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/** * Copyright 2019 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. */import { Page } from "./Page.js";import { WebWorker } from "./WebWorker.js";import { CDPSession } from "./Connection.js";import { Browser, BrowserContext, IsPageTargetCallback } from "./Browser.js";import { Viewport } from "./PuppeteerViewport.js";import { Protocol } from "../../vendor/devtools-protocol/types/protocol.d.ts";import { TaskQueue } from "./TaskQueue.js";import { TargetManager } from "./TargetManager.js";/** * @public */export declare class Target {  #private;  /**   * @internal   */  _initializedPromise: Promise<boolean>;  /**   * @internal   */  _initializedCallback: (x: boolean) => void;  /**   * @internal   */  _isClosedPromise: Promise<void>;  /**   * @internal   */  _closedCallback: () => void;  /**   * @internal   */  _isInitialized: boolean;  /**   * @internal   */  _targetId: string;  /**   * @internal   */  _isPageTargetCallback: IsPageTargetCallback;  /**   * @internal   */  constructor(    targetInfo: Protocol.Target.TargetInfo,    session: CDPSession | undefined,    browserContext: BrowserContext,    targetManager: TargetManager,    sessionFactory: (isAutoAttachEmulated: boolean) => Promise<CDPSession>,    ignoreHTTPSErrors: boolean,    defaultViewport: Viewport | null,    screenshotTaskQueue: TaskQueue,    isPageTargetCallback: IsPageTargetCallback,  );  /**   * @internal   */  _session(): CDPSession | undefined;  /**   * Creates a Chrome Devtools Protocol session attached to the target.   */  createCDPSession(): Promise<CDPSession>;  /**   * @internal   */  _targetManager(): TargetManager;  /**   * @internal   */  _getTargetInfo(): Protocol.Target.TargetInfo;  /**   * If the target is not of type `"page"` or `"background_page"`, returns `null`.   */  page(): Promise<Page | null>;  /**   * If the target is not of type `"service_worker"` or `"shared_worker"`, returns `null`.   */  worker(): Promise<WebWorker | null>;  url(): string;  /**   * Identifies what kind of target this is.   *   * @remarks   *   * See {@link https://developer.chrome.com/extensions/background_pages | docs} for more info about background pages.   */  type():    | "page"    | "background_page"    | "service_worker"    | "shared_worker"    | "other"    | "browser"    | "webview";  /**   * Get the browser the target belongs to.   */  browser(): Browser;  /**   * Get the browser context the target belongs to.   */  browserContext(): BrowserContext;  /**   * Get the target that opened this target. Top-level targets return `null`.   */  opener(): Target | undefined;  /**   * @internal   */  _targetInfoChanged(targetInfo: Protocol.Target.TargetInfo): void;}