboard.press('A');
   * await page.screenshot({ path: 'A.png' });
   * await page.keyboard.press('ArrowLeft');
   * await page.screenshot({ path: 'ArrowLeft.png' });
   * await page.keyboard.press('Shift+O');
   * await page.screenshot({ path: 'O.png' });
   * await browser.close();
   * ```
   * Shortcut for `keyboard.down(key)` and `keyboard.up(key)`.
   * @param key Name of the key to press or a character to generate, such as `ArrowLeft` or `a`.
   * @param options 
   */
  press(key: string, options?: {
    /**
     * Time to wait between `keydown` and `keyup` in milliseconds. Defaults to 0.
     */
    delay?: number;
  }): Promise<void>;

  /**
   * Sends a `keydown`, `keypress`/`input`, and `keyup` event for each character in the text.
   * To press a special key, like `Control` or `ArrowDown`, use `keyboard.press(key[, options])`.
   * ```js
   * await page.keyboard.type('Hello'); // Types instantly
   * await page.keyboard.type('World', {delay: 100}); // Types slower, like a user
   * ```
   * 
   * > **NOTE** Modifier keys DO NOT effect `keyboard.type`. Holding down `Shift` will not type the text in upper case.
   * @param text A text to type into a focused element.
   * @param options 
   */
  type(text: string, options?: {
    /**
     * Time to wait between key presses in milliseconds. Defaults to 0.
     */
    delay?: number;
  }): Promise<void>;

  /**
   * Dispatches a `keyup` event.
   * @param key Name of the key to press or a character to generate, such as `ArrowLeft` or `a`.
   */
  up(key: string): Promise<void>;
}

/**
 * The Mouse class operates in main-frame CSS pixels relative to the top-left corner of the viewport.
 * Every `page` object has its own Mouse, accessible with page.mouse.
 * ```js
 * // Using ‘page.mouse’ to trace a 100x100 square.
 * await page.mouse.move(0, 0);
 * await page.mouse.down();
 * await page.mouse.move(0, 100);
 * await page.mouse.move(100, 100);
 * await page.mouse.move(100, 0);
 * await page.mouse.move(0, 0);
 * await page.mouse.up();
 * ```
 */
export interface Mouse {
  /**
   * Shortcut for `mouse.move(x, y[, options])`, `mouse.down([options])`, `mouse.up([options])`.
   * @param x 
   * @param y 
   * @param options 
   */
  click(x: number, y: number, options?: {
    /**
     * Defaults to `left`.
     */
    button?: "left"|"middle"|"right";

    /**
     * defaults to 1. See UIEvent.detail.
     */
    clickCount?: number;

    /**
     * Time to wait between `mousedown` and `mouseup` in milliseconds. Defaults to 0.
     */
    delay?: number;
  }): Promise<void>;

  /**
   * Shortcut for `mouse.move(x, y[, options])`, `mouse.down([options])`, `mouse.up([options])`, `mouse.down([options])` and `mouse.up([options])`.
   * @param x 
   * @param y 
   * @param options 
   */
  dblclick(x: number, y: number, options?: {
    /**
     * Defaults to `left`.
     */
    button?: "left"|"middle"|"right";

    /**
     * Time to wait between `mousedown` and `mouseup` in milliseconds. Defaults to 0.
     */
    delay?: number;
  }): Promise<void>;

  /**
   * Dispatches a `mousedown` event.
   * @param options 
   */
  down(options?: {
    /**
     * Defaults to `left`.
     */
    button?: "left"|"middle"|"right";

    /**
     * defaults to 1. See UIEvent.detail.
     */
    clickCount?: number;
  }): Promise<void>;

  /**
   * Dispatches a `mousemove` event.
   * @param x 
   * @param y 
   * @param options 
   */
  move(x: number, y: number, options?: {
    /**
     * defaults to 1. Sends intermediate `mousemove` events.
     */
    steps?: number;
  }): Promise<void>;

  /**
   * Dispatches a `mouseup` event.
   * @param options 
   */
  up(options?: {
    /**
     * Defaults to `left`.
     */
    button?: "left"|"middle"|"right";

    /**
     * defaults to 1. See UIEvent.detail.
     */
    clickCount?: number;
  }): Promise<void>;
}

/**
 * The Touchscreen class operates in main-frame CSS pixels relative to the top-left corner of the viewport. Methods on the touchscreen can only be used in browser contexts that have been intialized with `hasTouch` set to true.
 */
export interface Touchscreen {
  /**
   * Dispatches a `touchstart` and `touchend` event with a single touch at the position (`x`,`y`).
   * @param x 
   * @param y 
   */
  tap(x: number, y: number): Promise<void>;
}

/**
 * Whenever the page sends a request for a network resource the following sequence of events are emitted by Page:
 * - `page.on('request')` emitted when the request is issued by the page.
 * - `page.on('response')` emitted when/if the response status and headers are received for the request.
 * - `page.on('requestfinished')` emitted when the response body is downloaded and the request is complete.
 * If request fails at some point, then instead of `'requestfinished'` event (and possibly instead of 'response' event), the  `page.on('requestfailed')` event is emitted.
 * 
 * > **NOTE** HTTP Error responses, such as 404 or 503, are still successful responses from HTTP standpoint, so request will complete with `'requestfinished'` event.
 * If request gets a 'redirect' response, the request is successfully finished with the 'requestfinished' event, and a new request is  issued to a redirected url.
 */
export interface Request {
  /**
   * The method returns `null` unless this request has failed, as reported by `requestfailed` event.
   * Example of logging of all the failed requests:
   * ```js
   * page.on('requestfailed', request => {
   *   console.log(request.url() + ' ' + request.failure().errorText);
   * });
   * ```
   */
  failure(): null|{
    /**
     * Human-readable error message, e.g. `'net::ERR_FAILED'`.
     */
    errorText: string;
  };

  /**
   * Returns the Frame that initiated this request.
   */
  frame(): Frame;

  /**
   * An object with HTTP headers associated with the request. All header names are lower-case.
