/*
 * 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 LocalizationKit
 */

/**
 * Provides internationalization related APIs.
 *
 * @namespace intl
 * @syscap SystemCapability.Global.I18n
 * @since 6
 */
/**
 * Provides internationalization related APIs.
 *
 * @namespace intl
 * @syscap SystemCapability.Global.I18n
 * @crossplatform
 * @since 10
 */
/**
 * Provides internationalization related APIs.
 *
 * @namespace intl
 * @syscap SystemCapability.Global.I18n
 * @crossplatform
 * @form
 * @since 11
 */
/**
 * Provides internationalization related APIs.
 *
 * @namespace intl
 * @syscap SystemCapability.Global.I18n
 * @crossplatform
 * @form
 * @atomicservice
 * @since 12
 */
declare namespace intl {
  /**
   * Provides the options of Locale.
   *
   * @interface LocaleOptions
   * @syscap SystemCapability.Global.I18n
   * @since 6
   */
  /**
   * Provides the options of Locale.
   *
   * @interface LocaleOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Provides the options of Locale.
   *
   * @interface LocaleOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @form
   * @since 11
   */
  /**
   * Provides the options of Locale.
   *
   * @interface LocaleOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @form
   * @atomicservice
   * @since 12
   */
  export interface LocaleOptions {
    /**
     * Indicates the calendar.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the calendar.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the calendar.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the calendar.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the calendar.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    calendar?: string;

    /**
     * Indicates the collation.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the collation.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the collation.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the collation.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the collation.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    collation?: string;

    /**
     * Indicates the hourCycle.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the hourCycle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the hourCycle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the hourCycle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the hourCycle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    hourCycle?: string;

    /**
     * Indicates the numberingSystem.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the numberingSystem.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the numberingSystem.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the numberingSystem.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the numberingSystem.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    numberingSystem?: string;

    /**
     * Indicates the numeric.
     *
     * @type { boolean }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the numeric.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the numeric.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the numeric.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the numeric.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    numeric?: boolean;

    /**
     * Indicates the caseFirst.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the caseFirst.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the caseFirst.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the caseFirst.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the caseFirst.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    caseFirst?: string;
  }

  /**
   * Provides APIs for obtaining locale information.
   *
   * @syscap SystemCapability.Global.I18n
   * @since 6
   */
  /**
   * Provides APIs for obtaining locale information.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Provides APIs for obtaining locale information.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @form
   * @since 11
   */
  /**
   * Provides APIs for obtaining locale information.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @form
   * @atomicservice
   * @since 12
   */
  export class Locale {
    /**
     * A constructor used to create a Locale object.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * A constructor used to create a Locale object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create a Locale object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * A constructor used to create a Locale object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    constructor();

    /**
     * A constructor used to create a Locale object.
     *
     * @param { string } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region.
     * @param { LocaleOptions } options - Indicates Locale option object use to initialize the Locale object.
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * A constructor used to create a Locale object.
     *
     * @param { string } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region.
     * @param { LocaleOptions } options - Indicates Locale option object use to initialize the Locale object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create a Locale object.
     *
     * @param { string } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region.
     * @param { LocaleOptions } options - Indicates Locale option object use to initialize the Locale object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * A constructor used to create a Locale object.
     *
     * @param { string } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region.
     * @param { LocaleOptions } options - Indicates Locale option object use to initialize the Locale object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    constructor(locale: string, options?: LocaleOptions);

    /**
     * Indicates the language of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the language of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the language of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the language of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    language: string;

    /**
     * Indicates the script of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the script of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the script of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the script of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    script: string;

    /**
     * Indicates the region of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the region of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the region of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the region of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    region: string;

    /**
     * Indicates the basic locale information, which is returned as a substring of
     * a complete locale string.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the basic locale information, which is returned as a substring of
     * a complete locale string.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the basic locale information, which is returned as a substring of
     * a complete locale string.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the basic locale information, which is returned as a substring of
     * a complete locale string.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    baseName: string;

    /**
     * Indicates the case first style of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the case first style of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the case first style of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the case first style of the locale.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    caseFirst: string;

    /**
     * Indicates the calendar.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the calendar.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the calendar.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the calendar.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    calendar: string;

    /**
     * Indicates the collation.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the collation.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the collation.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the collation.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    collation: string;

    /**
     * Indicates the hour cycle.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the hour cycle.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the hour cycle.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the hour cycle.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    hourCycle: string;

    /**
     * Indicates the numbering system.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the numbering system.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the numbering system.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the numbering system.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    numberingSystem: string;

    /**
     * Indicates whether it is numeric.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates whether it is numeric.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates whether it is numeric.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates whether it is numeric.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    numeric: boolean;

