declare const _default: {
    /**
     * Put a character in a string using position.
     * @param {number} position
     * @param {*} char
     * @param {string} str
     */
    spliceIntoPosition(position: number, char: string, str?: string | undefined): string;
    /**
     * Get cron minute string.
     */
    minute(): string;
    /**
     * Get cron hour String.
     */
    hour(): string;
    /**
     * Get Cron day string, with an option of setting: `hourOfTheDay and minuteOfTheHour`
     * @param hourOfTheDay
     * @param minuteOfTheHour
     */
    day(hourOfTheDay?: number, minuteOfTheHour?: number): string;
    /**
     * Get the integer representation of day string.
     * @param {string|number} day
     * @return {number}
     * @example
     *  Helpers.dayToInt('sunday') // 0
     *  Helpers.dayToInt('monday') // 1
     */
    dayToInt(day: number | string): number;
    /**
     * Get the integer representation of multiple day strings.
     * @param days
     */
    daysToIntegers(days: (string | number)[]): number[];
    /**
     * Checks if startDay and endDay follows a calendar sequence.
     * else throws error.
     * @param startDay
     * @param endDay
     */
    validateStartToEndDay(startDay: number, endDay: number): void;
};
export default _default;