/*
 * Copyright (c) 2021 Huawei Device Co., Ltd.
 * 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.
 */

/**
 * @file
 * @kit ArkUI
 */

import { Callback } from './@ohos.base';
import { AsyncCallback } from './@ohos.base';

/**
 * @namespace router
 * @syscap SystemCapability.ArkUI.ArkUI.Full
 * @since 8
 */
/**
 * @namespace router
 * @syscap SystemCapability.ArkUI.ArkUI.Full
 * @crossplatform
 * @since 10
 */
/**
 * @namespace router
 * @syscap SystemCapability.ArkUI.ArkUI.Full
 * @crossplatform
 * @atomicservice
 * @since 11
 */
declare namespace router {
  /**
   * Router Mode
   *
   * @enum { number }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 9
   */
  /**
   * Router Mode
   *
   * @enum { number }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Router Mode
   *
   * @enum { number }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  export enum RouterMode {
    /**
     * Default route mode.
     * The page will be added to the top of the page stack.
     *
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @since 9
     */
    /**
     * Default route mode.
     * The page will be added to the top of the page stack.
     *
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @since 10
     */
    /**
     * Default route mode.
     * The page will be added to the top of the page stack.
     *
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @atomicservice
     * @since 11
     */
    Standard,

    /**
     * Single route mode.
     * If the target page already has the same url page in the page stack,
     * the same url page closest to the top of the stack will be moved to the top of the stack.
     * If the target page url does not exist in the page stack, route will use default route mode.
     *
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @since 9
     */
    /**
     * Single route mode.
     * If the target page already has the same url page in the page stack,
     * the same url page closest to the top of the stack will be moved to the top of the stack.
     * If the target page url does not exist in the page stack, route will use default route mode.
     *
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @since 10
     */
    /**
     * Single route mode.
     * If the target page already has the same url page in the page stack,
     * the same url page closest to the top of the stack will be moved to the top of the stack.
     * If the target page url does not exist in the page stack, route will use default route mode.
     *
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @atomicservice
     * @since 11
     */
    Single,
  }

  /**
   * @typedef RouterOptions
   * @syscap SystemCapability.ArkUI.ArkUI.Lite
   * @since 8
   */
  /**
   * @typedef RouterOptions
   * @syscap SystemCapability.ArkUI.ArkUI.Lite
   * @atomicservice
   * @since 11
   */
  interface RouterOptions {
    /**
     * URI of the destination page, which supports the following formats:
     * 1. Absolute path of the page, which is provided by the pages list in the config.json file.
     *    Example:
     *      pages/index/index
     *      pages/detail/detail
     * 2. Particular path. If the URI is a slash (/), the home page is displayed.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Lite
     * @since 8
     */
    /**
     * URI of the destination page, which supports the following formats:
     * 1. Absolute path of the page, which is provided by the pages list in the config.json file.
     *    Example:
     *      pages/index/index
     *      pages/detail/detail
     * 2. Particular path. If the URI is a slash (/), the home page is displayed.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Lite
     * @atomicservice
     * @since 11
     */
    url: string;

    /**
     * Data that needs to be passed to the destination page during navigation.
     * After the destination page is displayed, the parameter can be directly used for the page.
     * For example, this.data1 (data1 is the key value of the params used for page navigation.)
     *
     * @type { ?Object }
     * @syscap SystemCapability.ArkUI.ArkUI.Lite
     * @since 8
     */
    /**
     * Data that needs to be passed to the destination page during navigation.
     * After the destination page is displayed, the parameter can be directly used for the page.
     * For example, this.data1 (data1 is the key value of the params used for page navigation.)
     *
     * @type { ?Object }
     * @syscap SystemCapability.ArkUI.ArkUI.Lite
     * @atomicservice
     * @since 11
     */
    params?: Object;
  }

  /**
   * @typedef RouterState
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   */
  /**
   * @typedef RouterState
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * @typedef RouterState
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  interface RouterState {
    /**
     * Index of the current page in the stack.
     * NOTE: The index starts from 1 from the bottom to the top of the stack.
     *
     * @type { number }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @since 8
     */
    /**
     * Index of the current page in the stack.
     * NOTE: The index starts from 1 from the bottom to the top of the stack.
     *
     * @type { number }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @since 10
     */
    /**
     * Index of the current page in the stack.
     * NOTE: The index starts from 1 from the bottom to the top of the stack.
     *
     * @type { number }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @atomicservice
     * @since 11
     */
    index: number;

    /**
     * Name of the current page, that is, the file name.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @since 8
     */
    /**
     * Name of the current page, that is, the file name.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @since 10
     */
    /**
     * Name of the current page, that is, the file name.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @atomicservice
     * @since 11
     */
    name: string;

    /**
     * Path of the current page.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @since 8
     */
    /**
     * Path of the current page.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @since 10
     */
    /**
     * Path of the current page.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @atomicservice
     * @since 11
     */
    path: string;
    
    /**
     * Data that passed to the destination page during navigation.
     *
     * @type { Object }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @since 12
     */
    params: Object;
  }