    /**
     * Convert the locale information to string.
     *
     * @returns { string } locale information in string form.
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Convert the locale information to string.
     *
     * @returns { string } locale information in string form.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Convert the locale information to string.
     *
     * @returns { string } locale information in string form.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Convert the locale information to string.
     *
     * @returns { string } locale information in string form.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    toString(): string;

    /**
     * Maximize the locale's base information.
     *
     * @returns { Locale } maximized locale.
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Maximize the locale's base information.
     *
     * @returns { Locale } maximized locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Maximize the locale's base information.
     *
     * @returns { Locale } maximized locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Maximize the locale's base information.
     *
     * @returns { Locale } maximized locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    maximize(): Locale;

    /**
     * Minimize the locale's base information.
     *
     * @returns { Locale } minimized locale.
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Minimize the locale's base information.
     *
     * @returns { Locale } minimized locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Minimize the locale's base information.
     *
     * @returns { Locale } minimized locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Minimize the locale's base information.
     *
     * @returns { Locale } minimized locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    minimize(): Locale;
  }

  /**
   * Provides the options of date time format.
   *
   * @interface DateTimeOptions
   * @syscap SystemCapability.Global.I18n
   * @since 6
   */
  /**
   * Provides the options of date time format.
   *
   * @interface DateTimeOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Provides the options of date time format.
   *
   * @interface DateTimeOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @form
   * @since 11
   */
  /**
   * Provides the options of date time format.
   *
   * @interface DateTimeOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @form
   * @atomicservice
   * @since 12
   */
  export interface DateTimeOptions {
    /**
     * Indicates the locale.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the locale.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the locale.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the locale.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the locale.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    locale?: string;

    /**
     * Indicates the dateStyle.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the dateStyle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the dateStyle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the dateStyle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the dateStyle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    dateStyle?: string;

    /**
     * Indicates the timeStyle.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the timeStyle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the timeStyle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the timeStyle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the timeStyle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    timeStyle?: string;

    /**
     * Indicates the hourCycle.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the hourCycle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the hourCycle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the hourCycle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the hourCycle.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    hourCycle?: string;

    /**
     * Indicates the timeZone.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the timeZone.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the timeZone.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the timeZone.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the timeZone.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    timeZone?: string;

    /**
     * Indicates the numberingSystem.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the numberingSystem.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the numberingSystem.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the numberingSystem.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the numberingSystem.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    numberingSystem?: string;

    /**
     * Indicates the hour12.
     *
     * @type { boolean }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the hour12.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the hour12.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the hour12.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the hour12.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    hour12?: boolean;

    /**
     * Indicates the weekday.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the weekday.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the weekday.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the weekday.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the weekday.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    weekday?: string;

    /**
     * Indicates the era.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the era.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the era.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the era.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the era.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    era?: string;

    /**
     * Indicates the year.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the year.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the year.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the year.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the year.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    year?: string;

    /**
     * Indicates the month.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the month.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the month.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the month.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the month.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    month?: string;

    /**
     * Indicates the day.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the day.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the day.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the day.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the day.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    day?: string;

    /**
     * Indicates the hour.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the hour.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the hour.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the hour.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the hour.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    hour?: string;

    /**
     * Indicates the minute.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the minute.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the minute.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the minute.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the minute.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    minute?: string;

    /**
     * Indicates the second.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the second.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the second.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the second.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the second.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    second?: string;

    /**
     * Indicates the timeZoneName.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the timeZoneName.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the timeZoneName.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the timeZoneName.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the timeZoneName.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    timeZoneName?: string;

    /**
     * Indicates the dayPeriod.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the dayPeriod.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the dayPeriod.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the dayPeriod.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the dayPeriod.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    dayPeriod?: string;

    /**
     * Indicates the localeMatcher.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the localeMatcher.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the localeMatcher.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the localeMatcher.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the localeMatcher.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    localeMatcher?: string;

    /**
     * Indicates the formatMatcher.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the formatMatcher.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the formatMatcher.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the formatMatcher.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Indicates the formatMatcher.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    formatMatcher?: string;
  }

  /**
   * Provides the API for formatting date strings.
   *
   * @syscap SystemCapability.Global.I18n
   * @since 6
   */
  /**
   * Provides the API for formatting date strings.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Provides the API for formatting date strings.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @form
   * @since 11
   */
  /**
   * Provides the API for formatting date strings.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @form
   * @atomicservice
   * @since 12
   */
  export class DateTimeFormat {
    /**
     * A constructor used to create a DateTimeFormat object.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * A constructor used to create a DateTimeFormat object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create a DateTimeFormat object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * A constructor used to create a DateTimeFormat object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    constructor();

