puppeteer/packages/puppeteer-core/src/api/Browser.ts

/**
 * Copyright 2017 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/* eslint-disable @typescript-eslint/no-unused-vars */

import {ChildProcess} from 'child_process';

import {Protocol} from 'devtools-protocol';

import {EventEmitter} from '../common/EventEmitter.js';
import {waitWithTimeout} from '../common/util.js';
import {Deferred} from '../util/Deferred.js';

import type {BrowserContext} from './BrowserContext.js';
import type {Page} from './Page.js';
import type {Target} from './Target.js';

/**
 * BrowserContext options.
 *
 * @public
 */
export interface BrowserContextOptions {
  /**
   * Proxy server with optional port to use for all requests.
   * Username and password can be set in `Page.authenticate`.
   */
  proxyServer?: string;
  /**
   * Bypass the proxy for the given list of hosts.
   */
  proxyBypassList?: string[];
}

/**
 * @internal
 */
export type BrowserCloseCallback = () => Promise<void> | void;

/**
 * @public
 */
export type TargetFilterCallback = (target: Target) => boolean;

/**
 * @internal
 */
export type IsPageTargetCallback = (target: Target) => boolean;

/**
 * @internal
 */
export const WEB_PERMISSION_TO_PROTOCOL_PERMISSION = new Map<
  Permission,
  Protocol.Browser.PermissionType
>([
  ['geolocation', 'geolocation'],
  ['midi', 'midi'],
  ['notifications', 'notifications'],
  // TODO: push isn't a valid type?
  // ['push', 'push'],
  ['camera', 'videoCapture'],
  ['microphone', 'audioCapture'],
  ['background-sync', 'backgroundSync'],
  ['ambient-light-sensor', 'sensors'],
  ['accelerometer', 'sensors'],
  ['gyroscope', 'sensors'],
  ['magnetometer', 'sensors'],
  ['accessibility-events', 'accessibilityEvents'],
  ['clipboard-read', 'clipboardReadWrite'],
  ['clipboard-write', 'clipboardReadWrite'],
  ['clipboard-sanitized-write', 'clipboardSanitizedWrite'],
  ['payment-handler', 'paymentHandler'],
  ['persistent-storage', 'durableStorage'],
  ['idle-detection', 'idleDetection'],
  // chrome-specific permissions we have.
  ['midi-sysex', 'midiSysex'],
]);

/**
 * @public
 */
export type Permission =
  | 'geolocation'
  | 'midi'
  | 'notifications'
  | 'camera'
  | 'microphone'
  | 'background-sync'
  | 'ambient-light-sensor'
  | 'accelerometer'
  | 'gyroscope'
  | 'magnetometer'
  | 'accessibility-events'
  | 'clipboard-read'
  | 'clipboard-write'
  | 'clipboard-sanitized-write'
  | 'payment-handler'
  | 'persistent-storage'
  | 'idle-detection'
  | 'midi-sysex';

/**
 * @public
 */
export interface WaitForTargetOptions {
  /**
   * Maximum wait time in milliseconds. Pass `0` to disable the timeout.
   * @defaultValue `30_000`
   */
  timeout?: number;
}

/**
 * All the events a {@link Browser | browser instance} may emit.
 *
 * @public
 */
export const enum BrowserEmittedEvents {
  /**
   * Emitted when Puppeteer gets disconnected from the browser instance. This
   * might happen because of one of the following:
   *
   * - browser is closed or crashed
   *
   * - The {@link Browser.disconnect | browser.disconnect } method was called.
   */
  Disconnected = 'disconnected',

  /**
   * Emitted when the url of a target changes. Contains a {@link Target} instance.
   *
   * @remarks
   *
   * Note that this includes target changes in incognito browser contexts.
   */
  TargetChanged = 'targetchanged',

  /**
   * Emitted when a target is created, for example when a new page is opened by
   * {@link https://developer.mozilla.org/en-US/docs/Web/API/Window/open | window.open}
   * or by {@link Browser.newPage | browser.newPage}
   *
   * Contains a {@link Target} instance.
   *
   * @remarks
   *
   * Note that this includes target creations in incognito browser contexts.
   */
  TargetCreated = 'targetcreated',
  /**
   * Emitted when a target is destroyed, for example when a page is closed.
   * Contains a {@link Target} instance.
   *
   * @remarks
   *
   * Note that this includes target destructions in incognito browser contexts.
   */
  TargetDestroyed = 'targetdestroyed',
}

