import { DataType } from '../types/data_type';
/**
 * Contains internatialization functionality.
 */
export declare namespace i18n {
    export interface LocaleSettings {
        shortDateFormat?: string;
        editDateFormat?: string;
        longDateFormat?: string;
        shortTimeFormat?: string;
        editTimeFormat?: string;
        longTimeFormat?: string;
        shortMonthNames?: string[];
        longMonthNames?: string[];
        shortWeekDayNames?: string[];
        longWeekDayNames?: string[];
        decimalSeparator?: string;
        currency?: string;
    }
    export interface TextResources {
        [propName: string]: string | TextResources;
    }
    export interface LocaleInfo {
        localeId?: string;
        englishName?: string;
        displayName?: string;
        texts?: TextResources;
        settings?: LocaleSettings;
    }
    export interface LocaleInfoItem {
        locale: string;
        englishName?: string;
        displayName?: string;
    }
    type LocaleMapper = (info: LocaleInfo) => void;
    export function addMapper(mapper: LocaleMapper): void;
    /**
     * Gets added locales with their names.
     * @returns  The locales.
     */
    export function getLocales(): LocaleInfoItem[];
    /**
     * Gets the current locale ID.
     * @returns The locale.
     */
    export function getCurrentLocale(): string;
    /**
    * Sets the curent locale.
    * @deprecated Use setCurrentLocale instead
    * @param l The locale.
    */
    export function setLocale(l: string): void;
    /**
     * Sets the curent locale.
     * @param localeId The locale.
     */
    export function setCurrentLocale(localeId: string): void;
    /**
     * Returns localized text by the key defined in parameter.
     * Here we get the text of the resource string assigned to CmdClickToAddCondition key:
     *
     ```
       const text = i18n.getText('CmdClickToAddCondition')
     ```
     * @param args The keys of the resource string.
     * @returns Text of the resource defined by key or null if the key is not found
     *
     */
    export function getText(...args: string[]): string;
    export function getLocaleSettings(): LocaleSettings;
    export function getOneLocaleSetting(key: string): any;
    export function getShortMonthName(monthNum: number): string;
    export function getLongMonthName(monthNum: number): string;
    export function getShortWeekDayName(dayNum: number): string;
    export function getLongWeekDayName(dayNum: number): string;
    /**
     * Updates the locale settings (date/time formats, separators, etc) for the specified locale.
     * @param settingsToUpdate a LocaleSettings object
     */
    export function updateLocaleSettings(settingsToUpdate: LocaleSettings): void;
    /**
     * Updates the texts for the current locale
     * @param texts A plain JS object that contains textual resources
     */
    export function updateLocaleTexts(texts: TextResources): void;
    /**
     * Updates the default texts for the current locale and all other locales available now
     * This function does rewrite the texts in the locales, it just adds new textual resources if they didn't exists previously
     * @param texts A plain JS object that contains textual resources
     */
    export function updateDefaultTexts(texts: TextResources): void;
    /**
     * Updates the information for the specified locale.
     * @param localeId The locale ID (like 'en', 'de', 'uk', etc).
     * If the locale does exist yet - it will be added
     * @param localeInfo  a LocaleInfo object that contains the locale settings and textual resources
     */
    export function updateLocaleInfo(localeId: string, localeInfo: LocaleInfo): void;
    /**
     * Adds the locale.
     * @param localeId The locale ID (like 'en', 'de', 'uk', etc).
     * If the locale does exist yet - it will be created
     * @param localeInfo - a LocaleInfo object that contains the locale settings and textual resources
     */
    export function addLocale(localeId: string, localeInfo: LocaleInfo): void;
    export function resetLocales(): void;
    /**
     * Returns string representation of the date/time value according to the custom format (second parameter)
     * The format is compatible with the one used in .NET: https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-date-and-time-format-strings
     * @param date
     * @param format
     */
    export function dateTimeToStr(date: Date, format: string): string;
    export function dateTimeToStrEx(dateTime: Date, dataType: DataType, format?: string): string;
    /**
    * Converts a numeric value to the string taking into the account the decimal separator
    * @param num - the number to convert
    * @param format - the format of the number representation (D - decimal, F - float, C - currency)
    * @param decimalSeparator - the symbol that represents decimal separator. If not specified the function gets the one from the current locale settings.
    */
    export function numberToStr(num: number, format?: string, decimalSeparator?: string): string;
    export function booleanToStr(bool: boolean, format?: string): string;
    export {};
}