    /**
     * A constructor used to create a DateTimeFormat object.
     *
     * @param { string | Array<string> } locale - Indicates character string containing the locale information, including
     *               the language and optionally the script and region, for the DateTimeFormat object.
     * @param { DateTimeOptions } [options] - Indicates the options used to format the date.
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * A constructor used to create a DateTimeFormat object.
     *
     * @param { string | Array<string> } locale - Indicates character string containing the locale information, including
     *               the language and optionally the script and region, for the DateTimeFormat object.
     * @param { DateTimeOptions } [options] - Indicates the options used to format the date.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create a DateTimeFormat object.
     *
     * @param { string | Array<string> } locale - Indicates character string containing the locale information, including
     *               the language and optionally the script and region, for the DateTimeFormat object.
     * @param { DateTimeOptions } [options] - Indicates the options used to format the date.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * A constructor used to create a DateTimeFormat object.
     *
     * @param { string | Array<string> } locale - Indicates character string containing the locale information, including
     *               the language and optionally the script and region, for the DateTimeFormat object.
     * @param { DateTimeOptions } [options] - Indicates the options used to format the date.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    constructor(locale: string | Array<string>, options?: DateTimeOptions);

    /**
     * Obtains the formatted date strings.
     *
     * @param { Date } date - Indicates the Date object to be formatted.
     * @returns { string } a date string formatted based on the specified locale.
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Obtains the formatted date strings.
     *
     * @param { Date } date - Indicates the Date object to be formatted.
     * @returns { string } a date string formatted based on the specified locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Obtains the formatted date strings.
     *
     * @param { Date } date - Indicates the Date object to be formatted.
     * @returns { string } a date string formatted based on the specified locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Obtains the formatted date strings.
     *
     * @param { Date } date - Indicates the Date object to be formatted.
     * @returns { string } a date string formatted based on the specified locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    format(date: Date): string;

    /**
     * Obtains the formatted date strings of a date range.
     *
     * @param { Date } startDate - Indicates the start date of the date range.
     * @param { Date } endDate - Indicates the end date of the date range.
     * @returns { string } a date string formatted based on the specified locale.
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Obtains the formatted date strings of a date range.
     *
     * @param { Date } startDate - Indicates the start date of the date range.
     * @param { Date } endDate - Indicates the end date of the date range.
     * @returns { string } a date string formatted based on the specified locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Obtains the formatted date strings of a date range.
     *
     * @param { Date } startDate - Indicates the start date of the date range.
     * @param { Date } endDate - Indicates the end date of the date range.
     * @returns { string } a date string formatted based on the specified locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Obtains the formatted date strings of a date range.
     *
     * @param { Date } startDate - Indicates the start date of the date range.
     * @param { Date } endDate - Indicates the end date of the date range.
     * @returns { string } a date string formatted based on the specified locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    formatRange(startDate: Date, endDate: Date): string;

    /**
     * Obtains the options of the DateTimeFormat object.
     *
     * @returns { DateTimeOptions } the options of the DateTimeFormat object.
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Obtains the options of the DateTimeFormat object.
     *
     * @returns { DateTimeOptions } the options of the DateTimeFormat object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Obtains the options of the DateTimeFormat object.
     *
     * @returns { DateTimeOptions } the options of the DateTimeFormat object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @since 11
     */
    /**
     * Obtains the options of the DateTimeFormat object.
     *
     * @returns { DateTimeOptions } the options of the DateTimeFormat object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @form
     * @atomicservice
     * @since 12
     */
    resolvedOptions(): DateTimeOptions;
  }

  /**
   * Provides the options of number format.
   *
   * @interface NumberOptions
   * @syscap SystemCapability.Global.I18n
   * @since 6
   */
  /**
   * Provides the options of number format.
   *
   * @interface NumberOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Provides the options of number format.
   *
   * @interface NumberOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @atomicservice
   * @since 12
   */
  export interface NumberOptions {
    /**
     * Indicates the locale.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the locale.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the locale.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the locale.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    locale?: string;

    /**
     * Indicates the currency.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the currency.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the currency.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the currency.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    currency?: string;

    /**
     * Indicates the currencySign.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the currencySign.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the currencySign.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the currencySign.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    currencySign?: string;

    /**
     * Indicates the currencyDisplay.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the currencyDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the currencyDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the currencyDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    currencyDisplay?: string;

    /**
     * Indicates the unit.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the unit.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the unit.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the unit.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    unit?: string;

    /**
     * Indicates the unitDisplay.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the unitDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the unitDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the unitDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    unitDisplay?: string;

    /**
     * Indicates the unitUsage.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * Indicates the unitUsage.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the unitUsage.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the unitUsage.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    unitUsage?: string;

    /**
     * Indicates the signDisplay.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the signDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the signDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the signDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    signDisplay?: string;

    /**
     * Indicates the compactDisplay.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the compactDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the compactDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the compactDisplay.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    compactDisplay?: string;

    /**
     * Indicates the notation.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the notation.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the notation.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the notation.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    notation?: string;

