/**
 * Pad a number with 0
 * @param number Number to pad
 * @param size Size of end string
 * @returns padded string
 */
declare const padNumber: (number: number, size: number) => string;
/**
 * Throw invalid format error
 * @param format Invalid format
 * @returns {void}
 */
declare const throwInvalidFormat: (format: string) => void;
/**
 * Throw invalid value error
 * @param value Invalid value
 * @returns {void}
 */
declare const throwInvalidValue: (value: string) => void;
/**
 * Throw invalid unit error
 * @param unit Invalid unit
 * @returns {void}
 */
declare const throwInvalidUnit: (unit: string) => void;
export { padNumber, throwInvalidFormat, throwInvalidValue, throwInvalidUnit };