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import differenceInMilliseconds from '../differenceInMilliseconds/index.ts'import requiredArgs from '../_lib/requiredArgs/index.ts'
const MILLISECONDS_IN_HOUR = 3600000
/** * @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. * * ### v2.0.0 breaking changes: * * - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes). * * @param {Date|Number} dateLeft - the later date * @param {Date|Number} dateRight - the earlier date * @returns {Number} the number of hours * @throws {TypeError} 2 arguments required * * @example * // How many hours are between 2 July 2014 06:50:00 and 2 July 2014 19:00:00? * var result = differenceInHours( *   new Date(2014, 6, 2, 19, 0), *   new Date(2014, 6, 2, 6, 50) * ) * //=> 12 */export default function differenceInHours(dirtyDateLeft: Date | number, dirtyDateRight: Date | number): number {  requiredArgs(2, arguments)
  const diff =    differenceInMilliseconds(dirtyDateLeft, dirtyDateRight) /    MILLISECONDS_IN_HOUR  return diff > 0 ? Math.floor(diff) : Math.ceil(diff)}