index.js
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import toDate from '../toDate/index.js';
import requiredArgs from '../_lib/requiredArgs/index.js';
/**
* @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
*/
export default function isWithinInterval(dirtyDate, dirtyInterval) {
requiredArgs(2, arguments);
var interval = dirtyInterval || {};
var time = toDate(dirtyDate).getTime();
var startTime = toDate(interval.start).getTime();
var endTime = toDate(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;
}