    /**
     * Indicates the localeMatcher.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the localeMatcher.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the localeMatcher.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the localeMatcher.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    localeMatcher?: string;

    /**
     * Indicates the style.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the style.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the style.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the style.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    style?: string;

    /**
     * Indicates the numberingSystem.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the numberingSystem.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the numberingSystem.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the numberingSystem.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    numberingSystem?: string;

    /**
     * Indicates the useGrouping.
     *
     * @type { boolean }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the useGrouping.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the useGrouping.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the useGrouping.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    useGrouping?: boolean;

    /**
     * Indicates the minimumIntegerDigits.
     *
     * @type { number }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the minimumIntegerDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the minimumIntegerDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the minimumIntegerDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    minimumIntegerDigits?: number;

    /**
     * Indicates the minimumFractionDigits.
     *
     * @type { number }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the minimumFractionDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the minimumFractionDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the minimumFractionDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    minimumFractionDigits?: number;

    /**
     * Indicates the maximumFractionDigits.
     *
     * @type { number }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the maximumFractionDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the maximumFractionDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the maximumFractionDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    maximumFractionDigits?: number;

    /**
     * Indicates the minimumSignificantDigits.
     *
     * @type { number }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the minimumSignificantDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the minimumSignificantDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the minimumSignificantDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    minimumSignificantDigits?: number;

    /**
     * Indicates the maximumSignificantDigits.
     *
     * @type { number }
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Indicates the maximumSignificantDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Indicates the maximumSignificantDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Indicates the maximumSignificantDigits.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    maximumSignificantDigits?: number;
  }

  /**
   * Provides the API for formatting number strings.
   *
   * @syscap SystemCapability.Global.I18n
   * @since 6
   */
  /**
   * Provides the API for formatting number strings.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Provides the API for formatting number strings.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @atomicservice
   * @since 12
   */
  export class NumberFormat {
    /**
     * A constructor used to create a NumberFormat object.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * A constructor used to create a NumberFormat object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create a NumberFormat object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    constructor();

    /**
     * A constructor used to create a NumberFormat object.
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the NumberFormat object.
     * @param { NumberOptions } [options] - Indicates the options used to format the number.
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * A constructor used to create a NumberFormat object.
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the NumberFormat object.
     * @param { NumberOptions } [options] - Indicates the options used to format the number.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create a NumberFormat object.
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the NumberFormat object.
     * @param { NumberOptions } [options] - Indicates the options used to format the number.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    constructor(locale: string | Array<string>, options?: NumberOptions);

    /**
     * Obtains the formatted number string.
     *
     * @param { number } number Indicates the number to be formatted.
     * @returns { string } a number string formatted based on the specified locale.
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Obtains the formatted number string.
     *
     * @param { number } number Indicates the number to be formatted.
     * @returns { string } a number string formatted based on the specified locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Obtains the formatted number string.
     *
     * @param { number } number Indicates the number to be formatted.
     * @returns { string } a number string formatted based on the specified locale.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    format(number: number): string;

    /**
     * Obtains the options of the NumberFormat object.
     *
     * @returns { NumberOptions } the options of the NumberFormat object.
     * @syscap SystemCapability.Global.I18n
     * @since 6
     */
    /**
     * Obtains the options of the NumberFormat object.
     *
     * @returns { NumberOptions } the options of the NumberFormat object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Obtains the options of the NumberFormat object.
     *
     * @returns { NumberOptions } the options of the NumberFormat object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    resolvedOptions(): NumberOptions;
  }

  /**
   * Provides the options of Collator
   *
   * @interface CollatorOptions
   * @syscap SystemCapability.Global.I18n
   * @since 8
   */
  /**
   * Provides the options of Collator
   *
   * @interface CollatorOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Provides the options of Collator
   *
   * @interface CollatorOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @atomicservice
   * @since 12
   */
  export interface CollatorOptions {
    /**
     * The locale matching algorithm to use.
     * Possible values are "lookup" and "best fit"; the default is "best fit".
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The locale matching algorithm to use.
     * Possible values are "lookup" and "best fit"; the default is "best fit".
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * The locale matching algorithm to use.
     * Possible values are "lookup" and "best fit"; the default is "best fit".
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The locale matching algorithm to use.
     * Possible values are "lookup" and "best fit"; the default is "best fit".
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    localeMatcher?: string;

    /**
     * Whether the comparison is for sorting or for searching for matching strings.
     * Possible values are "sort" and "search"; the default is "sort".
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * Whether the comparison is for sorting or for searching for matching strings.
     * Possible values are "sort" and "search"; the default is "sort".
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Whether the comparison is for sorting or for searching for matching strings.
     * Possible values are "sort" and "search"; the default is "sort".
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Whether the comparison is for sorting or for searching for matching strings.
     * Possible values are "sort" and "search"; the default is "sort".
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    usage?: string;

