import type { ContextOptions, DateArg, RoundingOptions } from '../types.ts';
/**
 * The {@link differenceInHours} function options.
 */
export interface DifferenceInHoursOptions extends RoundingOptions, ContextOptions<Date> {
}
/**
 * @name differenceInHours
 * @category Hour Helpers
 * @summary Get the number of hours between the given dates.
 *
 * @description
 * Get the number of hours between the given dates.
 *
 * @param laterDate - The later date
 * @param earlierDate - The earlier date
 * @param options - An object with options.
 *
 * @returns The number of hours
 *
 * @example
 * // How many hours are between 2 July 2014 06:50:00 and 2 July 2014 19:00:00?
 * const result = differenceInHours(
 *   new Date(2014, 6, 2, 19, 0),
 *   new Date(2014, 6, 2, 6, 50)
 * )
 * //=> 12
 */
export declare function differenceInHours(laterDate: DateArg<Date> & {}, earlierDate: DateArg<Date> & {}, options?: DifferenceInHoursOptions): number;