   */
  headers(): { [key: string]: string; };

  /**
   * Whether this request is driving frame's navigation.
   */
  isNavigationRequest(): boolean;

  /**
   * Request's method (GET, POST, etc.)
   */
  method(): string;

  /**
   * Request's post body, if any.
   */
  postData(): null|string;

  /**
   * Request's post body in a binary form, if any.
   */
  postDataBuffer(): null|Buffer;

  /**
   * Returns parsed request's body for `form-urlencoded` and JSON as a fallback if any.
   * When the response is `application/x-www-form-urlencoded` then a key/value object of the values will be returned. Otherwise it will be parsed as JSON.
   */
  postDataJSON(): null|Object;

  /**
   * Request that was redirected by the server to this one, if any.
   * When the server responds with a redirect, Playwright creates a new Request object. The two requests are connected by `redirectedFrom()` and `redirectedTo()` methods. When multiple server redirects has happened, it is possible to construct the whole redirect chain by repeatedly calling `redirectedFrom()`.
   * For example, if the website `http://example.com` redirects to `https://example.com`:
   * ```js
   * const response = await page.goto('http://example.com');
   * console.log(response.request().redirectedFrom().url()); // 'http://example.com'
   * ```
   * If the website `https://google.com` has no redirects:
   * ```js
   * const response = await page.goto('https://google.com');
   * console.log(response.request().redirectedFrom()); // null
   * ```
   */
  redirectedFrom(): null|Request;

  /**
   * New request issued by the browser if the server responded with redirect.
   * This method is the opposite of `request.redirectedFrom()`:
   * ```js
   * console.log(request.redirectedFrom().redirectedTo() === request); // true
   * ```
   */
  redirectedTo(): null|Request;

  /**
   * Contains the request's resource type as it was perceived by the rendering engine. ResourceType will be one of the following: `document`, `stylesheet`, `image`, `media`, `font`, `script`, `texttrack`, `xhr`, `fetch`, `eventsource`, `websocket`, `manifest`, `other`.
   */
  resourceType(): string;

  /**
   * Returns the matching Response object, or `null` if the response was not received due to error.
   */
  response(): Promise<null|Response>;

  /**
   * Returns resource timing information for given request. Most of the timing values become available upon the response, `responseEnd` becomes available when request finishes. Find more information at Resource Timing API.
   * ```js
   * const [request] = await Promise.all([
   *   page.waitForEvent('requestfinished'),
   *   page.goto(httpsServer.EMPTY_PAGE)
   * ]);
   * console.log(request.timing());
   * ```
   */
  timing(): {
    /**
     * Request start time in milliseconds elapsed since January 1, 1970 00:00:00 UTC
     */
    startTime: number;

    /**
     * Time immediately before the browser starts the domain name lookup for the resource. The value is given in milliseconds relative to `startTime`, -1 if not available.
     */
    domainLookupStart: number;

    /**
     * Time immediately after the browser starts the domain name lookup for the resource. The value is given in milliseconds relative to `startTime`, -1 if not available.
     */
    domainLookupEnd: number;

    /**
     * Time immediately before the user agent starts establishing the connection to the server to retrieve the resource. The value is given in milliseconds relative to `startTime`, -1 if not available.
     */
    connectStart: number;

    /**
     * Time immediately before the browser starts the handshake process to secure the current connection. The value is given in milliseconds relative to `startTime`, -1 if not available.
     */
    secureConnectionStart: number;

    /**
     * Time immediately before the user agent starts establishing the connection to the server to retrieve the resource. The value is given in milliseconds relative to `startTime`, -1 if not available.
     */
    connectEnd: number;

    /**
     * Time immediately before the browser starts requesting the resource from the server, cache, or local resource. The value is given in milliseconds relative to `startTime`, -1 if not available.
     */
    requestStart: number;

    /**
     * Time immediately after the browser starts requesting the resource from the server, cache, or local resource. The value is given in milliseconds relative to `startTime`, -1 if not available.
     */
    responseStart: number;

    /**
     * Time immediately after the browser receives the last byte of the resource or immediately before the transport connection is closed, whichever comes first. The value is given in milliseconds relative to `startTime`, -1 if not available.
     */
    responseEnd: number;
  };

  /**
   * URL of the request.
   */
  url(): string;
}

/**
 * Response class represents responses which are received by page.
 */
export interface Response {
  /**
   * Returns the buffer with response body.
   */
  body(): Promise<Buffer>;

  /**
   * Waits for this response to finish, returns failure error if request failed.
   */
  finished(): Promise<null|Error>;

  /**
   * Returns the Frame that initiated this response.
   */
  frame(): Frame;

  /**
   * Returns the object with HTTP headers associated with the response. All header names are lower-case.
   */
  headers(): { [key: string]: string; };

  /**
   * Returns the JSON representation of response body.
   * This method will throw if the response body is not parsable via `JSON.parse`.
   */
  json(): Promise<Serializable>;

  /**
   * Contains a boolean stating whether the response was successful (status in the range 200-299) or not.
   */
  ok(): boolean;

  /**
   * Returns the matching Request object.
   */
  request(): Request;

  /**
   * Contains the status code of the response (e.g., 200 for a success).
   */
  status(): number;

  /**
   * Contains the status text of the response (e.g. usually an "OK" for a success).
   */
  statusText(): string;

  /**
   * Returns the text representation of response body.
   */
  text(): Promise<string>;

  /**
   * Contains the URL of the response.
   */
  url(): string;
}

/**
 * Selectors can be used to install custom selector engines. See Working with selectors for more information.
 */
export interface Selectors {
  /**
   * An example of registering selector engine that queries elements based on a tag name:
   * ```js
   * const { selectors, firefox } = require('playwright');  // Or 'chromium' or 'webkit'.
   * 
   * (async () => {
   *   // Must be a function that evaluates to a selector engine instance.
   *   const createTagNameEngine = () => ({
   *     // Returns the first element matching given selector in the root's subtree.
   *     query(root, selector) {
   *       return root.querySelector(selector);
   *     },
   * 
   *     // Returns all elements matching given selector in the root's subtree.
