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import requiredArgs from '../_lib/requiredArgs/index'
import { monthsInYear } from '../constants/index'
/**
* @name monthsToYears
* @category Conversion Helpers
* @summary Convert number of months to years.
*
* @description
* Convert a number of months to a full number of years.
*
* @param {number} months - number of months to be converted
*
* @returns {number} the number of months converted in years
* @throws {TypeError} 1 argument required
*
* @example
* // Convert 36 months to years:
* const result = monthsToYears(36)
* //=> 3
*
* // It uses floor rounding:
* const result = monthsToYears(40)
* //=> 3
*/
export default function monthsToYears(months: number): number {
requiredArgs(1, arguments)
const years = months / monthsInYear
return Math.floor(years)
}
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