    /**
     * Which differences in the strings should lead to non-zero result values.
     * Possible values are "base", "accent", "case", "variant".
     * "base" are used when only strings that differ in base letters compare as unequal.
     * "accent" are used when only strings that differ in base letters or accents and
     *  other diacritic marks compare as unequal.
     * "case" are used when only strings that differ in base letters or case compare as unequal.
     * "variant" are used when Strings that differ in base letters, accents and other diacritic marks,
     *  or case compare as unequal.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * Which differences in the strings should lead to non-zero result values.
     * Possible values are "base", "accent", "case", "variant".
     * "base" are used when only strings that differ in base letters compare as unequal.
     * "accent" are used when only strings that differ in base letters or accents and
     *  other diacritic marks compare as unequal.
     * "case" are used when only strings that differ in base letters or case compare as unequal.
     * "variant" are used when Strings that differ in base letters, accents and other diacritic marks,
     *  or case compare as unequal.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Which differences in the strings should lead to non-zero result values.
     * Possible values are "base", "accent", "case", "variant".
     * "base" are used when only strings that differ in base letters compare as unequal.
     * "accent" are used when only strings that differ in base letters or accents and
     *  other diacritic marks compare as unequal.
     * "case" are used when only strings that differ in base letters or case compare as unequal.
     * "variant" are used when Strings that differ in base letters, accents and other diacritic marks,
     *  or case compare as unequal.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Which differences in the strings should lead to non-zero result values.
     * Possible values are "base", "accent", "case", "variant".
     * "base" are used when only strings that differ in base letters compare as unequal.
     * "accent" are used when only strings that differ in base letters or accents and
     *  other diacritic marks compare as unequal.
     * "case" are used when only strings that differ in base letters or case compare as unequal.
     * "variant" are used when Strings that differ in base letters, accents and other diacritic marks,
     *  or case compare as unequal.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    sensitivity?: string;

    /**
     * Whether punctuation should be ignored. default value is false.
     *
     * @type { boolean }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * Whether punctuation should be ignored. Default value is false.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Whether punctuation should be ignored. Default value is false.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Whether punctuation should be ignored. Default value is false.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    ignorePunctuation?: boolean;

    /**
     * Variant collations for certain locales.
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * Variant collations for certain locales.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Variant collations for certain locales.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Variant collations for certain locales.
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    collation?: string;

    /**
     * Whether numeric collation should be used. Default value is false.
     *
     * @type { boolean }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * Whether numeric collation should be used. Default value is false.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Whether numeric collation should be used. Default value is false.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Whether numeric collation should be used. Default value is false.
     *
     * @type { ?boolean }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    numeric?: boolean;

    /**
     * Whether upper case or lower case should sort first.
     * Possible values are "upper", "lower", or "false" (use the locale's default).
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * Whether upper case or lower case should sort first.
     * Possible values are "upper", "lower", or "false" (use the locale's default).
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * Whether upper case or lower case should sort first.
     * Possible values are "upper", "lower", or "false" (use the locale's default).
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Whether upper case or lower case should sort first.
     * Possible values are "upper", "lower", or "false" (use the locale's default).
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    caseFirst?: string;
  }

  /**
   * Enable language-sensitive string comparison.
   *
   * @syscap SystemCapability.Global.I18n
   * @since 8
   */
  /**
   * Enable language-sensitive string comparison.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Enable language-sensitive string comparison.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @atomicservice
   * @since 12
   */
  export class Collator {
    /**
     * A constructor used to create Collator object.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * A constructor used to create Collator object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create Collator object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    constructor();
    /**
     * A constructor used to create Collator Object;
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the Collator object.
     * @param { CollatorOptions } [options] - Indicates the options used to initialize Collator object.
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * A constructor used to create Collator Object;
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the Collator object.
     * @param { CollatorOptions } [options] - Indicates the options used to initialize Collator object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create Collator Object;
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the Collator object.
     * @param { CollatorOptions } [options] - Indicates the options used to initialize Collator object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    constructor(locale: string | Array<string>, options?: CollatorOptions);

    /**
     * compares two strings according to the sort order of this Collator object
     *
     * @param { string } first - The first string to compare.
     * @param { string } second - The second string to compare.
     * @returns { number } a number indicating how first compare to second:
     *         a negative value if string1 comes before string2;
     *         a positive value if string1 comes after string2;
     *         0 if they are considered equal.
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * compares two strings according to the sort order of this Collator object
     *
     * @param { string } first - The first string to compare.
     * @param { string } second - The second string to compare.
     * @returns { number } a number indicating how first compare to second:
     *         a negative value if string1 comes before string2;
     *         a positive value if string1 comes after string2;
     *         0 if they are considered equal.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * compares two strings according to the sort order of this Collator object
     *
     * @param { string } first - The first string to compare.
     * @param { string } second - The second string to compare.
     * @returns { number } a number indicating how first compare to second:
     *         a negative value if string1 comes before string2;
     *         a positive value if string1 comes after string2;
     *         0 if they are considered equal.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    compare(first: string, second: string): number;