   *     queryAll(root, selector) {
   *       return Array.from(root.querySelectorAll(selector));
   *     }
   *   });
   * 
   *   // Register the engine. Selectors will be prefixed with "tag=".
   *   await selectors.register('tag', createTagNameEngine);
   * 
   *   const browser = await firefox.launch();
   *   const page = await browser.newPage();
   *   await page.setContent(`<div><button>Click me</button></div>`);
   * 
   *   // Use the selector prefixed with its name.
   *   const button = await page.$('tag=button');
   *   // Combine it with other selector engines.
   *   await page.click('tag=div >> text="Click me"');
   *   // Can use it in any methods supporting selectors.
   *   const buttonCount = await page.$$eval('tag=button', buttons => buttons.length);
   * 
   *   await browser.close();
   * })();
   * ```
   * @param name Name that is used in selectors as a prefix, e.g. `{name: 'foo'}` enables `foo=myselectorbody` selectors. May only contain `[a-zA-Z0-9_]` characters.
   * @param script Script that evaluates to a selector engine instance.
   * @param options 
   */
  register(name: string, script: Function|string|{
    /**
     * Path to the JavaScript file. If `path` is a relative path, then it is resolved relative to the current working directory.
     */
    path?: string;

    /**
     * Raw script content.
     */
    content?: string;
  }, options?: {
    /**
     * Whether to run this selector engine in isolated JavaScript environment. This environment has access to the same DOM, but not any JavaScript objects from the frame's scripts. Defaults to `false`. Note that running as a content script is not guaranteed when this engine is used together with other registered engines.
     */
    contentScript?: boolean;
  }): Promise<void>;
}

/**
 * Whenever a network route is set up with `page.route(url, handler)` or `browserContext.route(url, handler)`, the `Route` object allows to handle the route.
 */
export interface Route {
  /**
   * Aborts the route's request.
   * @param errorCode Optional error code. Defaults to `failed`, could be one of the following: - `'aborted'` - An operation was aborted (due to user action)
   * - `'accessdenied'` - Permission to access a resource, other than the network, was denied
   * - `'addressunreachable'` - The IP address is unreachable. This usually means that there is no route to the specified host or network.
   * - `'blockedbyclient'` - The client chose to block the request.
   * - `'blockedbyresponse'` - The request failed because the response was delivered along with requirements which are not met ('X-Frame-Options' and 'Content-Security-Policy' ancestor checks, for instance).
   * - `'connectionaborted'` - A connection timed out as a result of not receiving an ACK for data sent.
   * - `'connectionclosed'` - A connection was closed (corresponding to a TCP FIN).
   * - `'connectionfailed'` - A connection attempt failed.
   * - `'connectionrefused'` - A connection attempt was refused.
   * - `'connectionreset'` - A connection was reset (corresponding to a TCP RST).
   * - `'internetdisconnected'` - The Internet connection has been lost.
   * - `'namenotresolved'` - The host name could not be resolved.
   * - `'timedout'` - An operation timed out.
   * - `'failed'` - A generic failure occurred.
   */
  abort(errorCode?: string): Promise<void>;

  /**
   * Continues route's request with optional overrides.
   * ```js
   * await page.route('**\/*', (route, request) => {
   *   // Override headers
   *   const headers = {
   *     ...request.headers(),
   *     foo: 'bar', // set "foo" header
   *     origin: undefined, // remove "origin" header
   *   };
   *   route.continue({headers});
   * });
   * ```
   * @param overrides Optional request overrides, can override following properties:
   */
  continue(overrides?: {
    /**
     * If set changes the request URL. New URL must have same protocol as original one.
     */
    url?: string;

    /**
     * If set changes the request method (e.g. GET or POST)
     */
    method?: string;

    /**
     * If set changes the post data of request
     */
    postData?: string|Buffer;

    /**
     * If set changes the request HTTP headers. Header values will be converted to a string.
     */
    headers?: { [key: string]: string; };
  }): Promise<void>;

  /**
   * Fulfills route's request with given response.
   * An example of fulfilling all requests with 404 responses:
   * ```js
   * await page.route('**\/*', route => {
   *   route.fulfill({
   *     status: 404,
   *     contentType: 'text/plain',
   *     body: 'Not Found!'
   *   });
   * });
   * ```
   * An example of serving static file:
   * ```js
   * await page.route('**\/xhr_endpoint', route => route.fulfill({ path: 'mock_data.json' }));
   * ```
   * @param response Response that will fulfill this route's request.
   */
  fulfill(response: {
    /**
     * Response status code, defaults to `200`.
     */
    status?: number;

    /**
     * Optional response headers. Header values will be converted to a string.
     */
    headers?: { [key: string]: string; };

    /**
     * If set, equals to setting `Content-Type` response header.
     */
    contentType?: string;

    /**
     * Optional response body.
     */
    body?: string|Buffer;

    /**
     * Optional file path to respond with. The content type will be inferred from file extension. If `path` is a relative path, then it is resolved relative to the current working directory.
     */
    path?: string;
  }): Promise<void>;

  /**
   * A request to be routed.
   */
  request(): Request;
}

/**
 * The WebSocket class represents websocket connections in the page.
 */
export interface WebSocket {
  /**
   * Fired when the websocket closes.
   */
  on(event: 'close', listener: () => void): this;

  /**
   * Fired when the websocket recieves a frame.
   */
  on(event: 'framereceived', listener: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => void): this;

  /**
   * Fired when the websocket sends a frame.
   */
  on(event: 'framesent', listener: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => void): this;

  /**
   * Fired when the websocket has an error.
   */
  on(event: 'socketerror', listener: (string: String) => void): this;

  /**
   * Fired when the websocket closes.
   */
  once(event: 'close', listener: () => void): this;

  /**
   * Fired when the websocket recieves a frame.
   */
  once(event: 'framereceived', listener: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => void): this;

  /**
   * Fired when the websocket sends a frame.
