var addMonths = require('../add_months/index.js')
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/**
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* @category Month Helpers
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* @summary Subtract the specified number of months from the given date.
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*
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* @description
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* Subtract the specified number of months from 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 months to be subtracted
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* @returns {Date} the new date with the months subtracted
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*
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* @example
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* // Subtract 5 months from 1 February 2015:
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* var result = subMonths(new Date(2015, 1, 1), 5)
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* //=> Mon Sep 01 2014 00:00:00
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*/
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function subMonths (dirtyDate, dirtyAmount) {
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var amount = Number(dirtyAmount)
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return addMonths(dirtyDate, -amount)
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}
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module.exports = subMonths
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