    /**
     * Returns a new object with properties that reflect the locale and collation options computed
     * during initialization of the object.
     *
     * @returns { CollatorOptions } a CollatorOptions object with properties that reflect the properties of this object.
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * Returns a new object with properties that reflect the locale and collation options computed
     * during initialization of the object.
     *
     * @returns { CollatorOptions } a CollatorOptions object with properties that reflect the properties of this object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Returns a new object with properties that reflect the locale and collation options computed
     * during initialization of the object.
     *
     * @returns { CollatorOptions } a CollatorOptions object with properties that reflect the properties of this object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    resolvedOptions(): CollatorOptions;
  }

  /**
   * Provides the options of PluralRules
   *
   * @interface PluralRulesOptions
   * @syscap SystemCapability.Global.I18n
   * @since 8
   */
  /**
   * Provides the options of PluralRules
   *
   * @interface PluralRulesOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Provides the options of PluralRules
   *
   * @interface PluralRulesOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @atomicservice
   * @since 12
   */
  export interface PluralRulesOptions {
    /**
     * The locale matching algorithm to use.
     * Possible values are "lookup" and "best fit"; the default is "best fit".
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The locale matching algorithm to use.
     * Possible values are "lookup" and "best fit"; the default is "best fit".
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * The locale matching algorithm to use.
     * Possible values are "lookup" and "best fit"; the default is "best fit".
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The locale matching algorithm to use.
     * Possible values are "lookup" and "best fit"; the default is "best fit".
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    localeMatcher?: string;

    /**
     * The type to use. Possible values are: "cardinal", "ordinal"
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The type to use. Possible values are: "cardinal", "ordinal"
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * The type to use. Possible values are: "cardinal", "ordinal"
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The type to use. Possible values are: "cardinal", "ordinal"
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    type?: string;

    /**
     * The minimum number of integer digits to use.
     * Possible values are from 1 to 21; the default is 1.
     *
     * @type { number }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The minimum number of integer digits to use.
     * Possible values are from 1 to 21; the default is 1.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * The minimum number of integer digits to use.
     * Possible values are from 1 to 21; the default is 1.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The minimum number of integer digits to use.
     * Possible values are from 1 to 21; the default is 1.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    minimumIntegerDigits?: number;

    /**
     * The minimum number of fraction digits to use.
     * Possible values are from 0 to 20; the default for plain number and percent formatting is 0;
     *
     * @type { number }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The minimum number of fraction digits to use.
     * Possible values are from 0 to 20; the default for plain number and percent formatting is 0;
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * The minimum number of fraction digits to use.
     * Possible values are from 0 to 20; the default for plain number and percent formatting is 0;
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The minimum number of fraction digits to use.
     * Possible values are from 0 to 20; the default for plain number and percent formatting is 0;
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    minimumFractionDigits?: number;

    /**
     * The maximum number of fraction digits to use.
     * Possible values are from 0 to 20;
     * the default for plain number formatting is the larger of minimumFractionDigits and 3;
     *
     * @type { number }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The maximum number of fraction digits to use.
     * Possible values are from 0 to 20;
     * the default for plain number formatting is the larger of minimumFractionDigits and 3;
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * The maximum number of fraction digits to use.
     * Possible values are from 0 to 20;
     * the default for plain number formatting is the larger of minimumFractionDigits and 3;
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The maximum number of fraction digits to use.
     * Possible values are from 0 to 20;
     * the default for plain number formatting is the larger of minimumFractionDigits and 3;
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    maximumFractionDigits?: number;

    /**
     * The minimum number of significant digits to use.
     * Possible values are from 1 to 21; the default is 1.
     *
     * @type { number }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The minimum number of significant digits to use.
     * Possible values are from 1 to 21; the default is 1.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * The minimum number of significant digits to use.
     * Possible values are from 1 to 21; the default is 1.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The minimum number of significant digits to use.
     * Possible values are from 1 to 21; the default is 1.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    minimumSignificantDigits?: number;

    /**
     * The maximum number of significant digits to use.
     * Possible values are from 1 to 21; the default is 21.
     *
     * @type { number }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The maximum number of significant digits to use.
     * Possible values are from 1 to 21; the default is 21.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * The maximum number of significant digits to use.
     * Possible values are from 1 to 21; the default is 21.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The maximum number of significant digits to use.
     * Possible values are from 1 to 21; the default is 21.
     *
     * @type { ?number }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    maximumSignificantDigits?: number;
  }