   */
  once(event: 'framesent', listener: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => void): this;

  /**
   * Fired when the websocket has an error.
   */
  once(event: 'socketerror', listener: (string: String) => void): this;

  /**
   * Fired when the websocket closes.
   */
  addListener(event: 'close', listener: () => void): this;

  /**
   * Fired when the websocket recieves a frame.
   */
  addListener(event: 'framereceived', listener: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => void): this;

  /**
   * Fired when the websocket sends a frame.
   */
  addListener(event: 'framesent', listener: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => void): this;

  /**
   * Fired when the websocket has an error.
   */
  addListener(event: 'socketerror', listener: (string: String) => void): this;

  /**
   * Fired when the websocket closes.
   */
  removeListener(event: 'close', listener: () => void): this;

  /**
   * Fired when the websocket recieves a frame.
   */
  removeListener(event: 'framereceived', listener: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => void): this;

  /**
   * Fired when the websocket sends a frame.
   */
  removeListener(event: 'framesent', listener: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => void): this;

  /**
   * Fired when the websocket has an error.
   */
  removeListener(event: 'socketerror', listener: (string: String) => void): this;

  /**
   * Fired when the websocket closes.
   */
  off(event: 'close', listener: () => void): this;

  /**
   * Fired when the websocket recieves a frame.
   */
  off(event: 'framereceived', listener: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => void): this;

  /**
   * Fired when the websocket sends a frame.
   */
  off(event: 'framesent', listener: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => void): this;

  /**
   * Fired when the websocket has an error.
   */
  off(event: 'socketerror', listener: (string: String) => void): this;

  /**
   * Indicates that the web socket has been closed.
   */
  isClosed(): boolean;

  /**
   * Contains the URL of the WebSocket.
   */
  url(): string;

  /**
   * Fired when the websocket closes.
   */
  waitForEvent(event: 'close', optionsOrPredicate?: { predicate?: () => boolean, timeout?: number } | (() => boolean)): Promise<void>;

  /**
   * Fired when the websocket recieves a frame.
   */
  waitForEvent(event: 'framereceived', optionsOrPredicate?: { predicate?: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => boolean, timeout?: number } | ((data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => boolean)): Promise<{
  /**
   * frame payload
   */
  payload: string|Buffer;
}>;

  /**
   * Fired when the websocket sends a frame.
   */
  waitForEvent(event: 'framesent', optionsOrPredicate?: { predicate?: (data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => boolean, timeout?: number } | ((data: {
  /**
   * frame payload
   */
  payload: string|Buffer;
}) => boolean)): Promise<{
  /**
   * frame payload
   */
  payload: string|Buffer;
}>;

  /**
   * Fired when the websocket has an error.
   */
  waitForEvent(event: 'socketerror', optionsOrPredicate?: { predicate?: (string: String) => boolean, timeout?: number } | ((string: String) => boolean)): Promise<String>;

}

export interface BrowserServer {
  /**
   * Emitted when the browser server closes.
   */
  on(event: 'close', listener: () => void): this;

  /**
   * Emitted when the browser server closes.
   */
  once(event: 'close', listener: () => void): this;

  /**
   * Emitted when the browser server closes.
   */
  addListener(event: 'close', listener: () => void): this;

  /**
   * Emitted when the browser server closes.
   */
  removeListener(event: 'close', listener: () => void): this;

  /**
   * Emitted when the browser server closes.
   */
  off(event: 'close', listener: () => void): this;

  /**
   * Closes the browser gracefully and makes sure the process is terminated.
   */
  close(): Promise<void>;

  /**
   * Kills the browser process and waits for the process to exit.
   */
  kill(): Promise<void>;

  /**
   * Spawned browser application process.
   */
  process(): ChildProcess;

  /**
   * Browser websocket url.
   * Browser websocket endpoint which can be used as an argument to `browserType.connect(params)` to establish connection to the browser.
   */
  wsEndpoint(): string;
}

/**
 * Playwright generates a lot of logs and they are accessible via the pluggable logger sink.
 * ```js
 * const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.
 * 
 * (async () => {
 *   const browser = await chromium.launch({
 *     logger: {
 *       isEnabled: (name, severity) => name === 'browser',
 *       log: (name, severity, message, args) => console.log(`${name} ${message}`)
 *     }
 *   });
 *   ...
 * })();
 * ```
 */
export interface Logger {
  /**
   * Determines whether sink is interested in the logger with the given name and severity.
   * @param name logger name
   * @param severity 
   */
  isEnabled(name: string, severity: "error"|"info"|"verbose"|"warning"): boolean;

  /**
   * @param name logger name
   * @param severity 
   * @param message log message format
   * @param args message arguments
   * @param hints optional formatting hints
   */
  log(name: string, severity: "error"|"info"|"verbose"|"warning", message: string|Error, args: Array<Object>, hints: {
    /**
     * Optional preferred logger color.
     */
    color?: string;
  }): void;
}

/**
 * Chromium-specific features including background pages, service worker support, etc.
 * ```js
 * const backgroundPage = await context.waitForEvent('backgroundpage');
 * ```
 */
export interface ChromiumBrowserContext extends BrowserContext {
  /**
   * Emitted when new background page is created in the context.
   * 
   * > **NOTE** Only works with persistent context.
   */
  on(event: 'backgroundpage', listener: (page: Page) => void): this;

  /**
   * Emitted when new service worker is created in the context.
   */
  on(event: 'serviceworker', listener: (worker: Worker) => void): this;

  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  on(event: 'close', listener: () => void): this;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  on(event: 'page', listener: (page: Page) => void): this;

  /**
   * Emitted when new background page is created in the context.
   * 
   * > **NOTE** Only works with persistent context.
   */
  once(event: 'backgroundpage', listener: (page: Page) => void): this;

  /**
   * Emitted when new service worker is created in the context.
   */
  once(event: 'serviceworker', listener: (worker: Worker) => void): this;

  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  once(event: 'close', listener: () => void): this;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  once(event: 'page', listener: (page: Page) => void): this;

  /**
   * Emitted when new background page is created in the context.
