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import toDate from '../toDate/index.ts'import requiredArgs from '../_lib/requiredArgs/index.ts'
/** * @name areIntervalsOverlapping * @category Interval Helpers * @summary Is the given time interval overlapping with another time interval? * * @description * Is the given time interval overlapping with another time interval? Adjacent intervals do not count as overlapping. * * ### 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 `areRangesOverlapping` to `areIntervalsOverlapping`. *   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 * *   areRangesOverlapping( *     new Date(2014, 0, 10), new Date(2014, 0, 20), *     new Date(2014, 0, 17), new Date(2014, 0, 21) *   ) * *   // v2.0.0 onward * *   areIntervalsOverlapping( *     { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) }, *     { start: new Date(2014, 0, 17), end: new Date(2014, 0, 21) } *   ) *   ``` * * @param {Interval} intervalLeft - the first interval to compare. See [Interval]{@link https://date-fns.org/docs/Interval} * @param {Interval} intervalRight - the second interval to compare. See [Interval]{@link https://date-fns.org/docs/Interval} * @param {Object} [options] - the object with options * @param {Boolean} [options.inclusive=false] - whether the comparison is inclusive or not * @returns {Boolean} whether the time intervals are overlapping * @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 overlapping time intervals: * areIntervalsOverlapping( *   { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) }, *   { start: new Date(2014, 0, 17), end: new Date(2014, 0, 21) } * ) * //=> true * * @example * // For non-overlapping time intervals: * areIntervalsOverlapping( *   { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) }, *   { start: new Date(2014, 0, 21), end: new Date(2014, 0, 22) } * ) * //=> false * * @example * // For adjacent time intervals: * areIntervalsOverlapping( *   { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) }, *   { start: new Date(2014, 0, 20), end: new Date(2014, 0, 30) } * ) * //=> false * * @example * // Using the inclusive option: * areIntervalsOverlapping( *   { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) }, *   { start: new Date(2014, 0, 20), end: new Date(2014, 0, 24) } * ) * //=> false * areIntervalsOverlapping( *   { start: new Date(2014, 0, 10), end: new Date(2014, 0, 20) }, *   { start: new Date(2014, 0, 20), end: new Date(2014, 0, 24) }, *   { inclusive: true } * ) * //=> true */export default function areIntervalsOverlapping(  dirtyIntervalLeft: Interval,  dirtyIntervalRight: Interval,  options = { inclusive: false }): boolean {  requiredArgs(2, arguments)
  const intervalLeft = dirtyIntervalLeft || {}  const intervalRight = dirtyIntervalRight || {}  const leftStartTime = toDate(intervalLeft.start).getTime()  const leftEndTime = toDate(intervalLeft.end).getTime()  const rightStartTime = toDate(intervalRight.start).getTime()  const rightEndTime = toDate(intervalRight.end).getTime()
  // Throw an exception if start date is after end date or if any date is `Invalid Date`  if (!(leftStartTime <= leftEndTime && rightStartTime <= rightEndTime)) {    throw new RangeError('Invalid interval')  }
  if (options.inclusive) {    return leftStartTime <= rightEndTime && rightStartTime <= leftEndTime  }
  return leftStartTime < rightEndTime && rightStartTime < leftEndTime}