diff options
Diffstat (limited to 'node_modules/date-fns/esm/differenceInYears/index.js')
| -rw-r--r-- | node_modules/date-fns/esm/differenceInYears/index.js | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/node_modules/date-fns/esm/differenceInYears/index.js b/node_modules/date-fns/esm/differenceInYears/index.js deleted file mode 100644 index 0b33b06..0000000 --- a/node_modules/date-fns/esm/differenceInYears/index.js +++ /dev/null @@ -1,41 +0,0 @@ -import toDate from "../toDate/index.js"; -import differenceInCalendarYears from "../differenceInCalendarYears/index.js"; -import compareAsc from "../compareAsc/index.js"; -import requiredArgs from "../_lib/requiredArgs/index.js"; -/** - * @name differenceInYears - * @category Year Helpers - * @summary Get the number of full years between the given dates. - * - * @description - * Get the number of full years between the given dates. - * - * @param {Date|Number} dateLeft - the later date - * @param {Date|Number} dateRight - the earlier date - * @returns {Number} the number of full years - * @throws {TypeError} 2 arguments required - * - * @example - * // How many full years are between 31 December 2013 and 11 February 2015? - * const result = differenceInYears(new Date(2015, 1, 11), new Date(2013, 11, 31)) - * //=> 1 - */ -export default function differenceInYears(dirtyDateLeft, dirtyDateRight) { - requiredArgs(2, arguments); - var dateLeft = toDate(dirtyDateLeft); - var dateRight = toDate(dirtyDateRight); - var sign = compareAsc(dateLeft, dateRight); - var difference = Math.abs(differenceInCalendarYears(dateLeft, dateRight)); - - // Set both dates to a valid leap year for accurate comparison when dealing - // with leap days - dateLeft.setFullYear(1584); - dateRight.setFullYear(1584); - - // Math.abs(diff in full years - diff in calendar years) === 1 if last calendar year is not full - // If so, result must be decreased by 1 in absolute value - var isLastYearNotFull = compareAsc(dateLeft, dateRight) === -sign; - var result = sign * (difference - Number(isLastYearNotFull)); - // Prevent negative zero - return result === 0 ? 0 : result; -}
\ No newline at end of file |