   * 
   * > **NOTE** Only works with persistent context.
   */
  addListener(event: 'backgroundpage', listener: (page: Page) => void): this;

  /**
   * Emitted when new service worker is created in the context.
   */
  addListener(event: 'serviceworker', listener: (worker: Worker) => void): this;

  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  addListener(event: 'close', listener: () => void): this;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  addListener(event: 'page', listener: (page: Page) => void): this;

  /**
   * Emitted when new background page is created in the context.
   * 
   * > **NOTE** Only works with persistent context.
   */
  removeListener(event: 'backgroundpage', listener: (page: Page) => void): this;

  /**
   * Emitted when new service worker is created in the context.
   */
  removeListener(event: 'serviceworker', listener: (worker: Worker) => void): this;

  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  removeListener(event: 'close', listener: () => void): this;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  removeListener(event: 'page', listener: (page: Page) => void): this;

  /**
   * Emitted when new background page is created in the context.
   * 
   * > **NOTE** Only works with persistent context.
   */
  off(event: 'backgroundpage', listener: (page: Page) => void): this;

  /**
   * Emitted when new service worker is created in the context.
   */
  off(event: 'serviceworker', listener: (worker: Worker) => void): this;

  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  off(event: 'close', listener: () => void): this;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  off(event: 'page', listener: (page: Page) => void): this;

  /**
   * All existing background pages in the context.
   */
  backgroundPages(): Array<Page>;

  /**
   * Returns the newly created session.
   * @param page Page to create new session for.
   */
  newCDPSession(page: Page): Promise<CDPSession>;

  /**
   * All existing service workers in the context.
   */
  serviceWorkers(): Array<Worker>;

  /**
   * Emitted when new background page is created in the context.
   * 
   * > **NOTE** Only works with persistent context.
   */
  waitForEvent(event: 'backgroundpage', optionsOrPredicate?: { predicate?: (page: Page) => boolean, timeout?: number } | ((page: Page) => boolean)): Promise<Page>;

  /**
   * Emitted when new service worker is created in the context.
   */
  waitForEvent(event: 'serviceworker', optionsOrPredicate?: { predicate?: (worker: Worker) => boolean, timeout?: number } | ((worker: Worker) => boolean)): Promise<Worker>;

  /**
   * Emitted when Browser context gets closed. This might happen because of one of the following:
   * - Browser context is closed.
   * - Browser application is closed or crashed.
   * - The `browser.close()` method was called.
   */
  waitForEvent(event: 'close', optionsOrPredicate?: { predicate?: () => boolean, timeout?: number } | (() => boolean)): Promise<void>;

  /**
   * The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also `page.on('popup')` to receive events about popups relevant to a specific page.
   * The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with `window.open('http://example.com')`, this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.
   * ```js
   * const [page] = await Promise.all([
   *   context.waitForEvent('page'),
   *   page.click('a[target=_blank]'),
   * ]);
   * console.log(await page.evaluate('location.href'));
   * ```
   * 
   * > **NOTE** Use `page.waitForLoadState([state, options])` to wait until the page gets to a particular state (you should not need it in most cases).
   */
  waitForEvent(event: 'page', optionsOrPredicate?: { predicate?: (page: Page) => boolean, timeout?: number } | ((page: Page) => boolean)): Promise<Page>;

}

/**
 * Coverage gathers information about parts of JavaScript and CSS that were used by the page.
 * An example of using JavaScript coverage to produce Istambul report for page load:
 * ```js
 * const { chromium } = require('playwright');
 * const v8toIstanbul = require('v8-to-istanbul');
 * 
 * (async() => {
 *   const browser = await chromium.launch();
 *   const page = await browser.newPage();
 *   await page.coverage.startJSCoverage();
 *   await page.goto('https://chromium.org');
 *   const coverage = await page.coverage.stopJSCoverage();
 *   for (const entry of coverage) {
 *     const converter = new v8toIstanbul('', 0, { source: entry.source });
 *     await converter.load();
 *     converter.applyCoverage(entry.functions);
 *     console.log(JSON.stringify(converter.toIstanbul()));
 *   }
 *   await browser.close();
 * })();
 * ```
 */
export interface ChromiumCoverage {
  /**
   * Returns coverage is started
   * @param options 
   */
  startCSSCoverage(options?: {
    /**
     * Whether to reset coverage on every navigation. Defaults to `true`.
     */
    resetOnNavigation?: boolean;
  }): Promise<void>;

  /**
   * Returns coverage is started
   * 
   * > **NOTE** Anonymous scripts are ones that don't have an associated url. These are scripts that are dynamically created on the page using `eval` or `new Function`. If `reportAnonymousScripts` is set to `true`, anonymous scripts will have `__playwright_evaluation_script__` as their URL.
   * @param options 
   */
  startJSCoverage(options?: {
    /**
     * Whether anonymous scripts generated by the page should be reported. Defaults to `false`.
     */
    reportAnonymousScripts?: boolean;

    /**
     * Whether to reset coverage on every navigation. Defaults to `true`.
     */
    resetOnNavigation?: boolean;
  }): Promise<void>;

  /**
   * Returns the array of coverage reports for all stylesheets
   * 
   * > **NOTE** CSS Coverage doesn't include dynamically injected style tags without sourceURLs.
   */
  stopCSSCoverage(): Promise<Array<{
    /**
     * StyleSheet URL
     */
    url: string;

    /**
     * StyleSheet content, if available.
     */
    text?: string;

    /**
     * StyleSheet ranges that were used. Ranges are sorted and non-overlapping.
     */
    ranges: Array<{
      /**
       * A start offset in text, inclusive
       */
      start: number;

      /**
       * An end offset in text, exclusive
       */
      end: number;
    }>;
  }>>;

  /**
   * Returns the array of coverage reports for all scripts
   * 
   * > **NOTE** JavaScript Coverage doesn't include anonymous scripts by default. However, scripts with sourceURLs are reported.