  /**
   * @typedef EnableAlertOptions
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   */
  /**
   * @typedef EnableAlertOptions
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * @typedef EnableAlertOptions
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  interface EnableAlertOptions {
    /**
     * dialog context.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @since 8
     */
    /**
     * dialog context.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @since 10
     */
    /**
     * dialog context.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @atomicservice
     * @since 11
     */
    message: string;
  }

  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   * @deprecated since 9
   * @useinstead ohos.router.router#pushUrl
   */
  function push(options: RouterOptions): void;

  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @param { AsyncCallback<void> } callback - the callback of pushUrl.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 9
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @param { AsyncCallback<void> } callback - the callback of pushUrl.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @param { AsyncCallback<void> } callback - the callback of pushUrl.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function pushUrl(options: RouterOptions, callback: AsyncCallback<void>): void;

  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 9
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function pushUrl(options: RouterOptions): Promise<void>;

  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @param { AsyncCallback<void> } callback - the callback of pushUrl.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 9
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @param { AsyncCallback<void> } callback - the callback of pushUrl.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @param { AsyncCallback<void> } callback - the callback of pushUrl.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function pushUrl(options: RouterOptions, mode: RouterMode, callback: AsyncCallback<void>): void;

  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 9
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { RouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100002 - Uri error. The URI of the page to redirect is incorrect or does not exist
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function pushUrl(options: RouterOptions, mode: RouterMode): Promise<void>;

  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { RouterOptions } options - Options.
   * @syscap SystemCapability.ArkUI.ArkUI.Lite
   * @since 8
   * @deprecated since 9
   * @useinstead ohos.router.router#replaceUrl
   */
  function replace(options: RouterOptions): void;

  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { RouterOptions } options - Options.
   * @param { AsyncCallback<void> } callback - the callback of replaceUrl.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 200002 - Uri error. The URI of the page to be used for replacement is incorrect or does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Lite
   * @since 9
   */
  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { RouterOptions } options - Options.
   * @param { AsyncCallback<void> } callback - the callback of replaceUrl.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 200002 - Uri error. The URI of the page to be used for replacement is incorrect or does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Lite
   * @atomicservice
   * @since 11
   */
  function replaceUrl(options: RouterOptions, callback: AsyncCallback<void>): void;

  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { RouterOptions } options - Options.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 200002 - Uri error. The URI of the page to be used for replacement is incorrect or does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Lite
   * @since 9
   */
  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { RouterOptions } options - Options.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 200002 - Uri error. The URI of the page to be used for replacement is incorrect or does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Lite
   * @atomicservice
   * @since 11
   */
  function replaceUrl(options: RouterOptions): Promise<void>;

  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { RouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @param { AsyncCallback<void> } callback - the callback of replaceUrl.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 200002 - Uri error. The URI of the page to be used for replacement is incorrect or does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Lite
   * @since 9
   */
  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { RouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @param { AsyncCallback<void> } callback - the callback of replaceUrl.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 200002 - Uri error. The URI of the page to be used for replacement is incorrect or does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Lite
   * @atomicservice
   * @since 11
   */
  function replaceUrl(options: RouterOptions, mode: RouterMode, callback: AsyncCallback<void>): void;

  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { RouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if can not get the delegate, only throw in standard system.
   * @throws { BusinessError } 200002 - Uri error. The URI of the page to be used for replacement is incorrect or does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Lite
   * @since 9
   */
  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { RouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if can not get the delegate, only throw in standard system.
   * @throws { BusinessError } 200002 - Uri error. The URI of the page to be used for replacement is incorrect or does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Lite
   * @atomicservice
   * @since 11
   */
  function replaceUrl(options: RouterOptions, mode: RouterMode): Promise<void>;

  /**
   * Returns to the previous page or a specified page.
   *
   * @param { RouterOptions } options - Options.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   */
  /**
   * Returns to the previous page or a specified page.
   *
   * @param { RouterOptions } options - Options.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Returns to the previous page or a specified page.
   *
   * @param { RouterOptions } options - Options.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function back(options?: RouterOptions): void;

 /**
   * Returns to the specified page.
   *
   * @param { number } index - index of page.
   * @param { Object } [params] - params of page.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 12
   */
 function back(index: number, params?: Object): void;

  /**
   * Clears all historical pages and retains only the current page at the top of the stack.
   *
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   */
  /**
   * Clears all historical pages and retains only the current page at the top of the stack.
   *
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Clears all historical pages and retains only the current page at the top of the stack.
   *
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function clear(): void;

  /**
   * Obtains the number of pages in the current stack.
   *
   * @returns { string } Number of pages in the stack. The maximum value is 32.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   */
  /**
   * Obtains the number of pages in the current stack.
   *
   * @returns { string } Number of pages in the stack. The maximum value is 32.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Obtains the number of pages in the current stack.
   *
   * @returns { string } Number of pages in the stack. The maximum value is 32.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function getLength(): string;

  /**
   * Obtains information about the current page state.
   *
   * @returns { RouterState } Page state.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   */
  /**
   * Obtains information about the current page state.
   *
   * @returns { RouterState } Page state.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Obtains information about the current page state.
   *
   * @returns { RouterState } Page state.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function getState(): RouterState;

