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import { millisecondsInHour } from "../constants/index.js";
import differenceInMilliseconds from "../differenceInMilliseconds/index.js";
import requiredArgs from "../_lib/requiredArgs/index.js";
import { getRoundingMethod } from "../_lib/roundingMethods/index.js";
/**
* @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
* @param {Object} [options] - an object with options.
* @param {String} [options.roundingMethod='trunc'] - a rounding method (`ceil`, `floor`, `round` or `trunc`)
* @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?
* const result = differenceInHours(
* new Date(2014, 6, 2, 19, 0),
* new Date(2014, 6, 2, 6, 50)
* )
* //=> 12
*/
export default function differenceInHours(dateLeft, dateRight, options) {
requiredArgs(2, arguments);
var diff = differenceInMilliseconds(dateLeft, dateRight) / millisecondsInHour;
return getRoundingMethod(options === null || options === void 0 ? void 0 : options.roundingMethod)(diff);
}
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