   */
  stopJSCoverage(): Promise<Array<{
    /**
     * Script URL
     */
    url: string;

    /**
     * Script ID
     */
    scriptId: string;

    /**
     * Script content, if applicable.
     */
    source?: string;

    /**
     * V8-specific coverage format.
     */
    functions: Array<{
      functionName: string;

      isBlockCoverage: boolean;

      ranges: Array<{
        count: number;

        startOffset: number;

        endOffset: number;
      }>;
    }>;
  }>>;
}

/**
 * Firefox browser instance does not expose Firefox-specific features.
 */
export interface FirefoxBrowser extends Browser {

}

/**
 * WebKit browser instance does not expose WebKit-specific features.
 */
export interface WebKitBrowser extends Browser {

}

export interface BrowserContextOptions {
  /**
   * Whether to automatically download all the attachments. Defaults to `false` where all the downloads are canceled.
   */
  acceptDownloads?: boolean;

  /**
   * Toggles bypassing page's Content-Security-Policy.
   */
  bypassCSP?: boolean;

  /**
   * Emulates `'prefers-colors-scheme'` media feature, supported values are `'light'`, `'dark'`, `'no-preference'`. See `page.emulateMedia(params)` for more details. Defaults to '`light`'.
   */
  colorScheme?: "dark"|"light"|"no-preference";

  /**
   * Specify device scale factor (can be thought of as dpr). Defaults to `1`.
   */
  deviceScaleFactor?: number;

  /**
   * An object containing additional HTTP headers to be sent with every request. All header values must be strings.
   */
  extraHTTPHeaders?: { [key: string]: string; };

  geolocation?: Geolocation;

  /**
   * Specifies if viewport supports touch events. Defaults to false.
   */
  hasTouch?: boolean;

  /**
   * Credentials for HTTP authentication.
   */
  httpCredentials?: HTTPCredentials;

  /**
   * Whether to ignore HTTPS errors during navigation. Defaults to `false`.
   */
  ignoreHTTPSErrors?: boolean;

  /**
   * Whether the `meta viewport` tag is taken into account and touch events are enabled. Defaults to `false`. Not supported in Firefox.
   */
  isMobile?: boolean;

  /**
   * Whether or not to enable JavaScript in the context. Defaults to `true`.
   */
  javaScriptEnabled?: boolean;

  /**
   * Specify user locale, for example `en-GB`, `de-DE`, etc. Locale will affect `navigator.language` value, `Accept-Language` request header value as well as number and date formatting rules.
   */
  locale?: string;

  /**
   * Logger sink for Playwright logging.
   */
  logger?: Logger;

  /**
   * Whether to emulate network being offline. Defaults to `false`.
   */
  offline?: boolean;

  /**
   * A list of permissions to grant to all pages in this context. See `browserContext.grantPermissions(permissions[, options])` for more details.
   */
  permissions?: Array<string>;

  /**
   * Network proxy settings to use with this context. Note that browser needs to be launched with the global proxy for this option to work. If all contexts override the proxy, global proxy will be never used and can be any string, for example `launch({ proxy: { server: 'per-context' } })`.
   */
  proxy?: {
    /**
     * Proxy to be used for all requests. HTTP and SOCKS proxies are supported, for example `http://myproxy.com:3128` or `socks5://myproxy.com:3128`. Short form `myproxy.com:3128` is considered an HTTP proxy.
     */
    server: string;

    /**
     * Optional coma-separated domains to bypass proxy, for example `".com, chromium.org, .domain.com"`.
     */
    bypass?: string;

    /**
     * Optional username to use if HTTP proxy requires authentication.
     */
    username?: string;

    /**
     * Optional password to use if HTTP proxy requires authentication.
     */
    password?: string;
  };

  /**
   * Enables HAR recording for all pages into `recordHar.path` file. If not specified, the HAR is not recorded. Make sure to await `browserContext.close()` for the HAR to be saved.
   */
  recordHar?: {
    /**
     * Optional setting to control whether to omit request content from the HAR. Defaults to `false`.
     */
    omitContent?: boolean;

    /**
     * Path on the filesystem to write the HAR file to.
     */
    path: string;
  };

  /**
   * Enables video recording for all pages into `recordVideo.dir` directory. If not specified videos are not recorded. Make sure to await `browserContext.close()` for videos to be saved.
   */
  recordVideo?: {
    /**
     * Path to the directory to put videos into.
     */
    dir: string;

    /**
     * Optional dimensions of the recorded videos. If not specified the size will be equal to `viewport`. If `viewport` is not configured explicitly the video size defaults to 1280x720. Actual picture of each page will be scaled down if necessary to fit the specified size.
     */
    size?: {
      /**
       * Video frame width.
       */
      width: number;

      /**
       * Video frame height.
       */
      height: number;
    };
  };

  /**
   * Populates context with given storage state. This method can be used to initialize context with logged-in information obtained via `browserContext.storageState([options])`. Either a path to the file with saved storage, or an object with the following fields:
   */
  storageState?: string|{
    /**
     * Optional cookies to set for context
     */
    cookies?: Array<{
      /**
       * **required**
       */
      name: string;

      /**
       * **required**
       */
      value: string;

      /**
       * Optional either url or domain / path are required
       */
      url?: string;

      /**
       * Optional either url or domain / path are required
       */
      domain?: string;

      /**
       * Optional either url or domain / path are required
       */
      path?: string;

      /**
       * Optional Unix time in seconds.
       */
      expires?: number;

      /**
       * Optional httpOnly flag
       */
      httpOnly?: boolean;

      /**
       * Optional secure flag
       */
      secure?: boolean;

      /**
       * Optional sameSite flag
       */
      sameSite?: "Lax"|"None"|"Strict";
    }>;

    /**
     * Optional localStorage to set for context
     */
    origins?: Array<{
      origin: string;

      localStorage: Array<{
        name: string;

        value: string;
      }>;
    }>;
  };

  /**
   * Changes the timezone of the context. See ICU’s `metaZones.txt` for a list of supported timezone IDs.
