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- import { startOfQuarter } from "./startOfQuarter.mjs";
- /**
- * @name isSameQuarter
- * @category Quarter Helpers
- * @summary Are the given dates in the same quarter (and year)?
- *
- * @description
- * Are the given dates in the same quarter (and year)?
- *
- * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
- *
- * @param dateLeft - The first date to check
- * @param dateRight - The second date to check
- * @returns The dates are in the same quarter (and year)
- *
- * @example
- * // Are 1 January 2014 and 8 March 2014 in the same quarter?
- * const result = isSameQuarter(new Date(2014, 0, 1), new Date(2014, 2, 8))
- * //=> true
- *
- * @example
- * // Are 1 January 2014 and 1 January 2015 in the same quarter?
- * const result = isSameQuarter(new Date(2014, 0, 1), new Date(2015, 0, 1))
- * //=> false
- */
- export function isSameQuarter(dateLeft, dateRight) {
- const dateLeftStartOfQuarter = startOfQuarter(dateLeft);
- const dateRightStartOfQuarter = startOfQuarter(dateRight);
- return +dateLeftStartOfQuarter === +dateRightStartOfQuarter;
- }
- // Fallback for modularized imports:
- export default isSameQuarter;
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