  /**
   * Enables plural-sensitive formatting and plural-related language rules.
   *
   * @syscap SystemCapability.Global.I18n
   * @since 8
   */
  /**
   * Enables plural-sensitive formatting and plural-related language rules.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Enables plural-sensitive formatting and plural-related language rules.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @atomicservice
   * @since 12
   */
  export class PluralRules {
    /**
     * A constructor used to create PluralRules object.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * A constructor used to create PluralRules object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create PluralRules object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    constructor();

    /**
     * A constructor used to create PluralRules object.
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the PluralRules object.
     * @param { PluralRulesOptions } [options] - Indicates the options used to initialize PluralRules object.
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * A constructor used to create PluralRules object.
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the PluralRules object.
     * @param { PluralRulesOptions } [options] - Indicates the options used to initialize PluralRules object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create PluralRules object.
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the PluralRules object.
     * @param { PluralRulesOptions } [options] - Indicates the options used to initialize PluralRules object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    constructor(locale: string | Array<string>, options?: PluralRulesOptions);

    /**
     * Returns a string indicating which plural rule to use for locale-aware formatting.
     *
     * @param { number } n - The number to get a plural rule for.
     * @returns { string } A string representing the pluralization category of the number,
     *         can be one of zero, one, two, few, many or other.
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * Returns a string indicating which plural rule to use for locale-aware formatting.
     *
     * @param { number } n - The number to get a plural rule for.
     * @returns { string } A string representing the pluralization category of the number,
     *         can be one of zero, one, two, few, many or other.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Returns a string indicating which plural rule to use for locale-aware formatting.
     *
     * @param { number } n - The number to get a plural rule for.
     * @returns { string } A string representing the pluralization category of the number,
     *         can be one of zero, one, two, few, many or other.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    select(n: number): string;
  }

  /**
   * Provides the input options of RelativeTimeFormat.
   *
   * @interface RelativeTimeFormatInputOptions
   * @syscap SystemCapability.Global.I18n
   * @since 8
   */
  /**
   * Provides the input options of RelativeTimeFormat.
   *
   * @interface RelativeTimeFormatInputOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Provides the input options of RelativeTimeFormat.
   *
   * @interface RelativeTimeFormatInputOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @atomicservice
   * @since 12
   */
  export interface RelativeTimeFormatInputOptions {
    /**
     * The locale matching algorithm to use.
     * Possible values are: lookup, best fit
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The locale matching algorithm to use.
     * Possible values are: lookup, best fit
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * The locale matching algorithm to use.
     * Possible values are: lookup, best fit
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The locale matching algorithm to use.
     * Possible values are: lookup, best fit
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    localeMatcher?: string;

    /**
     * The format of output message.
     * Possible values are: always, auto
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The format of output message.
     * Possible values are: always, auto
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * The format of output message.
     * Possible values are: always, auto
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The format of output message.
     * Possible values are: always, auto
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    numeric?: string;

    /**
     * The length of the internationalized message.
     * Possible values are: long, short, narrow
     *
     * @type { string }
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The length of the internationalized message.
     * Possible values are: long, short, narrow
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @since 9
     */
    /**
     * The length of the internationalized message.
     * Possible values are: long, short, narrow
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The length of the internationalized message.
     * Possible values are: long, short, narrow
     *
     * @type { ?string }
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    style?: string;
  }

  /**
   * Provides the resolved options of RelativeTimeFormat.
   *
   * @interface RelativeTimeFormatResolvedOptions
   * @syscap SystemCapability.Global.I18n
   * @since 8
   */
  /**
   * Provides the resolved options of RelativeTimeFormat.
   *
   * @interface RelativeTimeFormatResolvedOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Provides the resolved options of RelativeTimeFormat.
   *
   * @interface RelativeTimeFormatResolvedOptions
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @atomicservice
   * @since 12
   */
  export interface RelativeTimeFormatResolvedOptions {
    /**
     * The BCP 47 language tag for the locale actually used.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The BCP 47 language tag for the locale actually used.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The BCP 47 language tag for the locale actually used.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    locale: string;

    /**
     * The length of the internationalized message.
     * Possible values are: long, short, narrow
     *
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The length of the internationalized message.
     * Possible values are: long, short, narrow
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The length of the internationalized message.
     * Possible values are: long, short, narrow
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    style: string;

    /**
     * The format of output message.
     * Possible values are: always, auto
     *
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The format of output message.
     * Possible values are: always, auto
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The format of output message.
     * Possible values are: always, auto
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    numeric: string;

    /**
     * The value requested using the Unicode extension key "nu" or filled in as a default.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * The value requested using the Unicode extension key "nu" or filled in as a default.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * The value requested using the Unicode extension key "nu" or filled in as a default.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    numberingSystem: string;
  }