   */
  timezoneId?: string;

  /**
   * Specific user agent to use in this context.
   */
  userAgent?: string;

  /**
   * **NOTE** Use `recordVideo` instead, it takes precedence over `videoSize`. Specifies dimensions of the automatically recorded video. Can only be used if `videosPath` is set. If not specified the size will be equal to `viewport`. If `viewport` is not configured explicitly the video size defaults to 1280x720. Actual picture of the page will be scaled down if necessary to fit specified size.
   */
  videoSize?: {
    /**
     * Video frame width.
     */
    width: number;

    /**
     * Video frame height.
     */
    height: number;
  };

  /**
   * **NOTE** Use `recordVideo` instead, it takes precedence over `videosPath`. Enables video recording for all pages to `videosPath` directory. If not specified, videos are not recorded. Make sure to await `browserContext.close()` for videos to be saved.
   */
  videosPath?: string;

  /**
   * Sets a consistent viewport for each page. Defaults to an 1280x720 viewport. `null` disables the default viewport.
   */
  viewport?: null|ViewportSize;
}

export interface ViewportSize {
  /**
   * page width in pixels.
   */
  width: number;

  /**
   * page height in pixels.
   */
  height: number;
}

export interface HTTPCredentials {
  username: string;

  password: string;
}

export interface Geolocation {
  /**
   * Latitude between -90 and 90.
   */
  latitude: number;

  /**
   * Longitude between -180 and 180.
   */
  longitude: number;

  /**
   * Non-negative accuracy value. Defaults to `0`.
   */
  accuracy?: number;
}

export interface LaunchOptions {
  /**
   * Additional arguments to pass to the browser instance. The list of Chromium flags can be found here.
   */
  args?: Array<string>;

  /**
   * Enable Chromium sandboxing. Defaults to `false`.
   */
  chromiumSandbox?: boolean;

  /**
   * **Chromium-only** Whether to auto-open a Developer Tools panel for each tab. If this option is `true`, the `headless` option will be set `false`.
   */
  devtools?: boolean;

  /**
   * If specified, accepted downloads are downloaded into this directory. Otherwise, temporary directory is created and is deleted when browser is closed.
   */
  downloadsPath?: string;

  /**
   * Specify environment variables that will be visible to the browser. Defaults to `process.env`.
   */
  env?: { [key: string]: string|number|boolean; };

  /**
   * Path to a browser executable to run instead of the bundled one. If `executablePath` is a relative path, then it is resolved relative to the current working directory. Note that Playwright only works with the bundled Chromium, Firefox or WebKit, use at your own risk.
   */
  executablePath?: string;

  /**
   * Firefox user preferences. Learn more about the Firefox user preferences at `about:config`.
   */
  firefoxUserPrefs?: { [key: string]: string|number|boolean; };

  /**
   * Close the browser process on SIGHUP. Defaults to `true`.
   */
  handleSIGHUP?: boolean;

  /**
   * Close the browser process on Ctrl-C. Defaults to `true`.
   */
  handleSIGINT?: boolean;

  /**
   * Close the browser process on SIGTERM. Defaults to `true`.
   */
  handleSIGTERM?: boolean;

  /**
   * Whether to run browser in headless mode. More details for Chromium and Firefox. Defaults to `true` unless the `devtools` option is `true`.
   */
  headless?: boolean;

  /**
   * If `true`, Playwright does not pass its own configurations args and only uses the ones from `args`. If an array is given, then filters out the given default arguments. Dangerous option; use with care. Defaults to `false`.
   */
  ignoreDefaultArgs?: boolean|Array<string>;

  /**
   * Logger sink for Playwright logging.
   */
  logger?: Logger;

  /**
   * Network proxy settings.
   */
  proxy?: {
    /**
     * Proxy to be used for all requests. HTTP and SOCKS proxies are supported, for example `http://myproxy.com:3128` or `socks5://myproxy.com:3128`. Short form `myproxy.com:3128` is considered an HTTP proxy.
     */
    server: string;

    /**
     * Optional coma-separated domains to bypass proxy, for example `".com, chromium.org, .domain.com"`.
     */
    bypass?: string;

    /**
     * Optional username to use if HTTP proxy requires authentication.
     */
    username?: string;

    /**
     * Optional password to use if HTTP proxy requires authentication.
     */
    password?: string;
  };

  /**
   * Slows down Playwright operations by the specified amount of milliseconds. Useful so that you can see what is going on.
   */
  slowMo?: number;

  /**
   * Maximum time in milliseconds to wait for the browser instance to start. Defaults to `30000` (30 seconds). Pass `0` to disable timeout.
   */
  timeout?: number;
}

export interface ConnectOptions {
  /**
   * A browser websocket endpoint to connect to. **required**
   */
  wsEndpoint: string;

  /**
   * Slows down Playwright operations by the specified amount of milliseconds. Useful so that you can see what is going on. Defaults to 0.
   */
  slowMo?: number;

  /**
   * Logger sink for Playwright logging.
   */
  logger?: Logger;

  /**
   * Maximum time in milliseconds to wait for the connection to be established. Defaults to `30000` (30 seconds). Pass `0` to disable timeout.
   */
  timeout?: number;
}

interface ElementHandleWaitForSelectorOptions {
  /**
   * Defaults to `'visible'`. Can be either:
   * - `'attached'` - wait for element to be present in DOM.
   * - `'detached'` - wait for element to not be present in DOM.
   * - `'visible'` - wait for element to have non-empty bounding box and no `visibility:hidden`. Note that element without any content or with `display:none` has an empty bounding box and is not considered visible.
   * - `'hidden'` - wait for element to be either detached from DOM, or have an empty bounding box or `visibility:hidden`. This is opposite to the `'visible'` option.
   */
  state?: "attached"|"detached"|"hidden"|"visible";

  /**
   * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
   */
  timeout?: number;
}

export interface Cookie {
  name: string;

  value: string;

  domain: string;

  path: string;

  /**
   * Unix time in seconds.