   /**
   * Obtains page information by index.
   *
   * @param { number } index - Index of page.
   * @returns { RouterState | undefined } Page state.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 12
   */
   function getStateByIndex(index: number): RouterState | undefined;

   /**
    * Obtains page information by url.
    *
    * @param { string } url - URL of page.
    * @returns { Array<RouterState> } Page state.
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @crossplatform
    * @since 12
    */
   function getStateByUrl(url: string): Array<RouterState>;
 
  /**
   * Pop up dialog to ask whether to back
   *
   * @param { EnableAlertOptions } options - Options.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   * @deprecated since 9
   * @useinstead ohos.router.router#showAlertBeforeBackPage
   */
  function enableAlertBeforeBackPage(options: EnableAlertOptions): void;

  /**
   * Pop up alert dialog to ask whether to back
   *
   * @param { EnableAlertOptions } options - Options.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 9
   */
  /**
   * Pop up alert dialog to ask whether to back
   *
   * @param { EnableAlertOptions } options - Options.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Pop up alert dialog to ask whether to back
   *
   * @param { EnableAlertOptions } options - Options.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function showAlertBeforeBackPage(options: EnableAlertOptions): void;

  /**
   * Cancel enableAlertBeforeBackPage
   *
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   * @deprecated since 9
   * @useinstead ohos.router.router#hideAlertBeforeBackPage
   */
  function disableAlertBeforeBackPage(): void;

  /**
   * Hide alert before back page
   *
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 9
   */
  /**
   * Hide alert before back page
   *
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Hide alert before back page
   *
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function hideAlertBeforeBackPage(): void;

  /**
   * Obtains information about the current page params.
   *
   * @returns { Object } Page params.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   */
  /**
   * Obtains information about the current page params.
   *
   * @returns { Object } Page params.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Obtains information about the current page params.
   *
   * @returns { Object } Page params.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function getParams(): Object;

  /**
   * @typedef NamedRouterOptions
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * @typedef NamedRouterOptions
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  interface NamedRouterOptions {
    /**
     * Name of the destination named route.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @since 10
     */
    /**
     * Name of the destination named route.
     *
     * @type { string }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @atomicservice
     * @since 11
     */
    name: string;

    /**
     * Data that needs to be passed to the destination page during navigation.
     *
     * @type { ?Object }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @since 10
     */
    /**
     * Data that needs to be passed to the destination page during navigation.
     *
     * @type { ?Object }
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @crossplatform
     * @atomicservice
     * @since 11
     */
    params?: Object;
  }

  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { AsyncCallback<void> } callback - the callback of pushNamedRoute.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { AsyncCallback<void> } callback - the callback of pushNamedRoute.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function pushNamedRoute(options: NamedRouterOptions, callback: AsyncCallback<void>): void;

  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { NamedRouterOptions } options - Options.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { NamedRouterOptions } options - Options.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function pushNamedRoute(options: NamedRouterOptions): Promise<void>;

  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @param { AsyncCallback<void> } callback - the callback of pushNamedRoute.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @param { AsyncCallback<void> } callback - the callback of pushNamedRoute.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function pushNamedRoute(options: NamedRouterOptions, mode: RouterMode, callback: AsyncCallback<void>): void;

  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Navigates to a specified page in the application based on the page URL and parameters.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - Internal error.
   * @throws { BusinessError } 100003 - Page stack error. Too many pages are pushed.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function pushNamedRoute(options: NamedRouterOptions, mode: RouterMode): Promise<void>;

  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { AsyncCallback<void> } callback - the callback of replaceNamedRoute.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { AsyncCallback<void> } callback - the callback of replaceNamedRoute.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function replaceNamedRoute(options: NamedRouterOptions, callback: AsyncCallback<void>): void;

  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { NamedRouterOptions } options - Options.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { NamedRouterOptions } options - Options.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function replaceNamedRoute(options: NamedRouterOptions): Promise<void>;

  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @param { AsyncCallback<void> } callback - the callback of replaceNamedRoute.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @param { AsyncCallback<void> } callback - the callback of replaceNamedRoute.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if UI execution context not found, only throw in standard system.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function replaceNamedRoute(options: NamedRouterOptions, mode: RouterMode, callback: AsyncCallback<void>): void;

  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if can not get the delegate, only throw in standard system.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   */
  /**
   * Replaces the current page with another one in the application. The current page is destroyed after replacement.
   *
   * @param { NamedRouterOptions } options - Options.
   * @param { RouterMode } mode - RouterMode.
   * @returns { Promise<void> } the promise returned by the function.
   * @throws { BusinessError } 401 - Parameter error. Possible causes: 
   * <br> 1. Mandatory parameters are left unspecified.
   * <br> 2. Incorrect parameters types.
   * <br> 3. Parameter verification failed.
   * @throws { BusinessError } 100001 - if can not get the delegate, only throw in standard system.
   * @throws { BusinessError } 100004 - Named route error. The named route does not exist.
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @atomicservice
   * @since 11
   */
  function replaceNamedRoute(options: NamedRouterOptions, mode: RouterMode): Promise<void>;
}

export default router;