export declare function asDate(value: Date | undefined): Date;
export declare function getSegmentLimits(date: Date, type: string, options: Intl.ResolvedDateTimeFormatOptions): {
    value: number;
    minValue: number;
    maxValue: number;
} | {
    value?: undefined;
    minValue?: undefined;
    maxValue?: undefined;
};
export declare function add(value: Date, part: string, amount: number, options: Intl.ResolvedDateTimeFormatOptions): Date;
export declare function cycleValue(value: number, amount: number, min: number, max: number, round?: boolean): number;
export declare function setSegment(value: Date, part: string, segmentValue: number, options: Intl.ResolvedDateTimeFormatOptions): Date;
/**
 * Converts unicode number strings to real JS numbers.
 * Numbers can be displayed and typed in many number systems, but JS
 * only understands latin numbers.
 * @see https://www.fileformat.info/info/unicode/category/Nd/list.htm
 * for a list of unicode numeric characters.
 * Currently only Arabic and Latin numbers are supported, but more
 * could be added here in the future.
 * Keep this in sync with `isNumeric` below.
 */
export declare function parseNumber(str: string): number;
/**
 * Checks whether a unicode string could be converted to a number.
 * Keep this in sync with `parseNumber` above.
 */
export declare function isNumeric(str: string): boolean;