export default class DateTimeFormatter {
    readonly pattern: string;
    private constructor();
    /**
     * Creates a new DateTimeFormatter instance with the provided pattern.
     * @param {string} pattern - The pattern to use for formatting and parsing dates/times.
     * @returns {DateTimeFormatter} A new instance of DateTimeFormatter.
     * @throws {Error} Throws an error if the pattern is not a non-empty string.
     */
    static ofPattern: (pattern: string) => DateTimeFormatter;
    /**
     * Gets the pattern used by this formatter.
     * @returns {string} The pattern string.
     */
    getPattern: () => string;
    /**
     * Formats the date portion (YYYY, MM, DD) of a given Date object.
     * @param {Date} date - The date object to format.
     * @returns {string} The formatted date string.
     * @throws {Error} Throws an error if the provided date is invalid.
     */
    formatDate: (date: Date) => string;
    /**
     * Formats both the date and time based on the pattern.
     * @param {Date} date - The date object to format.
     * @returns {string} The formatted date-time string.
     * @throws {Error} Throws an error if the provided date is invalid.
     */
    formatDateTime: (date: Date) => string;
    /**
     * Parses a date string based on the formatter's pattern.
     * @param {string} dateString - The date string to parse.
     * @returns {Date} The parsed Date object.
     * @throws {Error} Throws an error if the string is invalid or the pattern is incorrect.
     */
    parseDate: (dateString: string) => Date;
    /**
     * Parses a time string based on the formatter's pattern.
     * @param {string} timeString - The time string to parse.
     * @returns {Object} An object containing hours, minutes, and seconds.
     * @throws {Error} Throws an error if the string is invalid or the pattern is incorrect.
     */
    parseTime: (timeString: string) => {
        hours: number;
        minutes: number;
        seconds: number;
    };
    /**
     * Parses a combined date-time string based on the formatter's pattern.
     * @param {string} dateTimeString - The date-time string to parse.
     * @returns {Date} The parsed Date object.
     * @throws {Error} Throws an error if the string is invalid or the pattern is incorrect.
     */
    parseDateTime: (dateTimeString: string) => Date;
    /**
     * Extracts a substring from the given dateTime string based on tokens.
     * @private
     * @param {string} dateTimeString - The full dateTime string.
     * @param {'YYYY' | 'HH' | 'hh'} startToken - The starting token for extraction.
     * @param {'DD' | 'ss'} endToken - The ending token for extraction.
     * @returns {string|null} The extracted substring, or null if tokens are not found.
     */
    private extractPart;
}