import { Exception } from '@/data-helpers/Exception';
import { Serializable } from '@/data-helpers';
export interface Duration {
    years?: number;
    months?: number;
    days?: number;
    quarters?: number;
    weeks?: number;
    hours?: number;
    minutes?: number;
    seconds?: number;
}
export declare class DateTime implements Serializable {
    private static readonly DAYS_OF_WEEK;
    private static readonly MONTHS;
    private readonly value;
    private constructor();
    /**
     * Get a DateTime instance created at the current moment of calling the method
     */
    static now(): DateTime;
    /**
     * Get a DateTime instance with a given timestamp
     *
     * @param milliseconds the javascript timestamp
     */
    static fromTimestamp(milliseconds: number): DateTime;
    /**
     * Get a DateTime instance created with a given ISO formatted string
     *
     * @param isoString The ISO formatted date time string
     */
    static fromISOString(isoString: string): DateTime;
    /**
     * Get a DateTime instance created with a given date time string and a given format
     *
     * We follow the formatting as presented by Moment or Luxon.
     * https://moment.github.io/luxon/#/parsing?id=table-of-tokens
     *
     * @param datetime The date time string
     * @param format The format of the given date time string
     */
    static from(datetime: string, format: string): DateTime;
    /**
     * Add the given duration to the DateTime and return a new DateTime
     *
     * @param duration the duration to be added
     */
    add(duration: Duration): DateTime;
    /**
     * Subtract the given duration to the DateTime and return a new DateTime
     *
     * @param duration the duration to be subtracted
     */
    subtract(duration: Duration): DateTime;
    /**
     * Get the DateTime as ISO formatted string
     *
     * Format: yyyy-MM-ddTHH:mm:ss.SSSZ
     * Example: 2022-06-24T20:10:41.193Z
     */
    toISOString(): string;
    /**
     * Get the DateTime as a Locale formatted string
     *
     * Format: dd/m/yyyy hh:mm:ss a
     * Example: 24/6/2022, 10:10:41 pm
     */
    toLocaleString(): string;
    /**
     * Get the DateTime as an UTC formatted string
     *
     * Format: EEE, dd MMM yyyy HH:mm:ss GMT
     * Example: Fri, 24 Jun 2022 20:10:41 GMT
     */
    toUTCString(): string;
    /**
     * Get the DateTime as an RFC2822 formatted string
     *
     * Format: EEE, dd MMM yyyy HH:mm:ss +0000
     * Example: Fri, 24 Jun 2022 20:10:41 +0000
     */
    toRFC2822(): string;
    /**
     * Get the DateTime as a javascript date toString formatted string
     *
     * Example: Fri Jun 24 2022 22:10:41 GMT+0200 (Central European Summer Time)
     */
    toString(): string;
    /**
     * Get the DateTime as a javascript timestamp
     */
    timestamp(): number;
    toJSON(): object;
    private doMath;
}
export declare class InvalidDateTimeException extends Exception<string> {
    constructor(message?: string);
}