import dayjs, { OpUnitType } from 'dayjs';
import 'dayjs/locale/nb';
export type ParseableDate = string | number | Date | dayjs.Dayjs;
export type DateInput = ParseableDate | null | undefined;
export interface ParserOptions {
    utc?: boolean;
    format?: string;
}
export declare class DateRangeValue {
    readonly from: DateInput;
    readonly to: DateInput;
    constructor(from: DateInput, to: DateInput);
    get valid(): boolean;
    isValid(allowNull?: boolean, allowSame?: boolean, unit?: OpUnitType): boolean;
    compare({ from, to }: DateRangeValue, unit?: OpUnitType): boolean;
}
export declare const parseDate: (datetime: ParseableDate, { format, utc }?: ParserOptions) => dayjs.Dayjs;
export declare const hasDateChanged: (a: DateInput, b: DateInput) => boolean;
export declare const isDateValid: (date: DateInput, allowNull?: boolean) => boolean;
export declare const isSameOrBefore: (point: ParseableDate, match: ParseableDate, unit?: OpUnitType) => boolean;
export declare const isSameOrAfter: (point: ParseableDate, match: ParseableDate, unit?: OpUnitType) => boolean;
export declare const getShortDate: (datetime: string, options?: ParserOptions) => string;
export declare const getTime: (datetime: string, options?: ParserOptions) => string;
export declare const getFullDate: (datetime: string, options?: ParserOptions) => string;
export declare const getExcelDateTime: (datetime: string, options?: ParserOptions) => string;
export { dayjs as DateTime };
export default dayjs;