  /**
   * Given a Time period length value and a unit, RelativeTimeFormat object enables
   * language-sensitive relative time formatting.
   *
   * @syscap SystemCapability.Global.I18n
   * @since 8
   */
  /**
   * Given a Time period length value and a unit, RelativeTimeFormat object enables
   * language-sensitive relative time formatting.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @since 10
   */
  /**
   * Given a Time period length value and a unit, RelativeTimeFormat object enables
   * language-sensitive relative time formatting.
   *
   * @syscap SystemCapability.Global.I18n
   * @crossplatform
   * @atomicservice
   * @since 12
   */
  export class RelativeTimeFormat {
    /**
     * A constructor used to create RelativeTimeFormat object.
     *
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * A constructor used to create RelativeTimeFormat object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create RelativeTimeFormat object.
     *
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    constructor();

    /**
     * A constructor used to create RelativeTimeFormat object.
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the RelativeTimeFormat object.
     * @param { RelativeTimeFormatInputOptions } [options] - Indicates the options used to initialize RelativeTimeFormat object.
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * A constructor used to create RelativeTimeFormat object.
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the RelativeTimeFormat object.
     * @param { RelativeTimeFormatInputOptions } [options] - Indicates the options used to initialize RelativeTimeFormat object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * A constructor used to create RelativeTimeFormat object.
     *
     * @param { string | Array<string> } locale - Indicates a character string containing the locale information, including
     *               the language and optionally the script and region, for the RelativeTimeFormat object.
     * @param { RelativeTimeFormatInputOptions } [options] - Indicates the options used to initialize RelativeTimeFormat object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    constructor(locale: string | Array<string>, options?: RelativeTimeFormatInputOptions);

    /**
     * formats a value and unit according to the locale and formatting options of this object.
     *
     * @param { number } value - Numeric value to use in the internationalized relative time message.
     * @param { string } unit - Unit to use in the relative time internationalized message.
     *             Possible values are: year, quarter, month, week, day, hour, minute, second.
     * @returns { string } formatted language-sensitive relative time.
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * formats a value and unit according to the locale and formatting options of this object.
     *
     * @param { number } value - Numeric value to use in the internationalized relative time message.
     * @param { string } unit - Unit to use in the relative time internationalized message.
     *             Possible values are: year, quarter, month, week, day, hour, minute, second.
     * @returns { string } formatted language-sensitive relative time.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * formats a value and unit according to the locale and formatting options of this object.
     *
     * @param { number } value - Numeric value to use in the internationalized relative time message.
     * @param { string } unit - Unit to use in the relative time internationalized message.
     *             Possible values are: year, quarter, month, week, day, hour, minute, second.
     * @returns { string } formatted language-sensitive relative time.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    format(value: number, unit: string): string;

    /**
     * returns an Array of objects representing the relative time format in parts that can be used for
     * custom locale-aware formatting
     *
     * @param { number } value - Numeric value to use in the internationalized relative time message.
     * @param { string } unit - to use in the relative time internationalized message.
     *             Possible values are: year, quarter, month, week, day, hour, minute, second.
     * @returns { Array<object> } an Array of objects representing the relative time format in parts
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * returns an Array of objects representing the relative time format in parts that can be used for
     * custom locale-aware formatting
     *
     * @param { number } value - Numeric value to use in the internationalized relative time message.
     * @param { string } unit - to use in the relative time internationalized message.
     *             Possible values are: year, quarter, month, week, day, hour, minute, second.
     * @returns { Array<object> } an Array of objects representing the relative time format in parts
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * returns an Array of objects representing the relative time format in parts that can be used for
     * custom locale-aware formatting
     *
     * @param { number } value - Numeric value to use in the internationalized relative time message.
     * @param { string } unit - to use in the relative time internationalized message.
     *             Possible values are: year, quarter, month, week, day, hour, minute, second.
     * @returns { Array<object> } an Array of objects representing the relative time format in parts
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    formatToParts(value: number, unit: string): Array<object>;

    /**
     * Returns a new object with properties that reflect the locale and formatting options computed during
     * initialization of the object.
     *
     * @returns { RelativeTimeFormatResolvedOptions } RelativeTimeFormatOptions which reflect the locale and formatting options of the object.
     * @syscap SystemCapability.Global.I18n
     * @since 8
     */
    /**
     * Returns a new object with properties that reflect the locale and formatting options computed during
     * initialization of the object.
     *
     * @returns { RelativeTimeFormatResolvedOptions } RelativeTimeFormatOptions which reflect the locale and formatting options of the object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @since 10
     */
    /**
     * Returns a new object with properties that reflect the locale and formatting options computed during
     * initialization of the object.
     *
     * @returns { RelativeTimeFormatResolvedOptions } RelativeTimeFormatOptions which reflect the locale and formatting options of the object.
     * @syscap SystemCapability.Global.I18n
     * @crossplatform
     * @atomicservice
     * @since 12
     */
    resolvedOptions(): RelativeTimeFormatResolvedOptions;
  }
}
export default intl;