/**
 * A Browser is created when Puppeteer connects to a browser instance, either through
 * {@link PuppeteerNode.launch} or {@link Puppeteer.connect}.
 *
 * @remarks
 *
 * The Browser class extends from Puppeteer's {@link EventEmitter} class and will
 * emit various events which are documented in the {@link BrowserEmittedEvents} enum.
 *
 * @example
 * An example of using a {@link Browser} to create a {@link Page}:
 *
 * ```ts
 * import puppeteer from 'puppeteer';
 *
 * (async () => {
 *   const browser = await puppeteer.launch();
 *   const page = await browser.newPage();
 *   await page.goto('https://example.com');
 *   await browser.close();
 * })();
 * ```
 *
 * @example
 * An example of disconnecting from and reconnecting to a {@link Browser}:
 *
 * ```ts
 * import puppeteer from 'puppeteer';
 *
 * (async () => {
 *   const browser = await puppeteer.launch();
 *   // Store the endpoint to be able to reconnect to the browser.
 *   const browserWSEndpoint = browser.wsEndpoint();
 *   // Disconnect puppeteer from the browser.
 *   browser.disconnect();
 *
 *   // Use the endpoint to reestablish a connection
 *   const browser2 = await puppeteer.connect({browserWSEndpoint});
 *   // Close the browser.
 *   await browser2.close();
 * })();
 * ```
 *
 * @public
 */
export class Browser extends EventEmitter {
  /**
   * @internal
   */
  constructor() {
    super();
  }

  /**
   * @internal
   */
  _attach(): Promise<void> {
    throw new Error('Not implemented');
  }

  /**
   * @internal
   */
  _detach(): void {
    throw new Error('Not implemented');
  }

  /**
   * @internal
   */
  get _targets(): Map<string, Target> {
    throw new Error('Not implemented');
  }

  /**
   * The spawned browser process. Returns `null` if the browser instance was created with
   * {@link Puppeteer.connect}.
   */
  process(): ChildProcess | null {
    throw new Error('Not implemented');
  }

  /**
   * @internal
   */
  _getIsPageTargetCallback(): IsPageTargetCallback | undefined {
    throw new Error('Not implemented');
  }

  /**
   * Creates a new incognito browser context. This won't share cookies/cache with other
   * browser contexts.
   *
   * @example
   *
   * ```ts
   * (async () => {
   *   const browser = await puppeteer.launch();
   *   // Create a new incognito browser context.
   *   const context = await browser.createIncognitoBrowserContext();
   *   // Create a new page in a pristine context.
   *   const page = await context.newPage();
   *   // Do stuff
   *   await page.goto('https://example.com');
   * })();
   * ```
   */
  createIncognitoBrowserContext(
    options?: BrowserContextOptions
  ): Promise<BrowserContext>;
  createIncognitoBrowserContext(): Promise<BrowserContext> {
    throw new Error('Not implemented');
  }

  /**
   * Returns an array of all open browser contexts. In a newly created browser, this will
   * return a single instance of {@link BrowserContext}.
   */
  browserContexts(): BrowserContext[] {
    throw new Error('Not implemented');
  }

  /**
   * Returns the default browser context. The default browser context cannot be closed.
   */
  defaultBrowserContext(): BrowserContext {
    throw new Error('Not implemented');
  }

  /**
   * @internal
   */
  _disposeContext(contextId?: string): Promise<void>;
  _disposeContext(): Promise<void> {
    throw new Error('Not implemented');
  }

  /**
   * The browser websocket endpoint which can be used as an argument to
   * {@link Puppeteer.connect}.
   *
   * @returns The Browser websocket url.
   *
   * @remarks
   *
   * The format is `ws://${host}:${port}/devtools/browser/<id>`.
   *
   * You can find the `webSocketDebuggerUrl` from `http://${host}:${port}/json/version`.
   * Learn more about the
   * {@link https://chromedevtools.github.io/devtools-protocol | devtools protocol} and
   * the {@link
   * https://chromedevtools.github.io/devtools-protocol/#how-do-i-access-the-browser-target
   * | browser endpoint}.
   */
  wsEndpoint(): string {
    throw new Error('Not implemented');
  }

  /**
   * Promise which resolves to a new {@link Page} object. The Page is created in
   * a default browser context.
   */
  newPage(): Promise<Page> {
    throw new Error('Not implemented');
  }

  /**
   * @internal
   */
  _createPageInContext(contextId?: string): Promise<Page>;
  _createPageInContext(): Promise<Page> {
    throw new Error('Not implemented');
  }

