/**
 * Custom error class for handling errors specific to the Zone class.
 */
export declare class ZoneError extends Error {
}
/**
 * Type definition for a formatter function used to format date and time components.
 *
 * @param year The year component (e.g., 2024).
 * @param month The month component (1-12).
 * @param day The day of the month (1-31).
 * @param hour The hour component in 24-hour format (0-23).
 * @param minute The minute component (0-59).
 * @param second The second component (0-59).
 * @returns A formatted string representation of the date and time.
 */
type Formatter = (year: number, month: number, day: number, hour: number, minute: number, second: number) => string;
/**
 * Represents a date and time in a specific timezone, providing utilities
 * for formatting and calculating time differences.
 */
export declare class Zone {
    /**
     * The original date in the local timezone.
     */
    date: Date;
    /**
     * The formatted datetime string in the specified timezone.
     */
    datetime: string;
    /**
     * The timezone identifier (e.g., `America/New_York`)..
     */
    timezone: string;
    /**
     * The year in the specified timezone.
     */
    year: number;
    /**
     * The month (1-12) in the specified timezone.
     */
    month: number;
    /**
     * The day of the month (1-31) in the specified timezone.
     */
    day: number;
    /**
     * The hour (0-23) in the specified timezone.
     */
    hour: number;
    /**
     * The minute (0-59) in the specified timezone.
     */
    minute: number;
    /**
     * The second (0-59) in the specified timezone.
     */
    second: number;
    /**
     * Creates a new Zone instance based on a datetime and timezone.
     *
     * @param datetime The datetime string in `YYYY-MM-DD hh:mm:ss` fromat.
     * @param timezone The timezone identifier (e.g., `America/New_York`).
     * @throws `ZoneError` if the datetime or timezone is invalid.
     */
    constructor(datetime: string, timezone: string);
    /**
     * Formats the datetime using a custom formatter function.
     *
     * @param formatter A function that formats datetime components into a string.
     * @returns The formatted date-time string or the default datetime string.
     */
    format(formatter: Formatter): string;
    /**
     * Returns the date as a `YYYY-MM-DD` formatted string.
     *
     * @returns The date string.
     */
    toDateString(): string;
    /**
     * Returns the time as a `hh:mm:ss` formatted string.
     *
     * @returns The time string.
     */
    toTimestring(): string;
    /**
     * Returns the time in 12-hour AM/PM format.
     *
     * @returns The formatted time (e.g., `1:30 PM`).
     */
    ampm(): string;
    /**
     * Calculates the time difference between now and the Zone's date.
     *
     * @returns A human-readable description of the time difference (e.g., `5 minutes ago`).
     */
    diff(): string;
}
export {};