   */
  expires: number;

  httpOnly: boolean;

  secure: boolean;

  sameSite: "Lax"|"None"|"Strict";
}

interface PageWaitForSelectorOptions {
  /**
   * Defaults to `'visible'`. Can be either:
   * - `'attached'` - wait for element to be present in DOM.
   * - `'detached'` - wait for element to not be present in DOM.
   * - `'visible'` - wait for element to have non-empty bounding box and no `visibility:hidden`. Note that element without any content or with `display:none` has an empty bounding box and is not considered visible.
   * - `'hidden'` - wait for element to be either detached from DOM, or have an empty bounding box or `visibility:hidden`. This is opposite to the `'visible'` option.
   */
  state?: "attached"|"detached"|"hidden"|"visible";

  /**
   * Maximum time in milliseconds, defaults to 30 seconds, pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)` or `page.setDefaultTimeout(timeout)` methods.
   */
  timeout?: number;
}

interface PageWaitForFunctionOptions {
  /**
   * If `polling` is `'raf'`, then `pageFunction` is constantly executed in `requestAnimationFrame` callback. If `polling` is a number, then it is treated as an interval in milliseconds at which the function would be executed. Defaults to `raf`.
   */
  polling?: number|"raf";

  /**
   * maximum time to wait for in milliseconds. Defaults to `30000` (30 seconds). Pass `0` to disable timeout. The default value can be changed by using the `browserContext.setDefaultTimeout(timeout)`.
   */
  timeout?: number;
}

type Devices = {
  "Blackberry PlayBook": DeviceDescriptor;
  "Blackberry PlayBook landscape": DeviceDescriptor;
  "BlackBerry Z30": DeviceDescriptor;
  "BlackBerry Z30 landscape": DeviceDescriptor;
  "Galaxy Note 3": DeviceDescriptor;
  "Galaxy Note 3 landscape": DeviceDescriptor;
  "Galaxy Note II": DeviceDescriptor;
  "Galaxy Note II landscape": DeviceDescriptor;
  "Galaxy S III": DeviceDescriptor;
  "Galaxy S III landscape": DeviceDescriptor;
  "Galaxy S5": DeviceDescriptor;
  "Galaxy S5 landscape": DeviceDescriptor;
  "iPad (gen 6)": DeviceDescriptor;
  "iPad (gen 6) landscape": DeviceDescriptor;
  "iPad (gen 7)": DeviceDescriptor;
  "iPad (gen 7) landscape": DeviceDescriptor;
  "iPad Mini": DeviceDescriptor;
  "iPad Mini landscape": DeviceDescriptor;
  "iPad Pro 11": DeviceDescriptor;
  "iPad Pro 11 landscape": DeviceDescriptor;
  "iPhone 6": DeviceDescriptor;
  "iPhone 6 landscape": DeviceDescriptor;
  "iPhone 6 Plus": DeviceDescriptor;
  "iPhone 6 Plus landscape": DeviceDescriptor;
  "iPhone 7": DeviceDescriptor;
  "iPhone 7 landscape": DeviceDescriptor;
  "iPhone 7 Plus": DeviceDescriptor;
  "iPhone 7 Plus landscape": DeviceDescriptor;
  "iPhone 8": DeviceDescriptor;
  "iPhone 8 landscape": DeviceDescriptor;
  "iPhone 8 Plus": DeviceDescriptor;
  "iPhone 8 Plus landscape": DeviceDescriptor;
  "iPhone SE": DeviceDescriptor;
  "iPhone SE landscape": DeviceDescriptor;
  "iPhone X": DeviceDescriptor;
  "iPhone X landscape": DeviceDescriptor;
  "iPhone XR": DeviceDescriptor;
  "iPhone XR landscape": DeviceDescriptor;
  "iPhone 11": DeviceDescriptor;
  "iPhone 11 landscape": DeviceDescriptor;
  "iPhone 11 Pro": DeviceDescriptor;
  "iPhone 11 Pro landscape": DeviceDescriptor;
  "iPhone 11 Pro Max": DeviceDescriptor;
  "iPhone 11 Pro Max landscape": DeviceDescriptor;
  "JioPhone 2": DeviceDescriptor;
  "JioPhone 2 landscape": DeviceDescriptor;
  "Kindle Fire HDX": DeviceDescriptor;
  "Kindle Fire HDX landscape": DeviceDescriptor;
  "LG Optimus L70": DeviceDescriptor;
  "LG Optimus L70 landscape": DeviceDescriptor;
  "Microsoft Lumia 550": DeviceDescriptor;
  "Microsoft Lumia 550 landscape": DeviceDescriptor;
  "Microsoft Lumia 950": DeviceDescriptor;
  "Microsoft Lumia 950 landscape": DeviceDescriptor;
  "Nexus 10": DeviceDescriptor;
  "Nexus 10 landscape": DeviceDescriptor;
  "Nexus 4": DeviceDescriptor;
  "Nexus 4 landscape": DeviceDescriptor;
  "Nexus 5": DeviceDescriptor;
  "Nexus 5 landscape": DeviceDescriptor;
  "Nexus 5X": DeviceDescriptor;
  "Nexus 5X landscape": DeviceDescriptor;
  "Nexus 6": DeviceDescriptor;
  "Nexus 6 landscape": DeviceDescriptor;
  "Nexus 6P": DeviceDescriptor;
  "Nexus 6P landscape": DeviceDescriptor;
  "Nexus 7": DeviceDescriptor;
  "Nexus 7 landscape": DeviceDescriptor;
  "Nokia Lumia 520": DeviceDescriptor;
  "Nokia Lumia 520 landscape": DeviceDescriptor;
  "Nokia N9": DeviceDescriptor;
  "Nokia N9 landscape": DeviceDescriptor;
  "Pixel 2": DeviceDescriptor;
  "Pixel 2 landscape": DeviceDescriptor;
  "Pixel 2 XL": DeviceDescriptor;
  "Pixel 2 XL landscape": DeviceDescriptor;
  [key: string]: DeviceDescriptor;
}