index.js 3.05 KB
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = isWithinInterval;

var _index = _interopRequireDefault(require("../toDate/index.js"));

var _index2 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * @name isWithinInterval
 * @category Interval Helpers
 * @summary Is the given date within the interval?
 *
 * @description
 * Is the given date within the interval? (Including start and end.)
 *
 * ### v2.0.0 breaking changes:
 *
 * - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes).
 *
 * - The function was renamed from `isWithinRange` to `isWithinInterval`.
 *   This change was made to mirror the use of the word "interval" in standard ISO 8601:2004 terminology:
 *
 *   ```
 *   2.1.3
 *   time interval
 *   part of the time axis limited by two instants
 *   ```
 *
 *   Also, this function now accepts an object with `start` and `end` properties
 *   instead of two arguments as an interval.
 *   This function now throws `RangeError` if the start of the interval is after its end
 *   or if any date in the interval is `Invalid Date`.
 *
 *   ```javascript
 *   // Before v2.0.0
 *
 *   isWithinRange(
 *     new Date(2014, 0, 3),
 *     new Date(2014, 0, 1), new Date(2014, 0, 7)
 *   )
 *
 *   // v2.0.0 onward
 *
 *   isWithinInterval(
 *     new Date(2014, 0, 3),
 *     { start: new Date(2014, 0, 1), end: new Date(2014, 0, 7) }
 *   )
 *   ```
 *
 * @param {Date|Number} date - the date to check
 * @param {Interval} interval - the interval to check
 * @returns {Boolean} the date is within the interval
 * @throws {TypeError} 2 arguments required
 * @throws {RangeError} The start of an interval cannot be after its end
 * @throws {RangeError} Date in interval cannot be `Invalid Date`
 *
 * @example
 * // For the date within the interval:
 * isWithinInterval(new Date(2014, 0, 3), {
 *   start: new Date(2014, 0, 1),
 *   end: new Date(2014, 0, 7)
 * })
 * //=> true
 *
 * @example
 * // For the date outside of the interval:
 * isWithinInterval(new Date(2014, 0, 10), {
 *   start: new Date(2014, 0, 1),
 *   end: new Date(2014, 0, 7)
 * })
 * //=> false
 *
 * @example
 * // For date equal to interval start:
 * isWithinInterval(date, { start, end: date }) // => true
 *
 * @example
 * // For date equal to interval end:
 * isWithinInterval(date, { start: date, end }) // => true
 */
function isWithinInterval(dirtyDate, dirtyInterval) {
  (0, _index2.default)(2, arguments);
  var interval = dirtyInterval || {};
  var time = (0, _index.default)(dirtyDate).getTime();
  var startTime = (0, _index.default)(interval.start).getTime();
  var endTime = (0, _index.default)(interval.end).getTime(); // Throw an exception if start date is after end date or if any date is `Invalid Date`

  if (!(startTime <= endTime)) {
    throw new RangeError('Invalid interval');
  }

  return time >= startTime && time <= endTime;
}

module.exports = exports.default;