var addMilliseconds = require('../add_milliseconds/index.js')
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var MILLISECONDS_IN_HOUR = 3600000
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/**
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* @category Hour Helpers
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* @summary Add the specified number of hours to the given date.
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*
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* @description
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* Add the specified number of hours to the given date.
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*
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* @param {Date|String|Number} date - the date to be changed
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* @param {Number} amount - the amount of hours to be added
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* @returns {Date} the new date with the hours added
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*
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* @example
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* // Add 2 hours to 10 July 2014 23:00:00:
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* var result = addHours(new Date(2014, 6, 10, 23, 0), 2)
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* //=> Fri Jul 11 2014 01:00:00
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*/
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function addHours (dirtyDate, dirtyAmount) {
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var amount = Number(dirtyAmount)
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return addMilliseconds(dirtyDate, amount * MILLISECONDS_IN_HOUR)
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}
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module.exports = addHours
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