  /**
   * All active targets inside the Browser. In case of multiple browser contexts, returns
   * an array with all the targets in all browser contexts.
   */
  targets(): Target[] {
    throw new Error('Not implemented');
  }

  /**
   * The target associated with the browser.
   */
  target(): Target {
    throw new Error('Not implemented');
  }

  /**
   * Searches for a target in all browser contexts.
   *
   * @param predicate - A function to be run for every target.
   * @returns The first target found that matches the `predicate` function.
   *
   * @example
   *
   * An example of finding a target for a page opened via `window.open`:
   *
   * ```ts
   * await page.evaluate(() => window.open('https://www.example.com/'));
   * const newWindowTarget = await browser.waitForTarget(
   *   target => target.url() === 'https://www.example.com/'
   * );
   * ```
   */
  async waitForTarget(
    predicate: (x: Target) => boolean | Promise<boolean>,
    options: WaitForTargetOptions = {}
  ): Promise<Target> {
    const {timeout = 30000} = options;
    const targetDeferred = Deferred.create<Target | PromiseLike<Target>>();

    this.on(BrowserEmittedEvents.TargetCreated, check);
    this.on(BrowserEmittedEvents.TargetChanged, check);
    try {
      this.targets().forEach(check);
      if (!timeout) {
        return await targetDeferred.valueOrThrow();
      }
      return await waitWithTimeout(
        targetDeferred.valueOrThrow(),
        'target',
        timeout
      );
    } finally {
      this.off(BrowserEmittedEvents.TargetCreated, check);
      this.off(BrowserEmittedEvents.TargetChanged, check);
    }

    async function check(target: Target): Promise<void> {
      if ((await predicate(target)) && !targetDeferred.resolved()) {
        targetDeferred.resolve(target);
      }
    }
  }

  /**
   * An array of all open pages inside the Browser.
   *
   * @remarks
   *
   * In case of multiple browser contexts, returns an array with all the pages in all
   * browser contexts. Non-visible pages, such as `"background_page"`, will not be listed
   * here. You can find them using {@link Target.page}.
   */
  async pages(): Promise<Page[]> {
    const contextPages = await Promise.all(
      this.browserContexts().map(context => {
        return context.pages();
      })
    );
    // Flatten array.
    return contextPages.reduce((acc, x) => {
      return acc.concat(x);
    }, []);
  }

  /**
   * A string representing the browser name and version.
   *
   * @remarks
   *
   * For headless browser, this is similar to `HeadlessChrome/61.0.3153.0`. For
   * non-headless or new-headless, this is similar to `Chrome/61.0.3153.0`. For
   * Firefox, it is similar to `Firefox/116.0a1`.
   *
   * The format of browser.version() might change with future releases of
   * browsers.
   */
  version(): Promise<string> {
    throw new Error('Not implemented');
  }

  /**
   * The browser's original user agent. Pages can override the browser user agent with
   * {@link Page.setUserAgent}.
   */
  userAgent(): Promise<string> {
    throw new Error('Not implemented');
  }

  /**
   * Closes the browser and all of its pages (if any were opened). The
   * {@link Browser} object itself is considered to be disposed and cannot be
   * used anymore.
   */
  close(): Promise<void> {
    throw new Error('Not implemented');
  }

  /**
   * Disconnects Puppeteer from the browser, but leaves the browser process running.
   * After calling `disconnect`, the {@link Browser} object is considered disposed and
   * cannot be used anymore.
   */
  disconnect(): void {
    throw new Error('Not implemented');
  }

  /**
   * Indicates that the browser is connected.
   */
  isConnected(): boolean {
    throw new Error('Not implemented');
  }
}
/**
 * @public
 */
export const enum BrowserContextEmittedEvents {
  /**
   * Emitted when the url of a target inside the browser context changes.
   * Contains a {@link Target} instance.
   */
  TargetChanged = 'targetchanged',

  /**
   * Emitted when a target is created within the browser context, for example
   * when a new page is opened by
   * {@link https://developer.mozilla.org/en-US/docs/Web/API/Window/open | window.open}
   * or by {@link BrowserContext.newPage | browserContext.newPage}
   *
   * Contains a {@link Target} instance.
   */
  TargetCreated = 'targetcreated',
  /**
   * Emitted when a target is destroyed within the browser context, for example
   * when a page is closed. Contains a {@link Target} instance.
   */
  TargetDestroyed = 'targetdestroyed',
}