import type { TimeUnit } from "../types/time/timeUnit";
import type { TimeUnitShort } from "../types/time/timeUnitShort";
/**
 * Converts time between different units
 * @param value Value to convert (string or number)
 * @param fromUnit Source time unit
 * @param toUnit Target time unit
 * @returns Converted value (number)
 * @throws {Error} If the input value is invalid
 */
export declare const convertTime: (value: string | number, fromUnit: TimeUnit | TimeUnitShort, toUnit: TimeUnit | TimeUnitShort) => number;