/**
 * A data structure that represents the time between two dates.
 *
 * @public
 */
export default class Timespan {
    /**
     * Creates a new {@link Timespan} instance from dates.
     *
     * @public
     * @static
     * @param {Date} start
     * @param {Date} end
     * @returns {Timespan}
     */
    public static fromDates(start: Date, end: Date): Timespan;
    /**
     * @param {number} start
     * @param {number} end
     */
    constructor(start: number, end: number);
    /**
     * The start time (as milliseconds since epoch).
     *
     * @public
     * @returns {number}
     */
    public get start(): number;
    /**
     * The start time (as milliseconds since epoch).
     *
     * @public
     * @returns {number}
     */
    public get end(): number;
    /**
     * The total number of days between the start and end times (rounded down to the nearest integer).
     *
     * @public
     * @returns {number}
     */
    public get days(): number;
    /**
     * The total number of hours between the start and end times (rounded down to the nearest integer).
     *
     * @public
     * @returns {number}
     */
    public get hours(): number;
    /**
     * The total number of minutes between the start and end times (rounded down to the nearest integer).
     *
     * @public
     * @returns {number}
     */
    public get minutes(): number;
    /**
     * The total number of seconds between the start and end times (rounded down to the nearest integer).
     *
     * @public
     * @returns {number}
     */
    public get seconds(): number;
    /**
     * The total number of milliseconds between the start and end times.
     *
     * @public
     * @returns {number}
     */
    public get milliseconds(): number;
    /**
     * Returns the duration between the start and end times as days, hours, minutes, seconds, and
     * milliseconds.
     *
     * @public
     * @param {boolean} days
     * @param {boolean} hours
     * @param {boolean} minutes
     * @param {boolean} seconds
     * @returns {{days: number, hours: number, minutes: *, seconds: number, milliseconds: number}}
     */
    public getDuration(days: boolean, hours: boolean, minutes: boolean, seconds: boolean): {
        days: number;
        hours: number;
        minutes: any;
        seconds: number;
        milliseconds: number;
    };
    /**
     * Returns the JSON representation.
     *
     * @public
     * @returns {object}
     */
    public toJSON(): object;
    /**
     * Returns a string representation.
     *
     * @public
     * @returns {string}
     */
    public toString(): string;
    #private;
}